@dealviinde The belt is like this :A core of steel rings (Like metal strip) and over the rings are elements/Links which are fitted onto the steel rings.So there must be around 400 elements around the entire core of form a hard belt which can withstand high tensile stresses.
My first car was a DAF - loved it! Current car is a Prius which uses two electric motors and a variable electric current rather then two pullies and a variable belt, feels a bit the same to drive tho its much more refined. My brother's current car is a CVT Maxima and it goes like a rocket.
nomad1545 in real life for cars the cvt is a bit more complex than this the video is just showing the basics how it works, a nissan versa cvt for example has little ridges like teeth that grab on the gear as it spins so no it doesnt slip, CVT is a brilliant idea not like hybrid cars
@nomad1545 maybe on high power engines. the torque of the motor may overcome the grip coefficient of the "chain" and make it slip. nevertheless it wouldn't have that big an effect, and mainly, cvt gearboxes are mounted on low power vehicles normally
@serginietor The Nissan Murano,Maxima,and Altima currently have CVT's...i wouldn't call them low powered though with the Murano's,Altima's 3.5 Putting out 265 Horsepower,and the Maxima's 3.5 Putting out 290 HP.
@form109 really? well, i didn't know that somewhat powerful cars had CVTs
anyway, the maxima is available with a paddle automatic gearbox, which is probably faster around a track than the CVT, which is designed to have a confortable ride, without having to worry about much, not real sporty driving
@serginietor me personally if it had to be an Automatic Transmission i'd prefer a Standard Auto (with a Torque Convertor) 6 or even the 7 speeds currently used in Nissan's own Infiniti Division....or the Dual Clutch Auto's such as the one found in the Current GTR.
It's NOT a DAF CVT at all or remotely similar, here's why 1 - this is a metal pushing V-belt CVT (MPVB) CVT - look it up
2 - DAF used a rubber belt PULLING CVT
3 - DAF relied on the vacuum from the engine and belt friction
4 - these use hydraulics and have oil slung all around - significantly higher compressive forces
The Audi Multitronic would be closer to the DAF than these. These are used in many cars and force metal segments into a solid bar to transfer power through pushing
@Tinxurcrazy Hey, you know your stuff. Daf came up with his transmission after touring American car factories, being impressed with the American automatic, which was an entirely different animal. It's interesting seeing the CVT evolve in the 21st century, with many new innovative deviations from the original.
@andrewmylyf CVT belts rarely snap. after a while they do wear out, like any other mechanical thing. but these belts are typically made out of kevlar and/or carbon making them incredibly strong.....and yes, you can do a burnout, snowmobiles are CVT as well as some motorcycles and those have absolutely no problem doing a burnout.
@andrewmylyf Trust me, you can do a burnout. If it is tuned and balanced properly, the belt will not snap. We run snowmobiles with garret turbochargers on them, and have little to no problems with the belt.
Awesome in concept but unless they make it extremely easy to replace the belt then it will be hated by everyone. Also people expect to be able to go 200,000 miles before any transmission issues..... I doubt that belt will make it 100,000
@fivedragon53 in the same way that a circle only has one side... there's an input shaft and an output shaft, the cone's slope represents different sized gears or belt pulleys. the computer is able to adjust the position of the cones on either side to a fine enough degree where the gear ratios effectively become infinite (within a certain spectrum)
Better hope you dont break the belt! it would be a pain in the ass to change it. This is a great idea for snowmobiles and other recreational vehicles because it maximizes engine torque but its not ideal for cars.
@TheArcticcatrider well i dont know because they have it as an option on the Aston Martin Cygnet and toyota put it on the 2012 prius V and i think that you would only put this kind of transmission in little cars with little motors because i dont think they you handle the kind of torque that lets say a Ford Super Duty is puting out
@TheArcticcatrider well i dont know because they have it as an option on the Aston Martin Cygnet and toyota put it on the 2012 prius V and i think that you would only put this kind of transmission in little cars with little motors because i dont think they can handle the kind of torque that lets say a Ford Super Duty is puting out
This design is already obsolete as far as I'm concerned. DCT is super smooth and way more reliable than this crap. I might be okay with VCT in a washing machine.
@kladivous just because something has been around for a while doesn't make the next thing better, anything that breaks on a DCT will cost you, and further a CVT is truly the only seamless transmission type as even in a DCT there is rev drop and rise which you don't have in a CVT, the engine revs to a point and stays there while the CVT adjust itself to gain speed. Also with less moving parts to generate heat, etc. the fluid lasts longer which also takes another cost away.
@joanen1000 Umm, wtf? The purpose of a automatic trans is to be easy and smooth, not jumpy and choppy. If you want to feel the "jumps" then why dont you get urself a manual trans car like a proper driver.
CVTs suck. they sound like they strangle the engine and also there's delay in power output if you decide to accelerate quickly because the computer has to decide where to spin the belt. And it really doesn't matter how powerful the engine is, you still get the grinding sound form the belt and delay in power. if you want a smooth and responsive engine go for a conventional automatic.
wow, this is pretty much the the same as the torque converter i have on my go kart. would of thought for a car it would be more complex. live and learn
@jb40021 Depends on who makes it, but the one in my 2010 Lancer GTS is warrantied to 100,000 miles. They last just as long as a regular automatic transmission. I also get "virtual gears" and paddle shifters, all warrantied. It's not a bad deal.
@Motorfordtoyota Hence, most of them have D for normal driving, S for sport, and L for high load slow speed. So if you put it in normal then it will calculate the load through throttle position sensor, MAP or MAF sensor then tranny fluid pressure then it will know what ratio to put out. It'll only hit 5000 rpm or more because u floored it and it will give u the maximum power.
@Motorfordtoyota Lol where did you hear that? My 2010 Lancer GTS with a CVT tranny does 3000 rpm at 90 miles an hour, and 900 RPM at 30 mph, and about 2000 rpm at 55 mph. Not bad at all. In manual mode, it has six "virtual gears" that I can shift up or down via paddle shifters.
how does it know to down shift? Like fo rpassing. Is seems that it reacts with speed only. What about load or the throttle position like and automatic with gears?
Does this mean the car has no gears? And will the rpms be high at low speeds since the "pinion" will have to spin faster to keep the "idler" moving at a certain speed?
as long as it's servicable and easily fixable (politics might prevent that). i can't imagine anyone who'd rather convert their snowmobiles to standard and shift gears thru the snow.
wouldn"t wanna change the belt. Same design as ski-doos and automatic quads and the belt should be changed once a year. but if its easy to cange id like to have one cause you can clutch it to stay at what ever rpm you want.you can also replace springs to change the engagement of the clutch. stronger spring higher the engagement.
It,s all good for the builder, fast cheap ,but those thing,s have always,s been plagued with lose of power transfer and heat problem,s, the top part of the belt turn,s at different speed than the bottom so unnoticeable slippage result,s from it.
@LOLDISNEYLAND that's why i say for the trucks.. Nissan had use it for many years before. i dont see any problem to embed the system into light vehicle
Is there any advantage to automatic over CVT? It seems automatic is much more complicated, and the engine power is usually transmitted through a lossy fluid coupled torque converter, and this is just a belt going round two diameter changing wheels.
@TimpBizkit The advantage is almost perfect power transmission. Since you have no shifting of gears, there is no delay between gear shifts and the power is kept at peak throughout acceleration. You can electronically control the gear ratio if you need a particular amount of torque whether accelerating or decelerating. Since CVT is a simple transmission, there are less parts, less frictional losses and hence longer life of the transmission components.
@TimpBizkit Sorry I didn't read your initial sentence right. Duh! A Planetary system has the advantage of being able to be melted down to create CV transmissions. :D
I really can't think of any advantages apart from having cheap parts due to there being lots of stock available. Once CVT catches on, it will also be cheaper in parts.
To the best of my knowledge, this technology is pretty old. You can find this even in the old pre WW 2 platten paper printing machine. Its just an improvement on it. Just like internal combustion engine. More than 150 years old technology re invented. Please feel free to reply. TQ
Ineresting design, but these transmissions have a poor track record of self-distructing with very low miles. I've seen pages of blogs, and know someone who owns one. If you are thinking of buying a Caliber..a word to the wise..don't.
i work at a Honda dealer and i had to drive the new Insight hybrid and it felt soo wierd. i like the normal automatic transmission gear shift feel when im driving. i have a 94 lincoln and i like the feel of the shift's they are smooth transistions. but the CVT makes everything feel too smooth and wierd. so yeah CVT's are dumb. do you know how often they wear out and start to slip or whatever?
@chevyblows2001 lol no, but i'd like to because i bought an altima a couple of months ago. i hate the car, so as far as i'm concerned, slippage can't come fast enough ;).
seriously though, i hate driving it. if i want to accelerate, i have to floor it, then i have to listen to brutal cvt acceleration for about 10-15 seconds as it slowly creeps up from 0-70. being a car enthusiast, i never would have thought i'd say this, but i dread hearing that car's engine.
@chevyblows2001 yes. my dad likes it because he has an extremely... uh... how can i put this nicely... relaxed driving style. he can drive it in a way that he never needs to go over 2,000 rpm because he never drives it quicker than 60 anyway. but for the rest of us, automatics are better.
automatic is EXTREMELY ADVANCED engine. this cvt has much better fuel economi and you just need to change the belt sometimes. cvost nothing, while you must changes the differentials on the gear box after some years, and its bery big work and cost alot, ,even need specieal tools to split the gearbox. this CVT is the future,
´bullshit? the cvt is extremely mucj economic oand simplier than gearbox and especielly the automatic:S i love to drive scooter (CVT) and the most like it. so why chould the most hate cvt in carrs?
well i hate it because compared to the conventional automatic i used to own, it gets worse fuel economy and feels slower. i averaged 23 mpg on my old altima, and i average 22.4 on the cvt altima, despite being more "efficient" and despite having higher epa numbers. its noise is terrible, and driving it gives the feeling of a slipping clutch. don't get me wrong, i think the cvt is better than a jerky 4 speed automatic, but not better than a 5 or 6 speed.
@bmfoshizzle . My Mitzy CVT has a separate clutch and a planetary gearset to give a reverse. Had to comment ont a post here (JcmMagNoo) that said changing a belt is easy (and therefore cheap?). When the belt breaks, hundreds of broken links and flat wire strands go right thru the box. Plus a belt is about $1000 trade. I've just done mine. And selling it pronto.
@moyadapne ?? Your belt broke? What were you doing? Usually CVT lasts a long time. You should check your components i.e. service the vehicle regularily. My planetary system in my car simply lost a few clutch plates due to wear, and I was quoted $2000 to have it repaired. I did the job myself and went to get it tested and I only paid $200 for parts. I found a CVT chain and a belt equivalent for $400 once. Changing a belt or chain is easy so labour cost is low.
@LOLDISNEYLAND . I bought the car with a broken belt, but I knew the last owner/driver, and he drove quietly. 140,000km. The bad thing about belt breakage is the long walk home, whereas a cooked auto trans may still stagger home. I've rebuilt autos for 35 years, and done a couple of cvt's. A cvt belt is $1400 retail in hicksville New Zealand. I realize they're the way the world is moving, but I don't like them, because keeping with traffic from a standstill sounds like you're racing someone.
@moyadapne Because gas is so expensive in New Zealand ($18.9/litre), a CVT car that goes straight to 4000rpm to keep up with traffic, feels wasteful. That Dodge CVT looks exactly like my Mitsubishi one. The only way I can justify a CVT in normal conditions is to move off very quietly so the thing stays around 1500rpm. I hate having to compromise, as a normal auto doesn't suffer from this. Call me old-fashioned. But my '03 Mitzy 1.8 CVT does drink gas. And yes, it's tuned and serviced...now.
@MrTrueRedneck yup , i have one on my mini bike made by comet industries but the call it a torque converter for some reason , basically the same thing
It's like a snowmobile. The only reason that it didn't replace the normal automatique transmission is that you can't haul a big load with that type of tranmission without the belt slipping in the pulley. It's only good for small cars not trucks.
Well, they also get better mileage on the highway because the gear ratio's are close together, which means that 2000 or 3000 RPM power is going directly into moving the vehicle or at least maintaining the current velocity.
Some of them have an electromechanical clutch. Nothing wrong with torque converters really though, recent ones are pretty efficient with the lockup clutch - should be much more efficient again a CVT since it can quickly find the best gear ratio, whatever the vehicle speed, load or engine RPM.
Conventional automatics will almost always be a little off the most appropriate ratio, and will often hunt between two imperfect ratios.
Not sure why CVTs haven't completely replaced them by now.
americans are not patient with the transmissions. for example in a standard auto push the throttle and it goes down a gear and i have instant acceleration and i pass the car. takes 7-14 seconds max!
in a CVT however, you push the throttle and you have to wait for the engine to pick up the revs, wait again for the speed to pick up and wait again for the car to pass the car thats ahead of you.
Hmm, I guess that's more of a software problem than a hardware one, though? Would love to drive a couple of CVTs and see how they compare. Actually I've only driven a conventional automatic a few times for short runs - mine is a manual as are most in Ireland.
Not sure why almost everyone drives manual transmissions here - another mystery :D First time I drove an automatic was such a pleasure in comparison to my rustbucket.
No, I think it's just a cultural thing. Most people here consider driving automatics to be lazy or boring or "not being in full control" (i.e. switching gears at weird moments during a turn or overtake), which doesn't make much sense to me, but anyway.
Like I said, personally I prefer the smooth easy feeling of an automatic (e.g. not messing about with the clutch constantly in slow start-stop traffic - just take your foot off the brake to creep forward).
I think this could be solved using a automatic/manual hybrid cvt; In the automatic setting, a computer would operate it, but if you want control, you would flick a switch and use a boat throttle-like lever to control the gear ratios yourself.
@JcmMagNoo What are you talking about? Hating on Americans? Constant velocity transmissions have been used by many manufacturers and if you want to blame the design on anyone then blame it on Leonardo you retard. In fact very few American auto manufacturers use CVTs.
You are an idiot. They are also known as continuous velocity transmissions, due to the fact that they allow an adjustable torque at a constant velocity.
infinant ratios = Variable. either way its a new generation of automatic transmission. at least fixing one of these is easy as replacing a belt, lubing, and adjusting the software and hardware.
CVT is different than an automatic gearbox (witch does, of course, shift more efficiently than any human ever could). CVT doesn't have 'levels' because the different ratios are endless and seamless. furthermore, the original CVT's (also known as Variomatic, invented by the dutch company DAF) did not use a computer, but centrifugal force to increase/reduce radius, quite a brilliant system
auto shift is always at the right rev count and is always quicker than manual shift, witch means less rev loss (thus less torque loss and more fuel efficiency)
They are IMHO the way to go for effiency for IC engines. They are simple, in theory longer lasting than autos/manuals, lighter. and my 185+ho Caliber gets 40+MPG and I don't have to drive like an old lady to get it either as the engine is always running at maximum efficency as the CVT keeps the 'ratios' for maximum engine effiency
So cvt changes power ration based only on rotation speed? Wouldn't it be more useful to change power ratio based on resistance? For example make gear expand if chain pulls it harder..., like when drive train resists engine power(hill, sudden acceleration, flat tire)
not rlly a huge fan of this new cvt technology. i think alot of car enthusiast including myself would prefer to feel the shifting between gears. it gives that sense of speed... u kno wat i mean?? but i think grandmas would enjoy the cvt technology.
What is best vs. What sells will always be a conflict. (Auto industry I am speaking of).
I love shifting, I dont care about gas milage, I dont care about safety, and I really dont care about speed limits. I love the thrill of driving, and its not efficient.
CVT probably could be better in every category with a wee bit of developing. It would fit those who like getting from point A to point B with no excitement.
I'll tell you something fun, with CVT's you don't change gears, because it (normally) doesn't have any. and also a computer is not necessary for this system to function
Computer switches "levels" and I guess interacts with the engine more because it holds it at optimum rpms. It just seems like the CVT helps compliment the software/engine output with the constant transfer of power??
@dealviinde The belt is like this :A core of steel rings (Like metal strip) and over the rings are elements/Links which are fitted onto the steel rings.So there must be around 400 elements around the entire core of form a hard belt which can withstand high tensile stresses.
gladragsakshay 1 week ago
how can the belt grab those smooth pulleys?
donkeizluv 1 month ago
@donkeizluv i think the black part(sides of belt) is where the grip is
T64181700 3 weeks ago
Thee inevitable downside, not for towing.
mythril4 1 month ago
snowmobile clutch
427ImportEater 1 month ago
My first car was a DAF - loved it! Current car is a Prius which uses two electric motors and a variable electric current rather then two pullies and a variable belt, feels a bit the same to drive tho its much more refined. My brother's current car is a CVT Maxima and it goes like a rocket.
ChuffChuffWoo 2 months ago
Wow, Thats a Gleaner combine drive from back in the '50s!
buyafarmtv 3 months ago
nomad1545 in real life for cars the cvt is a bit more complex than this the video is just showing the basics how it works, a nissan versa cvt for example has little ridges like teeth that grab on the gear as it spins so no it doesnt slip, CVT is a brilliant idea not like hybrid cars
Brendon00000 4 months ago
this is the most ridiculous peice of shit that has made its way on to a car.
Manny32V 4 months ago
Does this type of transmition have any problems with the chain slipping on the pulleys?
nomad1545 4 months ago
@nomad1545 maybe on high power engines. the torque of the motor may overcome the grip coefficient of the "chain" and make it slip. nevertheless it wouldn't have that big an effect, and mainly, cvt gearboxes are mounted on low power vehicles normally
serginietor 4 months ago
@serginietor The Nissan Murano,Maxima,and Altima currently have CVT's...i wouldn't call them low powered though with the Murano's,Altima's 3.5 Putting out 265 Horsepower,and the Maxima's 3.5 Putting out 290 HP.
form109 4 months ago
@form109 really? well, i didn't know that somewhat powerful cars had CVTs
anyway, the maxima is available with a paddle automatic gearbox, which is probably faster around a track than the CVT, which is designed to have a confortable ride, without having to worry about much, not real sporty driving
serginietor 4 months ago
@serginietor the manual mode on the Maxima's CVT only simulates gear changes by dropping RPM Slightly....it's realistic though.
the current Maxima is avalible with a 6 Speed Manual so im sure people will love that.
form109 4 months ago
@form109 wow, although realistic (and really cool) I think it is a bit absurd, if I were to get a maxima I'd get it with the manual hands down.
serginietor 4 months ago
@serginietor me personally if it had to be an Automatic Transmission i'd prefer a Standard Auto (with a Torque Convertor) 6 or even the 7 speeds currently used in Nissan's own Infiniti Division....or the Dual Clutch Auto's such as the one found in the Current GTR.
form109 4 months ago
@form109 agreed, those are great gearboxes, specially the GTR one, but that is only fun when mounted on a GTR ;)
serginietor 4 months ago
@serginietor the Ford Fiesta has an optional powershift tranny....which is a 6 Speed Dual Clutch Auto lol
form109 4 months ago
@form109 really? they are making it all wrong... lol
serginietor 4 months ago
@serginietor i think the powershift tranny is a good match for the small power of the fiesta's engine....gives it abit of pep.
form109 4 months ago
It wasnt that durable as the ordinary one cause it uses pulleys but than one runs smoother than the ordinary one.
96canon 5 months ago
best
srkkroh791 5 months ago
CVT was used on "Scirocco" tea driers on Tea Estates around the world long before DAF or any one else.
Squarerig 5 months ago
What is the belt made out of? Must be extremely durable
dealviinde 6 months ago 6
that is freaking sweet
kyle88l 6 months ago
cvt sucks. the end.
immortal4942 6 months ago
Patent # 6869376
robber576 7 months ago
Its funny to see the Americans thinking that this is a American invention or even a Dodge invention.
The metal push belt is an invention by Van Doorne's transmission-Holland, locally still referred to as DAF (Doorne's Auto Factory): Read the Patent.
robber576 7 months ago
icamd PnS door (automatic door )
jeongkilsong 7 months ago
It's NOT a DAF CVT at all or remotely similar, here's why 1 - this is a metal pushing V-belt CVT (MPVB) CVT - look it up
2 - DAF used a rubber belt PULLING CVT
3 - DAF relied on the vacuum from the engine and belt friction
4 - these use hydraulics and have oil slung all around - significantly higher compressive forces
The Audi Multitronic would be closer to the DAF than these. These are used in many cars and force metal segments into a solid bar to transfer power through pushing
Tinxurcrazy 7 months ago
@Tinxurcrazy Hey, you know your stuff. Daf came up with his transmission after touring American car factories, being impressed with the American automatic, which was an entirely different animal. It's interesting seeing the CVT evolve in the 21st century, with many new innovative deviations from the original.
kolbpilot 6 months ago
is it a belt and in the future will it ever need replacing bc of wear on belt?
RzXVeRSaTiiLe 7 months ago
cool
terryhesticles1000 8 months ago
Does Dodge know about this development
youtube.com/watch?v=hgl7IBmUj8o
mjdurack 8 months ago
what if the freaking belt snap off..and i bet u cant even do burn out of it
andrewmylyf 10 months ago
@andrewmylyf CVT belts rarely snap. after a while they do wear out, like any other mechanical thing. but these belts are typically made out of kevlar and/or carbon making them incredibly strong.....and yes, you can do a burnout, snowmobiles are CVT as well as some motorcycles and those have absolutely no problem doing a burnout.
Turbojeep23 9 months ago
@Turbojeep23 Don't forget that many atvs have cvts
nanocoffeebean 7 months ago
@andrewmylyf Trust me, you can do a burnout. If it is tuned and balanced properly, the belt will not snap. We run snowmobiles with garret turbochargers on them, and have little to no problems with the belt.
sponge920 8 months ago
@andrewmylyf There is more risk of the belt slipping off its gear-like cogs, thus heavily reducing torque transfer than for it to snap.
heimerdinger93 7 months ago
Awesome in concept but unless they make it extremely easy to replace the belt then it will be hated by everyone. Also people expect to be able to go 200,000 miles before any transmission issues..... I doubt that belt will make it 100,000
frosty9595 10 months ago
@frosty9595 If you're a realist I want to buy the cars you buy.
gilligasad 9 months ago
Thats the same style that all snowmobiles use.
454apache 11 months ago
@fivedragon53 it has like a billion different speeds, thats the point of being variable!!
animatorSimen 1 year ago
So in other way we can said that CVT has only 2 speed?
fivedragon53 1 year ago
@fivedragon53 in the same way that a circle only has one side... there's an input shaft and an output shaft, the cone's slope represents different sized gears or belt pulleys. the computer is able to adjust the position of the cones on either side to a fine enough degree where the gear ratios effectively become infinite (within a certain spectrum)
DThaeman 10 months ago
Better hope you dont break the belt! it would be a pain in the ass to change it. This is a great idea for snowmobiles and other recreational vehicles because it maximizes engine torque but its not ideal for cars.
TheArcticcatrider 1 year ago
@TheArcticcatrider well i dont know because they have it as an option on the Aston Martin Cygnet and toyota put it on the 2012 prius V and i think that you would only put this kind of transmission in little cars with little motors because i dont think they you handle the kind of torque that lets say a Ford Super Duty is puting out
CarNewsWeekly 1 year ago
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@TheArcticcatrider well i dont know because they have it as an option on the Aston Martin Cygnet and toyota put it on the 2012 prius V and i think that you would only put this kind of transmission in little cars with little motors because i dont think they can handle the kind of torque that lets say a Ford Super Duty is puting out
CarNewsWeekly 1 year ago
This design is already obsolete as far as I'm concerned. DCT is super smooth and way more reliable than this crap. I might be okay with VCT in a washing machine.
kladivous 1 year ago
@kladivous just because something has been around for a while doesn't make the next thing better, anything that breaks on a DCT will cost you, and further a CVT is truly the only seamless transmission type as even in a DCT there is rev drop and rise which you don't have in a CVT, the engine revs to a point and stays there while the CVT adjust itself to gain speed. Also with less moving parts to generate heat, etc. the fluid lasts longer which also takes another cost away.
angusandleigh 10 months ago
This is what I have in my wood lathe. Do it me!
efzt 1 year ago
stolen from BOSCH VDT?? or is it from BOSCH VDT??
TorqueR22 1 year ago
LOL, it's like Variomatic invented thousands years ago by DAF
lemonzawodowiec 1 year ago 26
@lemonzawodowiec exactly the same! DAF invented it in the 1960's.
urbex2007 8 months ago
@urbex2007 Yeah that was a successful car, Just look at all the DAF's you see on the road these days
4thstooge 8 months ago
@lemonzawodowiec Variomatic is one of the first examples of CVT in cars, they just gave a cool name
D370n470r 1 week ago
very simple idea
elhesh20102010 1 year ago
I love automatic gear box, but i don't like this system. I prefeer to feel the "jumps" between gears of an conventional automatic transmission.
Really, when I ging to buy my next car, this will not have a CVT transmission.
joanen1000 1 year ago
@joanen1000 Umm, wtf? The purpose of a automatic trans is to be easy and smooth, not jumpy and choppy. If you want to feel the "jumps" then why dont you get urself a manual trans car like a proper driver.
Gerberbaby922 1 year ago
@Gerberbaby922 If your good you won't feel jumps with a stick ;-)
forrest225 1 year ago
CVTs suck. they sound like they strangle the engine and also there's delay in power output if you decide to accelerate quickly because the computer has to decide where to spin the belt. And it really doesn't matter how powerful the engine is, you still get the grinding sound form the belt and delay in power. if you want a smooth and responsive engine go for a conventional automatic.
ejuoi 1 year ago
wow, this is pretty much the the same as the torque converter i have on my go kart. would of thought for a car it would be more complex. live and learn
rwiebster 1 year ago
Does anyone know how long the belt lasts on a cvt?
jb40021 1 year ago
@jb40021 Depends on who makes it, but the one in my 2010 Lancer GTS is warrantied to 100,000 miles. They last just as long as a regular automatic transmission. I also get "virtual gears" and paddle shifters, all warrantied. It's not a bad deal.
cavaderblood 1 year ago
How are cvts supposed to give better fuel economy if they keep the engine at like 5000 rpm, and wouldnt that shorten the engines life?
Motorfordtoyota 1 year ago
@Motorfordtoyota Hence, most of them have D for normal driving, S for sport, and L for high load slow speed. So if you put it in normal then it will calculate the load through throttle position sensor, MAP or MAF sensor then tranny fluid pressure then it will know what ratio to put out. It'll only hit 5000 rpm or more because u floored it and it will give u the maximum power.
NSX00000 1 year ago
@Motorfordtoyota Lol where did you hear that? My 2010 Lancer GTS with a CVT tranny does 3000 rpm at 90 miles an hour, and 900 RPM at 30 mph, and about 2000 rpm at 55 mph. Not bad at all. In manual mode, it has six "virtual gears" that I can shift up or down via paddle shifters.
cavaderblood 1 year ago
@cavaderblood Well, I was just going by my expirience w/ them (I know, my spelling sucks) but, this is just on gokarts, minibikes, ect. so yeah.
Motorfordtoyota 1 year ago
how does it know to down shift? Like fo rpassing. Is seems that it reacts with speed only. What about load or the throttle position like and automatic with gears?
heatherandpaul2 1 year ago
could some 1 be nice enough to tell me the meaing of cvt?? pls
bazengao 1 year ago
@bazengao It means Continuously Variable Transmission.
NSX00000 1 year ago
aeglane ja kiirus
JyriLaumets 1 year ago
Does this mean the car has no gears? And will the rpms be high at low speeds since the "pinion" will have to spin faster to keep the "idler" moving at a certain speed?
ebradahusla 1 year ago
@ebradahusla Yes it has no gears, and at cruising it sits at low rpms and when you want to accelerate it finds the best rpm to accelerate at.
PedoBearWantsYou 1 year ago
@PedoBearWantsYou And how is the torque curve, is it a straight line?
ebradahusla 1 year ago
@ebradahusla Yeah, I would assume so.
PedoBearWantsYou 1 year ago
excellent explaination!
very best animation!
(sorry my english)
trilokobrazil 1 year ago
as long as it's servicable and easily fixable (politics might prevent that). i can't imagine anyone who'd rather convert their snowmobiles to standard and shift gears thru the snow.
devja71 1 year ago
wouldn"t wanna change the belt. Same design as ski-doos and automatic quads and the belt should be changed once a year. but if its easy to cange id like to have one cause you can clutch it to stay at what ever rpm you want.you can also replace springs to change the engagement of the clutch. stronger spring higher the engagement.
newf8383 1 year ago
userful
JyriLaumets 1 year ago
que buen video
titaniaa 1 year ago
It,s all good for the builder, fast cheap ,but those thing,s have always,s been plagued with lose of power transfer and heat problem,s, the top part of the belt turn,s at different speed than the bottom so unnoticeable slippage result,s from it.
Manual,s are hear for a while yet!
FrankaDith 1 year ago
coool
vivvnsze 1 year ago
wow, the belt need to be very strong, especially for the trucks.
lembah18 1 year ago
@lembah18 Can't beat a Kevlar belt. The car would be on the scrapyard from a rusty body before the transmission belt would be replaced.
LOLDISNEYLAND 1 year ago
@LOLDISNEYLAND that's why i say for the trucks.. Nissan had use it for many years before. i dont see any problem to embed the system into light vehicle
lembah18 1 year ago
Is there any advantage to automatic over CVT? It seems automatic is much more complicated, and the engine power is usually transmitted through a lossy fluid coupled torque converter, and this is just a belt going round two diameter changing wheels.
TimpBizkit 1 year ago
@TimpBizkit The advantage is almost perfect power transmission. Since you have no shifting of gears, there is no delay between gear shifts and the power is kept at peak throughout acceleration. You can electronically control the gear ratio if you need a particular amount of torque whether accelerating or decelerating. Since CVT is a simple transmission, there are less parts, less frictional losses and hence longer life of the transmission components.
LOLDISNEYLAND 1 year ago
@TimpBizkit Sorry I didn't read your initial sentence right. Duh! A Planetary system has the advantage of being able to be melted down to create CV transmissions. :D
I really can't think of any advantages apart from having cheap parts due to there being lots of stock available. Once CVT catches on, it will also be cheaper in parts.
LOLDISNEYLAND 1 year ago
Lol it looks so easyly and cheap, but it's a great idea.
Crustenscharbap 1 year ago
Is that a belt? Oh yeah that looks like a great idea.
testingway 1 year ago
Same a as a snowmachine transmission , 50 plus year old thechnology.
hanmerdan 1 year ago
my 1976 lawn tractor has this transmission
rosserver 1 year ago
this tranny just sucks!!! specially those equipped on calibers
charlypredator 1 year ago
To the best of my knowledge, this technology is pretty old. You can find this even in the old pre WW 2 platten paper printing machine. Its just an improvement on it. Just like internal combustion engine. More than 150 years old technology re invented. Please feel free to reply. TQ
KVLai 1 year ago
This is how my moped works!
There is a video of it in operation on my channel. I think it's genius.
rockyjay2 1 year ago
This kind of transmission is not new. I had a golf cart that had it, however, CVT is new to street cars
nandiito 1 year ago
youre one annoying bastard! you posted this same comment on 3 out of 3 CVT videos I watched
enice482 1 year ago 34
This comment has received too many negative votes show
I'm just letting people know, that's not a reason for you to call me bastard you motherfucker
nandiito 1 year ago
@enice482 youre a dumbass for reading them
1morbidvision 1 year ago
coolerdude44 & chevyblows2001 need to get a room... I'll show you my cvt if you show me your trani...
pkelley7777 2 years ago
Ineresting design, but these transmissions have a poor track record of self-distructing with very low miles. I've seen pages of blogs, and know someone who owns one. If you are thinking of buying a Caliber..a word to the wise..don't.
emeryjk 2 years ago
scooter bikes have this type and go very long , even hold much loinger than normal gearbox
wwilliam7 1 year ago
beautiful rendering. awesome vid.
micmackman4444 2 years ago
I now see said the blind china man!!!
fatsotomuscles 2 years ago
i hate cvt's with a passion. i think they're ruining cars.
coolerdude44 2 years ago
Comment removed
suprchrgr 2 years ago
i work at a Honda dealer and i had to drive the new Insight hybrid and it felt soo wierd. i like the normal automatic transmission gear shift feel when im driving. i have a 94 lincoln and i like the feel of the shift's they are smooth transistions. but the CVT makes everything feel too smooth and wierd. so yeah CVT's are dumb. do you know how often they wear out and start to slip or whatever?
chevyblows2001 2 years ago
@chevyblows2001 lol no, but i'd like to because i bought an altima a couple of months ago. i hate the car, so as far as i'm concerned, slippage can't come fast enough ;).
seriously though, i hate driving it. if i want to accelerate, i have to floor it, then i have to listen to brutal cvt acceleration for about 10-15 seconds as it slowly creeps up from 0-70. being a car enthusiast, i never would have thought i'd say this, but i dread hearing that car's engine.
coolerdude44 2 years ago
hahah wow. yeah thats the problem with them new nissans they ALL have the CVT's they are stupid
chevyblows2001 2 years ago
@chevyblows2001 yes. my dad likes it because he has an extremely... uh... how can i put this nicely... relaxed driving style. he can drive it in a way that he never needs to go over 2,000 rpm because he never drives it quicker than 60 anyway. but for the rest of us, automatics are better.
coolerdude44 2 years ago
hahah yes. i love my automatics. manuals are nice too but nothing like getting in a putting your car in D after a hard day at work.
chevyblows2001 2 years ago
@chevyblows2001 lol no i'd definitely prefer a manual, but i mean that an automatic is better than a cvt
coolerdude44 2 years ago
automatic is EXTREMELY ADVANCED engine. this cvt has much better fuel economi and you just need to change the belt sometimes. cvost nothing, while you must changes the differentials on the gear box after some years, and its bery big work and cost alot, ,even need specieal tools to split the gearbox. this CVT is the future,
wwilliam7 1 year ago
@wwilliam7 i definitely disagree, most people hate the way cvt's drive and feel. i think the doppelkupplongsgetreibe is the future.
coolerdude44 1 year ago
´bullshit? the cvt is extremely mucj economic oand simplier than gearbox and especielly the automatic:S i love to drive scooter (CVT) and the most like it. so why chould the most hate cvt in carrs?
wwilliam7 1 year ago
well i hate it because compared to the conventional automatic i used to own, it gets worse fuel economy and feels slower. i averaged 23 mpg on my old altima, and i average 22.4 on the cvt altima, despite being more "efficient" and despite having higher epa numbers. its noise is terrible, and driving it gives the feeling of a slipping clutch. don't get me wrong, i think the cvt is better than a jerky 4 speed automatic, but not better than a 5 or 6 speed.
coolerdude44 1 year ago
@coolerdude44 Um here's an idea.....learn how to drive.
adamslurch71 1 year ago
Can someone tell me why this system isn't being used on cars? Probably a dumb question, but I have no idea!=P
SleepyStallone 2 years ago
@SleepyStallone
You can find this system on motobecane mopeds in 1960s! but for cars is practically! a new technology
shahinpar 2 years ago
@SleepyStallone nissan maximas and many others have used it since 07
colbrot 2 years ago
Could someone tell me how reverse mode works (perferably in animation)
bmfoshizzle 2 years ago
Using a very small planetary setting and two cluches. Honda cvt use this combinations at else, probably dodge use the same solution
thiago497150 2 years ago
@bmfoshizzle . My Mitzy CVT has a separate clutch and a planetary gearset to give a reverse. Had to comment ont a post here (JcmMagNoo) that said changing a belt is easy (and therefore cheap?). When the belt breaks, hundreds of broken links and flat wire strands go right thru the box. Plus a belt is about $1000 trade. I've just done mine. And selling it pronto.
moyadapne 1 year ago
@moyadapne ?? Your belt broke? What were you doing? Usually CVT lasts a long time. You should check your components i.e. service the vehicle regularily. My planetary system in my car simply lost a few clutch plates due to wear, and I was quoted $2000 to have it repaired. I did the job myself and went to get it tested and I only paid $200 for parts. I found a CVT chain and a belt equivalent for $400 once. Changing a belt or chain is easy so labour cost is low.
LOLDISNEYLAND 1 year ago
@LOLDISNEYLAND . I bought the car with a broken belt, but I knew the last owner/driver, and he drove quietly. 140,000km. The bad thing about belt breakage is the long walk home, whereas a cooked auto trans may still stagger home. I've rebuilt autos for 35 years, and done a couple of cvt's. A cvt belt is $1400 retail in hicksville New Zealand. I realize they're the way the world is moving, but I don't like them, because keeping with traffic from a standstill sounds like you're racing someone.
moyadapne 1 year ago
@moyadapne Because gas is so expensive in New Zealand ($18.9/litre), a CVT car that goes straight to 4000rpm to keep up with traffic, feels wasteful. That Dodge CVT looks exactly like my Mitsubishi one. The only way I can justify a CVT in normal conditions is to move off very quietly so the thing stays around 1500rpm. I hate having to compromise, as a normal auto doesn't suffer from this. Call me old-fashioned. But my '03 Mitzy 1.8 CVT does drink gas. And yes, it's tuned and serviced...now.
moyadapne 1 year ago
actually IU don't understand this shit it
I need more vedios To fully understand it ...... PLZZZZZZZZ
som3astar 2 years ago
Centrifugal clutch just like snowmobiles
MrTrueRedneck 2 years ago
@MrTrueRedneck yup , i have one on my mini bike made by comet industries but the call it a torque converter for some reason , basically the same thing
AxSxKxONE 2 years ago
Not really like a centrifugal clutch.
dkickboxer 2 years ago
It's like a snowmobile. The only reason that it didn't replace the normal automatique transmission is that you can't haul a big load with that type of tranmission without the belt slipping in the pulley. It's only good for small cars not trucks.
ktm250sx09 2 years ago
arrechooo...
ilcodino86 2 years ago
Very good animation; explains the concept clearly and succinctly.
chuanist 2 years ago
it's gearbox you can find in the b-class...
kuifeend23 2 years ago
No, it's because the engine only have to keep the car going, not accelerating it. The speed is high and the engine has fewer RPM's than in the city
moffe247 2 years ago
Well, they also get better mileage on the highway because the gear ratio's are close together, which means that 2000 or 3000 RPM power is going directly into moving the vehicle or at least maintaining the current velocity.
QuantumCarl 2 years ago
CVT belts are less reliable than timing belts~
youngbleeb 2 years ago
Kinda, but not really.
matthewt2010 2 years ago
They don't have a clutch, they have a torque converter, so what? What classifies a shift as being "more efficient" anyway?
MoPar7055 2 years ago
Some of them have an electromechanical clutch. Nothing wrong with torque converters really though, recent ones are pretty efficient with the lockup clutch - should be much more efficient again a CVT since it can quickly find the best gear ratio, whatever the vehicle speed, load or engine RPM.
Conventional automatics will almost always be a little off the most appropriate ratio, and will often hunt between two imperfect ratios.
Not sure why CVTs haven't completely replaced them by now.
batlin 2 years ago 2
americans are not patient with the transmissions. for example in a standard auto push the throttle and it goes down a gear and i have instant acceleration and i pass the car. takes 7-14 seconds max!
in a CVT however, you push the throttle and you have to wait for the engine to pick up the revs, wait again for the speed to pick up and wait again for the car to pass the car thats ahead of you.
16 - 37 seconds at best.
JcmMagNoo 2 years ago
Hmm, I guess that's more of a software problem than a hardware one, though? Would love to drive a couple of CVTs and see how they compare. Actually I've only driven a conventional automatic a few times for short runs - mine is a manual as are most in Ireland.
Not sure why almost everyone drives manual transmissions here - another mystery :D First time I drove an automatic was such a pleasure in comparison to my rustbucket.
batlin 2 years ago
well its smooth and doesn't disturb your driving and it keeps your engine quiet.
and i guess your country imports lesser cars from your neighboring countries i guess.
JcmMagNoo 2 years ago
No, I think it's just a cultural thing. Most people here consider driving automatics to be lazy or boring or "not being in full control" (i.e. switching gears at weird moments during a turn or overtake), which doesn't make much sense to me, but anyway.
Like I said, personally I prefer the smooth easy feeling of an automatic (e.g. not messing about with the clutch constantly in slow start-stop traffic - just take your foot off the brake to creep forward).
batlin 2 years ago
I think this could be solved using a automatic/manual hybrid cvt; In the automatic setting, a computer would operate it, but if you want control, you would flick a switch and use a boat throttle-like lever to control the gear ratios yourself.
bmfoshizzle 2 years ago 2
@JcmMagNoo What are you talking about? Hating on Americans? Constant velocity transmissions have been used by many manufacturers and if you want to blame the design on anyone then blame it on Leonardo you retard. In fact very few American auto manufacturers use CVTs.
dkickboxer 2 years ago
Comment removed
JcmMagNoo 2 years ago
You are an idiot. They are also known as continuous velocity transmissions, due to the fact that they allow an adjustable torque at a constant velocity.
erjohnson227 2 years ago
infinant ratios = Variable. either way its a new generation of automatic transmission. at least fixing one of these is easy as replacing a belt, lubing, and adjusting the software and hardware.
JcmMagNoo 2 years ago
reasons why theres a computer on the transmission (on some cars) is to prevent the belts from moving to the wrong position.
JcmMagNoo 2 years ago
@dkickboxer it's a continuously variable transmission, not constant velocity
MrTrueRedneck 6 months ago
@MrTrueRedneck LOL
originaldriver 6 months ago
so here the cones are just shorter but there are 4 of them?
ac3jc 2 years ago
you'll have same speed in reverse. cool!. you can still race in reverse.
deuctewelle 2 years ago
Looks like it's gonna introduce alot of friction and slippage...
nurbsenvi 2 years ago
CVT is different than an automatic gearbox (witch does, of course, shift more efficiently than any human ever could). CVT doesn't have 'levels' because the different ratios are endless and seamless. furthermore, the original CVT's (also known as Variomatic, invented by the dutch company DAF) did not use a computer, but centrifugal force to increase/reduce radius, quite a brilliant system
koffiejuffrouw 2 years ago
How do autos shift more efficiently than manuals?
MoPar7055 2 years ago
auto shift is always at the right rev count and is always quicker than manual shift, witch means less rev loss (thus less torque loss and more fuel efficiency)
koffiejuffrouw 2 years ago
how is the comp not necessary?? wtffff u've blown my mind mannnnnn
BaltimaVQ35 2 years ago
Where i can get the detailed drawings of such gearboxes... i need them with dimensions.
mostafa1407 2 years ago
isnt that bad for the engine??
i mean keeping it on the hhigh r
pms for soooooo long??
DYNO323 2 years ago
yer thats what i thought.....i have not got a reply yet tho
Subarujoe 2 years ago
it is fine on new engine. especially the great nissan's engine.
soobeng 2 years ago
Engines can rev high for a long time no problems. It's changing engine speed that wears an engine out, not engine speed itself.
Slackboy72 2 years ago
no...
because the high rpm is the optimum engine speed...(not too high)
CVT can save fuel...
CVT can accelerate faster than conventional automatic gears...
isghvi 2 years ago
They are IMHO the way to go for effiency for IC engines. They are simple, in theory longer lasting than autos/manuals, lighter. and my 185+ho Caliber gets 40+MPG and I don't have to drive like an old lady to get it either as the engine is always running at maximum efficency as the CVT keeps the 'ratios' for maximum engine effiency
angusandleigh 2 years ago
Whopping high output there
MoPar7055 2 years ago
So cvt changes power ration based only on rotation speed? Wouldn't it be more useful to change power ratio based on resistance? For example make gear expand if chain pulls it harder..., like when drive train resists engine power(hill, sudden acceleration, flat tire)
theQuestOfHollyGrail 2 years ago
not rlly a huge fan of this new cvt technology. i think alot of car enthusiast including myself would prefer to feel the shifting between gears. it gives that sense of speed... u kno wat i mean?? but i think grandmas would enjoy the cvt technology.
ryu1036 2 years ago
Welcome to the sales world.
What is best vs. What sells will always be a conflict. (Auto industry I am speaking of).
I love shifting, I dont care about gas milage, I dont care about safety, and I really dont care about speed limits. I love the thrill of driving, and its not efficient.
CVT probably could be better in every category with a wee bit of developing. It would fit those who like getting from point A to point B with no excitement.
Different markets for different people.
KBK.
politicalbiker 2 years ago
cvt is potentially the most thrilling of all transmissions.
if you consider the fact that you can feed your tires with a constant supply of optimum torque and horse power.
a cvt on the right motor could do some pretty thrilling things
mediocregenerica2 2 years ago
is it better than manual?? Because the computer can shift better than you can right?
BaltimaVQ35 2 years ago
I'll tell you something fun, with CVT's you don't change gears, because it (normally) doesn't have any. and also a computer is not necessary for this system to function
koffiejuffrouw 2 years ago
Computer switches "levels" and I guess interacts with the engine more because it holds it at optimum rpms. It just seems like the CVT helps compliment the software/engine output with the constant transfer of power??
BaltimaVQ35 2 years ago
CVT disadvatage
weaker than GearBOX
Expensive oil automatic transmission
(16.6 dollar USA FOR Visit Workshop )
voram2568 2 years ago
I like 100 proof, it has a good twang on the taste pallet.
itbeshowinlikeamotha 2 years ago
Go try and use that transmission from that 1910 motorcycle in your car, and after your done, get back to me.
itbeshowinlikeamotha 2 years ago