@jeshiescoots The latter option. It will keep your boost at the maximum level you desire based on the setting. So if you wanted it to not exceed 8 psi, and it started spooling too fast, you would not exceed 8 psi.
Shit man. you got some brains! watched alot of your videos and they are so easy to follow. no big words lol. just simple down to earth educational videos. KEEP IT UP!
it makes me sad that people will come on youtube and bash people who are helping others for no good reason. we all mis-speak from time to time, a simple correct of; 'hey i think you meant throttle instead of ignition' is all that would be required. here this kid is making very good videos on lots of automotive principles and designs only to come to his channel and see people saying he is useless? what a joke. keep up the good work man, the US needs more people who understand this stuff.
Dudes never turned a wrench in his life....doesnt anyone say hot and cold piping anymore? or compressor? and how do you let off the ignition lol, sounds like he can def read books though
@yodavoodo Yeah, sharing knowledge, how unthoughtful of me. As has been pointed out, I misspoke about the ignition deal. Obviously I meant throttle, as I say later on in the video. Instead of playing COD3 I do something useful with my time and make educational videos, and you want to bash me for that? Get a life.
@EngineeringExplained Well i promise im better at COD3 then you are at "sharing" knowledge, allthough the word sharing implies that you have something others don't....when in fact everything you say is all over the net, and in better detail
@yodavoodo So why don't you put that you're an excellent gamer on your resume? Lots of companies are looking for that now. Why the hostility? Plenty of people don't understand these topics, or are interested (hence 1600 subscribers) in my videos. If you don't like them, don't need them, or are somehow offended by them due to a lack of maturity or overwhelming narcissism, then waste your time elsewhere by playing video games and don't bother watching my videos.
@EngineeringExplained HA ill be sure to do that if i ever lose my job...and yes my lack of maturity makes videos on turbo chargers offensive...damn your good
@333autotech Cooler air is more dense, meaning more oxygen. Also, cooler air can expand more than warmer air (takes up less space for the same amount of oxygen), and the more that air expands the greater the pressure difference from combustion, and the greater amount of power an engine can produce.
@sherif89 I believe that is one of the reasons for EGR, but it's more difficult to heat hot air than cool air, and the greater the temperature difference before and after combustion, the more power the engine can create.
@EngineeringExplained the egr's purpose in life is to reduce NOx (oxides of nitrogen)which is harmful for the environment and our health. The Egr does this by rerouting exhaust gases into the combustion chamber which lowers combustion temperatures, which in turn reduce NOx. The exhaust gases lower the temperature because exhaust gas is an inert gas and is non reactive and and it takes up the space of the oxygen in the cylinder.
not at all knocking your video. just wanted to point out the part where you say about the BOV. you said release the ignition you actually meant throttle.
You're doing a good job with these videos. Do you have a degree in mechanical engineering? I'm currently in the process of obtaining my certification to be a automotive technician and after that I'm looking forward to going back to an institute to get a bachelors in mechanical engineering. It's just combining 2 of my favorite things that makes me wanna do it
You shouldve explanied that turbos are really bad in hot weather because the air from the turbo can actually combust before getting to the combistion chamber which results in less power. Yup :)
@psanjay100 Call them whatever you like, there's a turbine used to spin a compressor if you wish to be technical, but both devices are basically the same, just feed air in opposite directions.
@gganana Unlike a supercharger which is instant power because it's connected to the engine, a turbocharger gets its power from the exhaust which isn't instant. When you accelerate there's a few seconds of no boost (turbolag) because the turbo needs to spool up (have enought exhaust past through to reach a certain psi) then it'll kick in. Theres probably a better way to explain but I hope that helped you :-)
@gganana there is a vac (sucking in air) and a press( boost) they are identified on the boost guage. turbolag is the time it takes to switch between vac and boost. bigger turbos have more turbo lag since it takes more air to make the boost hense making the "lag" greater
dang. thanks alot dude. i mostly understood turbos from other videos and stuff but there were still some things that i didnt understand and you completely sumed it all up for me.
question: so i just watched your gas vs. diesel video and you say that diesel runs on hot air and then as the air gets compressed that when fuel is injected to ignite it. so now based on this video my question is, if you have a turbo diesel engine does that mean you do not have an intercooler since you need the hot air to be injected with diesel?
@fanousontheloose The air becomes hot after compression. PV=mRT so as the pressure increases from compression the temperature goes up as well. You do not want hot air coming in, as it is less dense and holds less oxygen. Intercoolers are still used on diesel engines. That said, not all vehicles with turbos use intercoolers, it's just a more efficient manner of achieving the desired result.
I got a question: Can you run a turbo on a car without having a wastegate? If so, what happens if your turbo gets too much PSI? Wont that damage the engine etc ?
@Rowdie999 Yes, you can, but then the turbo has to be sized properly. A wastegate allows for you to use a much smaller turbine wheel, so you'll have better acceleration and higher torque at low rpm. With a larger turbine, you'll experience dramatic turbo lag. Now if you were to put a small turbine wheel with no wastegate, you would experience too high of pressures at high rpms, and yes, and engine not capable of withstanding these higher temps and pressures is toast.
1) Why is an intercooler needed to cool the air? Is the air that the turbine pulls in hotter then atmospheric air?
2) Instead of using a BOV, wouldn't it be better to cut off the flow to the turbo pipe so that exhaust simply exits normally and there is still pressurized air waiting to be used? That way there would not be any parasitic loss from wasted exhaust pressure.
1) As air is pressurized, it builds heat. Heat is what you're using to create power, so air that's already hot is less useful in an engine. Also, cool air is more dense, and has more oxygen. The more oxygen, the more fuel you can burn -> more power.
@EngineeringExplained also the exhaust gas that is used to spin the turbine is hot and that heat carries over through the shaft that is connected to the turbine on the other side.
2) The BOV is only necessary when letting off the throttle (shifting gears). However, you want there to be built pressure in the air chamber waiting to come in once you're back in gear and on the throttle. The exhaust should constantly spool to maintain power. It takes a bit of time for the turbo to spool and create boost (turbo lag) and so if you keep it spinning for the short duration of the gear shift, you can keep your boost into the next gear.
@thekkl dont really know what that last part of the second question was but the BOV is so the air can escape when it passes through to the other side of the intercooler. otherwise it would just escape back through the fan of the turbo and that is completely fine as long as your not running too much boost.
thank you so much for taking the time to create all these videos. I have gone from zero knowledge of engines/vehicles to a working understanding of the innards of an engine, just from your videos. Thank you! (now to just find a way to have a hands-on application)
@danklina You're welcome! Thanks for the support. My advice is find a local junkyard and go take an engine apart. That's one thing that helped me a lot. There's a place near me called LKQ, you pay $2 to get in, and it's full of cars ready to be stripped.
dude i love your videos. you explain things very well, better than howstuffworks does imo. keep making videos that explain engine mechanics i love it. btw you should explain how a clutch works. Ive watched the howstuffworks explanation on it but it doesn't make any sense to me.
@1971SuperLead Also, Where is the carburetor or injection system? Where is the blow off valve in relationship to the carb or throttle plate? Upstream of course. Where does the waste gate blow into? You make it sound like only the waste gate gasses go through the exhaust system.
@1971SuperLead For your second comment: The injection system is directly before the cylinders; the easiest way to locate them is looking at your intake manifold, they'll be directly above in most cases. The BOV is before the throttle plate. This is how it has to be in order to function. When the throttle plate closes (you let off the gas) pressure inside the air intake increases, and needs to escape (rather than pass back through the turbo).
@EngineeringExplained Finally, waste gate gases can either be channeled directly into the exhaust (much quieter and more eco-friendly method) or you can have an external wastegate and dump the exhaust gases directly into the atmosphere. This can be loud, and since it doesn't pass through your catalytic converter it's not the most environmentally sound method. Youtube "external wastegate." It makes a very distinct sound, generally at higher rpms when more boost is created.
@1971SuperLead Many turbos have built in wastegates. Don't think of it as before or after the turbo, but alongside. External wastegates have a split in the exhaust headers that lead to them to release pressure in greater power applications.
Intercoolers are not required, but are dumb not to have since they increase the efficiency and output of the device.
does the waste gate let all of the boost out? or just enough so your boost stays at 8 psi even when your revving higher than that.
jeshiescoots 2 days ago
@jeshiescoots The latter option. It will keep your boost at the maximum level you desire based on the setting. So if you wanted it to not exceed 8 psi, and it started spooling too fast, you would not exceed 8 psi.
EngineeringExplained 4 hours ago
but what about the technique where you reuse the air and not have a bov? german turbo cars have this for example
Frittrich 2 days ago
the best explanation i ever heard
TheShahrum1985 5 days ago
Shit man. you got some brains! watched alot of your videos and they are so easy to follow. no big words lol. just simple down to earth educational videos. KEEP IT UP!
ThePrestonsthename 1 week ago
thanx...videos are very useful. this will help me in my exams and interview....
saurabhtupkar 1 week ago
u r a genius! im gonna watch all your videos and most importantly, i will learn!
mrbigtian 1 week ago 5
@mrbigtian Learn you shall! Glad you enjoy the videos!
EngineeringExplained 1 week ago
@mrbigtian Me too! Exactly how I feel! :)
UnboundLegend 12 hours ago
@UnboundLegend lol, good for u!
mrbigtian 9 hours ago
just to clarify the Throttle body is between the IC and the intake valves?
SnowroxKT 2 weeks ago
@SnowroxKT Correct!
EngineeringExplained 2 weeks ago
DUDE... thanks so much :D
luv ya vids man, (no homo)
Thecrownzone18 3 weeks ago
I used washers to strengthen my aculator spring
WarlDogg 3 weeks ago
This Is What Education Does To You - Good Videos With No Swearing & Trash Talk
ranacherian 1 month ago 3
@ranacherian Indeed, there seems to be a dangerous correlation.
EngineeringExplained 1 month ago
You forgot to mention, Boost gets you laid ;)
hazyazn 1 month ago
@hazyazn How silly of me, always forgetting the most important information!
EngineeringExplained 1 month ago 5
it makes me sad that people will come on youtube and bash people who are helping others for no good reason. we all mis-speak from time to time, a simple correct of; 'hey i think you meant throttle instead of ignition' is all that would be required. here this kid is making very good videos on lots of automotive principles and designs only to come to his channel and see people saying he is useless? what a joke. keep up the good work man, the US needs more people who understand this stuff.
INCC74656I 1 month ago 7
@INCC74656I Thanks! Good to hear.
EngineeringExplained 1 month ago 4
Nice set of videos, simple and good explaination. Don't listen to the haters, good job!
surferboy36O 1 month ago
Great video! Knowledge is a valuable good that ought to be shared, thanks for sharing yours ;)
Phant0mads 1 month ago
Dudes never turned a wrench in his life....doesnt anyone say hot and cold piping anymore? or compressor? and how do you let off the ignition lol, sounds like he can def read books though
yodavoodo 1 month ago
@yodavoodo Yeah, sharing knowledge, how unthoughtful of me. As has been pointed out, I misspoke about the ignition deal. Obviously I meant throttle, as I say later on in the video. Instead of playing COD3 I do something useful with my time and make educational videos, and you want to bash me for that? Get a life.
EngineeringExplained 1 month ago 13
@EngineeringExplained Well i promise im better at COD3 then you are at "sharing" knowledge, allthough the word sharing implies that you have something others don't....when in fact everything you say is all over the net, and in better detail
yodavoodo 1 month ago
@yodavoodo So why don't you put that you're an excellent gamer on your resume? Lots of companies are looking for that now. Why the hostility? Plenty of people don't understand these topics, or are interested (hence 1600 subscribers) in my videos. If you don't like them, don't need them, or are somehow offended by them due to a lack of maturity or overwhelming narcissism, then waste your time elsewhere by playing video games and don't bother watching my videos.
EngineeringExplained 1 month ago 6
@EngineeringExplained HA ill be sure to do that if i ever lose my job...and yes my lack of maturity makes videos on turbo chargers offensive...damn your good
yodavoodo 1 month ago
what is a benefit of the cool air in the piston that is cooled by the intercooler
333autotech 1 month ago
@333autotech Cooler air is more dense, meaning more oxygen. Also, cooler air can expand more than warmer air (takes up less space for the same amount of oxygen), and the more that air expands the greater the pressure difference from combustion, and the greater amount of power an engine can produce.
EngineeringExplained 1 month ago
why wouldn't you want hot air flowing into the pistons , wouldn't that help combustion efficiency?
sherif89 1 month ago
@sherif89 I believe that is one of the reasons for EGR, but it's more difficult to heat hot air than cool air, and the greater the temperature difference before and after combustion, the more power the engine can create.
EngineeringExplained 1 month ago
@EngineeringExplained the egr's purpose in life is to reduce NOx (oxides of nitrogen)which is harmful for the environment and our health. The Egr does this by rerouting exhaust gases into the combustion chamber which lowers combustion temperatures, which in turn reduce NOx. The exhaust gases lower the temperature because exhaust gas is an inert gas and is non reactive and and it takes up the space of the oxygen in the cylinder.
johnbalderas1989 1 month ago
@sherif89 you boost better with cold air....
guitarjoe209 1 month ago
not at all knocking your video. just wanted to point out the part where you say about the BOV. you said release the ignition you actually meant throttle.
MrRambo420x 1 month ago
Thanks, this refreshed my memory
thatGUYfromSKWL 1 month ago
Excellent video!
MultiGogurt 1 month ago
Your videos are awesome. What school are you at?
fcmilsweeper9 2 months ago
@fcmilsweeper9 NC State!
EngineeringExplained 2 months ago
You're doing a good job with these videos. Do you have a degree in mechanical engineering? I'm currently in the process of obtaining my certification to be a automotive technician and after that I'm looking forward to going back to an institute to get a bachelors in mechanical engineering. It's just combining 2 of my favorite things that makes me wanna do it
keep making videos!
JayBird90210 2 months ago
@JayBird90210 Finishing up my final year, so almost! Best of luck to you
EngineeringExplained 2 months ago
You shouldve explanied that turbos are really bad in hot weather because the air from the turbo can actually combust before getting to the combistion chamber which results in less power. Yup :)
13sfaustino 2 months ago
damn so why wasnt this explain in school like this good video much cudos
blkwizzard50 2 months ago
Does it consist 2 turbines or a single turbine & centrifugal compressor ???pls confirm
psanjay100 2 months ago
@psanjay100 Call them whatever you like, there's a turbine used to spin a compressor if you wish to be technical, but both devices are basically the same, just feed air in opposite directions.
EngineeringExplained 2 months ago
Your videos are incredible! I am a student at UTI and these are helping a lot! Thank you so much keep up the good work!
TheOxyMorin 2 months ago
i do not understand turbolag....could u please do a video on that ????? thank you cheers..........
gganana 2 months ago
@gganana Good idea, adding it to the list!
EngineeringExplained 2 months ago
@gganana Unlike a supercharger which is instant power because it's connected to the engine, a turbocharger gets its power from the exhaust which isn't instant. When you accelerate there's a few seconds of no boost (turbolag) because the turbo needs to spool up (have enought exhaust past through to reach a certain psi) then it'll kick in. Theres probably a better way to explain but I hope that helped you :-)
k3v015Mk 2 months ago
@gganana there is a vac (sucking in air) and a press( boost) they are identified on the boost guage. turbolag is the time it takes to switch between vac and boost. bigger turbos have more turbo lag since it takes more air to make the boost hense making the "lag" greater
MrRambo420x 1 month ago
@gganana in addition, the whole time a turbo is spooling (loud whining, orgasmic sound) is the lag.
MrRambo420x 1 month ago
dang. thanks alot dude. i mostly understood turbos from other videos and stuff but there were still some things that i didnt understand and you completely sumed it all up for me.
turbodek99 3 months ago
question: so i just watched your gas vs. diesel video and you say that diesel runs on hot air and then as the air gets compressed that when fuel is injected to ignite it. so now based on this video my question is, if you have a turbo diesel engine does that mean you do not have an intercooler since you need the hot air to be injected with diesel?
fanousontheloose 3 months ago
@fanousontheloose The air becomes hot after compression. PV=mRT so as the pressure increases from compression the temperature goes up as well. You do not want hot air coming in, as it is less dense and holds less oxygen. Intercoolers are still used on diesel engines. That said, not all vehicles with turbos use intercoolers, it's just a more efficient manner of achieving the desired result.
EngineeringExplained 3 months ago
Is it a combination of exhaust gas and outside air that goes back into the engine?
HawaiiJackJr 4 months ago
@HawaiiJackJr In most engines, yes. This is mainly for meeting emission regulations. Eventually I will make a video on exhaust gas recirculation.
EngineeringExplained 4 months ago
I got a question: Can you run a turbo on a car without having a wastegate? If so, what happens if your turbo gets too much PSI? Wont that damage the engine etc ?
Thanks, very helpful videos
Rowdie999 4 months ago
@Rowdie999 Yes, you can, but then the turbo has to be sized properly. A wastegate allows for you to use a much smaller turbine wheel, so you'll have better acceleration and higher torque at low rpm. With a larger turbine, you'll experience dramatic turbo lag. Now if you were to put a small turbine wheel with no wastegate, you would experience too high of pressures at high rpms, and yes, and engine not capable of withstanding these higher temps and pressures is toast.
EngineeringExplained 4 months ago
I have a couple questions:
1) Why is an intercooler needed to cool the air? Is the air that the turbine pulls in hotter then atmospheric air?
2) Instead of using a BOV, wouldn't it be better to cut off the flow to the turbo pipe so that exhaust simply exits normally and there is still pressurized air waiting to be used? That way there would not be any parasitic loss from wasted exhaust pressure.
thekkl 5 months ago
@thekkl
1) As air is pressurized, it builds heat. Heat is what you're using to create power, so air that's already hot is less useful in an engine. Also, cool air is more dense, and has more oxygen. The more oxygen, the more fuel you can burn -> more power.
EngineeringExplained 4 months ago
@EngineeringExplained also the exhaust gas that is used to spin the turbine is hot and that heat carries over through the shaft that is connected to the turbine on the other side.
LMTTrueReview 3 months ago
@thekkl
2) The BOV is only necessary when letting off the throttle (shifting gears). However, you want there to be built pressure in the air chamber waiting to come in once you're back in gear and on the throttle. The exhaust should constantly spool to maintain power. It takes a bit of time for the turbo to spool and create boost (turbo lag) and so if you keep it spinning for the short duration of the gear shift, you can keep your boost into the next gear.
EngineeringExplained 4 months ago
@thekkl dont really know what that last part of the second question was but the BOV is so the air can escape when it passes through to the other side of the intercooler. otherwise it would just escape back through the fan of the turbo and that is completely fine as long as your not running too much boost.
turbodek99 3 months ago
thank you so much for taking the time to create all these videos. I have gone from zero knowledge of engines/vehicles to a working understanding of the innards of an engine, just from your videos. Thank you! (now to just find a way to have a hands-on application)
danklina 5 months ago
@danklina You're welcome! Thanks for the support. My advice is find a local junkyard and go take an engine apart. That's one thing that helped me a lot. There's a place near me called LKQ, you pay $2 to get in, and it's full of cars ready to be stripped.
EngineeringExplained 5 months ago
dude i love your videos. you explain things very well, better than howstuffworks does imo. keep making videos that explain engine mechanics i love it. btw you should explain how a clutch works. Ive watched the howstuffworks explanation on it but it doesn't make any sense to me.
ThePustr117 5 months ago
@ThePustr117 Thank you!! I'm glad I could help! I'll certainly give it a shot and try to help you understand clutches better!
EngineeringExplained 5 months ago
awesome. So nice to see young people interested in these topics
crudeoilsystems 7 months ago
Isn't the waste gate between the cylinder head and the turbo? It makes no sense that it would be after the turbo.
Also, many turbo sytems don't have intercoolers.
1971SuperLead 7 months ago
@1971SuperLead Also, Where is the carburetor or injection system? Where is the blow off valve in relationship to the carb or throttle plate? Upstream of course. Where does the waste gate blow into? You make it sound like only the waste gate gasses go through the exhaust system.
1971SuperLead 7 months ago
@1971SuperLead For your second comment: The injection system is directly before the cylinders; the easiest way to locate them is looking at your intake manifold, they'll be directly above in most cases. The BOV is before the throttle plate. This is how it has to be in order to function. When the throttle plate closes (you let off the gas) pressure inside the air intake increases, and needs to escape (rather than pass back through the turbo).
EngineeringExplained 7 months ago
@EngineeringExplained Finally, waste gate gases can either be channeled directly into the exhaust (much quieter and more eco-friendly method) or you can have an external wastegate and dump the exhaust gases directly into the atmosphere. This can be loud, and since it doesn't pass through your catalytic converter it's not the most environmentally sound method. Youtube "external wastegate." It makes a very distinct sound, generally at higher rpms when more boost is created.
EngineeringExplained 7 months ago
@1971SuperLead Many turbos have built in wastegates. Don't think of it as before or after the turbo, but alongside. External wastegates have a split in the exhaust headers that lead to them to release pressure in greater power applications.
Intercoolers are not required, but are dumb not to have since they increase the efficiency and output of the device.
EngineeringExplained 7 months ago