How Does A Diesel Engine work?

[TheKomatsuTech]

The ignition in a diesel is caused both by the high compression and injecting the fuel in the cylinder at an exact degree before tdcc.

The fuel is not present during the compression stroke.

[unknownunknowns]

Diesels don't need a spark plugs but I can see them being implemented as it can provide more power due to lowering consumption and better car performance. But that will take a lot of engineering to assure a cool temperature.

[Zenome]

@unknownunknowns Diesels are not designed to be implemented with spark plugs moron. The only plugs diesel engine needs are glow plugs, due to adverse environment conditions that would inhibit the diesel from running the diesel cycle.

[unknownunknowns]

@Zenome I know that current diesels are not designed to but I'm just implying that there MAY be an engineering posibility b/c isn't the idea to STRENGTHEN each stroke of the cylinder?

[Zenome]

@unknownunknowns You can't strengthen a diesel engine by simply applying a spark. If anything, you would reduce its compression ratio by igniting it earlier than what it is designed for at the specific compression ratio to ignite. So you would reduce its power. If your idea was true, engineers would have implemented it decades ago. They're smarter than you think.

[unknownunknowns]

@Zenome Are you telling me that reducing the compression ratio will 'reduce its power'? I ask b/c doesn't that depend on how well the fuel will explode? I don't know but it might be possible and what may be keeping them from doing so is the high R&D. Hopefully, they've already attempted to do so.

[Zenome]

@unknownunknowns Diesel engines are built to combust at a relatively high compression ratio. When the fuel explodes, the ratio is reduced at that cylinder. So if it is ignited early before it reaches its full vertical travel, then yes the power is reduced. The automotive industry, as well as the construction industries are multi-billion dollar industries, each in its own. I doubt the big companies are worried about "R&D" cost.

[unknownunknowns]

@Zenome Then that's why there has to be that precise compression ratio and it has to be smaller. I do hope they can still implement this.

[johnhassle]

@unknownunknowns Smaller would mean it would not follow the diesel cycle, thus it is no longer a diesel engine but rather a gasoline engine.

[GaraLupo]

SWEET! DIESEL ENGINES ARE BETTER ON FUEL THEN GASOLINE IM GETTING A JETA!!!!

[Axion3812]

Thanks a lot mistermath =) I only know the basics and alittle extra about engines, but I want to know enough to have a personal shop and work on mine/friends cars for free or low price

[fr34kaccident]

this guy is my idol already. i want a video of him going in depth about diesel engines. as i am trying to learn more about them. thanks for this short sample anyway. take it easy.

[GrightGangBang]

there is no de compressor device lawl... simple, air and fuel ratio stops the engine stops. ECU cuts off desiel and thats it engine has stopped.

[johanj81]

Actually some engines, especially old ones, hava a valve lifter mechanism, that will keep the exhast valve open in order to shut of the engine. also used for start procedure on old hand started diesel engines

[baby2kent]

that would suck to hand start a diesel...

[TheRealSkateAngel]

....Diesel engines have been around since before ECU control mechanisms (before computers)... so how do you suppose they stopped those diesel engines from running back then? johanj81 is right my friend....

[Bloodplus6]

iiiiiiiiiiiiiiimbecil

[yortonjunction]

Can anyone tell me how a diesel stops. is there some decompression device ?? I ask because mine wont strart or turn over even with the battery fully charged. Is there a cut off valve or relay to control the stop/ start ????

Any help gratefully received,

YJ

[AucklandReactorNZ]

you need to bleed the injectors...

[eclipsetuner99]

wow...

[fingerspies]

Simple formula- this idiot speaking shit+ those who are taking notice of him= Mongs Mongs Mongs Yes thats YOU Mongs the lot of you!!!

[Rimouski418]

Of course, that is for noble gases, but it's still effective with oxygen. If you reduce the volume occupied by the Diesel-O2 mixture, temperature will rise until there is an explosion...

[unimogman404]

Salut Rimouski, Premièrement, dans un moteur diesel, ce n'est pas le mélange diesel-02 qui est compressé mais seulement l' O2, au PMH, le diesel est injecté sous très haute pression ( tout comme la bougie fait feu dans la contre-partie à essence ) et le diesel, au contact de l'air compressé très chaude, s'enflame.

[Rimouski418]

C'est vrai, je me suis trompé, merci de la correction...

[Rimouski418]

One simple formula: pv=nRt

[fingerspies]

My god what is this stupid old fool on about?? I've gotten more sense out of a dead Kangaroo...

[gman2000]

So, if I were to hold my butt cheeks tight long enough, and assuming that I had White Castles the night before, which would make the mixture highly "explosive", then, theoretically, I can blow my ass up, right?? Thanks Manuel!

[woodscritter]

Not likely. Most of the human digestive tract (from near beginning of small intestine, on) is anaerobic- lacking in oxygen. Thus the (anaerobic) microbes there produce CH4, HS, etc. These exit as fuel gas, without oxidizer. Not a combustible mixture.

You'd have to introduce some O2, pre-cheeks.

[travsjet08]

sweet i did not know that

[simon1234simon]

great! now i know how disels work. I alwys knew that they didn't have spark plugs but i never exactly knew how they work

[robin099999]

O my god, how can this person above me possibly NOT know how a diesel engine works?

Its so obvious, oh uer I see why he didn't know, he's american

[rjscott2007]

ur a fag

[travsjet08]

your a fag idot

[its967kevin11]

everyones gota learn at some point...

[chopsticks416]

I had no idea, I thought it was the spark plug.

[mistermath]

thank you for visiting. Manuel is a cool engineer. He enjoys lecturing people

are you interested in sharing information about your city? I have a web stie called roadlovers dot com and we ask peopel to write about their favorite restaurant or place to visit

[CaseIH232]

@mistermath you spam artist