s18000rpm said:
ENGINE BRAKING does consume fuel, but its negligible (a little bit more than idling).
obviously it'll use more fuel, coz the idling speed is 1000-1500rpm, but you're doin 4000rpm, fuel is pumped in, so...more fuel than idling speed.
just a info - my prof. told me, any vehicle, it emits max emission only when its idling.
geez thanks u r the 1st one to actually get to the question. But i have a doubt in what u r saying. how is more fuel gonna get pumped in when i am not applying the accelerator. The only fuel permitted in the basic fuel injection systems(like in bikes.. not in computer controlled engines there the comp controls many fuel inputs) is thru the idling and accelerator. even idling fuel limit is actually done thru the accelerator as a screw holds is open just a little bit.
so when the accelerator is not open there should be no other way for the fuel to get to the engine. AFIK.
if u think abt it then what is fuel injected in for when no accelerator is applied. i.e to keep the engine running with minimum power. but when we r going down the slop then the engine is kept running with the speed the slope gives us(thru the gearbox cause in neutral the engine and bike movement are separated) but the idling fuel amount is pumped in anyways and always.
all the above are just IMHO intelligent guesses. may be i will have to ask some automobile engineers.
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btw abt the engine waring out. LOL dudes if u go on a slope with neutral and brakes then god help ur maintenances budget. Break pads wear/rub out very fast on slopes due to constant breaking, for that sole reason 'engine breaking', as s18000rpm terms it, is used. This way the engine resistance engine provides acts as a speed limiter.
also it is a very very veru BAD idea to go down long mountain slopes with a switched off engine! do not do that! I have seen enough accident due to this.
That should only be done on roads u know like the back of ur hand and never for more then a few kms. You never know when u might suddenly need ur engines power.
mehulved said:
Then why not rather just ride on horseback?
Do u really think a horse's maintenances(his food, health, cleaning etc) is cheaper then a bikes idling fuel cost. try and ask someone who actually has a horse. u r sure to get a gr8 lecture.
rather funny how these kinda sayings come to be.