"Sam the Bam" <samthebam1@[EMAIL PROTECTED]
> wrote in message
news:993f6e42-2d59-4ac6-81e2-33f9ede9aebd@[EMAIL PROTECTED]
> On May 6, "travis...@[EMAIL PROTECTED]
" <travis...@[EMAIL PROTECTED]
> wrote:
>> They coast downhill with the engine off and do not use
>> compression braking, which adds a few mpg. I've
>> tested this **** in a non hybrid car, btw, coasting downhill
>> or on flats versus running against the engine's compression.
>> You can recover 10% mpg just by aggressive coasting.
How much fuel does an engine use when you are going downhill with your
foot
off the throttle, using engine braking? I'd expect it to be about as much
as
with the engine idling. Just because the engine is running faster and
there's a greater throughput of air due to the more frequent induction
strokes, why should that cause more fuel to be used, assuming you have
fuel
injection rather than a carburettor?
Is the fuel consumption the same if you coast downhill with the engine on
but the clutch pressed and/or the transmission in neutral?
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