"Noddy" <me@[EMAIL PROTECTED]
> wrote in message
news:47a3ccbc$0$11523$c30e37c6@[EMAIL PROTECTED]
>
> "RogerM" <RogerM@[EMAIL PROTECTED]
> wrote in message
> news:13q79mq2rti87a2@[EMAIL PROTECTED]
>> invent an engine that say, is 6cyl, when on the highway at cruising
speed
>> and not labouring (or liberaling) have some kind of device fitted that
>> drops the fuel inlet to say 2 or 3 cylinders to conserve fuel and then
>> when the power was required again switch to extra an cylinder or
>> cylinders for the added power? Just a thought and probably not feasible
>> but I thought some of you guys in here could give an explanation as to
>> whether it would work or not.
>
> Such ideas have been around for decades, and Cadillac had a V8 engine
that
> could progressively shut down from 8 to 6 to 4 cylinders on the fly as
> demand dictated. It wasn't overly successful as it never worked as well
as
> a boosted small engine would or does, and most people who buy cars with
> large engines couldn't give too much of a **** about fuel economy
anyway.
>
> It's a far easier and simpler solution to use a smaller capacity engine
> with forced induction bringing the boost (and ultimately power) on as
> required rather than having a large engine and then trying to shut it
down
> in stages to make it more economical.
>
> --
> Regards,
> Noddy.
Yes, I guess that makes sense as there would still be a certain amount of
drag from the compression of the cylinders that would not be firing. and
just going along for the ride. It's just I was under the impression
Turbo'd/supercharged engines were gas guzzlers.
Beers & Cheers
Roger
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