by "Noddy" <me@[EMAIL PROTECTED]
>
Feb 2, 2008 at 12:51 PM
"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.
