Great, a four banger that can't rev.

On 10/25/05, John M McIntosh <[EMAIL PROTECTED]> wrote:
>
> Saw this news report today, I'll post just a bit of it.
>
> "Mechanically, an HCCI engine, like a conventional gasoline engine,
> sends a finely balanced mixture of air and fuel to the cylinders. In
> a conventional gas engine, a spark plug ignites the air-fuel mixture
> to create power. But in an HCCI engine, the air-fuel mixture is
> compressed by the piston until rising heat inside the chamber ignites
> the mixture -- a process similar to the one that a diesel engine uses.
>
> Experts believe vehicles powered by gasoline HCCI engines could
> potentially offer the big fuel economy of a diesel without high
> emissions of nitrogen oxides and sooty particulates -- a problem that
> hampers the wider use of diesel engines globally.
>
> But standing in the way of an early commercialization of HCCI engines
> are obstacles that have sidelined the technology since auto makers
> first began experimenting with it in the 1970s. It is extremely
> difficult to make an HCCI engine run smoothly at very low and
> extremely high speeds because engineers can't control the spontaneous
> combustion in those ranges.
>
> According to the engineers, Honda has been able to clear obstacles to
> create a prototype four-cylinder HCCI engine that runs smoothly in a
> low-to-medium speed range. That, they said, should represent about
> 65% of the load range necessary to run a gasoline engine properly on
> the highway. The main challenge left to clear is high speeds, or
> above 4,000 revolutions per minute, the engineers said. A typical
> Honda gasoline-fueled engine covers a range reaching 6,000 RPMs."
>
>
> --
> ========================================================================
> ===
> John M. McIntosh <[EMAIL PROTECTED]> 1-800-477-2659
> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com
> ========================================================================
> ===
>
>
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--
Gabriel Soto
Southern California
1987 300D 230K=-

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