Inefficient engines--

[Michael Selig]

Fuel for thought--

----- Original Message ----- 
From: Espen Hilde <mwichstr at online.no>
To: <diy_efi at efi332.eng.ohio-state.edu>
Sent: Thursday, April 29, 1999 1:30 AM
Subject: Re: Fuel injection plugs



I thought the bennefits from diesel was the fact that its run under full
compression during part trottle.making for a compleat and fast burn.

The down side is that the exess air is cooling the combustion .
a gasoline engine on part trottle is run at low compression (less air)
the burn is slower ,we have to try to compensate with more ign.advance,
and gets more negative work done and expose the internals of the engine
with heat for a longer period.(low rpm, high advance =long time period for
negative work) 
The cars are run at part trottle most of the time :-).......exept from some
folks
like myself trying to be effective....(scratching my speed itch)
We are running ineffichent engines all of us that uses gasoline ,most of
the 
time when we are cruising at part trottle.This is really not acceptable.We
are accepting it because at low output the engine is not using that much
fuel
so a increase is not that much.

One way to solwe this is to cut cylinders.Making it possible for the
cylinder to operate closer to max torque where its most effective.

 Espen Hilde