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Date:         Sun, 27 Aug 2000 17:13:23 -0400
Reply-To:     James W Wagner <wagner01@erols.com>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         James W Wagner <wagner01@erols.com>
Subject:      Re: Better Mileage Anyone? (without going ala Lilley)
Comments: To: Mark Dorm <mark_hb@hotmail.com>
Content-Type: text/plain; charset=us-ascii


I think I remember that an internal combustion engine is about 23% efficient
(work out/energy in), nearly the same as the human body.


James
Mark Dorm wrote:


> The heat (that isn't converted to motion) is still lost energy - its a lack
> of efficiency - its energy released from the fuel that moves out into the
> environment - I forget but isn't a gas engine only about 40 or 60 percent
> efficient in its transfer of energy from fuel to motion - wouldn't we better
> off measuring the speed of the piston upon explosion - and if theres an
> upper limit for how fast a particular piston can move then won't a hotter
> spark (that goes beyond that limit) just result in more heat being lost to
> the system
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