[SEL] The McVickerish Engine

[Elden DuRand]

Jim:

Unlike Diesel exhaust brakes, the McVicker engine is not working as a true compressor when it is in "miss" mode.  The mixture is compressed and expanded, acting more like a spring - taking energy on compression and giving (most of) it back on expansion.

Take care - Elden
http://www.oldengine.org/members/durand 

> -----Original Message-----
> From: sel-bounces at lists.stationary-engine.com
> [mailto:sel-bounces at lists.stationary-engine.com]On
>  Behalf Of Kangas,
> James G.
> Sent: Monday, March 22, 2010 07:59 PM
> To: The SEL email discussion list
> Subject: Re: [SEL] The McVickerish Engine
> 
> 
> Thank you Arnie and Patrick but I'm still a 
> little puzzled. If neither the exhaust nor intake 
> valve is opened at any time while the engine is 
> missing wouldn't that be like a Diesel using it's 
> Jacob brake? The compression without firing will 
> stop the engine very quickly if it was not for 
> the vehicle's momentum forcing the engine to keep 
> turning over.
>   Jim  K