[Vwdiesel] A few TDI followup questions

[Area31 Research Facility]

Thanx for the correction.  I am still trying to wrap my brain around the
diesel engine concept, having only begun my experience with them this year.
I have plently of past experience with gasoline engines and when you make a
gasoline engine bigger, or increase it's HP output,  it takes more fuel just
to idle the darned things.

Rob

----- Original Message -----
From: "Shirley, Mark R" <MarkRShirley at eaton.com>
To: "Area31 Research Facility" <stephensrw at stn.net>; "McCanless, James"
<james.mccanless at lmco.com>; <vwdiesel at vwfans.com>
Sent: Wednesday, May 11, 2005 1:46 PM
Subject: RE: [Vwdiesel] A few TDI followup questions


MPG is primarily related to vehicle weight and to a lesser
extent, aerodynamic performance.  Not HP.  Since diesels are
unthrottled, unless you are actually USING the 150hp all the
time, you will get the same MPG (over very close) to the
90HP version of the same engine.  Not being tied to a specific
air / fuel ratio is one of the great benefits of the diesel engine,
you use only enough fuel to keep the vehicle moving and no more.

> Holy schmokes.  Well at 150 HP and 50 MPG US there ain't
> gonna be anything
> left like schmoke coming out of the pipe.  I am scheptical as
> this, at first
> blush sounds like free energy.  Why didn't the engineers try
> instead to make
> a 75 HP engine that gets 100 MPG US?  I'd pay money for one of those.
>
> Rob
>
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