REFLECTOR: Auto engine installed 172

[Jim Agnew]

Welcome to the world of physics that most people don't think about when it comes 
to Hybrids.  The manufacturer's always tout their gas saving features while 
ignoring the large energy deficit they start with building all of the additional 
parts, i.e., batteries, controllers, electric motors, extra weight that has to 
be moved around, etc. Subtract the energy deficit from their reported mileage 
and you get a much different picture of their savings.

Jim

James F. Agnew
Jim_Agnew_2 at Yahoo.Com
Tampa, FL
Velocity 173 Elite Aircraft Completed & Flying




________________________________
From: Don Johnston <don at numa.aero>
To: reflector at tvbf.org
Sent: Fri, November 12, 2010 8:06:32 AM
Subject: REFLECTOR: Auto engine installed 172

What bugs me is that there are now parking spaces for "hybrids" but I can't use 
them with my VW TDI. :-(


Subject: Re: REFLECTOR: Auto engine installed 172
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Message-ID: <4CDC9E9C.2070503 at awpi.com>

Wikipedia says the Prius THS II engine is 37% efficient.
The Volkswagen 3.3L TDI engine is 41.1% efficient which they are showing
as a SFC of .33, which is a little better than my Franklin.

So, that Prius engine is pretty small and doesn't get better than the
TDI engine.  Why didn't they use a TDI engine instead?

My guess is weight, and power requirements.
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