[DML] Re: Charles's car

["content22207" <brobertson@xxxxxxxxxxxx>]

It is hard to imagine you could deviate far from stoich in either direction, rich or lean, and an engine still run acceptably. Steve Rice has reported 28 MPG with his carbureted DeLorean (~.048" jets) by holding his speed down, which should put to rest claims that carburetion is inherently fuel inefficient. I tried to run my own car on quite small jets once (.03x"), but it was way too lean -- the engine predetonated.

Trivia: the old 55 MPH national speed limit was not established for safety -- it was established for fuel efficiency.

I get slightly more than 24 MPG @75 MPH in my DeLorean. The difference between that and 28 MPG on a 1,000 round trip (my distance to/from DCS'12) is less than 6 gallons. I am willing to pay an extra $21 for 5 fewer travel hours.

Bill Robertson
#5939

--- In dmcnews@xxxxxxxxxxxxxxx, Bob Brandys <BobB@...> wrote:
>
> Bill, 
> 
> You are correct Charley said is was a Fisk carburetor.  He also said that Fisk was mysterious killed back in the 
> 1950s.  I did a goggle search and found collaborating information to his story.  
> 
> The design patents indicate that the gasoline came through ports in the throttle shaft. 
> 
> We have met another person who was familiar with these 100 mpg carburetor designs
>  at a car show a few weeks ago. 
> 
> One of the key factors was the use of fuel that had a very high vapor pressure and would
> easily volatize and form a gas that could be highly diluted and still combust.   Some validity to this exists. 
> 
> Smokey Yunick, adiabadic engine used this technology.  As you know, there is a D
> with Smokey's prototype engine and we say it run at DMCH a few years ago. 
> 
> Bob
>




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