Hybrid Car – More Fun with Less Gas

40 mpg Prius vs 50 mpg European Diesel cars - Page 21

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Posted by Lynn McGuire on May 2, 2006, 6:57 pm

1. Diesels vary their air to fuel ratio.  Under partial loads, diesel air to fuel
    ratio can exceed 100 to one,  Gasoline air to fuel ratio is 14.7 to 1.

2. Diesels use very high compression.  Engine efficiency is a function
    of compression ratio.

3. Diesel has about 11% more efficiency than gasoline on a volume basis.

That is a hypothesis, not a fact.  However, using a vehicle that is more
efficient than another just makes sense if you believe this.


Posted by Bill on May 4, 2006, 12:55 am

Drivel indeed, starting with the 40 mpg Prius bullshit.

Posted by The ambivalent dbu. on May 4, 2006, 1:11 am

Trains and heavy trucks are using diesel engines.  What does that tell

Posted by Bill on May 4, 2006, 1:51 am

There is more energy in diesel than in gas.

Posted by richard schumacher on May 4, 2006, 3:25 am

That for a long time Diesel engines were more economical to operate than
were gasoline engines, back when nobody gave a shit about emissions.

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