Thread: Spark ignition Diesel engine, AKA your car
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Old 03-09-2010, 12:17 AM   #19 (permalink)
5speed5
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Location: Los Alamos, NM
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TBSS - '08 Chevrolet Trailblazer SS 2WD
90 day: 19.36 mpg (US)

Wife's car - '09 Chevrolet Impala SS
90 day: 22.96 mpg (US)

Big Blue Hippo - '06 Chevrolet HHR 2LT
90 day: 45.99 mpg (US)
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Quote:
Originally Posted by TimG View Post
Mechman-

the greater efficiencies of diesel engines come from their higher compression ratios, mainly, and secondarily from the higher heat content of the fuel.
Also, from the lack of a throttle in the air intake.
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