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Old 05-07-2022, 06:14 PM   #2 (permalink)
Master EcoModder
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
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I wish you the best of luck.

Pumping losses are directly attributed to high vacuum. Which is why diesels have low pumping losses.

Most high efficiency engines/hybrids use a cam profile or cam phasing to achieve late intake valve closing. This gives lower dynamic compression ratio but increases the expansion ratio.

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