Posted by buickanddeere on August 12, 2015 at 10:09:52 from (184.151.36.135):
In Reply to: Compression Ratio posted by Moondoggie on August 12, 2015 at 07:28:59:
Cam timing figures into it. Diesel engines and industrial gassers have sort duration came with very little overlap.
Make for excellent low end torque for both. Short duration is Essential to make a diesel start. However it's why diesels make rpm power but fall flat when revved.
The Fiat VM Motori diesel in the Dodge , Cruz and Canyon use variable timing twin overhead cams . To allow starting and high rpm , high HP per cubic inch operation for a diesel .
Compression pressure will also vary with cranking rpm. All other parameters identical. An engine cranked at 800 rpm will show more pressure than an engine cranked at 100rpm.
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