Dear Darren, Peter et al: I'm sure others will answer the question " Also -- what is the standard compression ratios for a diesel engine?? I should know but have forgotten!" and I look forward to Prof. Parikh's answer, but for now... There is no generic answer. Small diesels can be as high as 25/1 (hard to light the fire in tiny chambers) and I believe large diesels can be as low as 14/1. Yours, TOm REED CPC/BEF In a message dated 5/1/00 10:34:41 AM Pacific Daylight Time, dschmidt@undeerc.org writes: Hi; Also -- what is the standard compression ratios for a diesel engine?? I should know but have forgotten! Peter/Belize >> The Gasification List is sponsored by USDOE BioPower Program http://www.eren.doe.gov/biopower/ and PRM Energy Systems http://www.prmenergy.com Other Sponsors, Archives and Information http://www.crest.org/renewables/gasification-list-archive http://solstice.crest.org/renewables/biomass-info/gasref.shtml http://www.crest.org/renewables/biomass-info/ http://www.crest.org/renewables/biomass-info/carbon.shtml