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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> extropy-chat-bounces@lists.extropy.org [mailto:extropy-chat-bounces@lists.extropy.org] <b>On Behalf Of </b>kellycoinguy@gmail.com<br><b>Sent:</b> Monday, April 11, 2011 11:49 AM<br><b>To:</b> ExI chat list<br><b>Subject:</b> Re: [ExI] Fuel efficient car for anywhere but America<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>I heard that there is more energy in a gallon of diesel vs. Gasoline. Is that true?<br><br>Miles per dollar has always seemed more interesting to me than MPG.<br><br>Kelly<br><br><br><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#999999'>-- Sent from my Palm Pre<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Verdana","sans-serif";color:#1F497D'>Actually it depends on how the question is stated. A Diesel engine converts more energy to useful work from a gallon of Diesel fuel than a gasoline engine converts from a gallon of octane, assuming the Diesel is loaded optimally. Octane burning engines are actually more efficient than Diesel when very lightly loaded. This is what has me thinking small turbo-Diesel engines spinning generators at constant speed and load to hold them in their most efficient rev band.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Verdana","sans-serif";color:#1F497D'>spike<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Verdana","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Verdana","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></div></body></html>