Talking of heat of vaporization, I make a small device used for increasing power in spark ignited engines by water fog cooling the inlet mixture. Is named "Aqua power" and costs around U$S 10.- Regards Carlos ----- Original Message ----- From: Eric Ruttan To: biofuel@yahoogroups.com Sent: Friday, June 07, 2002 4:23 PM Subject: Re: [biofuel] ignition retarding & cetane & fuel properties
I belive Heat of Vaporization is irrelavant in a diesel, as cooling is not important, and detonation is not possable. The artical does not mention that. I would like verification of my understanding. Thanks Eric >From: MH Reply-To: biofuel@yahoogroups.com >Subject: Re: [biofuel] ignition retarding & cetane & fuel properties <snip> > Heat of Vaporization > Heat of vaporization affects engine power and efficiency. It is the > amount of heat absorbed by a fuel as it evaporates from a liquid > state, which occurs when the fuel is mixed with air prior to > combustion. Higher heat of vaporization leads to improved > cooling ability. Higher cooling during the intake stroke of a > spark-ignition engine results in a denser air/fuel mixture. A > denser mixture has two effects: (1) it allows for greater power, > and (2) it permits a greater compression ratio, which improves > power and efficiency. However, although a high heat of > vaporization improves power and efficiency, it also adds to coldstart > problems when there is little heat in the air or in the engine > to vaporize the fuel prior to spark ignition. > The alcohol fuels have much higher heats of vaporization than > gasoline or diesel. > <sniped> _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp. Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor ---------------------~--> Kwick Pick opens locked car doors, front doors, drawers, briefcases, padlocks, and more. On sale now! http://us.click.yahoo.com/ehaLqB/Fg5DAA/Ey.GAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
