Only the manufacturer would have this data I think. For industrial engines, they will provide it if they think you're going to buy a couple of hundred.
Otherwise, make friends with someone who owns an engine dynamometer. Paul ----- Original Message ----- From: "MH" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, March 07, 2003 1:50 PM Subject: Re: [biofuel] diesel > > Being a newibe here, I don't really want to start a controversy, but . . . > > > > Every engine has a graph showing horsepower generated per pound/kilogram of > > fuel consumed. When we say "fuel efficiency" we want to run the motor at > > the rpms where the fuel is converted most efficiently. The intended average > > cruising speed of a car should be near this engine speed. > > Hi Paul, > I've seen those graphs you mention for example -- > > Robin model # DY27-2 PERFORMANCE CURVE 5.5 HP Diesel > http://www.fhi.co.jp/robin/product/e_text2/dy27-2_s.htm > > and > > Hatz Diesel > http://www.hatz.com/englisch/main/set-einzylinder-e.htm > Model 1B20 about 5 HP Hatz Diesel Engine > Model 1B30 about 7 HP Hatz Diesel Engine > > My question is where would I and others find this information > for other engines for cars and trucks or small engine mowers > or what have you as described below ?? > > Vehicle output > "Specific fuel consumption for vehicle output" listed as > lbs.HPh (pounds per HorsePower per hour) > g/kWh (grams per kilowatt per hour) > g/HPh (gallons per HorsePower per hour) > > Thank you!! > > > > Slower revs might make the engine last a little longer, but it might consume > > more fuel in the process. For fixed rpm applications like a generator the > > engine should be designed to give its maximum horsepower per unit of > > consumed fuel at the design rpm--this assumes proper design. > > > > Honda built a piston engine that had incredible fuel efficiency, and ran on > > 25 octane fuel, but it's design rpms where about 25,000 rpm. It was about > > the size of a teapot and generated about 25 horsepower. Might not last too > > long OTOH. > > > > Small point, but as an engineer I like precision. > > > > Paul > > 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/ > > > 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/
