Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post

ksa8907 · 12-08-2012, 10:52 AM

So, i cant find anywhere a bsfc chart for my car and instead am trying to relate piston speed to BSFC to give me an idea of where i need to be. Obviously a lot of other factors play into this, but im confident i can get to a formula that will predict best bsfc based on the stroke of any engine.

i have a spreadsheet and there are some trends popping up as i enter more engines. has this been done before? is there a well known formula already in existence? tips?

*edit* I think im seeing a pattern of best bsfc between about 7.5 and 10-10.5 [m/s] piston speed.

12-08-2012, 10:52 AM	#1 (permalink)
ksa8907 Master EcoModder Join Date: May 2012 Location: Tampa, FL Posts: 1,745 Volt, gas only - '12 Chevrolet Volt Premium 90 day: 38.02 mpg (US) Volt, electric only - '12 Chevrolet Volt Premium 90 day: 132.26 mpg (US) Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid 90 day: 21.48 mpg (US) Thanks: 206 Thanked 420 Times in 302 Posts	Trying to relate piston speed to BSFC So, i cant find anywhere a bsfc chart for my car and instead am trying to relate piston speed to BSFC to give me an idea of where i need to be. Obviously a lot of other factors play into this, but im confident i can get to a formula that will predict best bsfc based on the stroke of any engine. i have a spreadsheet and there are some trends popping up as i enter more engines. has this been done before? is there a well known formula already in existence? tips? edit I think im seeing a pattern of best bsfc between about 7.5 and 10-10.5 [m/s] piston speed. __________________ Last edited by ksa8907; 12-08-2012 at 11:03 AM..