View Single Post
Old 01-06-2009, 12:43 PM   #107 (permalink)
cfg83
Pokémoderator
 
cfg83's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
Thanks: 439
Thanked 532 Times in 358 Posts
thorpie -

Quote:
Originally Posted by thorpie View Post
I am curious about how bsfc maps are produced. Could anyone point me to literature on the subject?
Also, is it correct that with fuel injection the mixture (except for warming up/choke) is always stoichiometric (in correct amounts for full combustion)? If so, then is it solely the amount of fuel/air mixture that is in the cylinder that determines the power output, and this amount is lineally dependent upon pressure in the inlet manifold, and this pressure is lineally related to the throttle position?
Thanks in advance.
Googled this :

BSFC challenge
Quote:
Brake specific fuel consumption (BSFC) measures how efficiently fuel energy is converted into engine shaft power. Wiki does a fairly good job of defining the BSFC but one common practice is to measure this with the engine on a dynamo, full-throttle, and adjusting the load. This typically results in a graph like this ...
CarloSW2
__________________

What's your EPA MPG? Go Here and find out!
American Solar Energy Society
  Reply With Quote