|
Title: Bosch EV14's 550cc and my AWP 1.8t. KRKTE value? Post by: createddeleted on November 15, 2011, 12:51:30 PM Are my calculations right?
- Static Injector Flow Rate @ 43.5PSI (300kPa): 51.72 lb/hr = 6.52g/s = 544cc/min (+/-3%) - n-Heptane = 0.684g/cc - Stock 3 bar (43.5114) still in place, thus no calculations must be made for different operating vs. rated pressure -actual engine displacement = 1781 cc = 1.781 L. -number of cylinders = 4 Conversion given n-heptane: 544 x 0.684 = 372.096 g/min -50.2624*(1.781/4)/372.096 --50.2624*0.44525/372.096 ---22.3793336/372.096 ----0.06014 Is this right? KRKTE = 0.06014 Just kinda throwing this out there as I would like to know a little of the science behind this. Why do we multiply the injector sizing, such as a 550cc, times the density of n-heptane. If n-heptane is roughly 95% of gasoline why do we calculate the difference at 68.4% instead of at 95% for loss for density? Why is it : 544*0.684 = 372.1cc instead of : 544*0.950 = 516.8cc Density of n-heptane is 0.684g/ml Density of gasoline is 0.720g/ml Given that n-heptane is 95% the density of gas. Title: Re: Bosch EV14's 550cc and my AWP 1.8t. KRKTE value? Post by: judeisnotobscure on November 15, 2011, 03:32:09 PM nevermind
|