Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Theory: not just disabled cylinders, but a power/compound cylinder engine

dcb · 04-15-2010, 05:16 PM

lol, well psi is psi, and area is area, and since it is measured values the egr doesn't mean anything for these calculations. so you are looking at maybe 20hp in a 13L (large swag), that is to say if you reversed the pressures and put 50psi on the inlet and 40 on the outlet (or any 10psi differential) you could expect 20hp on the shaft then subtract for losses (VE/friction). Pretty far from zero meaning though.

I'm merely trying to point out that backpressure is a very real consideration, not something to be ostracised to the land of magic.

04-15-2010, 05:16 PM	#17 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,038 pimp mobile - '81 suzuki gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Volkswagen Golf TDI 90 day: 53.56 mpg (US) Thanks: 158 Thanked 269 Times in 212 Posts	lol, well psi is psi, and area is area, and since it is measured values the egr doesn't mean anything for these calculations. so you are looking at maybe 20hp in a 13L (large swag), that is to say if you reversed the pressures and put 50psi on the inlet and 40 on the outlet (or any 10psi differential) you could expect 20hp on the shaft then subtract for losses (VE/friction). Pretty far from zero meaning though. I'm merely trying to point out that backpressure is a very real consideration, not something to be ostracised to the land of magic. __________________ WINDMILLS DO NOT WORK THAT WAY!!!