Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Canceling out pumping losses of throttle governed engines

aerohead · 06-20-2009, 02:38 PM

The 2-stroke was the great hope of the auto industry,as with a power stroke for each rev,and same pressure above and below pistons,engineers hoped to exploit that tech.,and its high power/weight,and volumetric efficiency.They just couldn't lick emissions issues and everyone has pulled the plug.Honda has a "sparkless" gasoline engine with same BSFC as a diesel and is investigating computer controls to allow operation at low loads where an ignition system is required.------- I've been looking at the Navy's diesel-powered torpedo engine which has only half the "pumping",as a peroxide oxidizer is introduced to the combustion-chamber.There is no intake tract as we understand it in atmo engines.

06-20-2009, 02:38 PM	#14 (permalink)
aerohead Master EcoModder Join Date: Jan 2008 Location: Sanger,Texas,U.S.A. Posts: 16,314 Thanks: 24,440 Thanked 7,386 Times in 4,783 Posts	pumping losses The 2-stroke was the great hope of the auto industry,as with a power stroke for each rev,and same pressure above and below pistons,engineers hoped to exploit that tech.,and its high power/weight,and volumetric efficiency.They just couldn't lick emissions issues and everyone has pulled the plug.Honda has a "sparkless" gasoline engine with same BSFC as a diesel and is investigating computer controls to allow operation at low loads where an ignition system is required.------- I've been looking at the Navy's diesel-powered torpedo engine which has only half the "pumping",as a peroxide oxidizer is introduced to the combustion-chamber.There is no intake tract as we understand it in atmo engines.