> ....1. Let us assume that the engineers want at least 50psi oil pressure > at cruising > speed, and that takes about 1/2 gpm. Let us also assume that a mechanical > drive > oil pump puts out 1.5gpm at that engine speed, and the pressure relief > valve is > set for 90psi. So the mechanical pump has to pump 1.5gpm at 90psi, while > the > electric one pumps .5gpm at 50psi. There's room for a large percentage > savings > in pump power... > Let us just throw all that out for this engine. All of it.
I recently read a too-short article (don't recall where for the moment) superficially explaining how these electric oil pumps operate in this application. After considerable testing and development, it has been > > 2. A mechanical drive water pump has to pump enough water to cool under > maximum > cooling needs at all times, the thermostat controls how much actually goes > through the engine. With our electric PWM drive water pump, we get rid of > the > thermostat and pump just enough water to cool the engine. I bet the > savings are > over 90% in the winter, and substantial in the summer except when you're > climbing a hill with the A/C on or towing a heavy load. > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
