Variable displacement oil pump
Variable displacement oil pump
(OP)
I saw a press release on the new Porsche turbo and one of the new technologies listed was a variable displacement oil pump to reduce parasitic torque at high rpms.
I Googled a bit but could not find any info on how it works. There is mention of axially displacing gears in the press release.
Can anyone explain it to me?
Thanks, Ian
I Googled a bit but could not find any info on how it works. There is mention of axially displacing gears in the press release.
Can anyone explain it to me?
Thanks, Ian





RE: Variable displacement oil pump
RE: Variable displacement oil pump
Think this could explain to you:
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RE: Variable displacement oil pump
RE: Variable displacement oil pump
RE: Variable displacement oil pump
Take a look at US patent 7,544,052. It gives a good description of how the Porsche gear pump varies output flow. It employs a solenoid control valve and axial displacement of one of the pump gears.
Hope that helps.
Terry
RE: Variable displacement oil pump
I found out later, after going to different powertrain and giving the Hyrdamatics to someone else.
Jay Maechtlen
http://www.laserpubs.com/techcomm