SO i had a revelation that I thought I'd share.
I'm a bit of a data geek, and have a habit of pulling pertinent data from the computer while driving, with one of the most important being oil pressure
I have noticed that at hot idle my oil pressure is around 15psi with the oil pump control duty cycle hovering around 50%
I though that meant that the pump was being pushed up 50% from baseline to keep the bearing afloat at low engine speed, but i was wrong.
While going down the road, the oil pressure control is often changing in response to throttle position and boost, this is expected.
What was not expected was that, when you roll into the pedal, the oil pressure control duty cycle drops to zero and the oil pressure jumps..
So getting onto the loud pedal makes the duty cycle drop to zero, the oil pressure jumps to over 40PSI, up to well over 60psi hot @ higher revs.
This is encouraging in a way to me, but the purpose is obviously to minimize load on the oil pump belt, and fuel savings (reduced pumping loss) at the potential expense of engine longevity (imho)
I don't know if this has been discussed but I thought some might find it interesting.
I'm a bit of a data geek, and have a habit of pulling pertinent data from the computer while driving, with one of the most important being oil pressure
I have noticed that at hot idle my oil pressure is around 15psi with the oil pump control duty cycle hovering around 50%
I though that meant that the pump was being pushed up 50% from baseline to keep the bearing afloat at low engine speed, but i was wrong.
While going down the road, the oil pressure control is often changing in response to throttle position and boost, this is expected.
What was not expected was that, when you roll into the pedal, the oil pressure control duty cycle drops to zero and the oil pressure jumps..
So getting onto the loud pedal makes the duty cycle drop to zero, the oil pressure jumps to over 40PSI, up to well over 60psi hot @ higher revs.
This is encouraging in a way to me, but the purpose is obviously to minimize load on the oil pump belt, and fuel savings (reduced pumping loss) at the potential expense of engine longevity (imho)
I don't know if this has been discussed but I thought some might find it interesting.
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