Quote:
Originally Posted by solidsnake11
I have a question iirc everything I read said that the wear would be on the high side of the pump, it is where the bubbles implode and wear the metal. If that is correct, your pumps erosion is on the low side. It would seem that it is building pressure on the low side before it goes into the gears. I would guess this is from squeezing oil into the gears at high speed. The little scallop on the high is to slow the pressure rise of the oil as it transitions from low to high pressure this reduces the implosion of cavatation.
Maybe the ramp on the inlet of the gear is not a great idea at high velocities. I remember reading about engineers trying to break the sound barrier and right before the engine would stall. It was discovered that the funnel to the jet turbine needed to be inverted because so much air got crammed in that the air would stall.
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No. cavitation ALWAYS happens in the low pressure parts, actually the part with the lowest pressure is where it starts. Itīs the low pressure that makes the disolved gasses convert into real bubbles. As soon as the pressure increases a little, the bubbles implode and cause the metal erosion (this is still in the pumpīs inlet).
What it does in the high side is kill mass flow and cause huge pressure oscillations:
(again taken directly from the research cited and linked in my first post)
THAT is what destroys your bearings by oil starvation.