Quote:
Originally Posted by NoHaveMSG
I thought you still had to set a precharge pressure.
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The 'spring' pressure that returns the oil, needs to be charged with air, but that is a set once and forget. Essentially, it's the spring on the other side of the accumulator's plunger.
With how BLSFRS is running it, it's open. This is more like a dampener that takes down high rapid spikes and low rapid drops. So if you are in a condition and your pressure goes from 60psi to 2psi, the plunger will start pushing oil back, at 60psi. Of course, as the conditions continues beyond a microsecond and the accumulator piston starts to move, it's pressure drops. Just as an example say you have that 2psi for 5 seconds, at 0 seconds, it's 60psi in the accusump, and 1 second elapsed it may be 40psi, and 2 seconds, 20psi. You can actually calculate how much oil the accumulator holds and what the time/pressure output plot looks like. Once we have flow data, you can make some rough worst case calculations.
With an electronically valved setup, you can fill the accumulator at your peak pressure (or whatever peak pressure you set it to) and then set a minimum value, where the accumulator backflows into the oiling system, say if it dropped below 40. This method gives a bigger pressure delta, which means the accumulator has more volume of oil to push when there is a pressure drop. Plus, it won't continuously recharge, it only recharges once you're over a preset value.