Question about crossport/high pressure reliefs
Hey gang. The above example is specifically from Rexroth A4VG 40 series but I believe 32 series is the same.
So in the above example fluid is being ported from B>A. Say we encounter a pressure spike that exceeds POR and cracks the relief on the B side of the loop.
My understanding has always been that this relieved fluid will go thru the check valve on the A side of the closed loop as that is the low pressure/suction side of the loop and keeps things "closed loop"
The hangup/rub for me here is the charge pressure relief passage being shared with this circuit.
Is my knowledge of the system correct? Or would any pressure higher than charge pressure relief setting (let's call it 400psi in this case) cause the relieved oil from the cross port/high pressure on the B side to flow thru the relief and dump back to tank??