Patent ID: 7410346
Filing Date: 2008-08-12
Classification: F04C

Abstract:
1. An oil pump, comprising: a plurality of volume chambers each having a volume varied to inhale and discharge oil; inlet and outlet ports, the inlet port being arranged to open over the volume chambers each having an increasing volume, the outlet port being arranged to open over the volume chambers each having a decreasing volume; a relief valve which operates when a pressure of oil discharged to the outlet port exceeds a predetermined value, relieving part of oil in the outlet port; a partition which divides the outlet port into upstream and downstream sections; and a discharge passage which fluidly communicates with the upstream section of the outlet port, the relief valve being disposed in the downstream section of the outlet ports wherein the partition is formed along a flow direction of oil discharged from the outlet port, wherein the discharge passage and the relief valve are disposed adjacent to and parallel to each other with respect to the partition.