Patent ID: 8925513
Filing Date: 2015-01-06
Classification: F01M,F16H

Abstract:
1. An internal combustion engine oil supply system contained in a body of the engine, in which a pump casing common to first and second oil pumps having a common pump shaft rotated interlockingly with rotation of a crankshaft of the engine is provided with a main suction port common to said first and second oil pumps, and first and second relief valves are individually connected to discharge passages of said first and second oil pumps, wherein said main suction port is partitioned by a partition wall provided in said pump casing into first and second suction ports, said pump casing is formed with a first suction passage which extends from said first suction port to a suction side of said first oil pump and a second suction passage which is formed independently of said first suction passage so as to extend from said second suction port to a suction side of said second oil pump, and release ports of said first and second relief valves are connected to said second suction passage.