OIL PUMP FOR MAIN PRESSURE USING MAIN GALLERY OIL LINE FOR COMMERCIAL VEHICLE

摘要

An objective of the present invention is to provide an oil pump for a main pressure using a main gallery oil line for a commercial vehicle which can improve a pulsation pressure and oil pressure delivery phenomenon. The oil pump for a main pressure comprises: a proportional-control variable oil pump (1); an oil intake port (100) to connect an oil pan and the proportional-control variable oil pump (1) to supply oil during an operation of the proportional-control variable oil pump (1); a rear gear train cylinder block (210) to operate the proportional-control variable oil pump (1) by generated engine power; an oil cooler (300) to control the temperature of oil discharged by the proportional-control variable oil pump (1); and an oil filter (400) filter out impurities of oil discharged by the proportional-control variable oil pump (1). A main gallery oil line (211) and a main gallery oil pressure control line (212) are formed on the rear gear train cylinder block (210). The main gallery oil line (211) forms a circulation path in which oil discharged by the proportional-control variable oil pump (1) circulates. The main gallery oil pressure control line (212) supplies oil from the main gallery oil line (211) to the proportional-control variable oil pump (1). A dual-orifice pressure chamber (500) is installed at a position of escaping to a variable oil pump outer ring (10) in the oil line (211). The dual-orifice pressure chamber (500) consists of a portion (501) with a rapidly narrowing pipe along the oil line and an expanded portion (502).;COPYRIGHT KIPO 2020