Feedback control oil way of variable-displacement oil pump

• Main Authors: LUO JIANLIANG, HUANG XIANGQING, ZHONG CHENGKUN
• Format: Patent
• Language: Chinese; English
• Published: 31.03.2020
• Subjects: BLASTING; CRANKCASE VENTILATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a feedback control oil way of a variable-displacement oil pump. The device comprises an engine oil pressure control valve, a control valve mounting hole and an oil pressurefeedback oil duct, the control valve mounting hole is formed close to the bottom end of the oil pump; the oil pressure feedback oil duct is arranged on one side of the control valve mounting hole; the outer side of the oil pressure feedback oil passage is communicated with the inner side of the control valve mounting hole and the inner side is connected with a pressure control cavity of the oil pump; the oil pump is fixedly connected to the bottom end of the crankcase through bolts and located on the inner side of the oil pan. A through hole is formed in the position, corresponding to the control valve installation hole, of the oil pan, a control valve installation face is arranged on the outer side surface of the through hole of the oil pan, the engine oil pressure control valve is installed on the control valve