Oil pump and engine lubrication system
By employing sealing and pressure relief components in the rotor-type oil pump, the problems of oil leakage and pressure pulse noise in the high-pressure area are solved, improving volumetric efficiency and reducing noise, thus achieving energy-saving effects.
CN224496738UActive Publication Date: 2026-07-14CHONGQING SOKON POWER CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING SOKON POWER CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-14
AI Technical Summary
Technical Problem
Existing rotary oil pumps have problems such as oil leakage from the high-pressure area to the low-pressure area, resulting in low volumetric efficiency and abnormal noise caused by pressure pulses.
Method used
Design an oil pump that uses a sealing component to completely separate the high-pressure zone and the low-pressure zone, and sets grooves on both sides of the tooth tip of the inner rotor to reduce abnormal noise. Combined with a pressure relief component, the oil pressure is regulated to prevent oil leakage and pressure pulses.
Benefits of technology
The volumetric efficiency of the oil pump has been improved from 55% to 98%, reducing abnormal noise, saving oil pump power consumption, and optimizing engine fuel consumption.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224496738U_ABST
Abstract
The application provides an oil pump and an engine lubrication system. The oil pump comprises a pump body and a rotor part; the pump body surrounds a closed cavity; the rotor part is arranged in the closed cavity and comprises an inner rotor and an outer rotor arranged outside the inner rotor and forming a plurality of working cavities with the inner rotor; the oil pump further comprises a sealing assembly arranged on both ends of the rotor part in the axial direction, i.e. the sealing assembly is arranged on the end surface of the rotor part facing the pump body and the end of the rotor pump facing the pump cover. The sealing assembly can cover the end surface of the rotor part in the axial direction, and the sealing assembly further comprises a sealing part arranged at the position corresponding to the boundary line between the high-pressure area and the low-pressure area. In this way, the high-pressure area and the low-pressure area are completely separated, that is, the lubricating oil in the high-pressure area will not leak to the low-pressure area along the side wall of the rotor part due to the increase of oil pressure, thereby improving the volumetric efficiency of the oil pump.
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