High wear-resistant valve pressurizing oil seal

Abstract

The invention disclose a high wear-resistant valve pressurizing oil seal of an engine. The oil seal comprises a rubber body, a framework and a PTFE (polytetrafluoroethylene) patch, and is shaped by vulcanization bonding by three different materials. After shaping, a main lip port which is in interference fit with a valve rod is generated on the PTFE patch; the lip port of the PTFE patch is in a circular jagged shape; and a pressure-bearing air lip which is in interference fit with the valve rod is generated on the rubber body. Four convex plates which are annularly distributed are arranged on the rubber body 2; and the surface of the convex plate is in clearance fit with the valve rod. Because the PTFE patch has a circular jagged multi-lip port structure, the PTFE patch can be used under high-speed and high-pressure working condition for a long time and is difficult to wear; the pressure-bearing air lip is arranged at the lower part of the lip port of the PTFE patch, the oil leakage amount of the engine can be effectively prevented from entering a cylinder under a turbo charging condition, and the cylinder is prevented from carbon deposition; and four convex plates which are annularly distributed are arranged from the lip port of the PTFE patch to the middle part of the pressure-bearing air lip, when the valve rod works, the valve rod has auxiliary guiding and protection functions, and the service life is prolonged.

Description

technical field [0001] The invention relates to a turbocharging valve oil seal, in particular to a highly wear-resistant valve supercharging oil seal. Background technique [0002] With the rapid development of the automobile industry and the continuous innovation and application of science and technology, the core technology of the automobile is still the engine, and the performance of the engine depends on each component in the power system. The performance of the engine is brought out perfectly. Today's engine types are mainly divided into two types: naturally aspirated and turbocharged. However, the pressure of the turbocharged engine on the intake and exhaust is relatively high, and the current valve oil seal cannot fully meet the requirements. Due to the requirements of use, working under high speed and high pressure for a long time is easy to wear the sealing lip, which will reduce the sealing performance of the engine turbocharger and increase the loss of other parts...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the automobile industry and the continuous innovation and application of science and technology, the core technology of the automobile is still the engine, and the performance of the engine depends on each component in the power system. The performance of the engine is brought out perfectly. Today's engine types are mainly divided into two types: naturally aspirated and turbocharged. However, the pressure of the turbocharged engine on the intake and exhaust is relatively high, and the current valve oil seal cannot fully meet the requirements. Use requirements, working at high speed and high pressure for a long time is easy to wear the sealing lip, which will reduce the sealing performance of the engine turbocharger, increase the loss of other parts, and pose a safety hazard

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