Integral sealing scraper for camshaft phase machine of vehicle engine VVT system

Abstract

The invention relates to an integral sealing scraper for a camshaft phase machine of a vehicle engine VVT system. The integral sealing scraper has a scraper; the scraper is blanked and bent through a flat plate to form a U shape integrated by a main sealing surface, a left side sealing surface, a right side sealing surface and end sealing surfaces at the upper and lower two ends; two side ports of the U shape of the scraper are bent to form an upper elastic piece and a lower elastic piece, which are symmetric about center and have linearly increased elastic force; small window gaps for improving stability of the phase machine are respectively formed in the upper elastic piece and the lower elastic piece; and the upper elastic piece and the lower elastic piece integrally consist of straight line sections parallel to the main sealing surface, arc line sections with one low parts near the center of the scraper and one high parts far from the center of the scraper, and bent sections transited through round angles and bent to the main sealing surface. The scraper adopts a metal material to improve wear resistance so as to prolong the service life of the phase machine; the smoothness of the sealing surface of the scraper is improved, so that the sealing effect is good, and the internal friction force of the phase machine is reduced; and the scraper is simple in part machining and assembly, and increases the assembly production pass percent.

Description

technical field [0001] The invention relates to the technical field of manufacturing a camshaft phaser of a VVT system for an automobile engine, in particular to an integral sealing scraper for a camshaft phaser of a VVT system of an automobile engine. Background technique [0002] VVT system is widely used in new gasoline and diesel automobile engines, it can increase engine power, torque, and reduce fuel consumption and exhaust emissions. The camshaft phase adjuster is an important executive component in the variable valve timing system. It controls the camshaft phaser by switching the oil channel to the camshaft phaser by the oil control valve according to the control signal sent by the engine ECU control system. angle, so as to achieve the purpose of precise control of valve timing. [0003] The VVT ​​system outputs the control signal to the OCV valve from the car ECU. The OCV valve pushes the spool through electromagnetic force to realize the hydraulic oil circuit cont...

AI Technical Summary

Problems solved by technology

On the other hand, the existing scraper-plus-shrapnel structure makes it difficult to monitor the scraper and shrapnel during product assembly, and there are dead spots in monitoring, so that the scraper and shrapnel are missing or wrongly installed; and the scraper-plus-shrapnel structure, by Composition of two parts increases the manufacturing cost, logistics and storage cost, quality control cost of the part, and the product assembly efficiency is low

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