Research on Reducing Timing Chain Tensioner Knocking Noise at the Low Speed
The working principle and abnormal sound mechanism of the timing chain tensioner at the low speed are introduced.Based on three engines,the way to reduce knocking noise of tensioner at low-speed is studied.The conclusions are as follows:Reducing the oil leakage increases the damping force of the chain tensioner,which can effectively reduce the low speed knocking noise;Increasing the oil intake of the one-way valve and enlarging the oil storage chamber can effectively improve the low speed knocking noise;Increasing the oil pressure of the main oil channel can effectively improve the knocking noise at low speed;Increasing the spring force of the tensioner plunger can effectively improve the knocking noise at startup.This study has a great significance to improve the NVH performance of the whole machine.
万方数据
维普
