The Analysis and improvement of cold temperature Park shake problem of wet 7DCT vehicle
This article mainly analyzes the problem of vehicle shake when the car is in P-gear at low temperatures.By studying the re-lationship between transmission oil flow rate and shake,it is found that when the transmission oil flow rate is high,the whole vehicle shake is also large,and when there is no oil flow in the pump,the whole vehicle will not shake.In order to solve this problem,two op-timization directions are proposed:reducing the oil pump flow rate and closing the oil pump.After experimental verification,it is found that the scheme of opening the oil pump for 10s and closing it for 10s can well solve the problem of vehicle shake when the car is in P-gear at low temperatures.This scheme provides a reference for solving this problem of DCT vehicles.
万方数据
维普
