Design And Analysis Of Hydraulic Control Module For Hybrid Electric Vehicle

At present,the development of new energy vehicles is in full swing,and the rise of new power generation vehicles indicates that the automobile industry will undergo tremendous changes.Hybrid vehicles,as a transitional stage from traditional fuel vehicles to pure electric vehicles,play an important role in the development of China’s automobile industry.Hybrid vehicles can adopt different working modes to adapt to the changing working conditions in the actual driving process,in order to achieve the balance between vehicle power and fuel economy,and to greatly reduce the emission of polluting gases,and its energy saving potential and survival.The period should not be underestimated.The switching of the working mode is usually completed by the control of the clutch.Generally,the wet clutch is used.This task is undertaken by the hydraulic control module.The hydraulic control module sends the electrical signal from the electronic control unit(TCU)to the solenoid valve to This adjusts the amount of oil pressure and flow in the module,thereby changing the state of each component and achieving control of clutch disconnection and engagement.According to an actual project,this paper designs the hydraulic control system according to its requirements,simulates and analyzes the hydraulic system and components,then carries out two-dimensional and three-dimensional design,manufactures the hydraulic module,and finally verifies the structure and performance through the bench test.Reliability.The main contents of this paper are as follows:(1)Study and analyze the types of hybrid vehicles,draw power flow diagrams,and compare their advantages and disadvantages;(2)Propose a P2 hybrid motorized transmission system layout scheme,design the transmission system structure diagram and analyze the power transmission route under different working modes,analyze the switching mode and evaluation index of the working mode;(3)Based on the requirements of hybrid vehicle mode switching,design the hydraulic control system,draw the hydraulic system schematic diagram,and carry out hydraulic system simulation analysis and parameter optimization analysis to obtain the pressure response characteristics of the main components and hydraulic system;(4)Using UG modeling software to carry out three-dimensional modeling of the clutch hydraulic control module,and perform basic strength check analysis on the main components such as the valve body,and carry out in-depth friction and stuckanalysis of the valve core;(5)Prototype trial of the designed hydraulic control module,and through the self-developed hydraulic comprehensive test bench and anti-pollution endurance test bench,the performance test and endurance test of the sample are carried out,and the work under different working conditions is analyzed.performance.This paper realizes the forward development of the hydraulic control system when the hybrid mode is switched in the working mode,and has a certain depth analysis on the frictional force and the stuck state of the valve core,and completes the design,modeling,simulation and test analysis of the hydraulic system.The follow-up work laid a certain foundation.