Research On Performance Simulation And Test Debugging Method Of A Car Shock Absorber For Robust Design

China has become the world's first energy producer and consumer,while bringing a series of energy and environmental problems.The energy consumption of automobiles is taking up a higher proportion in the total energy consumption and the pollution problem of emissions is becoming more and more serious with the increasing number of automobiles.It has become a key issue in the development of the automotive industry that how to save fuel consumption and reduce emissions and pollution.Thermoelectric power generation is a favorable energy recovery technology with no moving parts,no pollution,simple structure and other characteristics.This technology is used to recover the waste heat from automobile exhaust,and convert the heat energy in the exhaust gas passage into electric energy.Based on the thermoelectric effect and the characteristics of porous media,a porous media temperature difference power generation device is constructed.The porous media material is added to the upper and lower walls of the vehicle exhaust heat exchange passage.Lattice Boltzmann method(LBM),as a mesoscopic numerical simulation method,has the advantages of being intuitive,simple to calculate and easy to program.In this paper,the Lattice Boltzmann method is used to numerically simulate the exhaust heat exchange passage of the thermoelectric power generation device.And analyze and discuss the influence of changing differentphysical parameters(inlet velocity,inlet temperature,porosity of porous media,Darcy number of porous media,thickness of porous media)on the hot surface temperature of the thermoelectric module and on the pressure difference of inlet and outlet in the heat exchange exhaust passage of temperature difference power generation device.Through the analysis of the numerical simulation results,it is found that the temperature gradient near the inlet of the heat exchange exhaust passage is very small.Then the heat exchange exhaust passage of the porous media temperature difference power generation device is further optimized.The porous medium material is not added near the inlet of the heat exchange exhaust passage.Meanwhile the reliability of the optimization is proved.The research content of this paper provides a certain theoretical basis for the development and design of the thermoeletric power generation device.