Piston Profile Optimization Based on Reducing Friction
Hybrid electric vehicle requires high thermal efficiency of engine,reducing friction consump-tion is the effective measures for improving thermal efficiency.The population of piston and connecting rod system friction loss was 40%～60%.Good piston skirt design can make the piston and cylinder suit with a suitable oil film clearance,to produce the best hydrodynamic lubrication,to reduce the consump-tion of friction,and to improve the thermal efficiency of internal combustion engine.A piston design opti-mization was carried out for a hybrid power system with high efficient engine,with the piston average wear load reduced by 56.4%,and passed the endurance test lastly.
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