A Research Of The Internal-Combustion Engine Sealing—The Simulation And Analysis For Piston Ring Leakage

There is a major impact on the overall performance of the entire internal combustion engine for the study of the internal combustion engine sealing, especially with the working hours and the power density increasing, piston rings due to factors such as friction and leakage problem is getting worse. To ensure the tightness of the internal combustion engine, reduce the amount of leakage, in this paper, the internal combustion engine piston ring system is researched, the mathematical model of gas leak is established, incision piston ring gap, piston rings-Liner gap and the speed to the gas leakage effects are analyzed.Combined with a large number of mathematical models and examples, the mathematical model of the "compression only on the point of static leakage" as the entry point is established, the mathematical model and its parameters are gradual improved, the closer measured data results are get. Based on the mathematical model of the "compression only on the point of static leakage", a more complete and accurate piston ring leak detection, analytical methods and means are further discussed. The dynamic model and movement equilibrium model are established, the simulation software based on visual basic is compiled, pre-simulation be calculated and analyzed to prepare for the subsequent production of the actual testing equipment.After repeated simulation and amendment, ultimately the desired results of dynamic movement equilibrium testing equipment is achieved. The new, more accurate methods and means for the plug ring leakage detection are provided. And the better application platform for Leak detection scientific research and evaluation is established.