Design And Optimize On The Balancemechanism Of LC196F Engine

The internal combustion engine will vibrate severely and generate much noise,while the rotating and reciprocating inertia force are not eliminated.And vibrations will also accelerate damage to the components of the internal combustion engine and shorten their life span.Therefore,it is an important subject to reduce the engine vibration.Moreover,because of the single cylinder engine structural characteristic,its vibration is more prominent,and it is more practical and valuable to study the vibration of the single cylinder engine.The work is supported by LC196 F engine project,and in this paper,the single cylinder engine vibration has been analyzed and controlled.Through the calculation and checking calculation of the single cylinder engine balance mechanism,CAE analysis and vibration test,designs and optimization of LC196 F engine balance mechanism have been accomplished.The results are list as follows:1.According to balance theory of the single cylinder engine,the counterbalance schemes of LC196 F engine crankshaft and balance shaft have been studied,and then checking calculation of LC196 F engine balance mechanism and components designs have been completed.2.LC196 F engine balance mechanism has been optimized based on the results of the CAE analysis and experiment.The largest vibrating acceleration is reduced by about 28%.3.CAE analyses of the balance mechanism have been made,and according to the optimal results the prototype is made and tested,which decreases designing cycle and accumulates experience in CAE.Design and optimization of LC196 F engine balance mechanism have solved its violent vibration,and finally have satisfied customer requirements demands,which makes this kind of engine succeed in obtaining a 10 kW-engine market share and fills up the blank of the engine market.And it not only brings great profits for the enterprise,but also achieves the company’s "Driven by Techniques" strategy.This product reflects the differential technology advantages which promotes greatly the market recognition and competitiveness of the enterprise.