【摘要】 本文从理论上分析了发动机活塞销偏置的目的,提出将EQ6100汽油机活塞销由原来向主推力面偏置改为向次推力面偏置。实验结果表明,活塞销改为向次推力面偏置后,发动机的经济性及动力性均得到了改善。更多还原

【Abstract】 The purpose of offsetting of engine piston pin is analyzed theoretically and it is pointed out that the direction of offsetting should be determined according to the construction features of the engine itself. It is proposed that the direction of offsetting of model EQ6100 gasoline engine has to be changed from originally toward the main thrust face to toward the minor thrust face in order to match with the pressure center formed in the combustion chamber during ignition. This new arrangement not only reduces the impingement of piston on cylinder sleeve when the direction of thrust force changes, but also protect the skirt edge against excessive wearing, resulting in considerable fuel saving and operating reliability.Tests show that the maximum fuel saving of 9.8g/(kW·h) and average fuel saving of 4.8g/(kW·h) have been realized.更多还原