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肥肥博士:您好!通过贵刊《博士答疑》栏目我学到了不少知识,现有两个问题向您请教。1、一般情况下,四冲程活塞销孔中心与活塞裙部中心偏心位置在活塞的进气侧,但最近我在拆卸本田CH125摩托车时却意外发现,该偏心位置却在活塞的排气侧,这是为什么呢? 2、为什么摩托车实际行驶的百公里油耗都大于车辆使用说明书上的标准?国家有关部门应该制定一种接近车辆实际油耗量的新测试标准,以供用户参考。山东省淄博市崔灿
Dr. Fat: Hello! Through your magazine, “Dr. Q & A” I learned a lot of knowledge, there are two questions to ask you. 1. Generally speaking, the center of the four-stroke piston pin hole center and the piston skirt center are on the intake side of the piston, but recently I accidentally discovered that when removing the Honda CH125 motorcycle, the eccentric position is on the exhaust side of the piston , Why is this? 2, why the hundred kilometers of actual motorcycle fuel consumption are greater than the standard on the manual of the vehicle? Relevant state departments should develop a new test standard close to the actual fuel consumption of the vehicle, for the user reference. Cui Can Zibo City, Shandong Province