四冲程发动机由于其结构特点所定,润滑系统一般采用压力与飞溅相结合的方式。发动机工作,由机油泵从曲轴田泵油输入高压油过中,由此送到曲轴、凸轮轴、轴承等高速、重负荷的零件表面;对难以实现压力润滑的位置则利用曲轴、齿轮等旋转飞溅起来或重力下落的润滑油来润滑。如气 Four-stroke engine due to its structural characteristics of the set, the lubrication system generally uses a combination of pressure and splash way. Engine work, the oil pump from the crankshaft field pump oil into the high pressure oil, which sent to the crankshaft, camshaft, bearings and other high-speed, heavy-duty parts surface; hard to achieve the pressure lubrication of the location is the use of crankshaft, gear and other rotation Splash or gravity falling lubricant to lubricate. Such as gas