机油消耗量大的主要原因:(1)发动机多处密封装置损坏或变形,机油泄漏,导致机油耗损。(2)机油在各运动副摩擦热和曲轴箱中的高温作用下,发生氧化、蒸发,产生了相应的损失。(3)由于活塞环边间隙过大产生泵油作用,或因气缸、活塞配合间隙过大,机油上窜至燃烧室烧掉,未燃烧部分由排 The main reason for large oil consumption: (1) multiple engine seals damage or deformation, oil leakage, leading to oil consumption. (2) The oil friction and heat in the movement of the crankcase and the high temperature, the occurrence of oxidation, evaporation, resulting in a corresponding loss. (3) As the piston ring gap is too large to produce pump oil, or because of the cylinder, the piston with the gap is too large, the oil ran to the combustion chamber burned, unburned part of the row