目前 ,国产手扶、小四轮拖拉机 ,小型农用运输车、农副加工动力柴油机 ,大多数都采用的是单缸柴油机。有些操作手在使用过程中 ,只顾使用 ,不注重技术保养 ,导致柴油机技术状态恶化 ,最突出的表现就是耗油量超标。耗油量过大 ,会使发动机冒黑烟 ,污染环境 ,功率下降 ,经济性变 At present, domestic hand-held, small four-wheel tractors, small agricultural vehicles, agricultural and sideline processing of dynamic diesel engines, most are used single-cylinder diesel engine. Some operators in the use of the process, only use, do not pay attention to technical maintenance, leading to deterioration of the technical status of diesel engines, the most prominent performance is excessive fuel consumption. Fuel consumption is too large, will make the engine smoke black, pollute the environment, power loss, economic change