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合理负荷降低油耗发动机在额定负荷下工作,燃料消耗的经济性好。发动机燃料消耗的经济性是用每马力小时耗油量来评价(克/马力小时)。马力小时耗油量是发动机获得单位功的燃料消耗。增加发动机的负荷,马力小时耗油量就小,达到额定负荷时,马力小时耗油量最小,燃料消耗最经济。发动机负荷小时,燃料消耗不经济,马力小时耗油量大,是由于克服发动机的摩擦阻力和驱动辅助机构(机油泵、燃油泵、水泵、风扇、发电机等)方面消耗的功率所占比重增大,使实际输出的轴功率(在离
Reasonable load to reduce fuel consumption The engine at rated load, fuel economy and good. The fuel economy of the engine is estimated in terms of horsepower per hour (g / hh). Horsepower hour fuel consumption is the engine unit of fuel consumption. Increase the engine load, horsepower hours fuel consumption is small, to reach the rated load, horsepower hour minimum fuel consumption, fuel consumption is the most economical. When the engine load is small, the fuel consumption is not economical, and the horsepower hour fuel consumption is due to the increase of the proportion of power consumed in overcoming the frictional resistance of the engine and driving auxiliary mechanisms (oil pump, fuel pump, water pump, fan, generator, etc.) Large, so that the actual output shaft power (in