小型柴油机电动临时增压系统性能试验

为解决小型柴油机在短时间超负荷工作时动力不足和冒黑烟的问题,设计了一种电动临时增压系统.该系统由压气机、直流无刷电动机、车载电源和开关组成,采用24 V车载蓄电池供电,在发动机超负荷工作时在短时间内进行电动增压,蓄电池能量消耗少.台架试验表明,该增压系统增压比在1.014～ 1.020之间时,柴油机功率提升5.0％ ～9.1％,燃油消耗率下降8.5％ ～14.0％,增压效果明显,排气烟度有所改善,压气机的启动瞬态响应时间在6s之内,满足小型柴油机克服临时动力不足的需要.

Experiment on Electric Temporary Turbocharger for Small Diesel Engines

Small diesel engines have weak dynamic performance and emit black smoke when working overload in a short time. With the aim to solve that problem, a kind of electric temporary turbocharger was designed. The system includes a supercharger driven by DC brushless motor, power supply system on board and a switch. The system is powered by a 24V battery and does not consume too much power due to its short running time. Bench test showed that the supercharging ratio of the electric temporary turbocharger was between 1.014 and 1.020. The power of diesel engine increased by 5.0%~9.1%. The fuel consumption decreased by 8.5%~14.0%. The smoke exhaust problem was improved. Test results indicated that the electric temporary turbocharger could meet requirement when the small diesel engines were weak dynamic performance temporarily.