提高摩托车汽油机低速性能的试验研究

Improvement of Low-speed Performance of Motorcycle Petrol Engines

通过对QM50QM-2型汽油机进、排气系统,进气相位和化油器等的改进设计和试验研究,提高了摩托车用二冲程汽油机的低速性能。改进后使原机最大扭矩转速降低1000r/min左右,最大扭矩提高10％～15％,最大功率提高5％～10％,取得较好效果。

The improvement work done on QM50 QM-2 petrol engine has resulted in a reduction of speed at the max torque by 1 000 r/min and an increase of max torque by 10%~15% and a raise of max power by 5%~10%.