四冲程汽油机点火装置的设计与实现

本文以四冲程汽油发动机为基础,该发动机采用了双凸轮轴的磁电机转子设计。针对该磁电机转子的特点,设计采样和点火电路,结合点火补偿策略设计并实现一套新的发动机点火系统。单片机实时读取速度和节气门开度信号,并通过对发动机功率曲线的测量绘制发动机点火提前角的MAP图。整机测试结果显示,该系统提高了摩托车的点火提前角的控制精度和点火能量,提高了发动机的输出功率和转拒。

Design and Implementation of Four-stroke Gasoline Engine Ignition System

In this paper,we study the four-stroke gasoline engine based on the magneto rotor with double-camshaft.We design the sampling and the igniting circuit according to the characteristics of the magneto rotor.On this basis,compensation strategy is adopted to design a new ignition system.The real-time speed and throttle opening signal can be read according to the SCM.The engine ignition-timing map was created according to the engine power curve.The experiments on the data show that the solution improved the control precision of motorcycle ignition timing and the energy of the ignition system,and enhanced the power and the torque of engine.