BL1.8T型发动机(图1)是华晨汽车制造厂自主研发的汽油涡轮增压发动机,其燃油喷射和点火由发动机控制单元(ECM)控制,ECM通过氧传感器、曲轴位置传感器、进气温度传感器及进气歧管绝对压力传感器等输入信号。根据ECM的内部预先设计的程序来控制相关执行器,从而实现对汽油机在各种工况下的喷 The BL1.8T engine (Figure 1) is a self-developed gasoline turbocharged engine from Brilliance Auto. Its fuel injection and ignition are controlled by an engine control unit (ECM). The ECM is controlled by an oxygen sensor, a crankshaft position sensor, an intake air temperature sensor And intake manifold absolute pressure sensor input signal. According to ECM’s internal pre-designed program to control the relevant actuators, in order to achieve the gasoline engine in a variety of operating conditions of the spray