汽车排气法规对电控汽油喷射发展的影响（２）李铁成国外汽车排气法规与汽油喷射发展简况汽车在行驶过程中，可遇到怠速、加速、匀速和减速四种基本工况。在汽车实际运行期间，这些工况反复交替使用。在这些不同工况下，汽车尾气排出的有害物质的浓度是不同的，如表４所示... Automobile exhaust regulations on the development of electronically controlled gasoline injection (2) Li Tiecheng Foreign Automotive Exhaust regulations and gasoline injection Development Brief During the driving process, the car may encounter four basic conditions of idle speed, acceleration, uniform speed and deceleration. During the actual operation of the car, these conditions repeatedly used. In these different conditions, the emission of harmful substances in the vehicle exhaust concentration is different, as shown in Table 4 ...