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美国福特天霸(Tempo)93款轿车在国内有一定的保有量,它装备了2.3L,直列4缸多点喷射发动机。其先进的电控燃油喷射系统(EEC—IV)能根据发动机的工况精确地控制点火正时,喷油正时和喷油量,使发动机具有良好的动力性、经济性和排放性。 一、EEC—IV系统的组成及工作原理 Tempo发动机的EEC—IV系统(福特第4代电脑)由进气系统、燃油供给系统和电子控制系统组成。 在进气系统中,进气量由带自洁功能的热线式空气流量计测量,如图1所示。它具有测量精度高、响应速度快、进气
American Tempo Tempo 93 sedan in the country have a certain amount of ownership, it is equipped with 2.3L, inline 4-cylinder multi-point injection engine. Its advanced electronically controlled fuel injection system (EEC-IV) accurately controls ignition timing, fuel injection timing and fuel injection based on engine operating conditions, resulting in good power, economy and emissions. First, the composition and working principle of EEC-IV system Tempo engine EEC-IV system (Ford 4th generation computer) from the intake system, fuel supply system and electronic control system. In the air intake system, the intake air volume is measured by a hot-wire type air flow meter with self-cleaning function, as shown in FIG. 1. It has high measurement accuracy, fast response, intake