摘要
电控汽油喷射系统的基本任务是以减少汽油机有害物排放为主要目标，尽可能兼顾发动机的其他要求。为了实现这一基本任务，空燃比的精确控制是关键，现代电子控制汽油喷射系统都遵循以空气流量和发动机转速为基本控制参数，以电控单元为控制核心，以喷油器为控制对象的控制原则。
发动机控制电路系统的控制内容包括：进气控制、燃油喷射控制、点火控制、怠速控制、排放控制、自诊断系统与报警系统控制、失效保护控制等。发动机控制电路系统由信号输入装置、发动机控制模块（ECM）和执行部件等组成。
关键词：发动机控制电路系统 信号输入装置 发动机控制模块 执行部件
Abstract
The basic task of the electronically controlled gasoline injection system is to reduce the emissions of gasoline engine as the main objective, taking into account the other requirements of the engine as much as possible. In order to achieve this basic task, the precise control of air-fuel ratio is the key, modern electronic control gasoline injection system to follow the air flow and engine speed as the basic control parameters to the electronic control unit as the control core to the injector as the control object Control principle.
The control of the engine centralized control system includes: intake control, fuel injection control, ignition control, idle control, emission control, self-diagnosis system and alarm system control, failure protection control. The engine centralized control system consists of signal input device, engine control module (ECM) and executive components.
Keywords: engine centralized control system signal input device engine control module executive parts
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