The engine control unit is a key element of the entire engine control system - a kind of automotive "brains." It receives information from all input sensors, processes it according to a specific algorithm and organizes the control actions on the actuators of various systems of the engine. The use of electronic control is able to optimize the main parameters of the engine for different operating modes: torque, power, fuel consumption and emitted gas composition.

Electronic engine control unit connects hardware and software. Analog signals of sensors are transformed into digital signals, received by the microprocessor, using the analog-digital converter. In most cases, the electronic control unit must provide such control actions that are performed using the analog-digital converter. The electronic control unit can perform following functions: control of ignition, throttle control, including idling, fuel injection control, regulation of the composition of emitted t gas, coolant temperature regulation, valve control timing and so on.

The engine control unit communicates the received data to all the electronic systems of the vehicle: anti-lock-brake system, system of passive safety features, automatic transmission, anti-theft system, climate control system and others.

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What you need to know about engine control module replacement: lifetime limits, common defects and their signs, tips and recommendations.

Operational lifetime of the engine control module is not specified.