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This article mainly introduces "what is the meaning of ecm module". In daily operation, I believe many people have doubts about what the meaning of ecm module is. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "what does ecm module mean?" Next, please follow the editor to study!

ECM, like the soul of an engine, controls the operation of the entire engine. In order to control the whole engine, there must be many sensors to receive and transmit the engine operation information. after the engine operation information is calculated, ECU will send a control signal to each actuator to control the action of the actuator.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

ECM (Engine ControlModule engine Control Module), like the soul of the engine, controls the operation of the whole engine.

To control the entire engine, there must be many sensors (Sensor) to receive and transmit engine operation information. An engine usually has intake temperature sensor (IAT Sensor), throttle opening sensor (TPS Sensor), manifold pressure sensor (MAP Sensor), water temperature sensor (ECT Sensor), crankshaft angle sensor (Crank Sensor), knock sensor (Knock Sensor), oxygen sensor and so on (O2 Sensor) to send various state information of the engine to ECU (Engine Control Unit) for calculation. ECU sends control signals to each actuator (Reactor) to control the actuator. Common actuators on the engine are idle control valve (IAC), fuel injection module, ignition module, EGR valve, VVT controller, EEC degassing valve and so on.

Readers may be dazzled, but with so many sensors and so many actuators, the most important thing is to calculate and control the optimal fuel injection and ignition timing of the engine, and of course some controls are designed to comply with environmental regulations, such as activated carbon tank degassing valves.

Ignition, idle speed, timing, detonation and fuel injection control have been introduced in various related units. This article talks about "open loop control" and "closed loop control" related to fuel consumption. In the "control science", the so-called "open loop control" means that the controller acts on the actuator according to the written control mode, while the "closed loop control" adds a feedback signal to the control loop. to correct the actuator. In the fuel injection control system, according to the operation condition of the engine at that time, the ECU transmits the fuel injection instruction set under this condition to the fuel injector. Under the control of the open loop, the fuel injection instructions sent by ECU to the injector will not be modified by the feedback signal.

Under the closed-loop control, the fuel injection instruction will be modified by the feedback signal, which comes from the oxygen sensor. The oxygen sensor will detect the oxygen content in the exhaust gas and send the oxygen signal to ECU,ECU. The actual air-fuel ratio will be calculated according to the oxygen content and fuel injection. If the mixture is detected to be too thin (large air-fuel ratio), the ECU will be corrected to the direction of dense fuel; if the mixture is detected to be too dense (low air-fuel ratio), the ECU will be corrected to dilute oil so that the engine runs at the optimal air-fuel ratio, and the fuel consumption of the engine will be minimum.

When will the engine be in closed-loop control and when will the engine be in open-loop control? In general operating conditions, the engine uses closed-loop control, and when the throttle opening is too large, rapid acceleration and cold state, the engine will enter the open-loop state. Especially in the big foot throttle, the engine is not only in the open loop state, but also will enter the fuel injection enrichment mode, so it must be more fuel consumption. Oil prices are rising, and the best way to save fuel is to restrain your right foot!

At this point, the study of "what does the ecm module mean" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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