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Cars today have an Engine Management System that has a wide range of electrical and electronic components. It consists of actuators, relays and engine sensors that work together to provide the engine control unit of the car with the vital data parameters needed effectively govern the different engine functions.
In general, the engine sensors are electro-mechanical devices that monitor the different engine parameters. The engine of the car utilizes various types of the engine such as the Hall Effect sensors, Resistance Temperature Detectors or RTDs, thermocouples and many more that will be discussed in this article.
In addition, different engine sensors deliver real-time vital data parameters to the engine management system. It continuously monitors the parameters of the engine. They also supply the ECU with the changes occurring in the data from time to time.
The Engine control unit (ECU) will recalculate the right ignition timing and air-fuel ratio based on the inputs from the sensors. It will also calculate and supply the engine with the right amount of fuel under different load conditions.
All these sensors are connected to the engine control unit. And because of that, the ECU also monitors any sensor malfunctions. It will collect signals from a faulty sensor then stores it in the ECU’s memory.
Car owners will be able to diagnose any faulty sensors by two methods. First is by reading the memory of the ECU with the aid of “fault codes”. The other method is through a sophisticated engine diagnostic equipment which is commonly supplied by the car manufacturer.
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