ECU in Relation with Sensors
Controlling the engine is the most processor-intensive job on your car, and the engine control unit (ECU) is considered the most powerful computer on most cars today. The ECU uses closed-loop control; this particular control scheme monitors outputs of a system to control the inputs to a system (controlling sensors), managing the emissions and fuel economy of the engine.
By collecting data from all the different sensors in the engine, the ECU knows everything from the coolant temperature to the amount of oxygen in the exhaust. With the data it collects from the sensors, it performs millions of calculations each second, including looking up values in tables, calculating the results of long equations to decide on the best spark timing and determining how long the fuel injector is open. The ECU does all of this to ensure the lowest emissions and best mileage.
ECU receives input from these Sensors
It then sends commands to these components
but
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