Engine Control Units: A Guide

6.jpgThe engine control unit is parts of the engine which acts as the human brain and carries all duties to make sure things are running smoothly in the engine of the motor vehicle. This is carried out by sensors in the engine that provide the ECU with maintenance information about the engine, and it’s through this information that is used to adjust engine. The quality of engine depends on its brain, and this is the ECU.


It’s the car computer or brains and provides a variety of systems within the engine of the vehicle like how to control the air and the fuel, when to ignite and the idle speed favorable for the engine. This ECU performs a variety of task like the fuel-air ratio. This ratio is achieved by determining the amount of fuel to inject as many engines use the fuel injection and are based on some readings from the sensor. By pressing the peddles, mass flow measures amount of air while the engine coolant sensor measures whether the engine is hot or not and if it’s found hot, fuel is added and the cycle continues.


ECU also controls the valve control electronically. This is done by providing control on intake and exhaust valve, opening and closing of the valve which also controls fuel consumption in the engine. This also controls hydraulics in cars as it’s all about pushing of shafts and opening or closing of valves.


On ignition of the engine in the car, only a spark is required to start combustion in the combustion chamber and when to spark is maintained or controlled by the ECU.  This ecm diesel engine control unit is capable of detecting the knocking down of the engine; a condition where by the engine is not able to produce sparks for combustion. With this ECU, this knocking can be detected and eliminated when the car is running at a lower rate per minute.


The caterpillar 3176 ecm is capable of variable valve timing, and it controls engine cycle when the valve opens. This opening or closing of the valve varies; at high speed, the valves are opened faster than at lower speeds because the air is optimized for the cylinders.


Another importance of the ECU is that it controls the function e engine timing, fuel injection and valve opening or closing. The camshafts position sensor relays information to the ECU regarding the idle speed. This idle speed control needs to put the engine load at idle, and these variations can be caused by air conditioning or heating of the systems. Lives of the camshafts, temperature of the engine are some factors which affect engine loads


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