Main Functions of The Chrysler 300c ECU
An Engine Control Unit (ECU), or a Powertrain Control Module (PCM), is an electronic device which consists of a microprocessor and a series of actuators and is used to ensure the optimum running of an internal combustion engine. The Chrysler 300c ECU communicates and reads the data from a myriad of sensors within the engine and adjusts the various engine performance parameters by using multidimensional algorithms and performance maps.
The functionality and features of the Chrysler 300c ECU are given below:
The Chrysler 300c ECU is complements the direct fuel injection of the vehicle by determining the quantity of fuel that will be injected based on a variety of parameters such as the throttle position, quality and quantity of air and temperature of the engine coolant. The ECU communicates with the throttle position sensor to determine the depression of the throttle, and correlates this information with the data received from the Mass flow sensor. The Mass flow sensor indicates the additional amount of air that is being sucked into the engine, and using this data the ECU can determine the optimum amount of fuel that needs to be injected. Similarly, the ECU gauges the temperature of the engine coolant with the help of the engine coolant temperature sensor and decreases and increases the amount of fuel that is injected accordingly. For example, when the engine hasn't warmed up to the optimum operating temperature, the Chrysler 300c ECU injects additional fuel to warm up the engine.
The ECU is able to adjust the exact timing of the spark which translates into increased power and improved fuel economy. The ECU can detect any knocking in the engine and can retard (delay) the timing of the spark in order to prevent it. Knocking generally occurs at lower revolutions of the engine, as a result, the ECU instructs the TCM to downshift the gear when the rpm becomes too low.
The units are also used to control the idle speed of the engine. The crankshaft position sensor, which is used to determine the rpm of the engine, plays an important role in engine timing functions for fuel injections, valve timing and spark timing.
The Chrysler 300c ECU is also used to control the timing at which the valves open and close during the engine cycle. At higher speeds, the valves are opened sooner compared to lower speeds, and this is done in order to optimize to power and economy of the engine.
The ECU is also used to control the intake and exhaust valves electronically, the benefit being that such engines are capable of starting without the use of a starter motor.
