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dodge - The history of petrol engines may be dated all the way returning to the 19th century once the first single cylinder engine was designed. This also marked the integration with the "carburetor" into the design of automotive engines. Further improvements within the design resulted in multi cylinder petrol engines, however, the maximum innovation to be integrated into petrol engine design was over in the 80's by BMW after they created a system which controlled the fuel injection, air-flow and the ignition sparks from the engine. Further refinements and iterations on this design have led to a system which has replaced carburetors in modern petrol engines. This computerized system is known as an Engine Control Unit and it consists of an array of sensors used to monitor various engine performance parameters.

Engine control units present in modern cars lead to monitoring and operating every function of an internal combustion engine, from changing the valve timing to manipulating the amount of fuel that's injected based on a few different parameters, the ECU is widely considered the brain of modern automobiles. The Chrysler 300m ECU is situated at the rear of the engine bay, behind the center of the dashboard.

jeep - The Chrysler 300m ECU is in charge of controlling the various parameters of car engines like the air/fuel mixture, the valve timing and also the timing of the spark ignition. Unlike other ECUs, which have a fixed number of engine parameters and mainly control the amount and air and fuel that switches into the combustion chamber, the Chrysler 300m ECU can be a highly advanced control module and is also able to control an enormous array of engine parameters to enhance the power and efficiency of the engine. The Chrysler 300m ECU is a sophisticated computerized device which monitors the engine performance and adjusts it in accordance with predefined performance maps stored on the onboard chip with the ECU. The Chrysler 300m ECU communicates with the throttle position sensor as well as the Mass air flow sensor to determine the amount of air which is being sucked to the engine and adjusts the quantity of fuel accordingly. This not just provides a substantial boost in power, but it also raises the economy of the vehicle. Utilizing this ECU, Chrysler features a new technology referred to as cylinder deactivation which basically involves shutting off a few cylinders of the engine if the vehicle is cruising. This technological innovation not allows for huge fuel savings without sacrificing any power by deciding on a smaller engine.

The chrysler 300, engine control unit is also capable of eliminating engine "knocking". Engine knock may be the phenomenon in which the petrol undergoes combustion prior to being ignited by the spark plugs, and as such, knocking can cause a great deal of damage to the engine. However, when the Chrysler 300m ECU detects an imminent knocking effect, it adjusts the valve timing and delays it by a few milliseconds in order to avoid premature combustion with the fuel. The Chrysler 300m engine control module greatly raises the power, fuel economy and efficiency with the engine and the effectiveness with this device is evident from its widespread adoption