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When carburetors were replaced by fuel injection systems, the use of numerous electronic and electromechanical components began in the engine control system. One of these electronic components is the ECU, which plays a central role in the mentioned system. The ECU stands for Engine Control Unit, and is considered the brain for managing this system.

EMS which is abbreviation for Engine Management System refers to a set of components that have been used for many years in automotive combustion engine as a replacement for carburetor system. In essence, the system utilizes multiple sensors to provide performance information for making the right decisions in order to optimize fuel consumption, reduce emissions, optimize power and torque, as well as improve the driving feeling by the ECU. This critical component allows for the achievement of the desired goals by taking into account the various environmental conditions, the driver requirement as well as the complex control strategies and the use of multiple functions.

In essence, the ECU as the heartbeat of an engine management system is an electronic board that uses a dedicated microprocessor (including different layers of software) and multiple input and output circuits provides the possibility to receive, analyze inputs and send commands based on the required conditions (calibration).

In terms of microprocessor processing power used in the ECU, it can be classified into three categories: ECU with 8-bit microprocessor, ECU with 16-bit microprocessor and ECU with 32-bit microprocessor.

The first ECUs used in automobiles were simpler microprocessors that increased the need for uninterrupted computing, increased variables, inputs as well as more tough standards and the need for automakers and the general consumer to use more advanced ECUs than before.

Crouse Manufacturing Co., a pioneer in the production of electronic components since the inception of the engine management system, has been meeting the needs of automakers for over 12 years, providing the ECU with a 16-bit processor, while upgrading options and adding features such as Cruise control, ESC, high emission levels, the use of automatic gearboxes and more have begun designing the 32-bit ECU generation a few years ago and are now ready for mass production, which will soon be unveiled.

16- and 32-bit ECUs are 100% locally produced at Crouse, which includes hardware and software design and verification, various tests, engine and vehicle level calibration, production and final testing. It is also totally possible to add new functions such as dual-fuel vehicles and new options such as turbocharging and  so on based on the existing knowledge and the needs of automakers.