DF61663N50FPV

DF61663N50FPV Application Field and Working Principle

The DF61663N50FPV is an advanced cumulative injection engine Electric Control Unit (ECU) developed by DENSO Corporation, which mainly controls fuel injection and spark advance when the engine starts or runs. It is widely used in small displacement spark-ignition engine control vehicles. In the application field, the DF61663N50FPV is used for small-displacement engine in middle class vehicles. It has full functions of fuel injection control and spark timing control. Moreover, it has the ability to control up to four cylinders. By using this ECU, the average balance of each cylinder can be achieved to reduce fuel consumption.

The working principle of DF61663N50FPV includes supplying power and control signals, obtaining input signals, and outputting engine actuators control signals. In the step of supplying power and control signals, DC power to the ECU is supplied by the vehicle, and the voltage should be between 8 and 16V. Control signals sent by ECU are engine rev signals and throttle opening signals, which are produced by the sensors located in the engine. After receiving power and control signals, DF61663N50FPV obtains input signals such as displacement of the crankshaft, opening degree of intake valve as well as temperature and pressure, etc. through different sensors. Finally, the ECU will output the proper engine control signals for fuel injection and spark advance. The fuel injection signals are calculated by the calculation performed through the control program previously stored in the engine control unit. The ECU adjusts the timing of spark and fuel injection, the amount of fuel injected, heating current and the air and fuel ratio according to the input and output signals.

In conclusion, DF61663N50FPV is a high-performance ECU used in small displacement engine control of middle class vehicle. It is mainly used to control fuel injection and spark timing. The ECU has the capacity to control up to four cylinders for better average balance, which could reduce fuel consumption. The working principle contains supplying power, control and input signals, then output engine control signals for fuel injection and spark timing.