Electronically controlled diesel injection technology is the third milestone since the introduction of mechanical injection technology and supercharger technology since the advent of diesel engines! Domestic use of diesel electric control technology are: Delphi electric monomer, common rail, Bosch common rail, electric common rail, Cummins electric common rail, Hengyang monomer pump and Witt monomer pump. The electronic control unit pump fuel injection system is a new type of fuel injection system that can flexibly adjust the fuel injection amount and fuel injection timing with high injection pressure, which provides more flexible control technology for the fuel injection process of the diesel engine. And significantly improve the injection pressure, with an accurate injection process effectively with efficient combustion control. Electronic single-pump pump system diesel engine, not only improve the power, torque, reducing fuel consumption; and improve emissions and reduce noise, effectively meet the increasingly stringent national environmental regulations. Monoblock pump fuel system as a high-power diesel fuel system ideal for great prospects. First, the advantages of electronic control unit pump Electronically controlled single-pump injection can make a variety of parameters of the regulation and control of various processes more precise and "flexible" than mechanical diesel injection easier to achieve performance optimization ; The electric control unit pump jet breaks through the complexity and limitation of the traditional mechanical diesel injection structure and realizes the precise control of the pre-injection, the fuel injection rate, the injection pressure control and the like; and the control object and the target thereof are greatly expanded. In addition to the conventional Steady-state performance control, but also on a variety of transitional conditions for optimal control, automatic fault monitoring and control, operation of the process automation and adaptive control and so on. In recent years, theoretical research and application of materials have been developing rapidly in this field. With the rapid development of semiconductor and metal film technology and ceramic sintering technology, intelligence, integration and digitization will be the future trends of the sensor. Second, the overall composition of diesel engine electronic control system 1 sensors such as speed sensor, throttle position sensor, temperature sensor, pressure sensor, knock sensor and so on. Function: Collect and monitor the running status of diesel engine and vehicle, and provide necessary control signal to ECU. 2. ECU electronic control unit ECU is a microcontroller as the core of the microprocessor. Function: processing sensor data from different parts of the vehicle to determine the working conditions of the engine, and then through the actuator for accurate control of the engine. The most important control instructions: fuel injection and injection timing pulse 3 actuators such as solenoids, solenoid valves and so on. Function: Executes a variety of control commands issued by the ECU. Third, the common control function of electric monomer pump engine 1. Throttle oil quantity control According to the throttle opening and diesel engine speed to calculate the throttle oil, so the driver can control the diesel engine speed and vehicle speed. 2. The target injection timing control based on emissions, fuel consumption, power and other properties, such as cold start, noise and other aspects of the comprehensive requirements to determine the optimal fuel injection timing. 3. Fuel and fuel injection timing compensation control According to environmental parameters, operating parameters such as atmospheric pressure, atmospheric temperature, cooling water temperature, oil. 4. Cold start and idle stability control Accelerator pedal and engine speed determine the basic start oil and timing, through the water temperature compensation and injection timing to quickly adjust the cold start - warm-idle the entire process. Through each cylinder explosion speed compared with the average speed, and the amount of fuel for each cylinder adjustment, to achieve a stable idle speed. 5. Intelligent power control short-term overload, that is, short-term increase in the output torque limit to facilitate the driver does not shift slope. 6. Variable idle arbitration control According to various temperature, battery voltage and air conditioning request to adjust idle speed. 7. Automatic monitoring, safety protection and adaptive control ECU can monitor and detect electronic control system failure, and to use, maintenance personnel timely display. If the sensor fails, the uncorrected target value stored in the ECU can be used directly or the sensor can continue its operation. If the ECU itself fails, switch to the standby circuit to continue working. ECU control system can identify the control value and the actual value of the deviation, the system's adaptive function to monitor these deviations, the continuous correction of the original computer data, the electronic control system has a better adaptability. 8. The maximum speed control In high speed operation or cold state limit the amount of fuel injection, to avoid diesel engine due to excessive mechanical stress or heat negative. 9. The maximum fuel supply control According to the diesel engine speed and other vehicle operating parameters, the command of the amount of oil to be limited, so as to ensure that the diesel engine due to excessive mechanical stress and thermal load caused damage. 10. Monomer Pump Calibration Correct each monoblock pump to improve cylinder uniformity and consistency. In addition to the above control functions, there are idle speed fine tuning, long idle stop and CAN communication. Fourth, the electronic control unit pump fuel injection system works (see below) V. Conclusion Electronic control of fuel injection system on the engine application, changing the traditional concept of the traditional mechanical engine. Its fuel economy, power, especially in the emission level to improve, is any other kind of power machinery can not match. All this comes from the role of electronic technology play. Nowadays, people have fully realized the importance of sustainable development in the development of modern society. Therefore, the application of electronically controlled fuel injection system on engines will become increasingly popular.
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