With the continuous development of China’s industrialization process, the air pollution index has begun to soar, and it is urgent to improve environmental pollution. In response to this series of problems, China government has immediately introduced many relevant policies for diesel engine emissions. Among them, high-pressure common rail diesel engines with National III and Euro III emissions in the diesel generator set market are becoming more and more popular in the market.
The high-pressure common rail diesel engine refers to a fuel supply system that completely separates the generation of injection pressure and the injection process in a closed-loop system composed of a high-pressure fuel pump, pressure sensor and electronic control unit (ECU).Electronically controlled diesel engines no longer rely on the driver’s throttle depth to control the fuel injection volume of the mechanical pump, but rely on the engine ECU to process the information of the whole machine. The ECU will monitor the real-time status of the engine in real time and adjust the fuel injection according to the position of the accelerator pedal. Time and fuel injection volume. Nowadays, diesel engines are widely used in the third-generation “time pressure control” fuel injection system, that is, high-pressure common rail.
The advantages of high-pressure common rail diesel engines are low fuel consumption, high reliability, long life, and high torque. Diesel engines with common rail emit much less harmful gases than engines without common rail (especially less CO), so they are environmentally friendly compared to gasoline engines.
The disadvantages of high-pressure common rail diesel engines include high manufacturing and maintenance costs (prices), high noise, and difficulty in starting. If the engine is running for a long time, the engine temperature and pressure are high, and more soot and coke will be produced in the cylinders, and the engine oil is also prone to oxidation to produce gums. Therefore, diesel engine oil requires good high-temperature detergency.
Post time: Nov-16-2021
