What is the working principle of diesel fuel system?

A diesel engine is different from a gasoline engine. It burns diesel oil, which has high viscosity and is not easy to volatilize. Generally, it is impossible to form a uniform mixture outside the cylinder through the carburetor. Therefore, the method of high pressure injection is adopted. Near the top dead center of the compression stroke, diesel oil is injected into the cylinder at high pressure, directly forming mixed gas in the cylinder, igniting and burning, and doing work to the outside.

First, the role of diesel engine fuel system

A certain amount of clean diesel oil is pressurized at an appropriate time and then injected into the combustion chamber at an appropriate law. The fuel injection timing and quantity of each cylinder are the same, which is suitable for the working conditions of diesel engine. Injection pressure, atomization quality and their distribution in the combustion chamber are suitable for the type of combustion chamber.

1. A certain amount of clean diesel oil is pressurized at an appropriate time and then injected into the combustion chamber at an appropriate law. The fuel injection timing and quantity of each cylinder are the same, which is suitable for the working conditions of diesel engine. Injection pressure, atomization quality and their distribution in the combustion chamber are suitable for the type of combustion chamber.

2. In each working cycle, each cylinder is injected with oil once, and the oil injection sequence is consistent with the working sequence of the cylinders.

3. Automatically adjust the circulating oil supply according to the change of diesel engine load to ensure the stable operation of diesel engine, especially to stabilize idle speed and limit overspeed.

4. Store a certain amount of diesel to ensure the maximum driving range of the car.