The automotive diesel injector on a vehicle is used to realize accurate injection of diesel and ensure efficient combustion in the engine. The key to smooth operation of the injector lies in proper control of timing, quantity, and method of fuel injection.

Working principle of a diesel injector:

High pressure fuel supply: Diesel is first pressurized to a very high pressure level with the aid of a fuel pump, thus forming a high-pressure fuel source for the fuel injection system and the injector.

Electrically controlled activation: A modern diesel fuel injector is typically activated by electronic control signals sent by an engine control unit (ECU). When the set injection time is reached, the control solenoid valve or electric control device is activated.

Opening/closing fuel injection path: The solenoid valve or needle valve inside the fuel injector rises or falls in response to an electrical signal, thus opening the fuel injection hole or needle to allow high-pressure diesel to be injected at high speed via the nozzle.

Atomization injection: The special design of the nozzle generates fine mist of diesel, which increases the mixing area with air and facilitates full and uniform combustion.

Fuel injection time control: The injector starts to inject fuel at a specific time point (at an injection advance angle) and adjusts the fuel injection quantity and pressure according to the engine operating conditions to optimize combustion efficiency, power output, and emission performance.

End of fuel injection: When the fuel injection control signal stops, the fuel injection needle closes, the fuel injection stops, and the pressure in the air chamber is maintained to get ready for the next fuel injection cycle.

Advantages of vika diesel injector:

The cleanliness of the components of vika diesel injector can reach Grade AA.

Ultra precision machining leads to better atomization effect.

The gasket parallelism is 1u, and the grading accuracy is 0.002 mm, both better than those of aftermarket products.

The return fuel volume of vika diesel injector is 30% smaller than original products, leading to higher engine efficiency.