Structure and Working Principle:
The fuel injection valve is usually installed near the intake end of the main engine or the rotor compression chamber, and is composed of a valve body, valve core, spring, and nozzle, etc. Its working process is as follows:
Under the pressure of the oil pump, the lubricating oil enters the fuel injection valve;
The valve core controls the opening degree according to the system pressure or flow demand, regulating the fuel injection volume;
The lubricating oil is atomized or directedly sprayed through the specially designed nozzle onto the key parts such as the rotor meshing surface and bearings, forming an oil film seal and removing the heat generated by compression.
Precise fuel injection control can ensure the provision of an appropriate amount of lubricating oil under different working conditions (such as loading, unloading, starting), avoiding increased energy consumption due to excessive oil volume or dry friction caused by insufficient oil volume.
Core advantages of original assembly parts:
The original fuel injection valve is designed for the air compressor main engine and has the following characteristics:
Precise flow control: The cooperation accuracy between the valve core and the valve seat reaches the micron level, ensuring that the fuel injection volume matches the main engine speed and load, meeting the requirements of different working conditions;
High pressure and high temperature resistance: The valve body is made of high-strength alloy materials, capable of withstanding 10-20 bar of engine oil pressure and a working temperature of 100℃ or above, resistant to corrosion and aging;
Optimized spray angle: The spray direction and atomization effect of the nozzle have been specially designed to ensure that the lubricating oil evenly covers the rotor surface, improving sealing and cooling efficiency;
Compatible with the system: The interface size and installation position are completely matched with the main engine, ensuring stable oil circuit pressure and no leakage risk.
Key points for model matching:
The specifications of the fuel injection valve are closely related to the model, displacement, and lubrication system design of the air compressor. Different series (such as GA, G, ZR, etc.) and power models have significant differences in fuel injection valve models. When purchasing, please provide:
The specific model of the air compressor (such as GA15, GA37VSD+), and the factory serial number;
The model of the main engine or the part number of the old fuel injection valve (usually marked on the valve body);
The installation position of the fuel injection valve (for single-valve or multi-valve designed models, it is necessary to distinguish).
