Description
Product Overview
The mechanical fuel injector relies on the oil pump to deliver high-pressure fuel to open the internal needle valve. It then atomizes the fuel through the front nozzle and completes the combustion in the cylinder. Under long-term working conditions such as mining areas and construction sites with 24-hour high-temperature and heavy-load operations, along with the erosion of impure diesel, the needle valve sealing surface may wear, the sealing gasket may leak, and the nozzle may get clogged. This can result in poor fuel atomization, fuel dripping, imbalance in multi-cylinder power, and black smoke emission from the engine. This complete integrated mechanical fuel injector is factory-tested for high-pressure sealing and uniform fuel atomization. Its installation dimensions and thread specifications are standardized, making it suitable for heavy-duty trucks, six-cylinder construction machinery, large-power agricultural generator sets, and direct fuel injection systems of large diesel engines for heavy-duty vehicles. It is suitable for major overhauls of diesel engine fuel injection systems in mining areas and construction sites with 24-hour full-load operations and high-temperature, high-dust conditions.
Unique core advantages of this product
The overall thickened steel valve body with a black powder-coated anti-corrosion layer prevents rust, withstands pressure, and does not leak oil.
The entire seamless steel pipe is formed as a whole, with the outer wall treated by oil-resistant anti-corrosion powder coating, which resists the corrosion of engine compartment moisture and diesel. It can withstand high-pressure fuel impact for a long time without deforming or cracking, ensuring stable fuel injection pressure output.
The integrated hexagonal locking end at the rear end is convenient for disassembly, adjustment, and pressure regulation.
The large-sized hexagonal locking structure at the rear end is compatible with standard socket wrenches for disassembly and installation, allowing for precise adjustment of the fuel injection opening pressure during maintenance without the need for additional adapter tools, reducing the time required for oil pump calibration.
The precise oil return drainage holes on the side of the valve body ensure smooth response of oil pressure return.
Standard oil return holes are set in the middle section, allowing excess fuel to smoothly return to the fuel tank. The oil pressure does not experience instantaneous fluctuations under different load conditions, ensuring balanced fuel injection pressure for each cylinder. Idle operation is smoother, and acceleration jolts are eliminated.
The standard copper pad installation position at the front end is reserved for the installation of sealing gaskets, and it is securely attached to the cylinder head installation hole after being combined with a flat washer. Multiple layers of barriers prevent high-pressure fuel from leaking through the assembly gap, ensuring stable fuel injection pressure and reducing pressure loss.
A transparent dust-proof protective cover at the front end protects the precise nozzle holes. It is stored and transported in a dust-free environment, protecting the fine nozzle holes from dust, sand, and minor impacts. The product can be assembled without cleaning upon arrival, avoiding the clogging of impurities that causes poor fuel atomization.
Application scenarios
Suitable for six-cylinder heavy-duty freight trucks, large mining excavators, heavy-duty wheeled loaders, and large-power stationary diesel generator sets equipped with mechanical direct fuel injection systems. It is applicable for major overhauls of diesel engine fuel injection systems in mining areas and construction sites with 24-hour full-load operations and high-temperature, high-dust conditions.
Product basic parameters
Product name: Mechanical Direct Injection Injector Assembly
Part number: 612630090022
Main material: Thickened seamless steel valve body, high-temperature alloy internal spring, oil-resistant anti-corrosion powder coating, copper sealing gasket, hard plastic dust-proof cover
Structural features: Black powder-coated integrated valve body, rear end hexagonal locking end, side oil return drainage holes, front end sealing gasket installation step, transparent needle valve dust-proof tube protection
Application conditions: 24-hour continuous full-load operation, long-term high-temperature in the engine compartment, outdoor heavy-duty mechanical diesel engines
Product status: New complete fuel injector assembly, factory-tested for fuel injection opening pressure, high-pressure sealing, and uniform fuel atomization
Packaging: Thick shock-absorbing independent cardboard box, with a dust-proof cover installed at the fuel injection end to isolate transportation impacts and scratches on the precise nozzle holes. Supports single-piece, multi-box bulk purchasing, and is compatible with cross-border small package / full-box logistics.
