Description
Product Overview
The fuel injector is assembled at the front end of the small mechanical fuel injector. Under high pressure, the fuel pushes the internal needle valve to open, and through the single-point micro-hole on the end face, a concentrated and fine oil mist is formed, completing the fuel injection work for the cylinder. Under long-term field conditions of light load, outdoor high and low temperatures, and diesel with impurities, the injector holes may get clogged, the sealing surface of the needle valve may wear, and the sealing gap may expand. This will result in uneven atomization, engine shutdown dripping oil, weak power of a single cylinder, slow engine startup, excessive black smoke, and increased fuel consumption. This product is an integrated small precision fuel injector that is factory-tested for high-pressure holding and flow balance. The size specifications are uniform, and disassembly and assembly do not require grinding to fit. It is suitable for maintenance of small agricultural equipment, small diesel generators, and light-duty diesel mechanical fuel injectors for transportation.
Unique Core Advantages of Each Product
Short and straight integrated mirror valve body, without turbulent flow in the oil path
The overall short and straight formed steel body has a mirror finish on the outer wall, and the high-pressure fuel flows smoothly without vortex loss, resulting in stable injection pressure and consistent atomization effect under low-speed conditions of small-displacement engines.
End face single-point micro-hole mirror injection port, suitable for small-displacement models
The center single-hole of the end face is a precise micro-hole with no burrs on the wall, and the fuel injection is concentrated and fine, suitable for small cylinder combustion chambers, ensuring adequate oil-gas mixture, reducing carbon buildup, and lowering black smoke and fuel consumption.
Integrated top limit flange platform, with a tightly sealed assembly and positioning
The upper end of the valve body is widened with a limit step, which precisely fits the small fuel injector housing during assembly. After being paired with a sealing copper pad, it completely blocks the leakage of high-pressure fuel, stabilizing the fuel injection pressure of low-displacement models and avoiding insufficient pressure during depressurization.
The outer wall is permanently engraved with the part number for easy inventory verification and to prevent misplacement
The side wall of the flange is etched with the DN0PD628 model code, resistant to diesel soaking, wiping wear, and facilitating repair inventory, matching parts, and clear identification, reducing the cost of rework due to confusion in small parts model numbers.
Overall nitrided hardened alloy steel, wear-resistant and suitable for light-load harsh conditions
The entire fuel injector is processed by high-hardness alloy steel, with surface nitrided hardening treatment. The sealing surfaces of the needle valve and valve seat are wear-resistant and scratch-resistant, ensuring a longer service life in fields, outdoor environments with alternating cold and hot temperatures, and single-cylinder / small multi-cylinder mechanical diesel engine fuel injectors. It reduces the frequency of frequent disassembly and replacement of small equipment.
Application Scenarios
Suitable for small tractors with direct injection fuel supply systems, small diesel generators, light-duty agricultural spraying machinery, single-cylinder small diesel power equipment, and for large-scale maintenance of outdoor small mechanical diesel engine fuel injectors at normal temperatures and high temperatures.
Product Basic Parameters
Product Name: Mechanical Direct Injection Fuel Injector Assembly
Part Number: DN0PD628
Main Material: Overall nitrided hardened alloy steel
Structural Feature: Short and straight integrated valve body, end face single-point micro-hole injection end, top limit flange platform, outer wall engraved with model number
Application Conditions: Continuous light-load operation, engine compartment alternating cold and hot temperatures, single-cylinder / small multi-cylinder mechanical diesel engine fuel injectors in outdoor dusty environments
Product Status: New precision fuel injector, factory-tested for atomization effect, high-pressure sealing, and fuel injection opening pressure calibration and detection
Packaging: Each product is separately packaged in a transparent hard protective tube, with plastic plugs at both ends for protection against transportation impacts and scratches on the end micro-holes, supporting single-piece, multi-box, and bulk purchase in cartons, and suitable for cross-border small package logistics
