Description
Product Overview
The fuel injector is assembled at the front end of the mechanical fuel injector. Under high pressure, the fuel pushes the internal needle valve to open, and through the front micro-hole, it forms a fine oil mist, completing the fuel injection work for the cylinder. Under long-term conditions such as high-temperature and heavy-load farming, construction sites, and diesel fuel contaminated with impurities, the injector holes may get clogged, the needle valve sealing surface may wear out, and the sealing gap may expand. This will result in uneven atomization, engine shutdown dripping oil, imbalance in power output of each cylinder, weak engine acceleration, excessive black smoke emissions, and a significant increase in fuel consumption. This product is an integrated precision fuel injector that undergoes high-pressure holding and full-condition flow balance testing upon leaving the factory. Its size specifications are standardized, and disassembly and assembly do not require grinding for adaptation. It is suitable for maintenance and repair of fuel injectors for agricultural machinery, light trucks, small-scale construction machinery, and other diesel engines.
Unique Core Advantages of Each Product
Three-stage stepped elongated guide rod, concentric reciprocating without unilateral wear
The rod body adopts a three-stage circular arc smooth step transition, with the outer wall polished to a mirror finish. It guides the fuel in the internal cavity of the fuel injector stably, without tilting unilateral wear. It maintains a micrometer-level sealing gap between the needle valve and the valve seat for a long time, preventing high-pressure fuel leakage and pressure loss, and stabilizing the fuel injection output pressure.
Conical sharp tip flow and atomization end, fully mixes oil and gas and saves fuel
The conical gradual flow structure guides the fuel to spread evenly. The inner wall of the front micro-hole has a smooth mirror finish without burrs. The fuel is cut into concentrated fine oil mist, and the combustion of the mixture in the cylinder is more sufficient, reducing the accumulation of carbon deposits in the cylinder and lowering black smoke emissions and fuel consumption.
Top integrated widened limit flange, secure assembly and sealing
The upper end of the valve body is widened with a limit step, which precisely fits the installation position of the fuel injector shell during assembly. Combined with a sealing copper pad, multiple layers of barriers prevent high-pressure fuel leakage and avoid pressure loss, ensuring the fuel injection pressure is stable throughout the process.
The outer wall is permanently engraved with the part number, making it easy to verify inventory without misplacing parts.
The side wall of the flange is etched with the DLLA160P610 model code, resistant to diesel soaking, wiping wear, and facilitating repair inventory, component matching, and intuitive clarity, reducing the cost of rework due to model confusion.
Overall nitrided hardened alloy steel, wear-resistant and suitable for harsh conditions
The entire fuel injector is processed with 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. It has a longer service life in agricultural and construction sites with high dust and impurity diesel, reducing the frequency of disassembly and replacement.
Application Scenarios
Suitable for agricultural tractors with mechanical direct injection fuel supply systems, light-duty diesel trucks, small wheeled loaders, fixed diesel generator sets, and diesel engine fuel injectors of small-scale mechanical diesel engines used for field operations, light-load construction sites, and outdoor environments with high temperatures, low temperatures, and high dust. Suitable for major overhauls of fuel injectors for diesel engines in these scenarios.
Product Basic Parameters
Product Name: Mechanical Direct Injection Fuel Injector Assembly
Part Number: DLLA160P610
Main Material: Overall nitrided hardened alloy steel
Structural Features: Three-stage stepped elongated guide rod, conical sharp tip atomization end, top widened limit flange, outer wall engraved with model number
Application Conditions: Continuous light to heavy loads, engine compartment alternating cold and hot temperatures, outdoor high-dust small-scale mechanical diesel engine fuel injectors
Product Status: New precision fuel injector, factory completed with full calibration and testing of atomization effect, high-pressure sealing, and fuel injection opening pressure
Packaging: Each product is separately packaged in a transparent hard protective tube, with plastic plugs at both ends for protection against磕碰划伤 the front micro-holes during transportation. Supports single-piece， multi-box， and bulk purchase in cartons， suitable for cross-border small package logistics.
