Description
Product Overview
The electronically controlled common rail injector receives signals from the vehicle's electronic control unit to precisely control the amount, duration, and atomization pattern of high-pressure fuel injection. It is the core executive component of the fuel supply system for heavy-duty diesel engines. Under long-term mining conditions of 24-hour continuous heavy load, continuous high-temperature vibration in the engine compartment, and impurities from diesel washing, internal needle valve sealing areas may suffer carbon wear, sealing rubber rings may age and harden, and electromagnetic coils may have delayed responses. This can lead to single-cylinder fuel supply imbalance, power loss, repeated starting of the cold engine, excessive exhaust pollutants, and fuel leakage from the installation position. This product has standardized installation outer diameter, sealing dimensions, electronic control signal parameters, and return oil thread specifications. Maintenance can be carried out by directly replacing the injector as a whole, eliminating the cumbersome process of disassembling and replacing internal components. It is suitable for large mining excavators, heavy-duty loaders, long-distance trucks, and large-power diesel generator sets for the maintenance and repair of electronically controlled common rail diesel engines.
Core Advantages of the Single Product
Segmented composite alloy steel forged housing, resistant to pressure, wear, and high-temperature deformation
The entire segmented forged alloy steel is integrated into one piece, with a surface treated for corrosion resistance and hardening, capable of enduring thousands of bar of high-pressure fuel impact, withstanding long-term high-temperature, vibration in the engine compartment, and not prone to rusting or deformation, providing long-term protection for the internal electromagnetic and needle valve precision components.
Tail multi-pin waterproof electromagnetic plug, stable signal transmission and anti-interference
The black multi-pin insulated sealed connector at the tail, with a built-in dustproof and waterproof rubber gasket, isolates engine compartment oil, water vapor, and dust, preventing short circuits in the wiring, loss of fuel injection signals, smooth and unobstructed operation of the electromagnetic valve, and no delay in the injection response.
Side-mounted standard return oil thread interface, allowing excess fuel to quickly flow back and relieve pressure
The independent rolled screw return oil port on the side, paired with a matching dust-proof plug, allows excess high-pressure fuel to quickly flow back to the fuel tank, stabilizing the common rail pipeline oil pressure, and eliminating problems such as sudden drop in rail pressure during heavy-load climbing and power surges.
Integrated green fluorine rubber seal ring in the middle section, completely preventing leakage at the cylinder head installation
The middle section of the cylinder body is pre-installed with a thickened green oil-resistant sealing O-ring, which fits tightly to the cylinder head installation hole after assembly, providing double barriers against high-pressure fuel leakage and hot gas backflow, and eliminating cylinder head leakage and intake air leakage faults.
Front-end micro-hole precision atomization nozzle, fine fuel atomization for complete combustion
The multi-micro-hole precision atomization structure at the front end, crushing high-pressure fuel into uniform and fine oil droplets, matching the large-volume combustion chamber of heavy-duty engines, reducing carbon accumulation in the cylinder and lowering fuel consumption and exhaust black smoke emissions.
Uniformly calibrated flow rate for the entire machine at the factory, allowing quick restoration of stable power during installation
Each injector is independently tested on the machine for full-range fuel injection volume, atomization effect, and high-pressure sealing performance. Parameters from the same batch are highly consistent, and after replacement, idle speed is stable, acceleration is linear, significantly reducing the maintenance and debugging time for heavy equipment. List of Accessories
4307475 Complete electronic control common rail injector body 1 piece
Pre-installed middle green oil-resistant sealing O-ring
Front nozzle transparent plastic dust-proof protective cover 1 piece
Side-mounted oil return port plastic dust-proof plug 1 piece Applicable scenarios
This product is suitable for large mining excavators with high-pressure common rail fuel supply system, heavy-duty wheeled loaders, long-distance heavy-duty freight trucks, and high-power fixed diesel generators. It is applicable for 24-hour continuous heavy-duty operations in mines, long-distance trunk transportation, hot and dusty environments at construction sites, and heavy-duty electric control common rail diesel engines in corrosive environments with impurities in diesel fuel.
Product Basic Parameters
Product Name: 4307475 Heavy-duty Electric Control Common Rail Injector Assembly
Part Number: 4307475
Main Material: Segmented forged alloy steel housing, waterproof multi-pin electromagnetic plug, green fluorine rubber sealing ring, hard alloy atomizing nozzle, plastic dust-proof protective cover
Structural Feature: L-shaped segmented metal body, tail multi-pin electric control plug, side-mounted return oil threaded interface, middle green sealing ring, front end transparent dust-proof nozzle cover
Application Conditions: Ultra-high pressure fuel electric control injection, engine compartment alternating hot and cold continuous vibration, heavy-duty electric control common rail diesel engine corrosion by impurities in diesel fuel
Product Status: New and complete injector assembly, factory completed with all sets of bench tests for atomization accuracy, oil circuit sealingity, and electromagnetic opening and closing response
Packaging: Single-piece independent thickened hard pipe protection packaging, nozzle, electric control plug, return oil port all equipped with dust-proof plugs, foam buffer protection to avoid transportation the precision working surfaces and threaded parts， supports single-piece retail， bulk purchase in boxes， and is compatible with cross-border large-scale logistics.
