Description
Product Overview
The fuel injector is assembled at the front end of the high-power construction machinery electronic fuel injector. The high-pressure fuel flows through the internal precision needle valve and is cut by multiple groups of micro holes at the front end to form a large volume of uniform oil mist. The electronic control unit precisely regulates the injection timing and the fuel injection volume. Under the long-term mining conditions of 24-hour full-load, high-temperature, and impure diesel continuous erosion, the injection holes may get clogged, the sealing surface of the needle valve may wear, and the clearance between the mating parts may increase. This may lead to failure of atomization, equipment shutdown with dripping oil, uneven power output of each cylinder, insufficient climbing power of the equipment, excessive black smoke emissions, and significant increase in fuel consumption. This product is an integrated high-flow precision fuel injector that has undergone ultra-high pressure and balanced flow detection at the factory. The installation dimensions are standardized, and disassembly and assembly do not require grinding to fit. It is suitable for the maintenance of excavators, loaders, and heavy-duty diesel engine units of mining machinery with common rail fuel injectors.
Unique Core Advantages of the Single Product
Conical integrated streamlined housing, no pressure relief for high-flow fuel supply
The overall conical streamlined integrated structure has a smooth inner wall without vortex dead corners, suitable for the large fuel injection volume requirements of high-power models. The high-pressure fuel flows smoothly, maintaining stable common rail oil pressure throughout the process. Heavy-duty operations do not cause power loss.
Precision positioning guide shaft at the rear end, no eccentric wear when assembled coaxially
The short cylindrical positioning guide shaft at the rear end has a mirror-finish polished outer wall. After being installed in the fuel injector housing, it precisely limits the position, and the reciprocating motion has no unilateral inclination wear. It maintains a micrometer-level sealing gap between the needle valve and the valve seat for a long time, preventing internal leakage of high-pressure fuel.
Multi-micro-hole mirror-faced injection end face at the front end, full atomization and combustion of large flow
The multiple symmetrical fine spray holes at the front end have smooth and free-of-bumps mirror-polished inner walls. The large-flow fuel can be uniformly cut into fine oil mist, matching the high-power combustion chamber, achieving sufficient oil-gas mixture, reducing carbon buildup, lowering black smoke emissions, and improving fuel utilization.
Overall nitrided hardened alloy steel, resistant to high pressure and impurity wear
The entire fuel injector is made of high-hardness alloy steel and undergoes surface nitriding hardening treatment. The sealing surface of the needle valve is resistant to high-pressure impact and impurity scratches. It has a longer service life in harsh conditions such as mining sites and construction sites with high dust, reducing the frequency of equipment shutdown and maintenance.
Standardized shape positioning, convenient maintenance and disassembly
The housing is reserved for an adapter clamping position. The maintenance and disassembly tools can stably clamp it, without squeezing and damaging the positioning shaft and front injection holes, reducing the probability of damage to the accessories during the maintenance process. Applicable scenarios
This product is suitable for large-scale mining excavators with high-pressure common rail fuel supply systems, heavy-duty wheel loaders, and fixed power diesel generators in mines. It is applicable for the overhaul of diesel engine fuel injectors of heavy-duty construction machinery in mining areas, including 24-hour continuous full-load operation, prolonged high-temperature in the engine compartment, and high-pollution dust conditions.
Product Basic Parameters
Product Name: Heavy-duty Construction Machinery Common Rail Fuel Injector Assembly
Part Number: R5234785
Main Material: Integral Nitrided Hardened Alloy Steel
Structural Feature: Conical一体 flow guide housing， rear end positioning guide shaft， front end multi-hole spray surface
Application Conditions： 24-hour continuous full-load operation， long-term high-temperature in the engine compartment， high-pollution dust environment for high-power electronically controlled common rail diesel engines
Product Status： New precision fuel injector， factory completed with full calibration and testing for atomization effect， high-pressure sealing， and large-flow spraying
Packaging： Each unit is separately packaged in a transparent hard protective tube， with plastic plugs at both ends for protection， preventing the guide shaft and front micro-holes from being damaged during transportation. Supports single-piece， multi-box， and bulk purchase in cartons， and is compatible with cross-border small package / full-box logistics.
