Description
Product Overview
The mechanical fuel injector relies on the oil pump to deliver high-pressure fuel to open the internal needle valve, achieving atomized injection and stable control of the fuel injection volume for a single cylinder. Under long-term mining heavy-load, high-temperature engine compartment, and diesel contamination erosion conditions, the needle valve sealing surface wears out, the sealing components age and harden, resulting in fuel leakage, coarse atomization, imbalance in fuel supply for each cylinder, power loss, and diesel seeping into the engine oil to dilute the lubricating oil. This product has standardized specifications for fuel injection pressure, stroke, and sealing dimensions. Overall replacement for maintenance can restore the equipment's power, and it is suitable for the maintenance of medium and small-sized excavators, loaders, agricultural tractors, and mechanical direct injection diesel engines for small-capacity diesel engines.
Core advantages of this product:
Segmented mirror-hardened alloy steel housing, resistant to pressure, wear, and high-temperature deformation
Gated quenched metal cylinder body, with mirror-finish grinding on the inner and outer walls, continuously withstands the impact of high-pressure fuel, less prone to rust and deformation in alternating hot and cold engine compartment environments, reducing fuel leakage.
Bottom purple copper sealing gasket, long-lasting sealing at the cylinder cover installation position
Front-end matching purple copper flat gasket, with a soft and moderate texture, tightly filling the gap between the cylinder cover and the fuel injector after tightening, preventing the backflow of high-temperature gas in the cylinder and the leakage of diesel outward.
Multiple layers of black fluororubber sealing rings, layer-by-layer blocking oil leakage
Middle section multiple layers of oil-resistant sealing rings, resistant to diesel swelling and high/low temperatures, layer-by-layer sealing the assembly gap of the cylinder body, preventing the leakage of high-pressure fuel and avoiding the dilution of engine oil by diesel.
Hardened alloy multi-micro-hole nozzle, fully atomized to reduce carbon deposits and black smoke
Head with precise micro-hole atomization structure, high-pressure fuel is broken into fine oil mist, matching the combustion chamber for full combustion, reducing carbon accumulation in the cylinder, optimizing exhaust emissions and fuel consumption.
Top transparent dust-proof protection cap, protecting the precise nozzle during transportation and storage
Outlet end equipped with plastic protective cover, isolating dust,磕碰， and scratches on the needle valve sealing surface， avoiding failure of sealing before assembly.
Whole machine factory pressure calibration， no need for secondary adjustment during installation
Independent on-machine detection of opening pressure， atomization effect， and sealing performance of each unit， unified parameters， after replacement， the engine runs smoothly， significantly reducing maintenance and debugging time.
Accessory list
6738-11-3100 Complete mechanical fuel injector body 1 unit
Matching purple copper sealing gasket 1 sheet Applicable scenarios
It is suitable for small and medium-sized mining excavators, wheeled loaders, large and medium-sized agricultural tractors, and fixed diesel generator sets that adopt mechanical direct injection fuel supply systems. It is applicable for continuous operation at construction sites, high-intensity labor in fields, high-temperature vibration in engine compartments, and environments with dust, impurities, and diesel corrosion. It is used for replacing the injection components of diesel engines.
Product Basic Parameters
Product Name: 6738-11-3100 Mechanical Direct Injection Injector Assembly
Part Number: 6738-11-3100
Main Material: Tempered hardened alloy steel housing, tungsten carbide atomizing nozzle, copper sealing gasket, fluororubber sealing ring
Structural Feature: Segmented stepped metal cylinder body, copper sealing gasket at the bottom, multiple layers of black sealing rings in the middle, dust protection cap at the top
Application Conditions: Medium-high pressure direct injection, high-temperature vibration in engine compartments, impurity diesel corrosion of direct injection diesel engines
Product Status: New and complete injector assembly, factory completed with all sets of bench tests for atomization accuracy, high-pressure sealingity, and opening pressure
Packaging: Single independent hard tube packaging, both ends with dust protection to isolate磕碰 damage to the precise working surface of the nozzle， suitable for single-piece retail， bulk purchase in cases， and cross-border small package logistics compatibility.
