Description
Product Overview
The electronically controlled common rail injector receives signals from the electronic control unit and precisely controls the timing, amount and atomization effect of high-pressure fuel injection. It is the core executive component of the heavy-duty common rail fuel supply system. Under long-term 24-hour continuous heavy-duty operation, continuous high-pressure fuel flushing at over 1000 bar, impurities from diesel fuel wear, and working conditions of high-temperature vibration in the engine compartment, the internal needle valve sealing surface may wear, the electromagnetic valve may have response lag, and the sealing components may age and fail. This may result in single-cylinder fuel supply imbalance, weak acceleration, rapid pressure relief in the oil circuit after engine shutdown, the need for multiple ignitions to start the engine, and diesel leakage into the engine oil to dilute the lubricating oil. This product has unified standardization of injection opening pressure, stroke, and electronic control parameters. Maintenance can be carried out by directly replacing the entire unit without the need for secondary calibration with professional equipment. It is suitable for the maintenance of large excavators, wheel loaders, and heavy-duty generator sets equipped with electronically controlled common rail diesel engines.
Core advantages of this product:
Multi-level mirror-hardened alloy steel housing, resistant to high-pressure wear and deformation
Gated quenching metal cylinder body, micro-micron-level mirror finish grinding on the inner and outer walls, able to withstand long-term ultra-high oil pressure impact, not prone to rust and deformation under alternating cold and hot conditions, significantly reducing the probability of high-pressure fuel leakage internally.
Standard hexagonal clamping platform in the middle section, allowing for non-destructive valve body assembly
Integrated hexagonal positioning structure, compatible with standard wrench clamping for disassembly and assembly, evenly distributed force, without squeezing the internal precision valve core and electromagnetic components, avoiding valve body deformation and thread slippage damage.
Transparent and dust-proof protective sleeves at both ends, providing full protection for the precision components
Plastic protective covers for the electronic control connector end and the nozzle oil outlet end, isolating dust and impact during storage and transportation, preventing scratches and damage to the needle valve and electrical terminals before assembly, reducing the probability of faults after assembly.
Purple copper sealing gaskets at the front end, cylinder head sealing for long-term leak prevention
A thickened purple copper flat gasket is provided at the nozzle, with a soft and hard texture that tightly fills the gap between the injector and the cylinder head after tightening, providing dual barriers against the backflow of high-temperature gas in the cylinder and the outward leakage of high-pressure fuel.
Multiple micro-hole hard alloy nozzles, with fine and thorough atomization for complete combustion
The precise micro-hole atomization structure at the head end, crushing high-pressure fuel into uniform and fine oil droplets, matching the large displacement combustion chamber of heavy-duty engines for complete combustion, reducing carbon buildup in the cylinder, lowering black smoke emissions and fuel consumption.
The entire machine is uniformly calibrated on the test bench before leaving the factory, allowing for quick restoration of power after installation
Each injector is independently tested for fuel supply flow, opening pressure, and uniformity of atomization, with highly unified parameters for the same batch of products. After replacement, the idle speed is stable, the acceleration is linear, significantly reducing maintenance and debugging time.
Component list:
6746-11-3100 Complete electronically controlled common rail injector body 1 unit
Matching purple copper sealing gasket 1 sheet Applicable scenarios
This product is suitable for large-scale mining excavators with high-pressure common rail fuel supply system, heavy-duty wheeled loaders, fixed high-power diesel generators. It is applicable for 24-hour continuous heavy-duty operations in mines, hot and dusty environments at construction sites, long-distance engineering transportation, and replacement of heavy-duty electronic control common rail diesel engine injection components under alternating cold and hot conditions and vibration corrosion.
Product Basic Parameters
Product Name: 6746-11-3100 Electronic Control Common Rail Injector Assembly
Part Number: 6746-11-3100
Main Material: Tempered hardened alloy steel housing, tungsten carbide atomizing nozzle, high-temperature resistant electromagnetic coil, copper sealing gasket, plastic dust-proof protective sleeve
Structural Feature: Segmented stepped metal injector body, middle section hexagonal disassembly and clamping position, both ends transparent dust-proof sleeve, front end copper sealing gasket, outer wall engraved part code
Application Conditions: Ultra-high oil pressure reciprocating injection, cabin continuous high-temperature vibration, impure diesel corrosion heavy-duty electronic control common rail diesel engine
Product Status: New and complete injector assembly, factory completed with all sets of bench tests for atomization accuracy, high-pressure sealingity, and electromagnetic opening and closing response
Packaging: Single independent shock-proof hard tube packaging, both ends protective sleeve fully encloses, foam buffer protection to avoid transportation impact and scratch of nozzle and electronic control terminals. Supports single-piece retail, bulk purchase in cases, and is compatible with cross-border small items and case logistics.
