Description
Product Overview
The valve plate of the control valve is the core of electromagnetic control for the common rail injector. It relies on the planar guide oil passage, steel ball sealing, and electromagnetic armature to precisely respond to the electronic control signal, controlling the start and stop timing of fuel injection and the single-shot fuel injection volume. After long-term high-pressure diesel flushing and wear by impurities, the oil passage becomes clogged and the steel ball sealing fails, resulting in incorrect injection timing, uneven fuel injection volume in each cylinder, decline in engine power, and the popping out of fault codes. This product features an integrated precision valve plate that undergoes flow rate, sealing, and response accuracy testing upon leaving the factory. It does not require additional matching of scattered components and is suitable for maintenance of common rail injectors for heavy trucks, mining excavators, and large construction machinery.
Unique Core Advantages of the Single Product
The integral hardened alloy steel circular valve plate is wear-resistant and resistant to high pressure, and does not deform.
The entire piece of high-hardness alloy steel is precisely ground and processed as a whole, undergoes quenching and hardening treatment, and has a mirror surface polish. It can withstand the high-pressure fuel flushing of the common rail for a long time without being scratched or deformed, and the oil passage size remains stable, avoiding disorder in oil pressure regulation.
Multiple specifications of guide oil holes layout, linear and smooth oil pressure adjustment
The planar distribution of large and small guide oil holes and the central main throttling hole allow for uniform distribution of high-pressure fuel flow, with smooth changes in oil pressure without sudden fluctuations, eliminating acceleration jolts, high-speed and low-speed power imbalance, and more complete combustion, reducing fuel consumption and black smoke emissions.
Double high-precision steel balls + positioning pins, locking oil sealing to prevent internal leakage
The valve plate is pre-installed with two precision micro steel balls and positioning pins. The steel balls and valve seat have high-precision fit and sealing, quickly cutting off the oil circuit and locking the high-pressure fuel, preventing dripping and leakage during shutdown, reducing cylinder carbon deposits; the positioning pins ensure that the assembly alignment does not shift.
Precise micrometer-level oil passage processing, no burrs and easy to avoid clogging and blockage
All oil holes and throttling holes are processed using micro-hole precision grinding technology, with smooth inner walls and no burrs, making it difficult for diesel impurities to adhere and accumulate, significantly reducing the frequency of injector clogging, nozzle blockage, and maintenance, and extending the lifespan of the parts.
Standardized outer diameter and hole positions, direct replacement without grinding
The valve plate's outer diameter, oil hole position, and pin hole size are fully matched with the corresponding injector housing. Installation and disassembly can be directly replaced without any size deviations or assembly skewing requiring rework, shortening maintenance time. Applicable scenarios
It is suitable for heavy-duty freight trucks with electronic control common rail systems, large mining excavators, heavy-duty loaders, high-power diesel generators, and is applicable to heavy-duty diesel equipment in mining areas and construction sites for 24-hour full-load operation under high temperature and high dust conditions. It is suitable for major overhaul of the fuel injection system of such diesel equipment.
Product Basic Parameters
Product Name: Common Rail Injector Control Valve Plate Assembly
Part Number: 7206-0379
Main Material: Overall quenched high-precision alloy steel, high-precision bearing steel, sealed steel balls
Structural Feature: Circular multi-flow channel oil holes valve plate, central main throttle hole, double sealed steel balls, positioning pin limit structure
Application Conditions: 24-hour continuous full-load operation, long-term high-temperature in engine compartment, outdoor high-dust heavy-duty electronically controlled common rail diesel engine fuel injector
Product Status: New precision valve plate, factory completed with flow accuracy, high-pressure internal leakage sealingity, electromagnetic response matching complete set of detection
Packaging: Independent transparent protective tube packaging, isolating transportation impact and scratch of the precision oil channels and steel balls, supporting single-piece and multi-set batch purchases, suitable for cross-border small package logistics.
