Description
Product Overview
The integrated nozzle is assembled at the very front of the electronically controlled fuel injector, cooperating with the internal control valve core to complete high-pressure fuel injection. It splits the thousands of bar high-pressure fuel into fine oil mist and sprays it into the cylinder to complete combustion and power generation. Under long-term conditions of continuous high-pressure fuel flushing, wear from impurities in diesel particles, high-temperature radiation in the combustion chamber, and continuous vibration of the engine compartment, the front nozzle holes will wear out, and the inner cavity sealing surface will develop scratches. This will result in fuel leakage, coarse atomized particles, rapid loss of track pressure after engine shutdown, and equipment issues such as single-cylinder operation imbalance, weak climbing power, difficulty in starting in low temperatures, and excessive black smoke emissions from exhaust. This product features a unified standard for the outer diameter of the cylinder body, the clearance between the inner cavity, and the specifications of the front nozzle holes. After disassembling the fuel injector, replacing the nozzle alone can repair the failure of fuel injection. It is suitable for large-scale mining excavators, heavy-duty wheeled loaders, and long-distance heavy-duty freight trucks for the maintenance and repair of electronically controlled common rail diesel engines.
Core Advantages of the Single Product
The tempered and hardened alloy steel is integrated as one piece, with high hardness and resistance to high-pressure flushing wear.
The overall steel undergoes high-temperature quenching and hardening treatment, with an integrated cylinder body structure without splicing, a wear-resistant strengthening layer on the surface, and long-term exposure to ultra-high pressure fuel and impurity particles does not easily cause scratches or deformation of the nozzle diameter. It maintains a micro-meter-level precise sealing gap for a long time and prevents internal fuel pressure leakage and seepage.
The multi-stage stepped limit cylinder body, with precise assembly positioning without radial offset
The cylinder body is equipped with multiple stepped limit platforms, precisely positioning and limiting when installing the fuel injector housing, preventing radial shaking and offset during operation, ensuring the entire axial movement of the internal valve core is coaxial, and avoiding single-sided local wear causing needle valve jamming and seal failure.
The spherical sealing nozzle end at the front, with uniform oil mist dispersion for complete combustion
The spherical precision sealing structure at the front, paired with multiple sets of micro-hole spray holes, after high-pressure fuel is sprayed out, it disperses into uniform fine oil mist, fully mixing with the gas, reducing carbon accumulation in the cylinder and lowering exhaust black smoke emissions and fuel consumption.
The outer wall is permanently laser engraved with model codes for quick matching during storage and maintenance
The cylinder body is engraved with P2897551 for multiple identification codes, resistant to long-term exposure to diesel and repeated wiping without fading the characters. During inventory storage and on-site disassembly and assembly, it can quickly distinguish specifications and models, preventing incorrect installation from causing abnormal atomization, unstable track pressure, and other faults.
The inner cavity is fully mirror-milled to a micro-meter level, with smooth and frictionless valve core reciprocating motion without resistance
The inner cavity inner wall is treated with high-precision mirror polishing, without burrs or protrusions, and with extremely small friction resistance for the valve core lifting and lowering. The response of electromagnetic signal drive is instantaneous without delay, eliminating injection lag, idle wobble, and acceleration power jolt problems.
Each nozzle is independently calibrated for atomization flow at the factory, and no manual grinding and polishing is required for installation
Each nozzle is independently tested at the factory for the duration of high-pressure pressure retention, the uniformity of atomization particles, and the standard spray flow rate. The factory performance parameters are unified, directly matching the corresponding fuel injector chamber, eliminating the need for manual grinding and debugging procedures, significantly reducing the disassembly and maintenance time of the fuel injector. List of Accessories
P2897551 Integrated fuel injector assembly part 1 piece, vacuum-sealed and individually packaged Applicable scenarios
It is suitable for large-scale 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 engine fuel injectors with front-end atomization spray core components replacement.
Product Basic Parameters
Product Name: P2897551 Integrated Electronic Control Common Rail Fuel Injector Pair
Part Number: P2897551
Main Material: Tempered hardened alloy steel
Structural Feature: Multi-stage stepped limit cylinder, front spherical sealed spray end, outer wall laser engraved identification code, micron-level mirror surface grinding of sealed inner cavity
Application Conditions: Ultra-high pressure fuel atomization spraying, combustion chamber high-temperature radiation, continuous vibration of engine compartment alternating between cold and hot, heavy-duty electric control common rail diesel engine fuel injector spray component corrosion by impurities
Product Status: New and complete fuel injector pair, factory completed with full calibration and testing of atomization accuracy, high-pressure sealing, and flow matching
Packaging: Independent vacuum-sealed plastic bag packaging, isolated from dust and oil, hard tube protection for cushioning to avoid磕碰划伤 the mirror surface sealing working surface and front spray hole during transportation， supports single unit retail， bulk purchase of entire bag， and is compatible with cross-border small package logistics.
