Description
Product Overview
The XPI high-pressure common rail injector precisely controls the fuel flow and injection timing through internal control valves. After long-term exposure to extremely high oil pressure, wear from diesel impurities, and aging at high temperatures, the valve core sealing surface may become worn, the sealing ring may harden, and the steel balls may not seal properly, resulting in fuel leakage, continuous drop in the rail pressure, abnormal fuel injection in a single cylinder, insufficient power, severe idling vibration, slow cold start, and excessive black smoke emissions from the exhaust. This complete control valve maintenance kit includes all the worn parts inside the valve body, eliminating the need to purchase individual small parts separately. The kit is fully compatible with the XPI injector valve body installation position and can be replaced with the complete set of control valve components during maintenance to restore the original factory injection performance of the injector. It is suitable for heavy-duty trucks and large mining construction machinery with XPI diesel injection systems.
Core advantages of the single-item package
High-precision integrated metal control valve valve core, with synchronous and stable opening and closing response
The valve core is made of quenched alloy steel through integral grinding and is mirror-polished on the sealing surface. It can withstand over 1000 bar of ultra-high oil pressure, has no wear or jamming during high-frequency reciprocating motion, precisely executes pre-injection and main injection instructions, ensures uniform fuel injection flow for each cylinder, and eliminates intermittent cylinder failure and power fluctuations.
High-pressure fluorosilicone O-ring for sealing, preventing internal fuel leakage
The matching large-sized ring-shaped sealing gasket is made of fluorosilicone material, which is resistant to diesel corrosion and high temperatures, and is suitable for the high-pressure sealing position of the valve body. It is not prone to hardening or cracking under long-term cabin high-temperature conditions, completely solving the problem of fuel pressure leakage inside the valve body, and stabilizing the common rail system oil pressure.
Multi-layer positioning transparent plastic bushings, precise assembly and anti-bump
The kit is equipped with multiple specifications of positioning bushings, which can precisely limit the valve core during assembly to avoid scratching the precise sealing surface of the valve core during the disassembly process; at the same time, it provides buffering and protective functions during transportation, protecting the high-precision valve core from damage due to bumps.
Matching miniature sealing steel balls to achieve zero-leakage sealing of the valve body
It contains a dedicated sealing steel ball that precisely fits the valve core and valve seat, blocking fuel backflow leakage, ensuring complete oil cut-off when the injector is closed, and eliminating problems of dripping oil during shutdown and poor atomization.
Independent plastic compartment packaging, preventing accessories from being lost easily
The entire set of accessories is packaged in transparent compartmentalized plastic packaging. The valve core, sealing ring, bushing, and steel ball are fixed in separate slots, ensuring that the components will not scatter or get mixed up during storage, cross-border transportation, and will be easy to take out during maintenance, avoiding damage to the precision sealing surface of the valve core.
All components are matched with the XPI valve body structure, completing the internal major repair in one step
All accessory sizes are customized and matched for the XPI series injector valve body. With this kit, you can complete the complete disassembly and replacement of the control valve for a single injector in one step, eliminating the cumbersome process of separately purchasing valve cores, sealing components, and bushings, and improving the maintenance store's maintenance and inventory preparation efficiency.
Kit accessory details
High-precision metal control valve valve core assembly 1 piece
Large-sized high-pressure oil-resistant O-ring 1 piece
Multiple specifications positioning plastic bushings 2 pieces
Miniature sealing steel ball accessories 1 piece
Transparent compartmentalized plastic packaging Applicable scenarios
It is suitable for heavy-duty long-distance freight trucks, large mining excavators, heavy-duty loaders, high-power diesel generators equipped with XPI high-pressure common rail fuel supply system. It is applicable for the major overhaul and replacement of XPI electronic fuel injection valve bodies in 24-hour continuous full-load, long-term high-temperature, and high-pollution diesel environments.
Product Basic Parameters
Product Name: XPI Fuel Injector Control Valve Maintenance Kit
Compatible Series: XPI Common Rail Injector
Valve Core Material: Tempered and hardened alloy steel
Sealing Material: High-temperature resistant and oil-resistant fluororubber
O-ring Material: High-strength oil-resistant engineering plastic
Application Conditions: Ultra-high oil pressure impact, continuous high-frequency injection, high-temperature vibration heavy-duty electronically controlled diesel engine fuel injector internal valve body maintenance
Product Status: New complete set of control valve components, factory completed with high-pressure sealingity, opening and closing response, and flow balance full calibration and testing
Packaging: Independent transparent compartmentalized plastic packaging, dust-proof and impact-resistant, supports single-piece assembly, multi-set bulk purchase, and is compatible with cross-border small package / full-box logistics
