Description
Product Overview
1278216 Mechanical Injector is the core component of large-displacement diesel equipment without electronic control injection. It opens the needle valve by compressing the spring based on the oil pump supply pressure to complete the fuel injection. After long-term heavy-duty operation, the sealing surface of the needle valve gets worn and the spring becomes fatigued and weak, resulting in insufficient injection pressure, dripping fuel combustion, and power loss. The entire integrated injector does not require disassembling the components and can restore the standard injection pressure and atomization effect by replacing the entire machine. It is suitable for large mining equipment, heavy-duty loaders, and maintenance and replacement of generator sets.
Unique Core Features of the Single Product
Thickened external heavy-duty pressure spring for stable injection pressure
Matched with a large-diameter high-strength spiral pressure spring, it has strong anti-fatigue deformation ability. It is not easy to deform or weaken under long-term continuous high-pressure impact, precisely maintaining the rated opening oil pressure, ensuring consistent injection pressure of each cylinder, and eliminating engine vibration and force interruption during operation.
Integrated metal regulating rocker shaft for adjustable injection pressure to adapt to various working conditions
Integrated positioning regulating lever structure on the valve body side, allowing for fine adjustment of the spring preload during maintenance, adapting to the injection pressure requirements of different load conditions, and the mechanical adjustment structure is stable without the risk of circuit faults, suitable for harsh off-grid operation environments without electronic control.
Multi-stage mirror grinding of alloy steel valve body, ensuring no leakage during sealing and pressure retention
Integrated segmented turning + mirror grinding treatment of the valve body, with precise and uniform internal clearance, good high-pressure fuel retention effect, valve surface wear-resistant and resistant to diesel corrosion, and no leakage or dripping problems under long-term high-temperature working conditions.
Extended precision conical needle valve, fully reducing carbon deposits under high pressure atomization
The front end is a slender conical fuel injection needle valve, with uniform distribution of small oil holes, fine fuel atomization under high pressure, complete combustion in the cylinder, reduced black smoke emissions, and reduced carbon deposit blockage at the needle valve head, extending the maintenance cycle.
Integrated assembly structure for complete assembly, no additional components required for installation
The spring, rocker shaft, valve body, and needle valve are fully pre-installed as a whole. During disassembly and maintenance, the entire machine can be directly replaced, eliminating the need for separate matching of springs and components, significantly reducing the downtime for equipment maintenance. Applicable scenarios
Suitable for large mining excavators, heavy-duty loaders, engineering drilling equipment, and high-power stationary diesel generators. It is applicable to mining areas and construction sites for 24-hour continuous full-load, high-temperature, high-dust, heavy-duty operation equipment.
Product basic parameters
Product name: Heavy-duty mechanical single injector assembly
Part number: 1278216
Main material: Quenched alloy steel valve body, high-strength pressure-bearing spring, metal adjusting fork, precision conical needle valve
Structural features: Externally mounted thickened pressure spring, positioning adjusting fork, segmented mirror valve body, extended atomizing needle valve
Application conditions: 24-hour continuous full-load, cylinder body high temperature, outdoor high-dust heavy-duty diesel engineering machinery
Product status: New and complete injector assembly, completed with full factory testing of injection pressure, atomization effect, and sealing performance
Packaging: Thick shock-proof hard packaging, individual protection of needle valve tip to avoid bumps and deformation, suitable for cross-border large-scale logistics.
