Description
Product Overview
The single pump integrates the high-pressure plunger and the fuel injector together. It uses the engine cam to drive the plunger to establish high-pressure fuel, and the side shaft linkage speed control mechanism controls the fuel injection volume. The tail spring realizes the reciprocating reset of the plunger. It is widely compatible with heavy mining machinery, heavy-duty trucks, and large power generation sets with mechanical diesel power.
Under long-term heavy-duty conditions in mining areas, such as 24-hour operation and continuous high-temperature conditions in the engine compartment, the plunger mating surface will wear, the spring elasticity will decline, and the fuel injector will accumulate carbon and become clogged. This will result in a decrease in fuel supply pressure, poor atomization effect, a decline in the overall engine power, and a sharp increase in fuel consumption. This product is a complete integrated finished product. It undergoes a full set of tests for fuel injection pressure, fuel injection volume under various conditions, and high-pressure sealing at the factory. The replacement of the entire machine does not require disassembling the internal precision components, significantly reducing the maintenance time.
Core Exclusive Advantages of the Single Product
The external thickened high-temperature alloy reset spring has stable rebound and is not prone to fatigue deformation.
The tail large-diameter high-temperature tempering spring is resistant to high temperatures and compression fatigue during reciprocating motion. It does not lose elasticity during long-term full-load operation, ensuring that the plunger is reset to the correct position during each suction stroke, providing continuous and stable fuel supply, eliminating idle jitter and intermittent fuel supply problems.
The segmented stepped mirror-hardened alloy steel pump body is wear-resistant and resistant to high pressure, reducing internal leakage.
The pump body is processed in multiple stepped sections of alloy steel, and is overall nitrided and finely ground with a mirror finish. The gap between the plunger and the cylinder is extremely precise, and it is not easily scratched or worn under long-term high-pressure diesel erosion, effectively preventing internal leakage of oil pressure and maintaining stable fuel supply pressure.
The side-mounted integrated fuel quantity adjustment lever, precisely balancing the fuel injection volume of each cylinder.
The adjusting lever on the valve body side is formed to precisely match the engine speed control mechanism, allowing for unified adjustment of the fuel supply volume of a single cylinder, balancing the power output of the entire machine, and improving problems such as insufficient acceleration, excessive black smoke emissions, and uneven power output of each cylinder. Assembly alignment is simple.
The front end conical precision micro-hole nozzle, with fine fuel atomization and complete combustion.
The conical fuel atomization holes at the head cut the high-pressure fuel into uniform and fine oil droplets, allowing for thorough combustion of the mixture in the cylinder, reducing carbon accumulation in the cylinder, lowering fuel consumption, and extending the engine maintenance cycle.
Multiple ring-shaped sealing slots, providing multi-layer protection to prevent fuel leakage and pressure relief.
The pump body is reserved multiple sealing ring installation slots, and when paired with the corresponding sealing components, they form a multi-layer sealing barrier to prevent high-pressure fuel from leaking through the gaps in the pump body and avoid the accumulation of oil stains on the cylinder cover and the continuous drop in oil pressure. Applicable scenarios
It is suitable for heavy-duty freight trucks, large mining excavators, heavy-duty loaders, and high-power fixed diesel generators equipped with a single pump fuel supply system; it is applicable to the 24-hour full-load, high-temperature, and high-pollution heavy-duty diesel equipment spray systems for maintenance and replacement in mining areas and construction sites.
Product Basic Parameters
Product Name: Mechanical Single Pump Injector Assembly
Part Number: 4P2995
Main Material: Nitrided hardened alloy steel pump body, high-temperature alloy reset spring, steel adjustable shift fork, hardened precision nozzle
Structural Feature: Externally enlarged reset spring, segmented stepped mirror pump body, side-mounted oil quantity adjustment shift fork, conical atomizing nozzle, multiple ring-shaped sealing grooves
Application Conditions: 24-hour continuous full-load, long-term high-temperature in the engine compartment, outdoor high-pollution heavy-duty mechanical diesel engine
Product Status: Brand-new complete single pump assembly, factory completed with full calibration and testing of injection pressure, full-load injection volume, and high-pressure sealing performance
Packaging: Thick shock-proof hard packaging box, nozzle and spring ends independently protected to avoid transportation impact and scratches on the precision piston and nozzle holes; supports single or multiple sets of batch purchases, and is compatible with cross-border large-scale logistics.
