Description
Product Overview
The inline six-cylinder fuel injection pump relies on the synchronous reciprocating motion of six sets of pistons inside to compress the fuel and establish high pressure. It quantitatively delivers fuel to the fuel injectors according to the ignition sequence of the cylinders, and adjusts the circulating fuel supply volume in real time through the side-mounted speed regulating linkage mechanism to match the equipment load. Under long-term continuous heavy-duty mining operations, long-distance freight transportation, high-temperature vibration in the engine compartment, and impurities from diesel washing conditions, the wear of the piston mating surfaces, the failure of the oil outlet valve seal, and the jamming of the speed regulating mechanism may occur, resulting in fuel supply leakage, insufficient acceleration, speed drift, multiple starts required for startup, and diesel seeping into the engine oil to dilute the lubricating oil. This product features standardized processing of the flange installation holes, piston stroke, oil outlet spacing, and speed regulating stroke. Maintenance can be carried out by directly replacing the oil pump as a whole, eliminating the need for disassembly, adjustment, and debugging procedures, and is suitable for maintenance of six-cylinder heavy-duty trucks, large mining excavators, wheeled loaders, and high-power stationary diesel generators.
Core Advantages of the Single Product
Thickened integral cast aluminum pump body, lightweight, high-strength, and resistant to deformation and leakage
The entire cast aluminum is integrally pressed and formed, with strengthened pump body wall thickness, seamless internal oil channels, low self-weight, excellent heat dissipation performance, capable of continuously withstanding high-pressure fuel impact, resistant to cracking in alternating cold and hot, and internal and external oil leakage, providing a stable base oil pressure for fuel supply.
Six independent high-pressure oil outlets, equipped with green sealing gaskets, balanced fuel supply per cylinder
Six independent high-pressure oil screw ports at the top, each pre-installed with a green oil-resistant sealing gasket, after assembly, preventing high-pressure fuel from leaking from the interface; synchronous processing of the six cylinders' pistons, with extremely small flow differences in each cylinder's fuel supply, ensuring smooth engine operation without cylinder shortage or vibration.
Complete mechanical speed regulating assembly on the side, linearly adjusting fuel injection volume to adapt to full load
The right side integrates a complete mechanical speed regulating linkage, spring, and adjustment lever structure, which can linearly adjust the fuel injection volume in no-load, medium-load, and heavy-load conditions, eliminating power breaks and unstable speed issues, and meeting the requirements of heavy-load climbing, idle standstill, and other working scenarios.
Red protective sealing cover plate, protecting the internal precision components of the speed regulating mechanism
A red hard protective cover plate is equipped on the outside of the speed regulating mechanism, preventing dust, oil stains, and water vapor from invading the engine compartment, avoiding rusting and jamming of the speed regulating spring and lever, and extending the service life of the oil pump speed regulating mechanism.
Standard drive flange base at the front end, stable installation alignment without eccentric wear
The front end of the pump head is reserved for standard flange drive installation structure, with precise positioning holes, ensuring no radial shaking of the oil pump during operation, no eccentric wear of the piston reciprocating motion, and maintaining the balance of six-cylinder fuel supply over the long term.
Six-cylinder synchronous flow bench calibration of the entire unit, no need for secondary adjustment during installation
The entire pump is independently tested for the uniformity of six-cylinder fuel supply, high-pressure sealing, speed regulating response speed, and idle stability before leaving the factory. The parameters are unified after assembly, ensuring stable idle speed and balanced power output, significantly reducing maintenance and debugging time.
Accessory List
3938796 Complete six-cylinder inline high-pressure fuel injection pump assembly 1 piece
Pre-installed green oil-resistant sealing gaskets for six-way oil outlets
Pre-installed red protective cover plate for the speed regulating mechanism Applicable scenarios
This product is suitable for long-distance heavy-duty freight trucks with six-cylinder mechanical direct injection fuel system, large mining excavators, heavy-duty wheeled loaders, high-power stationary diesel generators. It is applicable for 24-hour continuous heavy-duty operations in mines, long-distance trunk transportation, construction site high-temperature dust and impurity diesel corrosion environments. The six-cylinder mechanical direct injection diesel engine fuel supply boost components replacement is suitable for this product.
Product Basic Parameters
Product Name: 3938796 Six-Cylinder In-Line Mechanical High-Pressure Injection Pump Assembly
Part Number: 3938796
Main Material: Thickened integral cast aluminum pump body, hardened mirror-finished polished plunger pair, oil-resistant rubber sealing gasket, metal speed regulating connecting rod assembly, red plastic protective cover plate
Structural Feature: Six-cylinder in-line stepped pump body, top six high-pressure outlet ports, front end drive installation flange, right side integrated mechanical speed regulating mechanism, red speed regulating protective cover plate, outer wall identification nameplate
Application Conditions: Medium-high pressure reciprocating cylinderized fuel supply, engine compartment high temperature vibration, impurity diesel corrosion six-cylinder mechanical direct injection diesel engine
Product Status: New and complete injection pump assembly, factory completed with complete bench test calibration and detection for six-cylinder fuel supply uniformity, high-pressure pressure bearing, speed regulation response
Packaging: Independent thickened shock-proof wooden tube packaging, all outlet ports and drive end equipped with plastic dust-proof plugs, foam buffer protection to avoid transportation impact damage to the threads and precise mating surfaces of the plunger and pump, supports single-piece retail, bulk purchase in cases, suitable for cross-border large-sized logistics.
