Description
Product Overview
317-8021 High-pressure Common Rail Fuel Pump is the core fuel supply assembly for high-power diesel engines. It adopts an integrated double-chamber pump body structure, combining the low-pressure oil supply chamber and the high-pressure boost chamber. It is equipped with an external electronic control pressure regulating module to work in coordination, continuously supplying stable high-pressure fuel to the injection system. When the old fuel pump experiences pressure leakage, reduced fuel supply flow, pressure regulation failure, or oil leakage from the pump body, the entire unit can be replaced directly without disassembling scattered parts for repair, significantly reducing the downtime and maintenance time for large-scale construction machinery.
Unique Core Features of the Single Product
Integrated double-chamber aluminum pump body, simultaneous oil supply and boost
The overall die-cast double-chamber structure, with one side responsible for extracting and transporting fuel and the other side completing high-pressure boost. The internal channels of the oil circuit are integrated without splicing, reducing fuel loss during transportation, and maintaining stable fuel supply flow under high-speed and heavy-load conditions without interruption.
Front-end coaxial transmission main shaft, with large flange surface positioning installation
The front-end thickened solid transmission main shaft is paired with a large-sized circular installation flange. The flange has multiple groups of fixed screw holes evenly distributed, ensuring uniform force during assembly, preventing the pump body from shifting or loosening under long-term vibration operation, and ensuring synchronous transmission without slippage.
Exterior yellow independent electronic control pressure regulating module, with sensitive pressure regulation response
A separate yellow electric control pressure regulating valve body is equipped on the side, combined with the pump body in a split design. It can independently sense the oil circuit pressure and adjust it in real time. The oil pressure is adjusted without delay when the throttle load changes, precisely matching the fuel supply requirements of the engine under different working conditions, avoiding excessive or insufficient oil pressure.
Multiple standard sealing thread oil ports, multi-channel oil circuit compatibility
The body is reserved for multiple specifications of oil inlet and outlet threaded connectors, suitable for multi-channel fuel pipeline layout. The threaded interface has a stepped sealing structure, combined with a sealing gasket, to achieve high-pressure oil leakage prevention. It can flexibly match different pipeline directions of equipment.
Segmented fastening bolt locking structure, long-lasting pump body sealing without oil leakage
Each joint surface of the pump body is locked with multiple evenly distributed bolts. The internal is equipped with high-temperature-resistant and oil-resistant sealing pads. The sealing structure is not prone to aging and failure under long-term high-temperature and high-pressure operation, eliminating oil leakage or accumulation at the joint gap.
Application Scenarios
Suitable for high-power common rail diesel power units, widely used in large wheel loaders, mining excavation equipment, heavy engineering excavators, and fixed high-power generator sets. Suitable for oil circuit systems of equipment operating under all-weather full-load continuous operation in mining areas and outdoor construction sites.
Product Basic Parameters
Product Name: Dual-chamber Integrated High-pressure Common Rail Fuel Pump Assembly
Part Number: 317-8021
Main Materials: Aluminum integrated pump body, alloy transmission main shaft, metal pressure regulating valve body, high-temperature-resistant sealing components
Structural Characteristics: Dual-chamber integrated pump body, flange transmission main shaft, external yellow electric control pressure regulating module, multiple threaded oil ports
Application Conditions: High-power continuous heavy-load, high-temperature, high-dust outdoor industrial operation environment
Product Status: New and complete assembly, completed with full-item testing of fuel pump flow, high-pressure sealingity, and electronic control pressure regulation
Packaging: Thickened and reinforced shock-proof wooden box packaging, providing comprehensive protection for the transmission main shaft, pressure regulating valve body, and threaded interfaces, suitable for cross-border long-distance sea and land logistics
