Description
Product Overview
The electronically controlled high-pressure fuel pump pre-pressurizes the low-pressure fuel through an internal fuel pump, then compresses it with a high-pressure plunger to establish a high-pressure common rail oil pressure. It is combined with an external electronically controlled adjustment component to match the engine load and adjust the fuel supply volume in real time. Under long-term construction site high-temperature dust operations, long-distance bumpy driving, and continuous impurities in diesel washing conditions, the internal plunger, seals, and electronically controlled valve cores may wear and age, resulting in fuel supply leakage, unstable rail pressure, multiple starts required to start the engine, increased fuel consumption, and power output discontinuity. This product has standardized processing for the flange installation hole distance, oil outlet thread specifications, and electronically controlled signal parameters. It allows for direct overall replacement of the fuel pump during maintenance, eliminating the need for disassembling internal components for fitting and adjustment, and is suitable for the maintenance of light-duty freight trucks, small wheeled loaders, diesel pickups, and small fixed diesel generator sets.
Core Advantages of the Single Product
Integrated die-cast aluminum pump body, lightweight and high-strength, with no leakage or deformation
The entire aluminum body is integrally die-cast, with seamless internal oil channels, light self-weight, excellent heat dissipation performance, and is not prone to cracking under long-term high-pressure fuel impact, alternating cold and hot vibrations in the engine compartment, and internal and external oil leakage. It provides a stable base oil pressure for the oil circuit.
Dual independent high-pressure oil outlets, with red dust-proof protective caps for precise threads
Two sets of independent high-pressure oil outlet threads on the left side, pre-installed with red plastic dust-proof protective caps at the factory. During storage and transportation, they prevent dust particles from scratching the thread sealing surface, and after assembly, can be paired with standard sealing gaskets to prevent high-pressure fuel from leaking from the interface.
Exterior complete electronically controlled flow regulation assembly, dynamically and precisely control the fuel rail pressure
The pump body side integrates a complete electronically controlled flow regulation valve body, combined with a waterproof electronically controlled connector with a corrugated wear-resistant protective sleeve, which isolates the engine compartment oil and water vapor interference with the electronically controlled signals, and follows the engine load to adjust the fuel supply volume. From idle to heavy load, the rail pressure is stable without fluctuations.
Metal mechanical adjustment lever structure, with manual auxiliary calibration for the basic fuel supply volume
The upper part is equipped with a black metal adjustment lever and locking bolts, which can assist in fine-tuning the basic fuel supply volume, meeting the calibration requirements of different working conditions for equipment, and solving the problem of high idle speed and weak low-speed power.
Front standard flange drive base, stable and accurate assembly positioning without eccentric wear
The standardized flange drive installation structure at the front end of the pump head, with precise positioning holes, ensures no radial shaking during the pump operation, and no eccentric wear of the internal plunger during the reciprocating motion, maintaining a balanced fuel supply flow over the long term.
Whole machine factory full-condition bench calibration, no need for secondary adjustment when installed
The pump is independently tested for low-pressure fuel supply flow, high-pressure pressure building speed, electromagnetic regulation response, idle stability performance during installation, and factory parameters are unified. After assembly, the equipment has smooth idle speed and linear acceleration, significantly reducing maintenance and debugging time.
List of Accessories
DB4429-5800 Complete Electronically Controlled Common Rail High-Pressure Fuel Pump Assembly 1 piece
Pre-installed red plastic dust-proof protective caps for dual outlets
Pre-installed matching corrugated protective sleeve waterproof electronic control connector
Applicable Scenarios
Suitable for light-duty freight trucks, diesel pickups, small wheeled loaders, and small fixed diesel generator sets equipped with high-pressure common rail fuel supply systems, suitable for short-distance urban delivery, short-distance urban freight transportation, construction site high-temperature dust, and small-sized electrically controlled common rail diesel engines in corrosive environments with impurities in diesel.
Product Basic Parameters
Product Name: DB4429-5800 Electronically Controlled Common Rail High-Pressure Fuel Pump Assembly
Part Number: DB4429-5800
Main Materials: Integrated die-cast aluminum pump body, hardened alloy steel plunger pair, oil-proof plastic dust-proof cap, corrugated protective rubber cable sheath, metal electronically controlled adjustment lever assembly
Structural Features: Integrated aluminum stepped pump body, left-side dual high-pressure oil outlets, side-mounted complete electronically controlled flow regulation assembly, corrugated waterproof electronic control connector, upper mechanical adjustment lever, front-end flange drive installation base Applicable working conditions: High and low pressure fuel electronic control boost delivery, continuous vibration of the engine room due to alternating cold and heat, corrosion of small-sized electronic control common rail diesel engines by impurity diesel.
Product status: Brand new and complete high-pressure fuel pump assembly, completed with all the bench tests for pressure establishment accuracy, high-pressure pressure-bearing, and electromagnetic adjustment response.
Packaging: Independent and thickened shock-proof hard tube packaging. All the oil outlet, drive shaft, and electronic control plug are equipped with dust-proof protection plugs. Foam buffer protection is provided to avoid damage to the threads and internal precision components during transportation. Supports single-piece retail and bulk purchase in cases, and is compatible with cross-border small package logistics.
