Description
Product Overview
The fuel injectors are assembled on the engine cylinder head and receive signals from the electronic control unit to precisely control the timing and volume of high-pressure fuel injection, achieving thorough combustion in layers. Under long-term urban road vibrations, engine compartment temperature alternations, and impurities from diesel washing conditions, the valve core sealing surface may wear, the sealing rubber ring may age, and the electromagnetic valve signal response may lag. This can result in unbalanced single-cylinder power output, power loss, fuel leakage into the engine oil to dilute the lubricating medium, and the fault warning light remaining constantly on. This product is an integrated finished fuel injector, with standardized dimensions for the outer diameter, oil passage interface, and electronic control plug. The injection curve is uniformly calibrated at the factory, eliminating the need for additional pressure adjustment and debugging during maintenance and replacement. It is suitable for light-duty freight vehicles, diesel commercial buses, and maintenance of small diesel generator sets.
Core advantages of this product:
The elongated segmented black anodized alloy steel valve body is resistant to vibration and high temperatures.
The multi-segment elongated integrated black anodized alloy steel housing has an outer wall with thickened reinforcing ribs, suitable for shallow cylinder head installation structures, capable of withstanding long-term road vibrations and continuous high-temperature conditions in the engine compartment, and not deforming or cracking under thousands of bar high-pressure conditions, preventing high-pressure fuel leakage and pressure relief.
The waterproof and insulated side dual-pin electronic control plug ensures stable signal transmission.
The side dual-metal pins are conductive terminals with built-in gold-plated contacts, and an outer insulation protective shell. It isolates diesel oil, gas, and water vapor oxidation corrosion, ensuring no delay in electronic control signal transmission, smooth pre-injection and main injection switching, eliminating acceleration power surges and intermittent cylinder failure and engine shutdown.
The yellow and white dual-color oil passage dust-proof plugs provide comprehensive protection for the precise channels.
The high-pressure oil inlet port is equipped with a yellow plastic plug, and the low-pressure return oil port is equipped with a white protective cap. These plugs are used to seal the oil passage during storage, cross-border transportation, disassembly, and maintenance, preventing dust and impurities from scratching the internal valve core and blocking the front injection holes, and avoiding failure of the injection holes after assembly.
The purple middle part indicates the sealing ring, providing dual functions of positioning and sealing.
The purple ring on the rod body serves as both assembly positioning and auxiliary sealing effect, precisely matching the installation depth of the cylinder head, and combining with multiple sealing grooves on the rod body to prevent the upward migration of high-temperature gas in the combustion chamber and the outward leakage of high-pressure fuel, preventing the engine oil from being diluted by the fuel.
The purple circular seal ring at the front end of the fuel injector nozzle is an integrated seal ring that fits tightly to the cylinder head installation hole, buffering the high-temperature impact in the cylinder, blocking the oil circuit, and stabilizing the working oil pressure of the common rail system.
The entire machine undergoes a complete set of flow calibration at the factory, allowing for quick restoration of power after replacement.
The factory completes the detection of high-pressure injection flow, opening pressure, and atomization effect under all working conditions of high and low pressure, ensuring high consistency of parameters in the same batch of fuel injectors. After replacement, the idle speed is stable, the power output is linear, and the maintenance and debugging time is significantly reduced. Applicable scenarios
This product is suitable for light-duty freight trucks with high-pressure common rail fuel supply systems, diesel commercial buses, and small fixed diesel generators. It is applicable for short-distance urban passenger and freight transportation, outdoor alternating high and low temperatures, and light-duty electric control common rail diesel engines operating in dusty and impure diesel environments.
Product Basic Parameters
Product Name: 33800-4A710 Electronic Control Common Rail Injector Assembly
Part Number: 33800-4A710
Main Material: Passivated extended alloy steel valve body, tungsten carbide fuel injector, copper sealing ring, oil-resistant insulated electronic control component
Structural Feature: Extended segmented black valve body, lateral double-pin electronic control plug, yellow-white dual-color oil circuit dust-proof plug, purple sealing identification ring in the middle, copper ring seal fuel injector at the front end
Application Conditions: Medium-high pressure continuous injection, engine compartment alternating hot and cold, road bumps and dusty impure diesel environment for light-duty electric control common rail diesel engines
Product Status: New and complete injector assembly, factory completed with full set of machine calibration and testing for atomization accuracy, high-pressure sealingity, and electronic control opening and closing response
Packaging: Single independent shock-proof hard cardboard box packaging, three ports pre-installed dust-proof protection plugs, cushion foam to isolate transportation impacts and scratches on the precise spray holes and conductive terminals, supports single-piece retail, bulk purchase in cases, and is compatible with cross-border small items and case logistics.
