Description
### Product Overview
The fuel injector component is assembled at the front end of the common rail injector. It achieves fuel atomization and injection by the reciprocating opening and closing of the needle valve, converting high-pressure fuel into uniform oil mist and ensuring thorough mixing with air for combustion. Under long-term high-pressure fuel erosion and friction from oil impurity particles, the fuel injection holes will wear out and the sealing cone surface will be scratched, resulting in poor atomization and uncontrollable injection. This product is standardized in terms of its size and fuel injection hole parameters. It can be replaced during the disassembly and maintenance of the injector, effectively restoring the engine's combustion efficiency. It is suitable for maintenance of common rail diesel engines of heavy trucks and construction machinery.
Core advantages of the product
1. **High-strength wear-resistant alloy steel substrate, resistant to erosion and not prone to wear**
The fuel injector is precisely machined from special alloy steel, and the working surface is strengthened and quenched. It can withstand the impact of high-pressure fuel and impurities for a long time. The spray holes are not prone to expansion, and the sealing cone surface is not easily scratched.
2. **High-precision micro spray holes, uniform and stable atomization effect**
The spray holes are produced by precise drilling technology. The hole diameter and angle are strictly controlled. Under high pressure, the fuel is torn and refined fully, and the oil mist is evenly distributed, promoting complete combustion and reducing exhaust smoke.
3. **Precise sealing cone surface, tight closure and no post-drip oil**
The sealing surface of the needle valve is precisely matched and ground. It fits tightly at the closing moment. There is no fuel leakage during off-idle and idle conditions, avoiding an increase in carbon deposits and black smoke from the exhaust pipe.
4. **Standard outer diameter of the guide shaft, high assembly coaxiality and no jamming**
The outer diameter tolerance of the guiding section is strict, and the gap between it and the fuel injector housing is reasonable. The reciprocating motion is smooth, reducing the probability of needle valve jamming.
5. **Resistant to alternating high and low temperature conditions, adaptable to complex working environments**
The material has excellent thermal stability. The size deformation of the combustion chamber is small under alternating hot and cold conditions, maintaining stable injection performance continuously.
6. **Flow and spray inspection at factory, uniform performance of each piece**
Each batch of products undergoes sampling tests for fuel injection flow and spray morphology. The parameter consistency is high, and the engine cylinders work evenly after maintenance and assembly.
### List of Accessories
- DLLA118P2203 Injector O-ring Assembly 1 piece
### Applicable Scenario
It is suitable for heavy trucks, buses, excavators, loaders and other construction machinery equipped with corresponding common rail diesel engines. It is used for disassembling and repairing fuel injectors, and replacing and repairing faulty atomization.
### Product Basic Parameters
Product Name: Injector Nozzle Assembly
Part Number: DLLA118P2203
Main Material: Wear-resistant high-strength special alloy steel
Structural Feature: Multi-nozzle structure, precise sealing conical surface, stepped guide shaft body
Applicable Conditions: Front-end injection component of diesel engine high-pressure common rail injector, high-frequency reciprocating opening and closing, core atomization accessory under continuous high-pressure and high-temperature conditions
Product Status: Brand-new and complete injector nozzle assembly, factory completed with injection flow and spray characteristic bench calibration and testing
Packaging: Independent shock-proof protective packaging, protecting the injection holes and sealing conical surfaces from磕碰 damage； supporting single-piece retail and bulk purchase of the whole package， suitable for cross-border logistics transportation.
