Description
Product Overview
This integrated nozzle is assembled at the front end of the mechanical fuel injector. It relies on the internal needle valve and the cylinder body's sealing fit to allow high-pressure fuel to be torn apart through the front micro-hole, forming fine oil mist that is then sprayed into the cylinder to complete combustion and work. Under long-term impaction from impure diesel, continuous high-temperature radiation in the combustion chamber, and vibration from equipment operation, the front nozzle holes may wear out and enlarge, causing scratches on the sealing contact surface. This can result in fuel leakage, poor atomization effect, insufficient combustion, reduced equipment power, difficulty in cold start, and excessive black smoke emissions from the exhaust. This product has standardized outer diameter, step limit dimensions, and nozzle hole diameters. After disassembling the fuel injector, the nozzle can be replaced separately to repair the failure of fuel injection. It is suitable for small tractors, micro trucks, light diesel pickup trucks, and small fixed diesel generator sets for the maintenance and repair of mechanical direct injection diesel engines.
Core advantages of this product
The integral nozzle is made of tempered and hardened alloy steel, which is wear-resistant and resistant to high-temperature erosion.
The entire steel is hardened by high-temperature quenching, and the structure is an integrated one without splicing. It can withstand long-term continuous erosion by high-pressure fuel and high-temperature radiation in the combustion chamber. The nozzle holes and sealing surfaces are less likely to deform or scratch, maintaining stable atomization performance over a long period.
Single-step limit cylinder body, with secure assembly and no radial offset
The integrated step limit platform on the upper part of the cylinder body precisely positions when installing the fuel injector housing, preventing radial shaking during operation and ensuring the coaxiality of the internal needle valve's reciprocating motion. It avoids single-sided wear that causes fuel leakage and pressure loss.
Built-in mirror-polished needle valve, smooth opening and closing without sticking
The inner cavity is fully micrometer-level mirror-polished, and the friction resistance of the precise needle valve during lifting and lowering is small. Under the push of high-pressure fuel, the opening and closing response is rapid, eliminating injection lag and idle wobble problems.
Front precision micro-hole atomization holes, fine and fully atomized fuel
The standard micro-hole spray structure at the head end, after the high-pressure fuel is sprayed out, disperses into uniform fine oil mist. The mixture of oil and gas is fully formed, reducing carbon deposits in the cylinder and lowering exhaust black smoke emissions and fuel loss.
The outer wall is permanently engraved with the model code, allowing for quick identification during storage and maintenance.
The cylinder body is laser-engraved with DN0SD193 model identification, which is resistant to diesel soaking and repeated wiping without the characters falling off. During inventory and on-site disassembly and assembly, it can quickly match the corresponding model to avoid incorrect installation and trigger abnormal fuel injection faults.
Each piece has independent atomization flow calibration, and no manual adjustment is required for installation.
Each nozzle is individually tested on the machine for fuel injection volume, high-pressure holding time, and uniformity of atomization. The factory performance parameters are uniform, and after disassembly, it can be directly matched with the corresponding fuel injector, significantly reducing maintenance and debugging time.
Parts list
DN0SD193 Integrated Fuel Injector Nozzle Pair 1 piece (with built-in precise needle valve) Vacuum-sealed individual packaging Applicable scenarios
This product is suitable for small agricultural tractors with mechanical direct injection fuel supply system, mini freight trucks, light diesel pickup trucks, small stationary diesel generators. It is applicable for light agricultural cultivation, short-distance urban-rural distribution, small construction site equipment, and replacement of the front end atomization injection components of small diesel engines in corrosive environments with impurities in diesel fuel.
Product Basic Parameters
Product Name: DN0SD193 Integrated Mechanical Injector Assembly
Part Number: DN0SD193
Main Material: Tempered hardened alloy steel
Structural Feature: Single-step limit cylinder, integrated built-in needle valve, front micro-hole atomization injection hole, outer wall engraved model code, mirror-finished sealed inner cavity
Application Conditions: High-pressure fuel atomization injection, combustion chamber high-temperature radiation, alternation of cold and hot in engine compartment vibration, small mechanical direct injection diesel engine core injection component corrosion by impurities in diesel fuel
Product Status: New and complete injector assembly, factory completed with full calibration and testing for atomization accuracy, high-pressure sealing, and flow matching
Packaging: Independent vacuum-sealed plastic bag packaging, isolated from dust and oil stains, hard tube protection for cushioning and protection to avoid磕碰划伤 the precise sealing surface and the end face of the injection hole， supports single-unit retail and bulk purchase per bag， compatible with cross-border small package logistics.
