Description
Product Overview
The oil discharge valve component is assembled on the upper end of the plunger. Its function is to cut off the high-pressure oil circuit, maintain the residual oil pressure in the oil pipe, prevent the fuel injector from stopping and dripping oil, and stabilize the spray pressure each time. Under long-term high-temperature and diesel with hard impurities flushing conditions, the sealing surface of the valve head wears out and the gap expands, resulting in the loss of residual pressure in the pipeline, large deviation in the fuel injection volume of a single cylinder, delayed startup, idle vibration, and black smoke emission. This product is an integrated precision oil discharge valve that is factory-finished with pressure sealing and flow matching detection. The dimensions are standardized, and disassembly and assembly do not require grinding. It is suitable for the maintenance of various multi-cylinder heavy-duty trucks, construction machinery, heavy-duty loaders, and multi-cylinder mechanical inline fuel injectors of large power diesel generators.
Unique core advantages of the single product
Widened flange integrated pressure-bearing base, stable positioning and shock resistance
The widened flange base at the bottom precisely fits and limits the position of the oil pump's oil discharge valve seat, and is not prone to displacement or deformation under the impact of the spring's high-frequency vibration, ensuring the coaxiality of the valve components and avoiding unilateral wear and sealing failure and pressure leakage.
Frontal stepped guide push rod, smooth and free from jamming during opening and closing
Multi-level stepped smooth push rods, stable reciprocating opening and closing guidance, without skewing or jamming, synchronous response to oil cut-off, balancing the residual oil pressure of each cylinder, improving idle vibration and the significant difference in power among cylinders.
Flat precision sealing valve head, excellent locking and sealing effect when the oil is cut off
The valve head is precisely ground to high precision, closely adhering to the valve seat, completely sealing the oil circuit at the moment of fuel injection end, locking the residual high pressure in the oil pipe, preventing fuel dripping and accumulation of carbon when the engine stops, and improving cold start performance.
Overall nitrided hardened alloy steel, wear-resistant and corrosion-resistant, with a long service life
The entire valve body is processed by high-hardness alloy steel, with surface nitriding hardening + mirror finish grinding. Under long-term high-pressure diesel flushing, it is not prone to scratches, suitable for mining areas, construction sites with high dust and harsh working conditions.
Precise oil passage processing without burrs, less likely to accumulate carbon and block
The inner wall of the oil passage guide is polished without burrs, making it difficult for diesel gums and tiny impurities to adhere and accumulate, reducing valve component sticking, abnormal fuel supply faults, and reducing frequent maintenance costs.
Applicable scenarios
Suitable for multi-cylinder mechanical direct injection fuel supply systems of heavy-duty freight trucks, agricultural tractors, heavy-duty loaders, large-power diesel generators, and diesel engine fuel injectors of heavy-duty diesel engines in mining areas and construction sites operating 24 hours at full load, with long-term high-temperature and high-dust working conditions.
Product basic parameters
Product name: Oil discharge valve component
Part number: A61
Main material: Overall nitrided hardened alloy steel
Structural features: Widened flange pressure-bearing base, stepped guide push rod, flat sealing valve head, precise pressure-sealing structure
Applicable working conditions: 24-hour continuous full load, engine compartment with long-term high-temperature, outdoor high-dust heavy-duty diesel engine fuel injector
Product status: New precision oil discharge valve, factory-finished with pressure sealing, flow response calibration detection
Packaging: Independent transparent protective tube packaging, with plastic plugs at both ends for protection, avoiding scratches on the sealing surface during transportation, supporting single, multi-pack bulk purchase, and suitable for cross-border small items and full-box logistics
