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Common Rail Nozzle
Posted at: Offers to Sell and Export | Posted on: Monday 21 September 2026 2:33 am | Poster last visit: Monday 21 September 2026 |
Product Category: Main
» Distribution and Conditioning Systems and Equipment and Components
» Fluid and gas distribution
» Hardware and fittings
» Nozzles
» Common Rail Nozzle
Product Description:Common Rail Nozzle
What Is a Common Rail Nozzle?
A Common Rail Nozzle is a precision-engineered component
used in diesel common rail injection systems. It is installed at the end of the fuel injector and is responsible for atomizing high-pressure diesel fuel into a fine mist inside the combustion chamber.
This fine atomization ensures complete combustion, improved fuel efficiency, reduced emissions, and stable engine performance.
Common rail nozzles are widely used in passenger vehicles, heavy-duty trucks, construction machinery, agricultural equipment, and industrial diesel engines.
How a Common Rail Nozzle Works
The common rail nozzle operates under extremely high fuel pressure and electronic control:
High-pressure fuel is delivered from the common rail
The injector needle controls fuel flow into the nozzle
Fuel passes through micro-sized orifices in the nozzle tip
Fuel is atomized into fine spray patterns inside the combustion chamber
ECU controls injection timing and multiple injection events per cycle
This precise control enables efficient combustion and optimized engine performance.
Types of Common Rail Nozzles
1. Multi-Hole Nozzle
Most widely used type
Contains 5–9 micro holes
Produces fine and evenly distributed spray pattern
Ideal for modern passenger and commercial diesel engines
2. Sac-Type Nozzle
Contains a small internal cavity (sac)
Suitable for older diesel injection systems
Simple structure and stable performance
3. VCO (Valve Covered Orifice) Nozzle
No sac volume design
Reduces fuel dribble after injection
Improves emissions control and combustion efficiency
4. Mini-Sac Nozzle
Reduced sac volume design
Balances durability and emission performance
Common in Euro IV / V / VI systems
Key Components of a Common Rail Nozzle
A high-precision nozzle assembly includes:
Nozzle body
Needle valve
Nozzle seat
Spray holes (micro-orifices)
Control chamber
High-pressure sealing surface
Heat-treated nozzle tip
Each component must meet strict micron-level precision requirements.
Materials Used in Common Rail Nozzles
To withstand extreme pressure and heat, nozzles are made from:
High-strength alloy steel
Hardened stainless steel
Tungsten carbide-coated materials
Anti-wear surface coatings
Heat-treated precision metal alloys
These materials ensure resistance to erosion, cavitation, and high-temperature fatigue.
Applications of Common Rail Nozzles
Common rail nozzles are used in a wide range of diesel engines:
Passenger diesel cars
Heavy-duty trucks and buses
Construction machinery (excavators, loaders)
Agricultural tractors and harvesters
Marine diesel engines
Industrial generator sets
Mining and off-highway equipment
Company Contact:
Contact Name: Injectionsystem
Company Name: Fujikura Diesel Co., Ltd
Email:
Tel: 18002570017
Fax:
Street Address: Runzhi R&d
Center, No.5 Runfang Road, Shenzhen,
Guangdong, China
Shenzhen, Guangdong 518133
China
Website: https://www.injectionsystem.cn/
Member name: injectionsystem
Country: China
Member Since: 21 September 2026
Total Leads: 5 injectionsystem Import Export Business Leads
Business focus: Aftermarket, Rail Fuel Pump
Verify: Safe Import Export Tips
What Is a Common Rail Nozzle?
A Common Rail Nozzle is a precision-engineered component
used in diesel common rail injection systems. It is installed at the end of the fuel injector and is responsible for atomizing high-pressure diesel fuel into a fine mist inside the combustion chamber.
This fine atomization ensures complete combustion, improved fuel efficiency, reduced emissions, and stable engine performance.
Common rail nozzles are widely used in passenger vehicles, heavy-duty trucks, construction machinery, agricultural equipment, and industrial diesel engines.
How a Common Rail Nozzle Works
The common rail nozzle operates under extremely high fuel pressure and electronic control:
High-pressure fuel is delivered from the common rail
The injector needle controls fuel flow into the nozzle
Fuel passes through micro-sized orifices in the nozzle tip
Fuel is atomized into fine spray patterns inside the combustion chamber
ECU controls injection timing and multiple injection events per cycle
This precise control enables efficient combustion and optimized engine performance.
Types of Common Rail Nozzles
1. Multi-Hole Nozzle
Most widely used type
Contains 5–9 micro holes
Produces fine and evenly distributed spray pattern
Ideal for modern passenger and commercial diesel engines
2. Sac-Type Nozzle
Contains a small internal cavity (sac)
Suitable for older diesel injection systems
Simple structure and stable performance
3. VCO (Valve Covered Orifice) Nozzle
No sac volume design
Reduces fuel dribble after injection
Improves emissions control and combustion efficiency
4. Mini-Sac Nozzle
Reduced sac volume design
Balances durability and emission performance
Common in Euro IV / V / VI systems
Key Components of a Common Rail Nozzle
A high-precision nozzle assembly includes:
Nozzle body
Needle valve
Nozzle seat
Spray holes (micro-orifices)
Control chamber
High-pressure sealing surface
Heat-treated nozzle tip
Each component must meet strict micron-level precision requirements.
Materials Used in Common Rail Nozzles
To withstand extreme pressure and heat, nozzles are made from:
High-strength alloy steel
Hardened stainless steel
Tungsten carbide-coated materials
Anti-wear surface coatings
Heat-treated precision metal alloys
These materials ensure resistance to erosion, cavitation, and high-temperature fatigue.
Applications of Common Rail Nozzles
Common rail nozzles are used in a wide range of diesel engines:
Passenger diesel cars
Heavy-duty trucks and buses
Construction machinery (excavators, loaders)
Agricultural tractors and harvesters
Marine diesel engines
Industrial generator sets
Mining and off-highway equipment
Company Contact:
Contact Name: Injectionsystem
Company Name: Fujikura Diesel Co., Ltd
Email:
Tel: 18002570017
Fax:
Street Address: Runzhi R&d
Center, No.5 Runfang Road, Shenzhen,
Guangdong, China
Shenzhen, Guangdong 518133
China
Website: https://www.injectionsystem.cn/
Member name: injectionsystem
Country:
ChinaMember Since: 21 September 2026
Total Leads: 5 injectionsystem Import Export Business Leads
Business focus: Aftermarket, Rail Fuel Pump
Verify: Safe Import Export Tips
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