3393476
Injector Fuel Supply Tube
Cummins®

The Cummins Injector Fuel Supply Tube (Part #3393476) is a critical component in the fuel system of heavy-duty trucks. It ensures efficient engine performance by facilitating the delivery of fuel to the injectors. This component is integral to maintaining the optimal operation of the fuel injection system, which is essential for the overall performance and reliability of the engine.

Basic Concepts of Injector Fuel Supply Tube

The Injector Fuel Supply Tube operates on fundamental principles within the fuel injection system. Its primary function is to deliver fuel from the fuel pump to the injectors. This process involves maintaining proper fuel pressure and flow, which are essential for the injectors to atomize fuel effectively for combustion. The tube must withstand high pressures and temperatures, ensuring a consistent and reliable fuel supply ¹.

Purpose of the Injector Fuel Supply Tube

The Injector Fuel Supply Tube plays a significant role in the operation of a truck by delivering pressurized fuel from the fuel pump to the injectors. This ensures consistent fuel delivery for combustion, which is essential for engine efficiency and performance. By maintaining a steady fuel flow, the tube contributes to the engine’s ability to operate smoothly and efficiently under various conditions ².

Key Features

The Cummins Injector Fuel Supply Tube is characterized by several key features. Its durable construction ensures longevity, while its precise engineering guarantees accurate fuel delivery. The tube is designed to be compatible with Cummins engines, ensuring seamless integration into the fuel system. Additionally, it is built to withstand high fuel pressures and temperatures, making it suitable for demanding operating conditions ³.

Benefits

Using the Cummins Injector Fuel Supply Tube offers several benefits. It contributes to improved fuel efficiency by ensuring that fuel is delivered consistently and under the correct pressure. This results in enhanced engine performance, as the injectors can atomize fuel more effectively. Additionally, the tube reduces the risk of fuel leaks or contamination, increasing the reliability and durability of the fuel system in challenging environments.

Troubleshooting and Maintenance

When troubleshooting issues related to the Injector Fuel Supply Tube, it is important to be aware of common symptoms such as inconsistent engine performance or fuel delivery problems. Diagnostic procedures may involve checking for leaks, verifying fuel pressure, and inspecting the tube for signs of wear or damage. Recommended maintenance practices include regular inspections and replacements as needed to ensure optimal performance and longevity of the component.

Installation Considerations

Installing the Cummins Injector Fuel Supply Tube requires attention to several important considerations. Proper torque specifications must be followed to ensure a secure connection. Alignment procedures should be carefully executed to prevent leaks and ensure efficient fuel flow. Compatibility with other fuel system components is also crucial to maintain a leak-free and efficient installation.

Cummins Overview

Cummins Inc. is a renowned manufacturer of diesel engines and powertrain technologies. With a rich history and a strong reputation for innovation and quality, Cummins plays a significant role in powering commercial vehicles and equipment worldwide. The company’s commitment to excellence is evident in its wide range of products, including the Injector Fuel Supply Tube, which is designed to meet the rigorous demands of heavy-duty applications.

Cummins Injector Fuel Supply Tube (Part 3393476) Compatibility

The Cummins Injector Fuel Supply Tube, identified by the part number 3393476, is a critical component in the fuel delivery system of various Cummins engines. This part ensures that fuel is efficiently and accurately delivered to the injectors, which is essential for maintaining optimal engine performance and efficiency.

Engine Compatibility

The Injector Fuel Supply Tube (3393476) is specifically designed to fit the following Cummins engines:

• 6B5.9 Series
  • This series includes a range of engines that are known for their robust performance and reliability. The 3393476 part is engineered to seamlessly integrate with the fuel systems of these engines, ensuring consistent fuel flow and pressure.

Application in Engine Systems

In the 6B5.9 series engines, the injector fuel supply tube plays a pivotal role in the overall fuel management system. It connects the fuel pump to the injectors, ensuring that the precise amount of fuel is delivered at the correct pressure and timing. This is crucial for the engine’s combustion process, which directly affects power output, fuel efficiency, and emissions.

Importance of Proper Fitment

Ensuring that the injector fuel supply tube is correctly fitted is vital for the engine’s performance. Any discrepancies or damage to this part can lead to issues such as poor fuel atomization, reduced engine power, and increased fuel consumption. Therefore, using the correct part number, 3393476, for your specific engine model is essential for maintaining the engine’s operational integrity.

Role of Part 3393476 Injector Fuel Supply Tube in Engine Systems

The Injector Fuel Supply Tube, identified by part number 3393476, is an integral component in the fuel delivery system of an engine. It is responsible for channeling pressurized fuel from the fuel rail to the individual fuel injectors. This ensures that each injector receives a consistent and regulated fuel supply, which is essential for precise fuel metering and efficient combustion.

In the context of fuel plumbing, the Injector Fuel Supply Tube connects to the fuel rail on one end and to the fuel injector on the other. The fuel rail, a pressurized conduit, distributes fuel to all injectors. The Injector Fuel Supply Tube acts as a direct link, minimizing fuel pressure drop and ensuring that the injectors operate within their specified parameters.

The interaction between the Injector Fuel Supply Tube and the fuel injectors is designed to maintain fuel pressure consistency. This is vital for the injectors’ ability to atomize fuel effectively, which in turn promotes better air-fuel mixture and combustion efficiency. The tube’s design also helps in reducing fuel leaks and maintaining system integrity under varying engine operating conditions.

Furthermore, the Injector Fuel Supply Tube plays a role in the overall durability and reliability of the fuel system. Its construction is typically robust to withstand high fuel pressures and temperatures, ensuring long-term performance. The tube is also designed to accommodate thermal expansion and contraction, which are common in dynamic engine environments.

Conclusion

In summary, the Injector Fuel Supply Tube (part 3393476) is a key element in the fuel delivery network, facilitating efficient and reliable fuel distribution to the injectors, and contributing to the engine’s overall performance and efficiency. Proper maintenance and installation of this part are crucial for ensuring the optimal operation of the fuel injection system.