3910885
Injector Fuel Supply Tube
Cummins®

Introduction

The Injector Fuel Supply Tube, identified by Part #3910885, is a component manufactured by Cummins, a well-established name in the automotive industry. This tube is integral to the fuel system of heavy-duty trucks, facilitating the efficient delivery of fuel from the tank to the injectors. Cummins is renowned for its commitment to producing high-quality components designed to enhance the performance and reliability of commercial vehicles ¹.

Function and Operation

The Injector Fuel Supply Tube operates as a conduit within the fuel system, responsible for transporting fuel from the tank to the injectors. It ensures a consistent and reliable supply of fuel, which is essential for the combustion process in the engine. The tube is designed to withstand the pressures and temperatures associated with fuel delivery, ensuring that fuel is delivered efficiently and without interruption ².

Purpose of the Injector Fuel Supply Tube

This Cummins part plays a specific role in the operation of a truck by ensuring that fuel is delivered to the injectors in a controlled and consistent manner. This contributes to the overall fuel efficiency and engine performance of the vehicle. By maintaining a steady fuel supply, the tube helps to optimize combustion, which can lead to improved engine performance and potentially increased fuel efficiency ³.

Key Features

The Injector Fuel Supply Tube is constructed from durable materials that are resistant to the corrosive effects of fuel. Its design includes features that enhance its functionality, such as reinforced connections to prevent leaks and a smooth interior to facilitate fuel flow. These characteristics contribute to the tube’s reliability and longevity within the fuel system.

Benefits

The advantages provided by the Injector Fuel Supply Tube include improved fuel delivery, which can lead to enhanced engine performance. A reliable fuel supply contributes to consistent combustion, potentially increasing fuel efficiency. Additionally, the tube’s durable construction and design features contribute to the overall reliability of the fuel system.

Installation and Compatibility

Proper installation of the Injector Fuel Supply Tube is crucial to ensure its effective operation within the fuel system. Specific procedures should be followed to guarantee that the tube is securely connected and properly positioned. Compatibility with various truck models should be considered to ensure optimal performance and integration within the existing fuel system.

Maintenance and Troubleshooting

Routine maintenance practices for the Injector Fuel Supply Tube include regular inspections for signs of wear, leaks, or blockages. Troubleshooting common issues, such as leaks or reduced fuel flow, may involve checking connections, inspecting for damage, and ensuring that the tube is free from obstructions. Adhering to manufacturer guidelines for maintenance can help to prolong the tube’s service life and maintain its performance.

Safety Considerations

When working with the Injector Fuel Supply Tube, it is important to observe safety protocols and precautions. This includes handling fuel with care to prevent spills and ensuring that all connections are secure to avoid leaks. Adherence to manufacturer guidelines for installation, maintenance, and operation is crucial to ensure safe and effective use of the component.

Cummins Overview

Cummins Inc. has a long-standing reputation in the automotive industry for producing high-quality components for commercial vehicles. The company’s history is marked by a commitment to innovation, quality, and customer satisfaction. Cummins’ products are designed to meet the demanding requirements of heavy-duty applications, ensuring reliability and performance in a variety of operating conditions ⁴.

Cummins Injector Fuel Supply Tube (Part 3910885) Compatibility

The Cummins Injector Fuel Supply Tube, identified by the part number 3910885, is a critical component in the fuel delivery system of several Cummins engine models. This part ensures the efficient and reliable transfer of fuel from the fuel pump to the injectors, maintaining the engine’s performance and longevity.

Engine Compatibility

• 4B3.9 Series

  • The 4B3.9 engine series is designed for heavy-duty applications, often found in industrial and commercial vehicles. The injector fuel supply tube is essential in this series, providing a durable and high-pressure-resistant connection that supports the engine’s demanding operational requirements.

• Cummins QSX Series

  • Within the Cummins QSX series, the injector fuel supply tube is integral to the fuel system’s integrity. This series is known for its robust design and high power output, making the reliability of the fuel supply tube crucial for maintaining engine performance.

• Cummins ISX Series

  • The ISX series engines, renowned for their power and efficiency, also utilize the injector fuel supply tube part 3910885. This part’s precision engineering ensures that the fuel delivery system can handle the high pressures and demands of these high-performance engines.

• Cummins M11 Series

  • The M11 series engines, often used in military and heavy-duty applications, benefit from the robust design of the injector fuel supply tube. This part’s ability to withstand extreme conditions is vital for the engine’s reliability in harsh environments.

• Cummins K19 Series

  • The K19 series engines, known for their versatility and durability, also incorporate the injector fuel supply tube part 3910885. This part’s design ensures that the fuel delivery system can operate efficiently under various conditions, supporting the engine’s performance across different applications.

Each of these engine series relies on the injector fuel supply tube to ensure that fuel is delivered to the injectors at the correct pressure and flow rate. This part’s compatibility across multiple Cummins engine models underscores its importance in maintaining the overall efficiency and reliability of the fuel system.

Role of Part 3910885 Injector Fuel Supply Tube in Engine Systems

The Injector Fuel Supply Tube, identified by part number 3910885, is an integral component in the fuel delivery system of an engine. Its primary function is to transport pressurized fuel from the fuel rail to the fuel injectors. This ensures a consistent and reliable fuel supply to each cylinder, which is essential for optimal engine performance.

Integration with Fuel System Components

1. Fuel Rail: The Injector Fuel Supply Tube is directly connected to the fuel rail, which is a distribution manifold that supplies fuel to each injector. The tube’s precise fit and secure connection to the fuel rail are vital for maintaining fuel pressure and preventing leaks.

2. Fuel Injectors: Each fuel injector is supplied with fuel through the Injector Fuel Supply Tube. The tube’s role is to deliver fuel at the correct pressure and volume, allowing the injectors to atomize the fuel efficiently for combustion.

3. Fuel Pump: While not directly connected, the fuel pump creates the pressure necessary for the Injector Fuel Supply Tube to function. The pump pressurizes the fuel in the fuel tank, which is then delivered to the fuel rail via the fuel lines.

4. Fuel Filter: Positioned upstream of the fuel rail, the fuel filter removes impurities from the fuel before it reaches the Injector Fuel Supply Tube. Clean fuel ensures that the tube and injectors operate without clogging or damage.

Interaction with Plumbing Components

1. Fuel Lines: The Injector Fuel Supply Tube is often part of a larger network of fuel lines that transport fuel from the tank to the engine. These lines must be compatible with the tube to ensure a seamless fuel delivery system.

2. Connectors and Fittings: Various connectors and fittings are used to join the Injector Fuel Supply Tube to other components. These must be correctly installed to maintain fuel pressure and prevent leaks.

3. Seals and Gaskets: To ensure a leak-free system, seals and gaskets are used at connection points. These components work in tandem with the Injector Fuel Supply Tube to maintain the integrity of the fuel system.

Conclusion

In summary, the Injector Fuel Supply Tube (part 3910885) plays a significant role in the fuel delivery system by ensuring that fuel is efficiently and reliably supplied to the injectors. Its integration with other fuel system components and plumbing elements is essential for the overall performance and reliability of the engine.