4941699
Injector Fuel Supply Tube
Cummins®

Introduction

The Cummins Injector Fuel Supply Tube, identified by part number 4941699, is a component designed to facilitate the efficient delivery of fuel to the injectors in heavy-duty trucks. Its role is significant in ensuring the smooth operation of the engine by maintaining consistent fuel pressure and flow. This part is integral to the fuel system, contributing to the overall performance and reliability of the vehicle ¹.

Basic Concepts

Injector fuel supply tubes are fundamental components within the fuel system of diesel engines. They serve to transport fuel from the fuel rail to the injectors, ensuring that each injector receives the precise amount of fuel needed for combustion. The consistent delivery of fuel under pressure is vital for the engine’s performance, as it directly influences the combustion process and, consequently, the engine’s power output and efficiency ².

Purpose and Function

The Cummins Injector Fuel Supply Tube plays a role in the operation of a truck by delivering fuel to the injectors and maintaining consistent fuel pressure. This ensures that the injectors operate within their specified parameters, promoting efficient combustion and reducing the likelihood of engine knocking or misfires. The tube is designed to withstand the high pressures and temperatures within the fuel system, ensuring reliable fuel delivery under various operating conditions ³.

Key Features

The Cummins Injector Fuel Supply Tube is characterized by several key features that enhance its performance and durability. These include a robust construction that resists wear and corrosion, precise engineering to ensure accurate fuel delivery, and compatibility with a range of Cummins engines. The tube’s design also incorporates features that facilitate easy installation and maintenance, contributing to its overall effectiveness.

Benefits

Utilizing the Cummins Injector Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring that fuel is delivered to the injectors with minimal loss or leakage. This precise fuel delivery also enhances engine performance, allowing for more consistent power output and smoother operation. Additionally, the tube’s reliable operation under demanding conditions helps to maintain engine efficiency and longevity, reducing the need for frequent replacements or repairs ⁴.

Installation and Maintenance

Proper installation and maintenance of the Cummins Injector Fuel Supply Tube are crucial for ensuring optimal performance and longevity. Installation should follow manufacturer guidelines to ensure a secure fit and proper alignment with the fuel rail and injectors. Regular maintenance, including inspection for signs of wear, corrosion, or leaks, is recommended to identify and address potential issues before they lead to more significant problems. Following these guidelines can help maintain the tube’s effectiveness and contribute to the overall reliability of the fuel system.

Common Issues and Troubleshooting

Common issues with the Injector Fuel Supply Tube may include leaks or blockages, which can affect fuel delivery and engine performance. Troubleshooting these problems involves inspecting the tube for visible signs of damage or wear, checking connections for tightness, and ensuring that the fuel system is free of contaminants that could cause blockages. Addressing these issues promptly can help maintain the efficiency and reliability of the fuel system.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and related technologies. With a history spanning over a century, Cummins has established a reputation for quality, innovation, and reliability within the automotive and heavy-duty truck industries. The company’s commitment to excellence is reflected in its product offerings, which are designed to meet the demanding requirements of various applications.

Compatibility

The Cummins Injector Fuel Supply Tube, identified by part number 4941699, is designed to ensure the efficient and reliable transfer of fuel from the fuel supply system to the injectors. This part is compatible with various Cummins engines, including the ISF3.8 CM2220 AN engine, known for its robust performance and reliability in various industrial and commercial applications. The tube’s design ensures a precise fit, maintaining the integrity of the fuel delivery system and contributing to the engine’s overall efficiency and longevity.

Integration with Engine Components

The Injector Fuel Supply Tube is an integral component in the fuel delivery system of an engine. It is responsible for transporting pressurized fuel from the fuel rail to the injector. This part ensures a consistent and reliable fuel supply, which is essential for the injector to function correctly.

1. Cylinder Head: The injector fuel supply tube is mounted on the cylinder head, where it interfaces with the fuel rail. This positioning allows for efficient distribution of fuel to each injector.
2. Injector: Directly connected to the injector, the fuel supply tube delivers fuel under pressure. This pressurized fuel is then atomized by the injector into the combustion chamber, ensuring optimal air-fuel mixture for combustion.
3. Injector Plumbing: Part 4941699 is a key element in the injector plumbing system. It works in conjunction with other components such as fuel lines and fittings to maintain the integrity of the fuel supply system.
4. Connecting Rod and Piston: Although not directly connected, the reliable fuel delivery provided by the injector fuel supply tube influences the performance of the connecting rod and piston. Consistent fuel supply leads to stable combustion, which in turn affects the movement and efficiency of these components.
5. Performance: The role of part 4941699 in ensuring a steady fuel supply directly impacts engine performance. Efficient fuel delivery results in better engine responsiveness, power output, and overall performance.

Conclusion

The Cummins Injector Fuel Supply Tube (part number 4941699) is a critical component in the fuel delivery system of diesel engines. Its role in maintaining consistent fuel pressure and flow ensures efficient engine operation and performance. Proper installation, maintenance, and addressing common issues promptly are essential for maximizing the effectiveness and longevity of this Cummins part.