5481949
Injector Fuel Supply Tube
Cummins®

The Cummins Injector Fuel Supply Tube, part number 5481949, is a vital component in the fuel system of heavy-duty trucks. It ensures the efficient delivery of fuel from the tank to the injectors, which is essential for optimal engine performance and efficiency.

Basic Concepts of Injector Fuel Supply Tubes

An Injector Fuel Supply Tube is a conduit that carries fuel from the tank to the injectors, ensuring a consistent and reliable fuel pathway for combustion. This part is crucial for maintaining the correct fuel pressure and volume necessary for efficient engine operation ¹.

Purpose and Role in Truck Operation

The Cummins Injector Fuel Supply Tube ensures that fuel is transported from the tank to the injectors under appropriate conditions. This steady fuel supply is vital for smooth engine operation and achieving the desired power output ².

Key Features

This Cummins part is designed with robust construction to withstand fuel system pressures and temperatures. It is made from materials resistant to corrosion and wear, and its design may include features that reduce the risk of fuel leaks and enhance the reliability of the fuel delivery system ³.

Benefits

Using the Cummins Injector Fuel Supply Tube can lead to improved fuel efficiency, enhanced engine performance through consistent fuel delivery, and increased reliability of the fuel supply system.

Installation and Compatibility

Proper installation of this part is crucial for its correct fit within the fuel system. It must be compatible with various Cummins engine models, designed to work with the specific fuel system of the engine ⁴.

Maintenance and Troubleshooting

Routine maintenance involves checking for wear, corrosion, or leaks. Common issues include blockages or loose connections. Troubleshooting may involve inspecting the tube for damage, ensuring secure connections, and replacing the tube if significant wear or failure is detected.

Performance Enhancements

Advancements in tube technology may include improved materials for greater resistance to harsh conditions and designs that enhance fuel flow and reduce leaks, contributing to overall engine performance.

Safety Considerations

Handling and installing the Cummins Injector Fuel Supply Tube requires following safety protocols, including wearing personal protective equipment, ensuring the fuel system is depressurized, and adhering to manufacturer guidelines for installation and maintenance.

Cummins: A Brief Overview

Cummins Inc. is renowned for its high-quality components for heavy-duty trucks, with a history of innovation and reliability. The company’s commitment to quality and performance is evident in its wide range of products, including the Cummins Injector Fuel Supply Tube.

Cummins Injector Fuel Supply Tube (Part 5481949)

This part is essential for the fuel delivery system in several Cummins engine models, ensuring efficient and accurate fuel delivery to the injectors for optimal engine performance.

Compatible Engines

• ISC CM2150
• ISC8.3 CM2250
• ISL CM2150
• ISL9 CM2250
• QSC9 CM2250/QSL9 CM2250
• QSL9 CM2250
• QSL9 CM2350 L102

Role of Part 5481949 Injector Fuel Supply Tube in Engine Systems

The Injector Fuel Supply Tube is integral to the efficient operation of fuel injection systems, particularly within the XPI JV System used in Cummins MR engines. It facilitates the precise delivery of fuel from the high-pressure pump to the injectors, ensuring optimal fuel distribution and combustion.

Integration with Injector Plumbing

Within the injector plumbing system, the Injector Fuel Supply Tube carries pressurized fuel from the common rail to each injector, minimizing fuel loss and maintaining consistent pressure, which is essential for effective injector operation.

Function in Injector Supply Plumbing

In the injector supply plumbing, the Injector Fuel Supply Tube maintains the integrity of the fuel path, withstanding high pressures and temperatures to ensure fuel is delivered without degradation in quality or pressure drop.

Contribution to Overall Plumbing System

As part of the broader plumbing system, the Injector Fuel Supply Tube interfaces with various components to manage fuel flow dynamically, ensuring the engine operates smoothly under a wide range of conditions.

Interaction with Injectors

Directly connected to the injectors, the Injector Fuel Supply Tube ensures each injector receives an equal and precise amount of fuel, promoting balanced combustion across all cylinders and contributing to engine efficiency, performance, and longevity.

Role in XPI JV System Cummins MR

In the XPI JV System specific to Cummins MR engines, the Injector Fuel Supply Tube supports the system’s high-pressure fuel delivery capabilities, working in concert with the high-pressure pump, rail pressure sensor, and injectors for optimal combustion.

Conclusion

The Cummins Injector Fuel Supply Tube (Part 5481949) is a critical component in the fuel delivery system of Cummins engines, ensuring efficient and accurate fuel delivery to the injectors. Its robust design, compatibility with various engine models, and role in maintaining optimal engine performance make it an essential part of the fuel system.