4980581
Injector Fuel Supply Tube
Cummins®

Introduction

The Cummins Injector Fuel Supply Tube is a critical component in the fuel system of heavy-duty trucks, ensuring efficient engine performance by facilitating the delivery of fuel from the fuel rail to the injectors. This part is designed to maintain precise fuel metering, which is essential for the overall operation and efficiency of the engine ¹.

Function and Operation

The Injector Fuel Supply Tube operates within the fuel injection system by delivering fuel from the fuel rail to the injectors. It ensures that fuel is supplied consistently and accurately to each injector, which is essential for maintaining engine performance. The tube’s design allows for precise fuel metering, ensuring that the correct amount of fuel is delivered at the right time, which contributes to efficient combustion and engine operation ².

Key Features

The Cummins Injector Fuel Supply Tube is characterized by its robust design and the materials used in its construction. It is typically made from high-quality materials that offer durability and resistance to the high pressures and temperatures within the fuel system. The tube’s design includes features that enhance its performance, such as smooth internal surfaces to minimize fuel flow resistance and precise fittings to ensure a secure connection to the fuel rail and injectors ³.

Benefits

The Cummins Injector Fuel Supply Tube provides several advantages, including improved fuel efficiency, enhanced engine performance, and reduced emissions. By ensuring precise fuel delivery, the tube contributes to more efficient combustion, which can lead to better fuel economy. Additionally, the consistent fuel supply helps maintain engine performance under various operating conditions. Reduced emissions are another benefit, as precise fuel metering can lead to cleaner combustion ⁴.

Installation and Compatibility

Proper installation of the Cummins Injector Fuel Supply Tube is important to ensure optimal performance. Installation procedures may vary depending on the specific engine model and fuel system configuration. It is important to follow manufacturer guidelines to ensure correct fitting and sealing. The tube is compatible with various Cummins engine models, and it is designed to integrate seamlessly with the existing fuel system components ⁵.

Maintenance and Troubleshooting

Routine maintenance of the Cummins Injector Fuel Supply Tube is important to ensure its longevity and performance. This may include regular inspections for signs of wear or damage, and ensuring that all connections are secure and free from leaks. Common issues such as fuel leaks or blockages can often be addressed by checking the fittings and connections, and ensuring that the tube is free from obstructions. If issues persist, it may be necessary to replace the tube or seek professional assistance ⁶.

Safety Considerations

When working with the Cummins Injector Fuel Supply Tube, it is important to follow safety precautions and guidelines. This includes proper handling procedures to avoid fuel spills or exposure to high-pressure fuel. It is also important to be aware of the potential hazards associated with fuel system components, such as the risk of fire or explosion if fuel is ignited. Always ensure that the engine is off and the fuel system is depressurized before performing any maintenance or repairs ⁷.

Cummins Overview

Cummins Inc. is a well-established company in the automotive industry, known for its commitment to innovation and quality in manufacturing diesel engines and related components. With a history of producing reliable and high-performance engines, Cummins has built a reputation for excellence. The company’s focus on research and development ensures that its products, including the Injector Fuel Supply Tube, meet the demanding requirements of heavy-duty applications ⁸.

Compatibility

The Injector Fuel Supply Tube (4980581) is compatible with the following Cummins engine models:

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

Grouping by Engine Series:

ISC Series:

• ISC CM2150
• ISC8.3 CM2250

ISL Series:

• ISL CM2150
• ISL9 CM2250

QSC/QSL Series:

• QSC9 CM2250/QSL9 CM2250
• QSL9 CM2250

Each of these engines relies on the Injector Fuel Supply Tube to maintain the integrity of the fuel delivery system, ensuring that fuel is delivered to the injectors at the correct pressure and flow rate. This part is essential for the proper functioning of the engine, as it directly impacts fuel efficiency and overall performance ⁹.

Role in Engine Systems

The Injector Fuel Supply Tube, identified by part number 4980581, is an integral component within the fuel delivery architecture of modern engine systems. Its primary function is to facilitate the precise and efficient transfer of fuel from the high-pressure fuel rail to the individual injectors. This part is a key element in the injector plumbing and injector supply plumbing networks, ensuring that each injector receives a consistent and regulated fuel supply necessary for optimal combustion.

In the context of the XPI JV (X-Press Injection Joint Venture) components, the Injector Fuel Supply Tube plays a significant role. The XPI JV system, particularly in Scania HD (Heavy Duty) engines, relies on this tube to maintain the integrity and performance of the fuel delivery process. The tube is designed to withstand the high pressures and temperatures characteristic of these advanced fuel systems, ensuring reliable operation under demanding conditions.

The integration of the Injector Fuel Supply Tube within the plumbing system is meticulously engineered to minimize fuel leakage and maximize fuel efficiency. It connects directly to the injector, forming a sealed pathway that prevents fuel contamination and ensures that the fuel delivered is clean and pressurized to the specifications required by the engine’s fuel injection system.

Furthermore, the tube’s design contributes to the overall efficiency of the XPI JV system by reducing the likelihood of fuel cavitation and ensuring a stable fuel flow. This stability is essential for the precise timing and quantity of fuel injection, directly impacting the engine’s performance, emissions, and fuel economy ¹⁰.

Conclusion

The Cummins Injector Fuel Supply Tube (part 4980581) is a vital component in the fuel delivery system of engines equipped with XPI JV technology. Its role in maintaining a consistent and pressurized fuel supply to the injectors is fundamental to the efficient and effective operation of the engine. Proper installation, maintenance, and adherence to safety guidelines are essential to ensure the longevity and performance of this part.