4988147
Injector Fuel Supply Tube
Cummins®

Introduction

The Fuel Injector Supply Tube 4988147, a component designed by Cummins, is essential for the efficient delivery of fuel to the injectors in heavy-duty trucks. This part is critical to the operation of the fuel system, ensuring that fuel is distributed evenly and under the correct pressure to each injector. Its role is significant in maintaining the performance and reliability of the engine ¹.

Basic Concepts of Fuel Injector Supply Tubes

A Fuel Injector Supply Tube is a conduit within the fuel system that carries fuel from the fuel rail to the individual injectors. Its function is to provide a consistent and regulated flow of fuel, which is vital for the precise operation of fuel injectors. The performance of the engine is directly influenced by the efficiency of the fuel delivery system, as it affects combustion and, consequently, power output and fuel economy ².

Purpose and Role in Truck Operation

The 4988147 Fuel Injector Supply Tube is specifically engineered to work within Cummins engines, ensuring that fuel is delivered to the injectors with the appropriate pressure and flow rate. This component plays a role in the fuel delivery system by maintaining a steady supply of fuel, which is vital for the injectors to operate correctly and deliver fuel into the combustion chamber at the precise moment ³.

Key Features

The 4988147 is constructed from high-quality materials that are resistant to the corrosive effects of diesel fuel. Its design includes features that enhance durability and performance, such as reinforced connections and a smooth interior to reduce flow resistance. These characteristics contribute to the tube’s ability to withstand the high pressures and temperatures within the fuel system.

Benefits

Utilizing the 4988147 can lead to improved fuel efficiency, as it ensures that fuel is delivered to the injectors without unnecessary pressure drops or leaks. This consistent fuel delivery supports enhanced engine performance by allowing for more precise fuel injection timing and quantity. Additionally, the reliability of the tube contributes to the overall dependability of the truck’s fuel system.

Installation Process

Installing the 4988147 involves several steps to ensure it is properly fitted and functions as intended. Preparatory steps include cleaning the fuel system and inspecting the fuel rail and injector connections. The installation requires specific tools to secure the tube in place and to check for proper alignment and sealing. Best practices include verifying the tube’s compatibility with the engine model and following the manufacturer’s guidelines for torque specifications.

Troubleshooting Common Issues

Common issues with the 4988147 may include leaks, blockages, or problems with fuel delivery. Troubleshooting these issues involves inspecting the tube for signs of wear or damage, checking connections for tightness, and ensuring that there are no obstructions within the tube. Solutions may range from tightening connections to replacing the tube if it is found to be faulty.

Maintenance Tips

To ensure the longevity and optimal performance of the 4988147, regular maintenance is recommended. This includes periodic inspection for signs of wear or corrosion, cleaning the tube to remove any deposits that may affect fuel flow, and following the manufacturer’s guidelines for replacement intervals. Proper maintenance helps prevent issues and ensures the fuel system operates efficiently.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a commitment to quality, Cummins has established a strong reputation in the commercial truck industry. The company’s product range includes a variety of engine components, each designed to meet the demanding requirements of heavy-duty applications. Cummins’ dedication to excellence is reflected in the performance and reliability of its engine components, including the 4988147.

Cummins Fuel Injector Supply Tube 4988147 Compatibility

The Cummins Fuel Injector Supply Tube, part number 4988147, 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 fuel injectors, which is essential for maintaining optimal engine performance and fuel efficiency.

Engine Compatibility

• 4B3.9 Series

  • The 4988147 is specifically designed to fit seamlessly with the 4B3.9 engine series. This engine series is known for its robust design and reliability, making it a popular choice in various industrial and commercial applications. The supply tube’s precise fit ensures that the fuel delivery system operates smoothly, reducing the risk of fuel leaks and ensuring consistent engine performance.

• Other Cummins Engines

  • While the primary focus here is on the 4B3.9 series, the 4988147 is also compatible with other Cummins engines. This part’s design allows it to fit various engine models, ensuring that the fuel injectors receive the necessary fuel supply. The compatibility extends to engines that share similar fuel delivery system configurations, making it a versatile component for multiple engine types.

Importance of the Fuel Injector Supply Tube

The 4988147 plays a crucial role in the engine’s fuel delivery system. It ensures that fuel is delivered to the injectors at the correct pressure and flow rate, which is essential for efficient combustion. This part’s design and material quality are critical to maintaining the integrity of the fuel delivery system, preventing leaks, and ensuring that the engine operates at peak performance.

Installation and Maintenance

Proper installation of the 4988147 is essential to ensure the engine’s optimal performance. Technicians should follow the manufacturer’s guidelines for installation, ensuring that all connections are secure and that there are no leaks in the system. Regular maintenance checks should be performed to inspect the supply tube for any signs of wear or damage, ensuring that it continues to function correctly and prolonging the engine’s lifespan.

Role of Part 4988147 Fuel Injector Supply Tube in Engine Systems

The 4988147 is an integral component in the fuel delivery system of an engine. It facilitates the transfer of fuel from the fuel rail to the individual fuel injectors. This tube ensures a consistent and regulated flow of fuel, which is essential for the precise operation of the fuel injectors.

In the context of the fuel system, the supply tube connects to the fuel rail, which is a distribution manifold that supplies fuel to each injector. The fuel rail maintains a constant pressure, and the supply tube extends from this rail to each injector, ensuring that each cylinder receives the correct amount of fuel at the right time.

The fuel injectors, upon receiving an electrical signal from the engine control unit (ECU), open to spray atomized fuel into the combustion chamber. The supply tube’s role is to deliver fuel under pressure to the injectors, allowing for efficient fuel atomization and combustion.

Moreover, the supply tube is part of the overall plumbing of the fuel system. It must be securely fitted to prevent leaks, which could lead to fuel wastage, decreased engine performance, and potential safety hazards. The design of the tube often includes features such as O-rings or gaskets to ensure a tight seal at connection points.

In summary, the 4988147 is a key element in the fuel delivery network, working in concert with the fuel rail, injectors, and ECU to maintain optimal engine performance and fuel efficiency.

Conclusion

The 4988147 Fuel Injector Supply Tube is a vital component in the fuel delivery system of Cummins engines, ensuring efficient and accurate fuel delivery to the injectors. Its role in maintaining engine performance and fuel efficiency cannot be overstated. Proper installation, regular maintenance, and understanding its compatibility with various engine models are essential for optimal operation. Cummins’ commitment to quality and innovation is evident in the design and functionality of this part, contributing to the reliability and performance of heavy-duty trucks.