4331985
Injector Fuel Supply Tube
Cummins®

Introduction

The Cummins Injector Fuel Supply Tube, identified by part number 4331985, is a critical component in the fuel system of heavy-duty trucks. It ensures a consistent and reliable supply of fuel to the injectors, contributing to the overall performance and efficiency of the engine. This part is engineered to integrate seamlessly within the fuel delivery system.

Function and Operation

The Injector Fuel Supply Tube delivers fuel from the tank to the injectors, maintaining fuel pressure within the system. This is vital for the proper atomization of fuel in the combustion chamber. The tube’s design ensures a steady flow of fuel under varying engine loads and conditions, supporting optimal combustion and efficient engine performance ¹.

Key Features

This Cummins part is constructed with durable materials that resist the corrosive effects of fuel. Its design includes precise engineering to maintain fuel pressure and flow rates. The tube is built to withstand high pressures and temperatures within the fuel system, ensuring longevity and consistent performance ².

Benefits

Using the Cummins Injector Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring optimal pressure and flow conditions for fuel delivery to the injectors. This leads to enhanced engine performance and reduced maintenance requirements, increasing the longevity of the fuel system components ³.

Installation and Compatibility

Proper installation of the Injector Fuel Supply Tube is crucial for its effective operation. It is compatible with various Cummins engine models. Following specific guidelines ensures correct fitting and function within the fuel system. Attention to manufacturer recommendations during installation can help prevent issues and ensure the tube operates as designed.

Maintenance and Troubleshooting

Regular maintenance of the Injector Fuel Supply Tube is recommended to ensure optimal performance. This includes periodic inspection for wear or damage, cleaning to remove deposits that may affect fuel flow, and replacement according to the manufacturer’s guidelines. Troubleshooting common issues such as fuel leaks, pressure fluctuations, and performance degradation may involve checking the tube for blockages, ensuring proper connections, and verifying that it is free from damage.

Cummins Corporation

Cummins Inc. is a leader in the design and manufacture of diesel engines, natural gas engines, and powertrain-related components. With a history of innovation and a commitment to quality, Cummins has established a reputation for excellence in the automotive and industrial sectors. The company’s product offerings include a wide range of components designed to enhance the performance, efficiency, and reliability of engines across various applications. Cummins’ dedication to customer satisfaction is evident in its approach to designing and manufacturing components that meet the demanding requirements of modern engines.

Compatibility with QSK95 Engines

The Injector Fuel Supply Tube (4331985) is compatible with the following Cummins QSK95 engines:

• QSK95 CM2350 K111
• QSK95 CM2350 K113

These engines are part of the QSK95 series, known for their robust design and high performance in various industrial and power generation applications. The injector fuel supply tube is engineered to fit seamlessly within the architecture of these engines, ensuring a secure and leak-proof connection that is vital for the engine’s operation.

Importance of the Injector Fuel Supply Tube

The injector fuel supply tube plays a significant role in the overall functionality of the engine. It is responsible for:

• Maintaining Fuel Pressure: Ensuring that the fuel is delivered to the injectors at the correct pressure, which is essential for proper atomization and combustion.
• Preventing Leaks: Providing a secure connection that prevents fuel from leaking, which could lead to performance issues and potential safety hazards.
• Ensuring Reliability: Contributing to the engine’s reliability by maintaining a consistent fuel supply, which is critical for smooth operation and longevity.

By ensuring that the injector fuel supply tube is correctly installed and maintained, engine operators can help to prolong the life of their engines and ensure that they perform at their best.

Role of Part 4331985 Injector Fuel Supply Tube in Engine Systems

The Injector Fuel Supply Tube, identified by part number 4331985, is an integral component within the fuel delivery system of an engine. Its primary function is to facilitate the precise and efficient transfer of fuel from the fuel supply to the injectors. This ensures that the fuel is delivered at the correct pressure and flow rate, which is essential for optimal engine performance.

In the context of the fuel supply system, the Injector Fuel Supply Tube connects to the fuel rail, which distributes fuel to each injector. The tube’s design allows it to withstand the high pressures and temperatures within the fuel system, ensuring reliable operation. It works in conjunction with the fuel pump, which pressurizes the fuel, and the fuel filter, which removes impurities to prevent damage to the injectors.

The Injector Fuel Supply Tube also interfaces with the engine’s Electronic Control Unit (ECU), which monitors and adjusts the fuel delivery based on various engine parameters such as load, speed, and temperature. This integration ensures that the fuel supply is dynamically managed to meet the engine’s demands, enhancing both performance and efficiency.

Furthermore, the tube is part of the overall plumbing within the fuel system, which includes hoses, connectors, and fittings. These components work together to create a sealed and efficient pathway for fuel delivery, minimizing the risk of leaks and ensuring consistent fuel pressure.

Conclusion

The Cummins Injector Fuel Supply Tube (part 4331985) is a vital component in the fuel delivery system, ensuring that fuel is accurately and reliably supplied to the injectors. Its design and construction contribute to the engine’s overall performance and efficiency, making it an essential part of the fuel system.