3093685
Injector Fuel Supply Tube
Cummins®

The Fuel Injector Supply Tube 3093685 by Cummins is a component designed to facilitate the delivery of fuel within the fuel system of heavy-duty trucks. Its role is integral to ensuring that fuel is efficiently and reliably supplied to the injectors, which in turn contributes to the overall performance and efficiency of the engine.

Basic Concepts of Fuel Injector Supply Tubes

A Fuel Injector Supply Tube is a conduit that transports fuel from the fuel rail to the individual injectors. This tube plays a role in maintaining consistent fuel pressure and flow, which are vital for the precise operation of fuel injectors. The efficiency of this component directly influences the engine’s performance, fuel economy, and emissions ¹.

Purpose of the 3093685 Fuel Injector Supply Tube

The 3093685 Fuel Injector Supply Tube is specifically engineered to deliver fuel from the fuel rail to the injectors in a heavy-duty truck. This component ensures that each injector receives a consistent and adequate supply of fuel, which is necessary for optimal combustion and engine performance. By maintaining proper fuel delivery, the tube contributes to the engine’s efficiency and reliability ².

Key Features

The 3093685 Fuel Injector Supply Tube is constructed from high-quality materials that offer durability and resistance to the harsh conditions within a diesel engine. Its design includes precise fittings and connections to ensure a secure and leak-free installation. Additionally, the tube may feature reinforced sections to withstand high fuel pressures and vibrations common in heavy-duty applications ³.

Benefits

Utilizing the 3093685 Fuel Injector Supply Tube offers several advantages. It enhances fuel delivery by providing a reliable pathway for fuel to reach the injectors, which can lead to improved engine performance. The tube’s robust construction contributes to increased reliability and longevity, reducing the likelihood of fuel system failures. Moreover, consistent fuel delivery aids in maintaining efficient combustion, which can result in better fuel economy and reduced emissions.

Installation Process

Installing the 3093685 Fuel Injector Supply Tube requires careful attention to detail to ensure proper fitting and function. The process involves disconnecting the old tube, cleaning the fuel rail and injector ports, and then attaching the new tube using the appropriate tools. It is important to follow manufacturer guidelines to avoid damage and ensure a secure connection. Torque specifications should be adhered to during installation to prevent leaks and ensure optimal performance.

Common Issues and Troubleshooting

Common issues with the 3093685 Fuel Injector Supply Tube may include leaks, blockages, or damage due to wear and tear. Troubleshooting these problems involves inspecting the tube for visible signs of damage, checking connections for tightness, and ensuring there are no obstructions within the tube. If a leak is detected, the tube should be replaced to prevent fuel loss and potential engine performance issues.

Maintenance Tips

Regular maintenance of the 3093685 Fuel Injector Supply Tube is important for ensuring its longevity and performance. This includes periodic inspection for signs of wear, corrosion, or damage. Cleaning the tube and its connections can prevent buildup that may obstruct fuel flow. Additionally, following the manufacturer’s recommended service intervals for replacement can help maintain optimal engine performance.

Compatibility and Applications

The 3093685 Fuel Injector Supply Tube is designed for use in specific Cummins engine models and is commonly applied in various heavy-duty truck configurations. Its compatibility ensures that it meets the demanding requirements of these applications, providing reliable fuel delivery in a range of operating conditions.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality, innovation, and reliability in the heavy-duty truck industry. The company’s product range includes a variety of engines and components that are engineered to deliver performance, efficiency, and durability in demanding applications.

Cummins Fuel Injector Supply Tube 3093685 Compatibility

The Cummins Fuel Injector Supply Tube part number 3093685 is designed to fit seamlessly with several engine models, ensuring optimal fuel delivery and engine performance. This part is crucial for maintaining the integrity of the fuel system, providing a reliable conduit for fuel from the supply line to the injectors.

QST30 CM552 Engines

The 3093685 Fuel Injector Supply Tube is specifically engineered to fit the QST30 CM552 engines. This compatibility ensures that the fuel supply remains uninterrupted, which is vital for the engine’s efficiency and longevity. The design of this part guarantees a precise fit, minimizing the risk of leaks and ensuring that the fuel injectors receive the correct amount of fuel at the right pressure.

Group Compatibility

In addition to the QST30 CM552 engines, the 3093685 Fuel Injector Supply Tube is also compatible with a broader range of Cummins engines. This part is designed to meet the stringent requirements of various engine models, providing a reliable solution for maintaining the fuel system’s integrity across different engine types. The compatibility extends to engines that share similar fuel system architectures, ensuring that the supply tube fits perfectly and functions as intended.

By ensuring that the 3093685 Fuel Injector Supply Tube fits with these engines, Cummins maintains its commitment to quality and reliability, providing engine owners and technicians with a dependable part that enhances engine performance and durability.

Role of Part 3093685 Fuel Injector Supply Tube in Engine Systems

The Fuel Injector Supply Tube, identified by part number 3093685, is an essential component in the fuel delivery system of an engine. Its primary function is to transport fuel from the fuel rail to the individual fuel injectors. This ensures a consistent and regulated supply of fuel, which is vital for the injectors to operate efficiently.

Integration with Fuel Rail

The Fuel Injector Supply Tube connects directly to the fuel rail, which is a pressurized manifold that distributes fuel to each injector. The tube’s design allows it to fit securely into the fuel rail, maintaining a sealed connection that prevents fuel leaks and ensures that the fuel pressure remains consistent across all injectors.

Interaction with Fuel Injectors

Each fuel injector is supplied with fuel through the Fuel Injector Supply Tube. The tube’s precise diameter and smooth interior help maintain fuel flow efficiency, reducing the likelihood of fuel turbulence or pressure drops. This consistent fuel delivery is essential for the injectors to atomize the fuel properly, leading to better combustion and overall engine performance.

Contribution to Engine Performance

The performance of an engine is significantly influenced by the efficiency of its fuel delivery system. The Fuel Injector Supply Tube plays a key role in this by ensuring that each injector receives the correct amount of fuel at the right pressure. This consistency is particularly important in high-performance engines where precise fuel delivery can make a noticeable difference in power output and fuel efficiency.

Role in Performance Parts

When upgrading to performance parts, the Fuel Injector Supply Tube may need to be replaced or upgraded to match the increased fuel flow requirements of high-performance injectors. A higher-flow supply tube can handle the increased volume of fuel, ensuring that the injectors receive adequate fuel even under demanding conditions. This upgrade is often part of a comprehensive performance enhancement package that includes high-flow fuel pumps, larger injectors, and upgraded fuel rails.

Conclusion

In summary, the Fuel Injector Supply Tube (part 3093685) is a vital component in the fuel delivery system, ensuring that fuel is consistently and efficiently supplied to each injector. Its integration with the fuel rail and interaction with fuel injectors are fundamental to maintaining engine performance, especially in systems that have been upgraded with performance parts.