4393794
Diesel Exhaust Fluid Tank
Cummins®

The Cummins 4393794 Diesel Exhaust Fluid Tank is a component designed for use in heavy-duty trucks. Its purpose is to store Diesel Exhaust Fluid (DEF), which is used in the Selective Catalytic Reduction (SCR) system to reduce nitrogen oxides (NOx) emissions. This part plays a significant role in the operation of heavy-duty trucks by ensuring compliance with environmental regulations and enhancing engine performance.

Basic Concepts of Diesel Exhaust Fluid Tanks

A Diesel Exhaust Fluid (DEF) Tank is a reservoir that holds DEF, a solution composed primarily of deionized water and urea. Within the SCR system, DEF is injected into the exhaust stream where it decomposes into ammonia and carbon dioxide. The ammonia then reacts with NOx in the presence of a catalyst to form nitrogen and water vapor, effectively reducing harmful emissions. The chemical composition of DEF is crucial for its effectiveness in the SCR process ¹.

Purpose of the Cummins 4393794 Diesel Exhaust Fluid Tank

The Cummins 4393794 Diesel Exhaust Fluid Tank serves to store DEF, which is integral to the SCR system’s function in reducing NOx emissions. By providing a consistent supply of DEF, this Cummins part ensures that the SCR system can operate efficiently, thereby minimizing the environmental impact of heavy-duty truck emissions. Its role is vital in maintaining the truck’s compliance with emission standards and optimizing engine performance.

Key Features

This Cummins part is constructed from materials that ensure durability and resistance to corrosion. Its design includes features that enhance performance, such as a robust construction that can withstand the demands of heavy-duty applications. The tank’s capacity is tailored to meet the needs of various truck models, ensuring that it can accommodate the DEF requirements for effective SCR system operation.

Benefits of Using the Cummins 4393794 Diesel Exhaust Fluid Tank

Utilizing the Cummins 4393794 Diesel Exhaust Fluid Tank offers several benefits. It contributes to improved emission control by ensuring a reliable supply of DEF to the SCR system. This, in turn, helps in meeting environmental regulations and can potentially increase engine efficiency. The tank’s design and construction also contribute to its longevity and performance under demanding conditions.

Installation Considerations

Proper installation of the Cummins 4393794 Diesel Exhaust Fluid Tank is important for its effective operation. Considerations include ensuring compatibility with the specific truck model and proper integration with the SCR system. Following manufacturer guidelines during installation helps in achieving optimal performance and durability of the tank.

Troubleshooting Common Issues

Common issues with the Cummins 4393794 Diesel Exhaust Fluid Tank may include leaks, sensor malfunctions, and contamination. Addressing these issues promptly is important for maintaining the efficiency of the SCR system. Troubleshooting steps may involve inspecting connections for leaks, checking sensor readings for accuracy, and ensuring the DEF is free from contaminants.

Maintenance Tips

Regular maintenance of the Cummins 4393794 Diesel Exhaust Fluid Tank is important for its longevity and optimal performance. This includes periodic inspections for signs of wear or damage, ensuring the DEF is of high quality, and following recommended inspection intervals. Proper maintenance helps in preventing issues and ensures the SCR system operates efficiently.

Environmental Impact

The use of the Cummins 4393794 Diesel Exhaust Fluid Tank contributes to reducing the environmental impact of heavy-duty trucks by enabling effective NOx emission reductions through the SCR system. This plays a role in meeting regulatory standards and promoting cleaner air quality. The tank’s efficient operation is important in achieving these environmental benefits.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel engines and emissions control technologies. With a history of innovation and a commitment to sustainability, Cummins continues to develop products that meet the evolving needs of the transportation industry while addressing environmental concerns.

Cummins Diesel Exhaust Fluid Tank 4393794 Compatibility

The Cummins Diesel Exhaust Fluid (DEF) Tank part number 4393794 is designed to be compatible with a range of Cummins engines. This part is essential for the Selective Catalytic Reduction (SCR) system, which helps reduce nitrogen oxide emissions in diesel engines. Here are the Cummins engines that this DEF tank fits:

• F3.8 CM2350
• F128C
• QSB6.7 CM2350 B105
• QSL9 CM2350 L102
• QSX15 CM2350 X105

These engines are part of Cummins’ diverse lineup, each tailored for specific applications, from industrial to agricultural use. The DEF tank is engineered to integrate seamlessly with the SCR system in these engines, ensuring optimal performance and compliance with emission standards.

Conclusion

The Diesel Exhaust Fluid Tank, specifically part 4393794, is an integral component in modern diesel engine systems, designed to enhance emissions control. This tank stores Diesel Exhaust Fluid (DEF), a urea-based solution that is injected into the exhaust stream to facilitate the Selective Catalytic Reduction (SCR) process.

When DEF is introduced into the exhaust system, it decomposes into ammonia and carbon dioxide. The ammonia then reacts with nitrogen oxides (NOx) in the presence of a catalyst, converting them into nitrogen and water vapor. This process significantly reduces harmful emissions, aligning with stringent environmental regulations ².

The DEF tank is connected to the SCR system via a series of components, including the DEF pump, injector, and associated sensors. The DEF pump draws fluid from the tank and delivers it to the injector, which sprays it into the exhaust stream at precise intervals. Sensors monitor the DEF level and quality, ensuring optimal performance and alerting the driver if maintenance is required.

In summary, the Diesel Exhaust Fluid Tank (part 4393794) plays a vital role in the overall emissions control strategy of diesel engines, working in concert with the DEF pump, injector, and sensors to maintain efficient and compliant operation.