4353381
Diesel Exhaust Fluid Tank
Cummins®

The Diesel Exhaust Fluid Tank (Part #4353381) by Cummins is a component designed for commercial trucks. It serves a specific role in the vehicle’s emissions control system, contributing to the overall operation and efficiency of the truck. This tank is integral to the Selective Catalytic Reduction (SCR) system, which is a technology used to reduce nitrogen oxides (NOx) emissions from diesel engines ¹.

Basic Concepts of Diesel Exhaust Fluid Tanks

A Diesel Exhaust Fluid Tank is a reservoir that stores Diesel Exhaust Fluid (DEF), a solution of urea and deionized water. This fluid is injected into the exhaust stream where it decomposes into ammonia and carbon dioxide. The ammonia then reacts with NOx in the Selective Catalytic Reduction (SCR) catalyst, converting them into nitrogen and water vapor, which are less harmful to the environment ². The DEF tank ensures a consistent supply of fluid to the SCR system, playing a key role in the emission reduction process.

Purpose and Function

This Cummins part is designed to store and supply DEF to the SCR system in commercial trucks. Its function is to maintain an adequate level of DEF, ensuring the SCR system operates effectively. By providing the necessary fluid, the tank contributes to the reduction of NOx emissions, helping the vehicle meet environmental regulations.

Key Features

The Diesel Exhaust Fluid Tank is constructed from materials that offer durability and resistance to the corrosive nature of DEF. It has a specific capacity designed to meet the demands of commercial truck operations. The tank’s design includes features that enhance its durability and efficiency, such as robust connections and a layout that minimizes the risk of leaks. Cummins’ design may incorporate unique attributes that further improve the tank’s performance and integration within the truck’s system.

Benefits

Using this Cummins part offers several advantages. It contributes to improved emission control, helping trucks comply with environmental regulations. The efficient operation of the SCR system can also enhance engine performance. Additionally, by reducing emissions, fleet operators may see potential cost savings related to lower environmental impact and compliance costs.

Installation and Integration

Proper installation of the Diesel Exhaust Fluid Tank is crucial for its effective operation. It should be integrated into the truck’s exhaust system according to the manufacturer’s guidelines. This includes ensuring secure connections, correct positioning, and compatibility with the truck’s SCR system. Specific requirements or considerations may apply, depending on the truck model and existing exhaust system configuration.

Maintenance and Care

Routine maintenance of the Diesel Exhaust Fluid Tank is important for its longevity and efficient operation. This includes regular inspections for leaks, contamination, or damage. Cleaning guidelines should be followed to prevent the buildup of contaminants that could affect the SCR system’s performance. Adhering to best practices for maintenance can prolong the tank’s lifespan and ensure consistent emission reduction.

Troubleshooting Common Issues

Common issues with the Diesel Exhaust Fluid Tank may include leaks, contamination of the DEF, or sensor malfunctions. Troubleshooting these issues involves inspecting the tank and its connections for signs of damage or wear, ensuring the DEF is free from contaminants, and checking the sensors for proper operation. Solutions may range from simple cleaning or tightening of connections to more complex repairs or replacements, depending on the issue identified.

Environmental Impact

The use of the Diesel Exhaust Fluid Tank plays a role in reducing the environmental impact of commercial trucks by facilitating the SCR system’s function in lowering NOx emissions. This contributes to cleaner air quality and helps mitigate the effects of diesel exhaust on the environment. The tank’s efficient operation is a component in the broader effort to reduce the carbon footprint of transportation ³.

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 of innovation and a commitment to emissions control technologies, Cummins plays a significant role in the commercial truck industry. The company’s product range includes a variety of components and systems designed to enhance the performance, efficiency, and environmental compliance of commercial vehicles.

Cummins Diesel Exhaust Fluid Tank (Part 4353381) Compatibility

The Cummins Diesel Exhaust Fluid (DEF) Tank, part number 4353381, is designed to be compatible with a range of Cummins engines. This part is crucial for the Selective Catalytic Reduction (SCR) system, which helps reduce nitrogen oxide emissions in diesel engines.

Compatible Engines

• F3.8 CM2350 F128C
• QSB6.7 CM2350 B105
• QSF3.8 CM2350 F107
• QSG12/X12 CM2350 G110
• QSL9 CM2350 L102
• QSX15 CM2350 X105

The DEF tank is engineered to fit seamlessly with the listed engines, ensuring optimal performance and reliability. This compatibility extends across various engine models, including those with different configurations and power outputs.

Grouping of Engines

The engines listed can be grouped based on their power output and application:

• Smaller Engines:

  • F3.8 CM2350 F128C
  • QSF3.8 CM2350 F107

• Medium Engines:

  • QSB6.7 CM2350 B105
  • QSL9 CM2350 L102

• Larger Engines:

  • QSG12/X12 CM2350 G110
  • QSX15 CM2350 X105

Each group represents engines that share similar characteristics and are used in various applications, from compact machinery to heavy-duty vehicles. The DEF tank is designed to integrate smoothly with these engines, ensuring that the SCR system functions effectively across different engine sizes and power outputs.

Conclusion

The Diesel Exhaust Fluid Tank (part 4353381) is an integral component within modern diesel engine systems, specifically those equipped with Selective Catalytic Reduction (SCR) technology. This tank stores Diesel Exhaust Fluid (DEF), also known as AdBlue, which is a solution of urea and deionized water.

When the engine is operating, DEF is injected into the exhaust stream upstream of the SCR catalyst. Here, the DEF decomposes into ammonia and carbon dioxide under the high temperatures of the exhaust gases. The ammonia then reacts with nitrogen oxides (NOx) in the presence of the SCR catalyst, converting them into harmless nitrogen and water vapor.

The DEF tank is connected to the DEF dosing system, which includes the DEF pump, injector, and associated tubing and sensors. The DEF pump draws fluid from the tank and delivers it to the injector, which precisely meters the DEF into the exhaust stream based on signals from the engine control unit (ECU). Sensors within the system monitor DEF levels and quality, ensuring optimal performance and compliance with emissions regulations.

In summary, the Diesel Exhaust Fluid Tank (part 4353381) plays a significant role in the after-treatment system of diesel engines, working in conjunction with the DEF dosing system to reduce harmful emissions and meet environmental standards.