5375351
Doser Pump
Cummins®

The Cummins 5375351 Doser Pump is a component designed to enhance the operation of commercial trucks by contributing to emissions control. In the context of modern diesel engines, doser pumps play a significant role in ensuring that vehicles meet stringent emissions standards. This part is integral to the Selective Catalytic Reduction (SCR) system, which is a technology used to reduce nitrogen oxides (NOx) emissions from diesel exhaust ³.

Basic Concepts of Doser Pumps

A doser pump is a device that injects a reducing agent, typically Diesel Exhaust Fluid (DEF), into the exhaust stream of a diesel engine. This injection occurs upstream of the SCR catalyst, where the DEF reacts with NOx to convert it into harmless nitrogen and water vapor. The basic components of a doser pump include the pump mechanism, control unit, and nozzle. The operation involves precise dosing of DEF into the exhaust, controlled by the engine’s electronic control unit (ECU) based on various parameters such as engine load, speed, and exhaust temperature ¹.

Purpose of the Cummins 5375351 Doser Pump

The Cummins 5375351 Doser Pump is specifically designed to facilitate the SCR process in commercial trucks. Its role involves injecting DEF into the exhaust stream at calculated intervals to ensure optimal reduction of NOx emissions. This part contributes to the overall efficiency of the SCR system by providing consistent and accurate dosing, which is essential for maintaining compliance with emissions regulations and enhancing engine performance ².

Key Features

The Cummins 5375351 Doser Pump is characterized by several design elements that enhance its performance and reliability. These include a robust construction using high-quality materials to withstand the harsh conditions of diesel exhaust. The pump features precise dosing capabilities, ensuring accurate delivery of DEF. Additionally, it is designed for easy integration into existing engine systems, with compatibility across a range of Cummins engines ⁴.

Benefits of Using the Cummins 5375351 Doser Pump

Utilizing the Cummins 5375351 Doser Pump offers several advantages. It contributes to improved emissions performance by effectively reducing NOx levels, helping trucks meet regulatory standards. The pump also enhances engine efficiency by supporting the SCR system’s function, potentially leading to better fuel economy. Furthermore, its reliable operation ensures compliance with environmental regulations, reducing the environmental impact of diesel engines ³.

Installation and Integration

When installing the Cummins 5375351 Doser Pump, it is important to follow guidelines to ensure proper integration into the truck’s engine system. This may involve checking compatibility with the specific engine model and ensuring that all connections are secure. The installation process should be carried out by qualified technicians to maintain the integrity of the emissions control system ¹.

Troubleshooting Common Issues

Common issues with the Cummins 5375351 Doser Pump may include dosing inaccuracies, leaks, or electrical faults. Troubleshooting steps may involve checking the pump’s electrical connections, inspecting for DEF leaks, and ensuring the dosing nozzle is clean and unobstructed. Addressing these issues promptly can help maintain the effectiveness of the SCR system and ensure continued compliance with emissions standards ².

Maintenance and Care

Regular maintenance of the Cummins 5375351 Doser Pump is crucial for ensuring optimal performance and longevity. This includes periodic inspection of the pump and its components, cleaning the dosing nozzle to prevent blockages, and checking the electrical connections for corrosion or damage. Following manufacturer guidelines for maintenance intervals and procedures will help sustain the pump’s efficiency and reliability ⁴.

Regulatory Compliance and Environmental Impact

The Cummins 5375351 Doser Pump plays a role in helping trucks meet regulatory standards for emissions. By effectively reducing NOx emissions through the SCR process, it contributes to minimizing the environmental impact of diesel engines. This compliance not only ensures that vehicles operate within legal limits but also supports broader environmental sustainability goals ³.

Cummins Corporation 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 sustainability, Cummins plays a significant role in the automotive and engine manufacturing industry. The company’s mission includes advancing technology to power a better world, reflecting its dedication to creating efficient and environmentally responsible solutions ⁴.

Conclusion

The Cummins 5375351 Doser Pump is a vital component in the emissions control system of commercial trucks. By ensuring precise dosing of DEF, it enhances the efficiency of the SCR system, reduces NOx emissions, and supports compliance with environmental regulations. Regular maintenance and proper installation are essential for maximizing the performance and longevity of this part.