5471899
Doser Pump
Cummins®

Introduction

The Cummins 5471899 Dosing Pump is a component designed for use in commercial trucks, specifically within the selective catalytic reduction (SCR) system. Its purpose is to inject diesel exhaust fluid (DEF) into the exhaust stream, which aids in reducing nitrogen oxides (NOx) emissions. This part is integral to the operation of modern commercial trucks, ensuring they meet stringent emission standards while maintaining efficient engine performance ¹.

Basic Concepts of Dosing Pumps

A dosing pump is a device used in DEF systems to meter and deliver precise amounts of DEF into the exhaust stream. The pump operates by creating pressure to inject DEF through a urea injector, where it mixes with exhaust gases. This process facilitates the conversion of NOx into harmless nitrogen and water vapor through a chemical reaction within the SCR catalyst. The dosing pump’s role is vital for the effective functioning of DEF systems in diesel engines ².

Purpose of the Cummins 5471899 Dosing Pump

The Cummins 5471899 Dosing Pump plays a role in the SCR system by injecting DEF into the exhaust stream. This injection is a key step in the reduction of NOx emissions. When DEF is introduced into the hot exhaust gases, it decomposes into ammonia, which then reacts with NOx in the presence of the SCR catalyst to form nitrogen and water. This process is known as selective catalytic reduction and is a standard method for controlling emissions in diesel engines ³.

Key Features

The Cummins 5471899 Dosing Pump is characterized by its robust design and high build quality. It incorporates advanced technological features such as precision dosing control, which ensures accurate DEF delivery. The pump is engineered for durability, with materials and construction that withstand the harsh conditions of commercial truck operations. Additionally, it is designed for easy integration into existing exhaust systems, enhancing its practicality for fleet operators ⁴.

Benefits of Using the Cummins 5471899 Dosing Pump

Utilizing the Cummins 5471899 Dosing Pump offers several advantages. It contributes to improved emission control by ensuring precise DEF dosing, which is critical for the effectiveness of the SCR system. The pump also supports enhanced engine performance by maintaining optimal DEF injection, which can lead to better fuel efficiency and reduced maintenance costs. Furthermore, it aids in compliance with environmental regulations, helping fleets avoid penalties and maintain a positive environmental profile ¹.

Installation and Integration

Installing the Cummins 5471899 Dosing Pump involves several steps and considerations. It is designed to be compatible with various Cummins engine models, facilitating a straightforward integration process. The pump should be installed in accordance with the manufacturer’s guidelines to ensure proper function within the exhaust system. This includes verifying electrical connections, securing the pump in place, and ensuring it is correctly aligned with the DEF injector ².

Maintenance and Troubleshooting

To ensure the optimal performance of the Cummins 5471899 Dosing Pump, regular maintenance is recommended. This includes checking for leaks, verifying electrical connections, and ensuring the pump is free from contaminants. Common issues that may arise include dosing inaccuracies or pump failure, which can often be resolved through troubleshooting steps such as cleaning the injector, checking for obstructions, or replacing faulty components. Adhering to a maintenance schedule can help prevent these issues and prolong the lifespan of the dosing pump ³.

Environmental Impact

The Cummins 5471899 Dosing Pump contributes to reducing harmful emissions from commercial trucks. By facilitating the SCR process, it plays a role in converting NOx into nitrogen and water, significantly lowering the environmental impact of diesel exhaust. This reduction in emissions is a step towards promoting environmental sustainability within the trucking industry, aligning with global efforts to reduce air pollution and combat climate change ⁴.

Technological Advancements

The Cummins 5471899 Dosing Pump incorporates several technological innovations. These include precision dosing control, which ensures accurate DEF delivery for effective NOx reduction. Durability enhancements have been made to the pump’s design and materials, ensuring it can withstand the demanding conditions of commercial truck operations. These advancements reflect Cummins’ commitment to innovation in engine technology and environmental responsibility ¹.

Cummins Company Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation in engine technology, Cummins has established itself as a key player in the commercial trucking industry. The company is dedicated to developing solutions that not only enhance engine performance but also contribute to environmental sustainability, reflecting its ongoing commitment to innovation and excellence in the field of engine technology ².

Compatibility with Cummins Engines

The Dosing Pump part number 5471899, manufactured by Cummins, is designed to integrate seamlessly with a range of Cummins engines. This part is crucial for maintaining the precise control of fluid dosing within the engine’s systems, ensuring optimal performance and efficiency.

QSK19 CM2350 K105 and QSK19 CM2350 K114

The Dosing Pump part 5471899 is compatible with the QSK19 CM2350 K105 and QSK19 CM2350 K114 engines. These engines are known for their robust design and reliability, often used in heavy-duty applications. The integration of the dosing pump ensures that these engines maintain the necessary fluid balance, which is critical for their longevity and performance ³.

QSK50 CM2350 K108

Similarly, the QSK50 CM2350 K108 engine benefits from the precise fluid dosing capabilities of the 5471899 Dosing Pump. This engine, part of the QSK series, is designed for high-performance applications and requires accurate fluid management to operate efficiently. The compatibility of the dosing pump with this engine ensures that it can handle the demands of its intended use ⁴.

QST30 CM2350 T101

The QST30 CM2350 T101 engine also integrates the Dosing Pump part 5471899 effectively. This engine is part of the Cummins QST series, which is known for its versatility and adaptability across various industries. The dosing pump’s role in this engine is to provide the necessary fluid control, enhancing the engine’s overall performance and reliability ¹.

By ensuring that the Dosing Pump part 5471899 is correctly installed and functioning, these Cummins engines can operate at their best, maintaining the fluid balance required for peak performance.

Role of Part 5471899 Dosing Pump in Engine Systems

The part 5471899 Dosing Pump is integral to the operation of several key components within modern engine systems, particularly those equipped with advanced aftertreatment technologies.

Aftertreatment Device

In the context of an aftertreatment device, the dosing pump plays a significant role by precisely metering and injecting Diesel Exhaust Fluid (DEF) into the exhaust stream. This process is essential for the Selective Catalytic Reduction (SCR) system to function effectively. The dosing pump ensures that the correct amount of DEF is delivered, which reacts with the nitrogen oxides (NOx) in the exhaust to convert them into harmless nitrogen and water vapor. This not only helps in meeting stringent emission regulations but also enhances the overall efficiency of the aftertreatment system ².

Doser Pump

As a doser pump, part 5471899 is responsible for the accurate and consistent delivery of DEF to the SCR catalyst. The pump’s performance directly influences the efficiency of NOx reduction. It operates in conjunction with various sensors and control units to monitor exhaust conditions and adjust the DEF dosage in real-time. This dynamic adjustment ensures optimal performance under varying load and speed conditions, contributing to the longevity and reliability of the aftertreatment system ³.

Conclusion

In summary, the Cummins 5471899 Dosing Pump is a pivotal component that ensures the effective operation of aftertreatment devices and doser pumps within engine systems, playing a key role in maintaining emission standards and enhancing engine performance ⁴.