2871879
Doser Pump
Cummins®

Introduction

The Cummins 2871879 Doser Pump is a component designed to enhance the operation of commercial trucks by managing emissions. Its role is significant in ensuring that trucks meet stringent environmental regulations while maintaining efficient performance.

Basic Concepts of Doser Pumps

A doser pump is a device used in diesel engines to inject diesel exhaust fluid (DEF) into the exhaust stream. This process is part of the selective catalytic reduction (SCR) system, which helps reduce nitrogen oxide (NOx) emissions. The doser pump precisely meters and delivers DEF to the exhaust, where it reacts with NOx to convert it into harmless nitrogen and water vapor ¹.

Purpose of the 2871879 Doser Pump

The Cummins 2871879 Doser Pump is integral to the SCR system in commercial trucks. It ensures that the correct amount of DEF is injected into the exhaust stream, facilitating the chemical reaction that reduces NOx emissions. This component helps trucks comply with environmental regulations and contributes to cleaner air quality ².

Key Features

The Cummins 2871879 Doser Pump is characterized by its robust design and high-quality construction materials. It features precise metering capabilities to ensure accurate DEF delivery. The pump is built to withstand the harsh conditions of commercial truck operations, providing reliable performance over time.

Benefits of Using the 2871879 Doser Pump

Using the Cummins 2871879 Doser Pump offers several benefits. It enhances emissions performance by effectively reducing NOx levels. The pump also contributes to increased engine efficiency and offers enhanced durability, ensuring long-term reliability in demanding applications ³.

Installation and Integration

When installing the Cummins 2871879 Doser Pump, it is important to follow guidelines to ensure proper integration into the truck’s exhaust system. Compatibility with various engine models and configurations should be considered to achieve optimal performance. Careful attention to installation details helps maintain the efficiency and effectiveness of the SCR system.

Troubleshooting and Maintenance

Common issues with the Cummins 2871879 Doser Pump may include clogging or malfunctions in the DEF delivery system. Regular maintenance practices, such as checking for blockages and ensuring the pump is functioning correctly, can help prevent issues. Proper maintenance ensures the pump operates efficiently and prolongs its service life.

Performance and Efficiency

The Cummins 2871879 Doser Pump contributes to improved performance metrics and efficiency gains. By ensuring precise DEF injection, it enhances the overall engine performance and can lead to better fuel economy. The pump’s reliable operation is key to maintaining the truck’s efficiency and compliance with emissions standards.

Environmental Impact

The use of the Cummins 2871879 Doser Pump has a positive environmental impact by significantly reducing NOx emissions. This reduction helps trucks comply with emissions standards and contributes to lower environmental pollution, promoting cleaner air and sustainable transportation practices.

Cummins Overview

Cummins Inc. is a leading manufacturer of diesel engine components, including doser pumps. With a rich history of innovation and quality, Cummins plays a significant role in developing advanced emission control technologies. The company’s commitment to excellence ensures that its products, like the 2871879 Doser Pump, meet the highest standards of performance and reliability.

Compatibility with Cummins Engines

The Doser Pump 2871879, manufactured by Cummins, is designed to fit a variety of Cummins engines, ensuring optimal performance and reliability across different models. Here is a detailed overview of the engines that are compatible with this specific doser pump:

ISB Series

• ISB (Chrysler)
• ISB6.7 CM2250
• ISB6.7 CM2350 B101

The ISB series engines, including the ISB6.7 variants, are known for their robust design and efficiency. The Doser Pump 2871879 is engineered to integrate seamlessly with these engines, providing precise dosing control necessary for maintaining optimal fuel efficiency and emissions standards.

ISC Series

• ISC8.3 CM2250

The ISC8.3 CM2250 engine benefits from the Doser Pump 2871879, which ensures that the engine operates smoothly by maintaining the correct fuel-to-air ratio. This compatibility is crucial for heavy-duty applications where precision in fuel delivery is paramount.

ISF Series

• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN

The ISF series engines, both the ISF2.8 and ISF3.8 variants, are designed for applications requiring high power and reliability. The Doser Pump 2871879 fits these engines perfectly, ensuring that they deliver consistent performance and efficiency.

ISL Series

• ISL9 CM2250

The ISL9 CM2250 engine is another model that is compatible with the Doser Pump 2871879. This compatibility ensures that the engine maintains its high performance and efficiency, making it suitable for various industrial and commercial applications.

ISX Series

• ISX12 CM2350 X102
• ISX12/ISX11.9 CM2250
• ISX15 CM2250
• ISX15 CM2350 X101

The ISX series engines, including the ISX12 and ISX15 variants, are high-performance engines used in heavy-duty applications. The Doser Pump 2871879 is designed to fit these engines, ensuring that they deliver maximum power and efficiency while maintaining stringent emissions standards.

QSB Series

• QSB6.7 CM2350 B105

The QSB6.7 CM2350 B105 engine is another model that is compatible with the Doser Pump 2871879. This compatibility ensures that the engine operates efficiently and reliably, making it suitable for a wide range of applications.

QSF Series

• QSF3.8 CM2350 F107

The QSF3.8 CM2350 F107 engine is designed for applications requiring high power and efficiency. The Doser Pump 2871879 fits this engine, ensuring that it delivers consistent performance and reliability.

QSL Series

• QSL9 CM2350 L102

The QSL9 CM2350 L102 engine is another model that is compatible with the Doser Pump 2871879. This compatibility ensures that the engine maintains its high performance and efficiency, making it suitable for various industrial and commercial applications.

X15 Series

• X15 CM2350 X116B

The X15 CM2350 X116B engine is designed for heavy-duty applications and is compatible with the Doser Pump 2871879. This compatibility ensures that the engine delivers maximum power and efficiency while maintaining stringent emissions standards.

Role of Part 2871879 Doser Pump in Engine Systems

The Part 2871879 Doser Pump is integral to the functionality of several key components within modern engine systems. Its primary role is to precisely deliver a measured amount of Diesel Exhaust Fluid (DEF) into the exhaust stream. This process is essential for the effective operation of the aftertreatment device and the aftertreatment system as a whole.

When the Doser Pump injects DEF into the exhaust stream, it facilitates the Selective Catalytic Reduction (SCR) process. This process occurs within the catalytic converter, where the DEF reacts with nitrogen oxides (NOx) to convert them into harmless nitrogen and water vapor. The Doser Pump’s accurate dosing ensures that the SCR process maintains optimal efficiency, thereby reducing emissions and ensuring compliance with environmental regulations.

The interaction between the Doser Pump and the fluid doser is also noteworthy. The fluid doser relies on the pump to deliver DEF at the correct rate and timing. This synergy ensures that the aftertreatment system operates smoothly, enhancing the overall performance and longevity of the engine.

Conclusion

In summary, the Cummins 2871879 Doser Pump plays a significant role in maintaining the efficiency and effectiveness of the aftertreatment system, catalytic converter, and fluid doser, contributing to reduced emissions and improved engine performance.