4395016
Doser Pump
Cummins®

The Cummins 4395016 Doser Pump is a component designed for use in heavy-duty trucks. It is integral to the Selective Catalytic Reduction (SCR) system, which is a technology employed to reduce nitrogen oxide (NOx) emissions from diesel engines. The doser pump’s role is to inject Diesel Exhaust Fluid (DEF), also known as AdBlue, into the exhaust stream. This injection facilitates a chemical reaction that converts NOx into harmless nitrogen and water vapor, thereby contributing to cleaner emissions and compliance with environmental regulations ¹.

Basic Concepts and Functionality

Doser pumps operate on the principle of delivering DEF into the exhaust system at precise intervals and quantities. This delivery is controlled by the engine’s Electronic Control Unit (ECU), which monitors various parameters such as engine load, speed, and exhaust temperature. The Cummins 4395016 Doser Pump is engineered to provide accurate dosing of DEF, ensuring optimal performance of the SCR system. It consists of a pump mechanism, a control valve, and associated electrical components that work in concert to regulate the flow of DEF ².

Purpose of the 4395016 Doser Pump

The primary function of the 4395016 Doser Pump within a truck’s engine system is to aid in emissions control. By injecting DEF into the exhaust stream, it enables the SCR catalyst to effectively reduce NOx emissions. This not only helps in meeting stringent emissions standards but also contributes to the overall performance and efficiency of the engine. The doser pump’s operation is synchronized with the engine’s operation to ensure that DEF is dosed precisely when needed, maximizing the efficiency of the SCR system ³.

Key Features

The Cummins 4395016 Doser Pump is characterized by its robust design and the use of high-quality materials that ensure durability and reliability. It features a precise dosing mechanism that allows for accurate control of DEF delivery. The pump is also designed to withstand the harsh conditions of the exhaust environment, including high temperatures and corrosive substances. Additionally, it incorporates advanced technology to monitor and adjust the dosing process in real-time, enhancing its performance and reliability.

Benefits

The use of the Cummins 4395016 Doser Pump offers several advantages. It contributes to improved engine efficiency by ensuring that the SCR system operates at peak performance. This results in reduced emissions, helping trucks to comply with environmental regulations. The pump’s durable construction and reliable operation also enhance the longevity of the SCR system, reducing the need for frequent maintenance and replacements.

Installation and Integration

Proper installation of the Cummins 4395016 Doser Pump is crucial for its effective operation. It should be installed in accordance with the manufacturer’s guidelines to ensure compatibility with the truck’s engine system. This includes verifying that the electrical connections are secure and that the pump is correctly positioned within the exhaust system. Careful attention to these details during installation will help to ensure optimal performance and longevity of the doser pump.

Troubleshooting and Maintenance

Common issues with doser pumps can include clogging, electrical faults, or mechanical failures. Regular maintenance, such as checking for DEF leaks, ensuring electrical connections are secure, and monitoring the pump’s operation, can help to prevent these issues. If problems arise, troubleshooting may involve checking the pump’s electrical supply, inspecting the dosing mechanism for blockages, and verifying the integrity of the DEF supply line.

Performance Impact

The Cummins 4395016 Doser Pump plays a role in the truck’s overall performance by contributing to efficient emissions control. This can lead to improvements in fuel efficiency, as the engine operates more cleanly and efficiently. Additionally, by reducing emissions, the pump helps to minimize the environmental impact of the truck’s operation, contributing to a cleaner and more sustainable transportation sector.

Environmental Considerations

The use of the Cummins 4395016 Doser Pump is aligned with efforts to reduce the environmental impact of heavy-duty trucks. By facilitating the reduction of NOx emissions through the SCR system, it helps trucks to comply with environmental regulations and contribute to cleaner air quality. This is particularly important in urban areas where emissions from diesel engines can have a significant impact on air quality and public health.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions solutions. With a history spanning over a century, Cummins is committed to innovation and sustainability in the automotive industry. The company’s product range includes engines and components for on-highway and off-highway applications, demonstrating its versatility and expertise in the field of power solutions.

Compatibility with Cummins Engines

The Doser Pump part 4395016, manufactured by Cummins, is designed to integrate seamlessly with a variety of engine models. Specifically, this part is compatible with the QSG12/X12 CM2350 G110 and X12 CM2350 X119B engines.

For the QSG12/X12 CM2350 G110 engine, the Doser Pump ensures precise fuel delivery, enhancing the engine’s performance and efficiency. Its design allows for smooth operation and minimal maintenance, making it a reliable component for this engine model.

Similarly, in the X12 CM2350 X119B engine, the Doser Pump plays a crucial role in maintaining optimal fuel flow. Its integration with this engine model ensures that the engine operates at peak efficiency, contributing to overall performance and longevity.

Both engines benefit from the Doser Pump’s ability to maintain consistent fuel pressure, which is essential for the smooth operation of the engine. This compatibility highlights the versatility and effectiveness of the Doser Pump in various engine configurations.

Role of Part 4395016 Doser Pump in Aftertreatment Device

The 4395016 Doser Pump is an integral component within the aftertreatment device of an engine system. Its primary function is to deliver precise amounts of Diesel Exhaust Fluid (DEF) into the exhaust stream. This process is essential for the Selective Catalytic Reduction (SCR) system to operate effectively.

When the Doser Pump injects DEF, it decomposes into ammonia and carbon dioxide. The ammonia then reacts with nitrogen oxides (NOx) in the exhaust, converting them into harmless nitrogen and water vapor. This reaction significantly reduces the emission of pollutants, ensuring the engine system complies with environmental regulations.

The efficiency of the Doser Pump directly influences the performance of the aftertreatment device. Consistent and accurate dosing ensures optimal reduction of NOx emissions, maintaining the overall efficiency and reliability of the engine system.

Conclusion

The Cummins 4395016 Doser Pump is a critical component in the SCR system of heavy-duty trucks, designed to reduce NOx emissions and ensure compliance with environmental regulations. Its robust design, precise dosing mechanism, and compatibility with various Cummins engines make it a reliable and efficient solution for emissions control. Proper installation, regular maintenance, and understanding its role in the aftertreatment device are essential for maximizing its performance and longevity.