4326861
Nitrogen Oxide Sensor
Cummins®

Introduction

The Cummins 4326861 Nitrogen Oxide Sensor is designed to monitor nitrogen oxide (NOx) levels in the exhaust of commercial trucks. It ensures that the truck’s emissions remain within regulatory limits, contributing to environmental protection and compliance with emissions standards. This sensor provides real-time data on NOx emissions, which is essential for the effective functioning of the emissions control system.

Basic Concepts of Nitrogen Oxide Sensors

Nitrogen oxide sensors measure the concentration of nitrogen oxides in the exhaust gases of an engine. These sensors detect the presence of NOx and convert this detection into an electrical signal that can be interpreted by the engine control unit (ECU). The role of nitrogen oxide sensors in emissions control systems is to provide accurate and timely data on NOx levels, enabling the ECU to adjust engine parameters to maintain optimal emissions performance ¹.

Purpose of the Cummins 4326861 Nitrogen Oxide Sensor

The Cummins 4326861 Nitrogen Oxide Sensor is specifically designed to monitor NOx emissions in the exhaust system of trucks equipped with Cummins engines. It provides precise measurements of NOx levels, allowing the ECU to make necessary adjustments to the engine’s operation. This ensures that the truck operates within the prescribed emissions limits, contributing to both environmental compliance and engine efficiency ².

Key Features

The Cummins 4326861 Nitrogen Oxide Sensor features a robust design built to withstand the harsh conditions of commercial truck operations. It is constructed using high-quality materials that ensure durability and reliability. Technological advancements incorporated into this sensor include enhanced sensitivity for accurate NOx measurement and improved resistance to contaminants that could affect sensor performance.

Benefits

The Cummins 4326861 Nitrogen Oxide Sensor offers several benefits, including improved emissions performance by ensuring that NOx levels are accurately monitored and controlled. It aids in compliance with environmental regulations by providing the necessary data for the ECU to adjust engine parameters. Additionally, the sensor may contribute to potential fuel efficiency gains by enabling the engine to operate more efficiently within the emissions limits.

Installation Process

Installing the Cummins 4326861 Nitrogen Oxide Sensor involves several steps. First, ensure the engine is turned off and has cooled down. Locate the sensor’s mounting position in the exhaust system. Use the appropriate tools to remove the old sensor, if applicable. Install the new sensor by aligning it with the mounting position and securing it in place. Connect the electrical connector to the sensor. Finally, start the engine and verify that the sensor is functioning correctly by checking for any error codes or abnormal readings.

Troubleshooting Common Issues

Common issues with the Cummins 4326861 Nitrogen Oxide Sensor may include inaccurate readings or sensor failure. To troubleshoot these issues, first, check the electrical connections for any signs of damage or corrosion. Ensure that the sensor is properly installed and secured in its mounting position. If the sensor continues to provide inaccurate readings, it may need to be calibrated or replaced.

Maintenance Tips

To ensure the optimal performance and longevity of the Cummins 4326861 Nitrogen Oxide Sensor, regular maintenance practices should be followed. This includes inspecting the sensor and its connections for any signs of wear or damage during routine engine maintenance. Keeping the sensor clean and free from contaminants can also help maintain its accuracy and reliability.

Regulatory Compliance

The Cummins 4326861 Nitrogen Oxide Sensor helps trucks comply with various regulatory standards and emissions regulations. These include environmental laws and industry standards that aim to reduce the impact of vehicle emissions on air quality. By accurately monitoring NOx levels, the sensor ensures that trucks meet the required emissions standards.

Impact on Engine Performance

The Cummins 4326861 Nitrogen Oxide Sensor influences engine performance by providing the ECU with accurate NOx emission data. This allows the engine to operate more efficiently within the emissions limits, potentially affecting factors such as power output, fuel efficiency, and overall drivability. By ensuring that the engine operates within the prescribed emissions parameters, the sensor contributes to both environmental compliance and engine performance.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions control technologies. With a history of innovation and a commitment to sustainability, Cummins offers products that meet the needs of various industries, including commercial trucking. The company’s focus on technological advancement and environmental responsibility is reflected in its product offerings, such as the Cummins 4326861 Nitrogen Oxide Sensor.

Nitrogen Oxide Sensor Compatibility with Cummins Engines

The Nitrogen Oxide Sensor part number 4326861, manufactured by Cummins, is designed to be compatible with a range of Cummins engines. This sensor plays a role in monitoring and regulating the nitrogen oxide (NOx) emissions, ensuring that the engines operate within environmental standards.

F3.8 CM2350 Series

The F3.8 CM2350 engine is part of the Cummins F-Series, known for its reliability and efficiency. The Nitrogen Oxide Sensor 4326861 fits seamlessly into this engine, providing accurate NOx readings that help maintain optimal performance and compliance with emission regulations.

ISB6.7 CM2350 B101

The ISB6.7 CM2350 B101 engine is another variant in the Cummins lineup, recognized for its robust design and power. The sensor 4326861 is engineered to integrate with this engine, ensuring precise NOx monitoring and contributing to the engine’s overall efficiency and environmental friendliness.

QSF3.8 CM2350 F107

The QSF3.8 CM2350 F107 engine is designed for specific applications requiring high performance and durability. The Nitrogen Oxide Sensor 4326861 is compatible with this engine, providing essential data for NOx management and helping to maintain regulatory compliance.

X12 CM2350 X119B and X15 CM2350 Series

The X12 CM2350 X119B engine, along with the X15 CM2350 X116B and X15 CM2350 X123B engines, are part of the Cummins X-Series, known for their versatility and adaptability. The sensor 4326861 fits these engines, ensuring accurate NOx detection and contributing to the engines’ efficient operation and environmental compliance.

Conclusion

The Cummins 4326861 Nitrogen Oxide Sensor is integral to the efficient operation of the aftertreatment system in modern engine designs. This sensor is strategically positioned within the aftertreatment device to monitor the levels of nitrogen oxides (NOx) in the exhaust stream. The sensor’s placement allows it to provide real-time data on NOx concentrations, which is essential for the engine control unit (ECU) to adjust the fuel injection and timing. This ensures that the aftertreatment system, which includes components like the selective catalytic reduction (SCR) system and diesel particulate filter (DPF), operates within optimal parameters. The sensor is mounted on a sensor bracket, which secures it in place and protects it from the harsh conditions of the exhaust environment. This bracket is designed to withstand high temperatures and vibrations, ensuring the sensor remains functional and accurate over time. The data from the Nitrogen Oxide Sensor is used by the ECU to make necessary adjustments to the aftertreatment system. This includes regulating the injection of urea (DEF) into the exhaust stream, which reacts with NOx to convert it into harmless nitrogen and water vapor. The integration of the Nitrogen Oxide Sensor into the aftertreatment system enhances the overall efficiency and effectiveness of emissions control, ensuring compliance with environmental regulations and reducing the engine’s environmental impact ³.