4326863
Nitrogen Oxide Sensor
Cummins®

Introduction

The Cummins 4326863 Nitrogen Oxide Sensor is designed to monitor nitrogen oxide (NOx) levels in the exhaust of heavy-duty trucks. It ensures the engine operates within permissible emissions standards, contributing to both engine performance and environmental compliance.

Basic Concepts of Nitrogen Oxide Sensors

Nitrogen oxides (NOx) are gases formed during the combustion process in diesel engines. They are produced when nitrogen and oxygen in the air combine under high temperature and pressure conditions. Nitrogen oxide sensors measure the concentration of NOx in the exhaust, providing data for the engine control unit (ECU) to adjust engine parameters and ensure emissions remain within regulatory limits ¹.

Function and Operation of the 4326863 Nitrogen Oxide Sensor

The Cummins 4326863 Nitrogen Oxide Sensor measures NOx levels in the exhaust stream using electrochemical technology. It converts NOx levels into an electrical signal sent to the ECU, allowing for real-time adjustments to the engine’s operation, optimizing performance while minimizing emissions ².

Role in Truck Operation

The 4326863 Nitrogen Oxide Sensor interacts with the ECU to maintain optimal engine performance and emissions compliance. By providing continuous data on NOx levels, the sensor enables the ECU to adjust fuel injection timing, exhaust gas recirculation (EGR) rates, and other parameters, achieving a balance between engine efficiency and emissions control ³.

Key Features

The Cummins 4326863 Nitrogen Oxide Sensor features a robust design and construction, utilizing high-quality materials for durability and accuracy. Its electrochemical cell technology allows for precise measurement of NOx levels, and its compact design facilitates easy integration into the exhaust system of heavy-duty trucks.

Benefits of Using the 4326863 Nitrogen Oxide Sensor

The use of the Cummins 4326863 Nitrogen Oxide Sensor offers several benefits. It contributes to improved emissions control by providing accurate NOx measurements, allowing the ECU to make informed adjustments. This results in enhanced engine efficiency and ensures compliance with environmental regulations, promoting a cleaner operating environment.

Troubleshooting and Maintenance

Common issues with the 4326863 Nitrogen Oxide Sensor may include inaccurate readings or sensor failure. Diagnostic procedures involve checking the sensor’s electrical connections, verifying its placement in the exhaust system, and ensuring it is free from contaminants. Regular maintenance practices, such as cleaning the sensor and inspecting its condition, can help ensure optimal performance and longevity.

Environmental Impact

Nitrogen oxides contribute to air pollution and can have adverse effects on air quality and human health. The Cummins 4326863 Nitrogen Oxide Sensor plays a role in reducing these emissions by providing the necessary data for the ECU to adjust engine operations. This contributes to lower NOx emissions, promoting cleaner air quality and reducing the environmental impact of heavy-duty trucks.

Regulatory Compliance

The Cummins 4326863 Nitrogen Oxide Sensor helps trucks meet emissions regulations and standards set by environmental agencies. By accurately monitoring NOx levels, it ensures that trucks comply with laws and industry guidelines aimed at reducing air pollution and promoting sustainable transportation practices.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines, as well as related technologies. With a history of innovation and a commitment to sustainability, Cummins has established itself as a leader in the automotive industry, particularly in diesel engine technology. The company’s expertise and dedication to advancing engine efficiency and emissions control are evident in products like the 4326863 Nitrogen Oxide Sensor.

Nitrogen Oxide Sensor (Part 4326863) Compatibility with Cummins Engines

The Nitrogen Oxide Sensor, identified by part number 4326863, is a critical component in modern Cummins engines, designed to monitor and regulate nitrogen oxide (NOx) emissions. This sensor ensures that the engines meet stringent environmental regulations.

Compatibility with Specific Engine Models

• 6C8.3
• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B
• ISB/ISD4.5 CM2150 B119
• ISB3.9 CM2220 B107
• ISB5.9 CM2880 B127
• ISBE CM2150
• ISBE4 CM850
• ISF3.8 CM2220 AN
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123
• ISG11 CM2880 G108
• ISG12 CM2880 G107
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138
• ISZ13 CM2150 Z105
• QSB6.7 CM2350 B105

Grouping by Engine Series

ISB Series

• ISB/ISD4.5 CM2150 B119
• ISB3.9 CM2220 B107
• ISB5.9 CM2880 B127
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

The ISB series engines, including the ISB/ISD4.5, ISB3.9, ISB5.9, ISL9, and ISL9.5, are designed for heavy-duty applications and benefit significantly from the NOx sensor. This sensor ensures optimal performance and compliance with emission standards.

ISBE and ISBE4 Series

• ISBE CM2150
• ISBE4 CM850

The ISBE and ISBE4 series engines, such as the ISBE CM2150 and ISBE4 CM850, are known for their reliability and efficiency. The NOx sensor is integral to maintaining these engines’ performance and environmental compliance.

ISF Series

• ISF3.8 CM2220 AN
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123

The ISF series engines, including the ISF3.8 CM2220 AN, ISF3.8 CM2350 F109, and ISF4.5 CM2220 F123, are designed for a range of applications, from agricultural to industrial use. The NOx sensor ensures these engines operate efficiently and within regulatory limits.

ISG Series

• ISG11 CM2880 G108
• ISG12 CM2880 G107

The ISG series engines, such as the ISG11 CM2880 G108 and ISG12 CM2880 G107, are built for durability and performance. The NOx sensor is essential for these engines to maintain their efficiency and environmental compliance.

QSB Series

• QSB6.7 CM2350 B105

The QSB series engine, like the QSB6.7 CM2350 B105, is designed for versatility and power. The NOx sensor is crucial for ensuring that this engine meets emission standards while delivering reliable performance.

Other Models

• 6C8.3
• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B
• ISZ13 CM2150 Z105

The remaining models, including the 6C8.3, D4.0 CM2620 D103B, F3.8 CM2350 F120B, F3.8 CM2620 F137B, F4.5 CM2620 F139B, and ISZ13 CM2150 Z105, also benefit from the NOx sensor. This sensor is vital for these engines to operate efficiently and comply with environmental regulations.

Role of Part 4326863 Nitrogen Oxide Sensor in Engine Systems

The part 4326863 Nitrogen Oxide Sensor is an integral component in modern engine systems, specifically designed to monitor and regulate the levels of nitrogen oxides (NOx) emitted by the engine. This sensor is strategically positioned within the aftertreatment device, which is a system designed to clean exhaust gases before they are released into the atmosphere.

When the engine is running, the Nitrogen Oxide Sensor continuously measures the concentration of NOx in the exhaust stream. This data is then transmitted to the engine control unit (ECU), which uses the information to adjust the fuel injection timing and air-fuel ratio. By doing so, the ECU ensures that the engine operates within the permissible emission limits, thereby reducing the environmental impact of the vehicle.

The sensor is mounted on a sensor bracket, which provides a stable and secure platform for the sensor. This bracket is designed to withstand the high temperatures and vibrations associated with the engine environment, ensuring the sensor remains operational and accurate over time.

Conclusion

The Cummins 4326863 Nitrogen Oxide Sensor plays a significant role in maintaining the efficiency and environmental compliance of engine systems by providing real-time data on NOx levels, allowing for precise control and adjustment of engine parameters. Its compatibility with a wide range of Cummins engine models underscores its importance in modern diesel engine technology.