4326862
Nitrogen Oxide Sensor
Cummins®

The Nitrogen Oxide Sensor 4326862 by Cummins is a specialized component designed to monitor and control nitrogen oxide (NOx) emissions in heavy-duty trucks. Its purpose is to ensure that diesel engines operate within permissible emissions limits, thereby contributing to environmental protection and regulatory compliance. This sensor is integral to the emissions control system, providing real-time data that allows for precise adjustments to engine performance.

Basic Concepts of Nitrogen Oxide Sensors

Nitrogen oxides (NOx) are a group of gases formed during the combustion process in diesel engines. These gases are significant contributors to air pollution and can have adverse effects on both the environment and human health. Nitrogen oxide sensors are designed to detect the concentration of NOx in the exhaust stream. They operate using electrochemical cells or infrared technology to measure NOx levels accurately. The data collected by these sensors is used by the engine control unit (ECU) to adjust fuel injection timing, air-fuel ratio, and other parameters to minimize NOx emissions ¹.

Purpose of the 4326862 Nitrogen Oxide Sensor

This part plays a role in the emissions control system by providing continuous feedback on NOx levels. This feedback allows the ECU to make real-time adjustments to engine operations, ensuring that emissions remain within regulatory limits. By maintaining optimal engine performance and emissions control, the sensor contributes to both environmental sustainability and regulatory compliance.

Key Features

The 4326862 Nitrogen Oxide Sensor is characterized by its robust design and high-quality construction materials. It incorporates advanced electrochemical technology to ensure accurate and reliable NOx measurements. The sensor is built to withstand the harsh conditions of heavy-duty truck environments, including high temperatures and vibrations. Its durable construction and precise measurement capabilities make it a reliable component in the emissions control system.

Benefits

Using the 4326862 Nitrogen Oxide Sensor offers several benefits. It enhances emissions control by providing accurate NOx measurements, which allows for precise adjustments to engine operations. This results in improved engine performance and efficiency. Additionally, the sensor can contribute to cost savings by optimizing fuel consumption and reducing the need for frequent maintenance. Its role in ensuring regulatory compliance also helps avoid potential penalties associated with non-compliance.

Installation and Integration

Proper installation of this Cummins part is crucial for its effective operation. The installation process involves mounting the sensor in the exhaust system and connecting it to the ECU. Preparatory steps may include cleaning the installation area and ensuring that all connections are secure. Compatibility with the truck’s make and model should be verified to ensure seamless integration into the emissions system.

Troubleshooting and Maintenance

Common issues with the 4326862 Nitrogen Oxide Sensor may include inaccurate readings or sensor failure. Diagnostic procedures involve checking the sensor’s connections, inspecting for physical damage, and verifying the accuracy of its readings. Maintenance tips include regular inspection of the sensor and its connections, ensuring that it remains clean and free from contaminants. Proper maintenance can extend the sensor’s lifespan and ensure its optimal performance.

Regulatory Compliance and Emissions Standards

The 4326862 Nitrogen Oxide Sensor plays a role in helping trucks meet various emissions standards and regulations, including those set by the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB). By providing accurate NOx measurements, the sensor ensures that engine operations are adjusted to comply with these regulations. This compliance helps avoid penalties and contributes to environmental sustainability.

Cummins Corporation

Cummins Corporation is a leading manufacturer of diesel engines with a long history of innovation and expertise in engine technology. The company is committed to developing sustainable solutions for the automotive industry, including advanced emissions control systems. Cummins’ dedication to quality and innovation is reflected in its products, such as the 4326862 Nitrogen Oxide Sensor, which are designed to meet the demanding requirements of heavy-duty truck applications.

Cummins Nitrogen Oxide Sensor 4326862 Compatibility

The Cummins Nitrogen Oxide Sensor part number 4326862 is a critical component in modern diesel engine systems, designed to monitor and regulate nitrogen oxide emissions. This sensor is compatible with a wide range of Cummins engines, ensuring that these engines meet stringent environmental standards. Below is a detailed overview of the engines with which this sensor is compatible:

B Series Engines

• B4.5 CM2350 B135B
• B6.7 CM2350 B135B
• ISB4.5 CM2350 B104
• QSB6.7 CM2350 B105

These B series engines, ranging from 4.5 to 6.7 liters, are commonly used in various applications, including agricultural, construction, and industrial machinery. The Nitrogen Oxide Sensor 4326862 is engineered to work seamlessly with these engines, ensuring optimal performance and compliance with emission regulations.

F Series Engines

• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• ISF3.8 CM2350 F109
• QSF3.8 CM2350 F107

The F series engines, with displacements of 3.8 liters, are typically found in on-highway and vocational applications. The 4326862 sensor is designed to integrate with these engines, providing accurate NOx emission readings and contributing to the overall efficiency and environmental friendliness of the engine.

G Series Engines

• ISG12 CM2880 G107
• QSG12/X12 CM2350 G110

These larger G series engines, with displacements of 12 liters, are used in heavy-duty applications such as mining and construction. The Nitrogen Oxide Sensor 4326862 is compatible with these engines, ensuring that they operate within the required emission limits while maintaining high performance.

X Series Engines

• ISX12 CM2350 X102
• ISX15 CM2350 X101
• QSX15 CM2350 X105
• X15 CM2350 X116B

The X series engines, ranging from 12 to 15 liters, are among the most powerful engines in the Cummins lineup. They are used in heavy-duty on-highway and off-highway applications. The 4326862 sensor is designed to fit these engines, providing the necessary data to manage NOx emissions effectively.

K Series Engines

• QSK50 CM2350 K108
• QSK60 G CM2358 K110

The K series engines, with displacements of 50 and 60 liters, are used in stationary power applications such as power generation and marine. The Nitrogen Oxide Sensor 4326862 is compatible with these engines, ensuring that they meet the required emission standards while providing reliable power.

L and T Series Engines

• QSL9 CM2350 L102
• QST30 CM2350 T101

The L and T series engines, with displacements of 9 and 30 liters respectively, are used in a variety of applications, including construction and agricultural machinery. The 4326862 sensor is designed to work with these engines, ensuring that they operate efficiently and within the required emission limits.

Z Series Engines

• Z14 CM2670 Z103B

The Z series engine, with a displacement of 14 liters, is used in specialized applications such as marine and power generation. The Nitrogen Oxide Sensor 4326862 is compatible with this engine, providing the necessary data to manage NOx emissions effectively.

By ensuring compatibility with a wide range of Cummins engines, the Nitrogen Oxide Sensor 4326862 plays a crucial role in maintaining the environmental performance and efficiency of these engines across various applications.

Role of Part 4326862 Nitrogen Oxide Sensor in Engine Systems

The integration of the Nitrogen Oxide Sensor, identified as part 4326862, within various engine systems is a sophisticated process that enhances the overall efficiency and environmental compliance of the vehicle. This sensor is strategically positioned within the aftertreatment arrangement, specifically at the nitrogen oxide sensor location, which is typically upstream or downstream of the aftertreatment device. Its primary function is to monitor the levels of nitrogen oxides (NOx) in the exhaust gases.

The data collected by the nitrogen oxide sensor is transmitted to the Engine Control Module (ECM). The ECM uses this information to adjust the fuel injection timing and the operation of the aftertreatment system, ensuring that emissions remain within regulatory limits. The sensor is mounted on a sensor bracket, which provides a stable and secure attachment point within the engine bay.

The aftertreatment system, which may include components such as selective catalytic reduction (SCR) or diesel particulate filters (DPF), relies on precise data from the nitrogen oxide sensor to function effectively. By continuously providing real-time data on NOx levels, the sensor allows the ECM to make necessary adjustments to the aftertreatment device’s operation, optimizing the reduction of harmful emissions while maintaining engine performance ².

Conclusion

The 4326862 Nitrogen Oxide Sensor by Cummins is a vital component in the emissions control system of heavy-duty diesel engines. Its accurate and reliable measurement of NOx levels allows for precise adjustments to engine operations, ensuring compliance with emissions regulations and contributing to environmental sustainability. The sensor’s robust design and compatibility with a wide range of Cummins engines make it an essential part of modern diesel engine technology.

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