5461947
Temperature Sensor
Cummins®

Introduction

The Cummins 5461947 Temperature Sensor is a component designed to monitor the temperature within the engine system of commercial trucks. Its purpose is to provide accurate temperature readings that help in maintaining optimal engine performance. This sensor plays a role in the operation of commercial trucks by ensuring that the engine operates within safe temperature limits, thereby contributing to efficient performance and longevity of the engine ¹.

Basic Concepts of Temperature Sensors

A temperature sensor is a device that measures the temperature of its surroundings and converts this measurement into an electrical signal. These sensors operate based on various principles, such as thermocouples, thermistors, or resistive temperature detectors (RTDs). In automotive systems, temperature sensors are used to monitor various components, including the engine, transmission, and exhaust systems, to ensure they operate within specified temperature ranges ².

Function and Operation of the 5461947 Temperature Sensor

The Cummins 5461947 Temperature Sensor is typically positioned within the engine system where it can accurately measure the temperature of the engine coolant or other critical areas. It operates by detecting changes in temperature and converting these changes into electrical signals that are sent to the vehicle’s electronic control unit (ECU). The ECU uses this data to make adjustments to the engine’s operation, such as modifying the fuel injection timing or activating the cooling fan, to maintain optimal engine temperature ³.

Role in Truck Operation

The 5461947 Temperature Sensor plays a role in monitoring and maintaining optimal engine temperature. By providing real-time temperature data, it allows the ECU to make necessary adjustments to ensure the engine operates efficiently and does not overheat. This helps in preventing engine damage, improving fuel efficiency, and enhancing overall truck performance ⁴.

Key Features

The Cummins 5461947 Temperature Sensor is known for its durability, accuracy, and compatibility with Cummins engines. It is designed to withstand the harsh conditions of commercial truck operations, providing reliable temperature readings over an extended period. Its accuracy ensures that the ECU receives precise data for making informed decisions about engine management.

Benefits of Using the 5461947 Temperature Sensor

Using the Cummins 5461947 Temperature Sensor offers several advantages. It contributes to improved engine performance by ensuring the engine operates within optimal temperature ranges. This can lead to enhanced fuel efficiency and prolonged engine life, as the sensor helps prevent overheating and other temperature-related issues.

Installation and Integration

Proper installation of the 5461947 Temperature Sensor is crucial for its effective operation. It should be installed in a location where it can accurately measure the temperature of the engine coolant or other targeted areas. Following the manufacturer’s guidelines for installation ensures that the sensor is correctly positioned and securely attached, allowing it to function as intended within the truck’s engine system.

Troubleshooting Common Issues

Common issues with the 5461947 Temperature Sensor may include inaccurate temperature readings or sensor failure. These problems can often be identified through diagnostic tools that read the sensor’s output. Resolving these issues may involve recalibrating the sensor, cleaning its connections, or replacing the sensor if it is found to be faulty.

Maintenance Tips

Regular maintenance of the 5461947 Temperature Sensor is important to ensure its longevity and accuracy. This includes cleaning the sensor and its connections to remove any buildup that could affect its readings. Periodic inspection of the sensor’s condition and functionality can help identify potential issues before they lead to more significant problems.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions. With a strong reputation in the commercial truck industry, Cummins is known for its high-quality products and commitment to innovation and customer satisfaction.

Compatibility with Cummins Engines

The Temperature Sensor 5461947, manufactured by Cummins, is designed to be compatible with a range of Cummins engines. This sensor plays a role in monitoring and regulating engine temperature, ensuring optimal performance and preventing overheating. Below is a detailed overview of the engines with which this temperature sensor is compatible:

B6.7 CM2670 Series

• B6.7 CM2670 B153B
• B6.7 CM2670 X126B
• B6.7 CM2670 X121B
• B6.7 CM2670 X122B

The B6.7 CM2670 series engines, including the B153B, X126B, X121B, and X122B variants, are equipped with the Temperature Sensor 5461947. This sensor is integral to these engines, providing accurate temperature readings that are essential for maintaining engine efficiency and longevity.

F3.8 CM2350 Series

• F3.8 CM2350 F128C
• F3.8 CM2350 F107

The F3.8 CM2350 series engines, specifically the F128C and F107 variants, also utilize the Temperature Sensor 5461947. This sensor ensures that the engine operates within safe temperature limits, contributing to the overall reliability and performance of these engines.

L8.9 CM2670 Series

• L8.9 CM2670 L134C

The L8.9 CM2670 L134C engine is another model that is compatible with the Temperature Sensor 5461947. This sensor is essential for the proper functioning of the engine, providing critical temperature data that helps in preventing potential engine damage.

By ensuring that the Temperature Sensor 5461947 is correctly installed and functioning, operators of these Cummins engines can maintain optimal performance and extend the lifespan of their engines.

Role in Engine Systems

The 5461947 temperature sensor is integral to the effective operation of various engine systems, particularly those involving aftertreatment processes. This sensor is strategically positioned to monitor and relay temperature data from critical areas, ensuring that the engine management system can make informed adjustments.

Integration with Aftertreatment Devices

In modern engine systems, aftertreatment devices play a significant role in reducing emissions and ensuring compliance with environmental regulations. The temperature sensor 5461947 is often installed within or near these devices to provide real-time temperature readings.

• Diesel Particulate Filter (DPF): The sensor monitors the temperature within the DPF, allowing the engine control unit (ECU) to optimize the regeneration process. This ensures that the filter operates efficiently without overheating.

• Selective Catalytic Reduction (SCR) System: In SCR systems, the temperature sensor helps maintain the ideal temperature range for the catalyst. This ensures that the urea injection is timely and effective, maximizing the reduction of nitrogen oxides (NOx).

• Exhaust Gas Recirculation (EGR) Cooler: The sensor provides temperature data from the EGR cooler, assisting the ECU in managing the flow of exhaust gases back into the engine. This helps in reducing combustion temperatures and NOx emissions.

Role in Aftertreatment Processes

The data from the temperature sensor 5461947 is vital for the proper functioning of aftertreatment processes:

• Regeneration: During the regeneration phase of the DPF, the temperature sensor ensures that the process occurs within safe temperature limits, preventing damage to the filter and surrounding components.

• Catalyst Efficiency: For SCR and other catalytic systems, the sensor’s data allows the ECU to adjust the air-fuel mixture and urea dosing to maintain optimal catalyst performance.

• Thermal Management: The sensor aids in the thermal management of the entire exhaust system, helping to prevent thermal stress and component failure.

By providing accurate temperature readings, the 5461947 temperature sensor enables the engine management system to make precise adjustments, enhancing the efficiency and reliability of aftertreatment devices and processes.

Conclusion

The Cummins 5461947 Temperature Sensor is a critical component in the maintenance and operation of commercial truck engines. Its accurate temperature readings ensure that the engine operates within optimal temperature ranges, preventing overheating and enhancing overall performance. Proper installation, regular maintenance, and troubleshooting of common issues are essential to maximize the benefits of this sensor. By integrating with aftertreatment devices and processes, the 5461947 temperature sensor plays a vital role in modern engine systems, contributing to efficient performance and compliance with environmental regulations.