4902912
Temperature Sensor
Cummins®

The 4902912 Temperature Sensor, manufactured by Cummins, is a component designed to monitor and report the temperature of various engine components in commercial trucks. Cummins, a well-established name in the commercial vehicle industry, is known for its commitment to innovation and quality in engine components. This Cummins part plays a significant role in ensuring the efficient and safe operation of commercial trucks by providing accurate temperature data to the engine management system ³.

Basic Concepts of Temperature Sensors

Temperature sensors are devices that measure the temperature of their surroundings or the temperature of a specific component they are attached to. They function by converting temperature into an electrical signal, which can then be interpreted by electronic systems. In automotive applications, temperature sensors are used to monitor various aspects of the engine and cooling system, ensuring that all components operate within their optimal temperature ranges. This helps in maintaining engine efficiency, preventing overheating, and ensuring the longevity of engine components ¹.

Role of the 4902912 Temperature Sensor in Truck Operations

The 4902912 Temperature Sensor is integral to the operation of commercial trucks, particularly in its interaction with the engine management system. This sensor provides real-time temperature data from critical engine components, allowing the engine management system to make adjustments to fuel injection, ignition timing, and other parameters to optimize engine performance and efficiency. By ensuring that the engine operates within its ideal temperature range, the sensor contributes to the overall reliability and safety of the vehicle ³.

Key Features of the 4902912 Temperature Sensor

The 4902912 Temperature Sensor is characterized by several features that enhance its performance and reliability. Its design incorporates high-quality materials that are resistant to the harsh conditions found in commercial truck engines. Technological specifications such as its accuracy, response time, and durability are tailored to meet the demanding requirements of heavy-duty applications. These features ensure that the sensor provides consistent and reliable temperature readings under all operating conditions ³.

Benefits of Using the 4902912 Temperature Sensor

Utilizing the 4902912 Temperature Sensor in commercial trucks offers several advantages. It contributes to improved engine performance by enabling the engine management system to make precise adjustments based on accurate temperature data. This can lead to enhanced fuel efficiency, as the engine operates more efficiently within its optimal temperature range. Additionally, the sensor plays a role in overall vehicle safety and reliability by helping to prevent engine overheating and related failures ¹.

Installation and Integration

Proper installation and integration of the 4902912 Temperature Sensor within the truck’s engine system are crucial for its effective operation. Installation guidelines recommend following manufacturer specifications for placement and electrical connections to ensure accurate temperature readings. Preparatory steps may include cleaning the sensor’s mounting area and verifying that all electrical connections are secure and free from corrosion ³.

Troubleshooting Common Issues

Common issues with the 4902912 Temperature Sensor, such as inaccurate readings or sensor failure, can often be traced to installation problems, electrical issues, or sensor degradation. Troubleshooting steps include checking electrical connections for corrosion or looseness, verifying the sensor’s placement, and testing the sensor’s output signal with a multimeter to ensure it falls within the expected range ³.

Maintenance Tips

Regular maintenance of the 4902912 Temperature Sensor is key to ensuring its longevity and consistent performance. Maintenance recommendations include periodic cleaning of the sensor and its surrounding area to prevent buildup that could affect readings. Inspection routines should check for signs of wear, corrosion, or damage to the sensor and its connections. Replacement should be considered if the sensor shows signs of failure or if accuracy cannot be restored through maintenance ³.

Compatibility with Cummins Engines

The Temperature Sensor 4902912 is designed to be compatible with a variety of Cummins engines. This sensor plays a crucial role in monitoring the engine’s temperature, ensuring optimal performance and preventing potential overheating issues. Below is a detailed breakdown of the engines with which this temperature sensor is compatible:

ISB Series Engines

• ISB CM2150
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB3.9 CM2220 B107
• ISB5.9 CM2880 B127
• ISB5.9G CM2180
• ISB6.7 CM2250
• ISB6.7 G CM2180 B118

ISBE Series Engines

• ISBE CM2150
• ISBE4 CM850

ISC Series Engines

• ISC CM2150
• ISC CM850

ISF Series Engines

• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN

ISG Series Engines

• ISG11 CM2880 G108
• ISG12 CM2880 G107

ISL Series Engines

• ISL CM2150
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

ISM Series Engines

• ISM CM570/870

By ensuring compatibility with a wide range of Cummins engines, the 4902912 temperature sensor provides a reliable and essential component for maintaining engine performance and preventing overheating issues ².

Role of the 4902912 Temperature Sensor in Engine Systems

The Temperature Sensor 4902912 is integral to the efficient operation of various engine systems, particularly within the aftertreatment system. This sensor is strategically positioned to monitor and relay temperature data from critical components, ensuring optimal performance and compliance with emissions standards.

In the aftertreatment device, the temperature sensor provides real-time data that allows the engine control module (ECM) to adjust the operation of the catalytic converter. Accurate temperature readings are essential for the converter to function effectively, as it relies on precise thermal conditions to catalyze the conversion of harmful emissions into less harmful substances.

The sensor also plays a significant role in the aftertreatment system by ensuring that the muffler assembly and other components operate within their designated temperature ranges. This is vital for maintaining the integrity and efficiency of the entire exhaust system.

Furthermore, the temperature sensor contributes to the overall performance of the top-level assembly aftertreatment by providing continuous feedback to the ECM. This allows for dynamic adjustments to be made in real-time, enhancing the system’s responsiveness to changing operating conditions.

In summary, the 4902912 temperature sensor is a key component in maintaining the balance and efficiency of the engine’s aftertreatment system, ensuring that all interconnected parts—from the catalytic converter to the muffler assembly—function harmoniously within their optimal temperature ranges ³.

Conclusion

The 4902912 Temperature Sensor by Cummins is a critical component in the maintenance and optimization of commercial truck engines. Its accurate temperature monitoring capabilities contribute to enhanced engine performance, fuel efficiency, and overall vehicle safety. Proper installation, regular maintenance, and understanding its role within the engine system are essential for maximizing the benefits of this sensor.