4984760
Mass Flow Sensor
Cummins®

Introduction to Mass Flow Sensors

A mass flow sensor (MFS) is a critical component in modern engine management systems, responsible for measuring the mass of air entering an internal combustion engine. This measurement is essential for the engine control unit (ECU) to determine the appropriate fuel injection, ensuring optimal performance and efficiency. The Cummins 4984760 mass flow sensor is designed to provide precise and reliable airflow data, enhancing the overall efficiency and emissions control of commercial trucks ¹.

How a Mass Flow Sensor Works

The 4984760 mass flow sensor utilizes advanced technology to measure the mass of air entering the engine. It typically employs a hot-wire or hot-film sensor that detects variations in air temperature and flow rate. As air passes over the sensor, it cools the heated element. The sensor then modulates its power to maintain a constant temperature, and the amount of power required is directly proportional to the mass of the airflow. This data is transmitted to the ECU, which uses it to fine-tune fuel delivery and ignition timing ².

Purpose and Role of the 4984760 Mass Flow Sensor in Truck Operations

The 4984760 mass flow sensor is indispensable in the operation of commercial trucks, ensuring that the engine receives the correct air-fuel mixture. This is vital for maintaining optimal performance, reducing fuel consumption, and minimizing harmful emissions. In heavy-duty trucks, where efficiency and reliability are critical, the accuracy of the mass flow sensor directly influences the engine’s performance and the vehicle’s overall efficiency ³.

Troubleshooting and Maintenance of the 4984760 Mass Flow Sensor

Proper maintenance and troubleshooting of the 4984760 mass flow sensor are essential to ensure its longevity and performance. Here are some key points to consider:

1. Regular Inspection: Periodically inspect the sensor for any signs of damage, such as cracks or corrosion. Ensure that the sensor is securely mounted and that all connections are clean and tight.

2. Cleaning: Keep the sensor free from dirt, debris, and oil. Use a soft brush or compressed air to remove any contaminants that may affect its readings.

3. Testing: Utilize diagnostic tools to monitor the sensor’s performance. Look for any abnormal readings or error codes that may indicate a problem with the sensor.

4. Replacement: If the sensor is faulty or damaged, it should be replaced promptly. Using a genuine Cummins part ensures compatibility and maintains the integrity of the engine management system ⁴.

About Cummins

Cummins is a leading global power leader and a pioneer in the design and manufacture of engines, engine components, and related technologies. With a strong focus on innovation and quality, Cummins provides reliable and efficient solutions for a wide range of industries, including commercial trucks. The company’s commitment to excellence and customer satisfaction has earned it a reputation as a trusted name in the automotive and heavy-duty sectors.

Expertise and Authority

With extensive experience in commercial truck parts, there is a deep understanding of the critical components that drive the performance and efficiency of heavy-duty vehicles. Expertise in engine management systems and sensor technology allows for the provision of comprehensive and reliable information to engineers, mechanics, truck drivers, and fleet operators. By prioritizing accuracy, detail, and clarity, the aim is to educate and empower readers to achieve their objectives with confidence.

Mass Flow Sensor (Part 4984760) Compatibility with Cummins Engines

The Mass Flow Sensor (MFS) part number 4984760, manufactured by Cummins, is designed to integrate seamlessly with a variety of Cummins engines. This sensor plays a crucial role in monitoring the air flow entering the engine, ensuring optimal performance and efficiency. Below is a detailed look at the compatibility of this sensor with specific Cummins engine models.

ISB (Chrysler) Engines

The ISB engines, developed in collaboration with Chrysler, are known for their robust performance and reliability. The Mass Flow Sensor 4984760 is engineered to fit these engines, providing accurate air flow measurements that are essential for maintaining the engine’s air-fuel ratio. This ensures that the engine operates efficiently, reducing emissions and enhancing fuel economy.

ISF2.8 CM2220 F129 and R2.8 CM2220 R101B Engines

The ISF2.8 CM2220 F129 and R2.8 CM2220 R101B engines are smaller displacement variants of the ISB series. The Mass Flow Sensor 4984760 is compatible with these engines, offering the same level of precision and reliability. This compatibility ensures that these engines can achieve optimal performance, even in smaller applications.

ISV (Nissan) Engines

The ISV engines, developed in partnership with Nissan, are designed for specific applications requiring high performance and durability. The Mass Flow Sensor 4984760 is fully compatible with these engines, providing the necessary data for the engine control unit to manage air flow effectively. This ensures that the ISV engines can deliver consistent power and efficiency.

QSB4.5 CM2250 EC and QSB6.7 CM2250 Engines

The QSB engines, particularly the QSB4.5 CM2250 EC and QSB6.7 CM2250, are known for their heavy-duty capabilities. The Mass Flow Sensor 4984760 is designed to integrate with these engines, ensuring that they can handle high air flow rates without compromising on accuracy. This compatibility is crucial for maintaining the performance and reliability of these engines in demanding applications.

QSC9 CM2250/QSL9 CM2250 Engines

The QSC9 CM2250 and QSL9 CM2250 engines are part of the Cummins QSC/QSL series, known for their versatility and power. The Mass Flow Sensor 4984760 is engineered to fit these engines, providing the necessary data for the engine control unit to manage air flow effectively. This ensures that these engines can deliver consistent performance, even in the most challenging conditions.

Role of Part 4984760 Mass Flow Sensor in Engine Systems

The Part 4984760 Mass Flow Sensor is an essential component in modern engine systems, ensuring precise air-fuel mixture management. This sensor is integrated into various engine components to optimize performance and efficiency.

Integration with Long Block Kit

When incorporated into a Long Block Kit, the Mass Flow Sensor works in conjunction with the engine’s core components, such as the cylinder block, crankshaft, and pistons. It measures the mass of air entering the engine, providing the Engine Control Module (ECM) with accurate data to adjust fuel delivery accordingly. This ensures that the air-fuel ratio remains optimal, enhancing combustion efficiency and reducing emissions.

Interaction with Engine Control Module (ECM)

The Engine Control Module (ECM) relies heavily on the data from the Mass Flow Sensor to make real-time adjustments to the fuel injection system. By continuously monitoring the mass airflow, the ECM can fine-tune the fuel delivery, ensuring that the engine operates within its optimal parameters. This interaction is vital for maintaining engine performance under varying conditions, such as different loads and speeds.

Role in Exhaust Gas Recirculation (EGR) System

In engines equipped with an Exhaust Gas Recirculation (EGR) system, the Mass Flow Sensor plays a significant role in regulating the recirculated exhaust gases. The sensor provides the ECM with the necessary data to determine the correct amount of exhaust gas to recirculate, which helps in reducing nitrogen oxides (NOx) emissions. This integration ensures that the EGR system operates efficiently, contributing to lower emissions and improved engine performance.

Contribution to Overall Engine Efficiency

Overall, the Part 4984760 Mass Flow Sensor is a key component in ensuring that the engine systems—whether it’s the Long Block Kit, the ECM, or the EGR system—function harmoniously. Its precise measurements allow for better fuel economy, reduced emissions, and enhanced engine performance, making it an indispensable part of modern engine design.

Conclusion

The Cummins 4984760 mass flow sensor is a vital component in the engine management systems of commercial trucks. Its precise measurement of air mass flow ensures optimal fuel injection, enhancing engine performance, reducing fuel consumption, and minimizing emissions. Proper maintenance and timely replacement with genuine Cummins parts are essential for the sensor’s longevity and performance. The compatibility of this sensor with various Cummins engine models underscores its versatility and reliability in ensuring optimal engine operation.