4917503
Speed Indicator Ring
Cummins®

The Cummins 4917503 Speed Indicator Ring is a component designed to facilitate the measurement of engine speed in heavy-duty trucks. Its role is integral to the accurate functioning of the engine’s monitoring systems, providing data that is crucial for both performance optimization and diagnostic processes ¹.

Function and Operation

The Speed Indicator Ring operates by interacting with the engine’s sensor system to generate precise speed readings. It is positioned in a location where it can be detected by the speed sensor, typically near the flywheel or another rotating component. As the engine operates, the ring passes by the sensor, creating a signal that is used to calculate the rotational speed of the engine. This interaction ensures that the engine control unit (ECU) receives accurate data, which is then used to manage various engine functions ².

Purpose of the Speed Indicator Ring

The primary role of the Speed Indicator Ring is to ensure the precise measurement of engine speed. This measurement is vital for the optimal performance of the engine, as it allows the ECU to make real-time adjustments to fuel injection, ignition timing, and other critical parameters. Additionally, accurate speed data is essential for diagnostic purposes, enabling technicians to identify and address potential issues efficiently ³.

Key Features

The Cummins 4917503 Speed Indicator Ring is characterized by its robust design and the use of high-quality materials, which contribute to its durability and reliability. The ring is crafted to withstand the harsh conditions present in heavy-duty truck engines, ensuring long-term performance. Its design also includes features that enhance its functionality, such as precise tooth patterns that improve the accuracy of speed readings.

Benefits

The advantages provided by the Speed Indicator Ring include improved engine performance through accurate speed measurement, which allows for better management of engine parameters. Enhanced diagnostic capabilities are another benefit, as precise speed data aids in the quick identification of engine issues. Additionally, the ring contributes to increased reliability by ensuring that the engine operates within optimal parameters, reducing the risk of damage or failure.

Installation Process

Proper installation of the Speed Indicator Ring is crucial for its effective operation. The process involves positioning the ring in the correct location within the engine, ensuring that it is securely fitted to prevent any movement that could affect the accuracy of speed readings. Attention to detail during installation is important to maintain the integrity of the engine’s monitoring system.

Common Issues and Troubleshooting

Typical problems associated with the Speed Indicator Ring may include inaccurate speed readings due to wear or improper installation. Troubleshooting these issues involves inspecting the ring for signs of damage or misalignment and ensuring that it is correctly positioned within the engine. Addressing these problems promptly can help maintain the accuracy of engine speed measurements and prevent further complications.

Maintenance Tips

Regular maintenance practices are recommended to ensure the longevity and optimal performance of the Speed Indicator Ring. This includes periodic inspection for wear or damage and cleaning to remove any debris that could affect its operation. Adhering to manufacturer-recommended inspection intervals and maintenance procedures can help preserve the functionality of the ring and contribute to the overall efficiency of the engine.

Compatibility and Applications

The Cummins 4917503 Speed Indicator Ring is designed for use in specific types of engines and truck models, demonstrating its versatility and widespread application in the heavy-duty truck industry. Its compatibility with various engine configurations underscores its importance as a standard component in engine monitoring systems.

Manufacturer Overview - Cummins

Cummins Inc. is a renowned manufacturer in the automotive industry, with a history of producing high-quality engine components. The company’s reputation is built on its commitment to innovation, quality, and customer satisfaction, making it a trusted name in the production of engine parts, including the Speed Indicator Ring.

Speed Indicator Ring Compatibility with Cummins Engines

The Speed Indicator Ring part number 4917503, manufactured by Cummins, is designed to fit seamlessly with a range of Cummins engines. This part is crucial for accurately measuring and displaying the engine’s speed, ensuring optimal performance and reliability.

QSK38 Series

• QSK38 CM2150 MCRS
• QSK38 CM850 MCRS

The QSK38 series engines, including the CM2150 MCRS and CM850 MCRS variants, are engineered for high performance and durability. The Speed Indicator Ring 4917503 is specifically designed to integrate with these engines, providing precise speed readings essential for maintaining engine efficiency and safety.

QSK50 Series

• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK50 CM2350 K108

The QSK50 series engines, such as the CM2150 K107, CM2150 MCRS, and CM2350 K108, are known for their robust construction and advanced technology. The Speed Indicator Ring 4917503 is engineered to fit these engines, ensuring accurate speed measurement and contributing to the overall performance and reliability of the engine.

Role of Part 4917503 Speed Indicator Ring in Engine Systems

The part 4917503 Speed Indicator Ring is an integral component in the synchronization and monitoring of various engine systems. It works in conjunction with the engine block, cylinder, crankshaft, and the engine itself to ensure optimal performance and efficiency.

Integration with the Engine Block

The engine block serves as the structural foundation of the engine, housing the cylinders and supporting the crankshaft. The Speed Indicator Ring is typically mounted on the crankshaft or a related component within the engine block. Its precise location allows it to interact with sensors that monitor the rotational speed of the crankshaft. This data is essential for the engine control unit (ECU) to make real-time adjustments to fuel injection, ignition timing, and other critical parameters.

Interaction with the Cylinder

While the Speed Indicator Ring does not directly interface with the cylinder, its role in providing accurate speed data indirectly affects cylinder operations. The ECU uses the speed data from the ring to optimize the air-fuel mixture entering each cylinder. This ensures that each cylinder operates at peak efficiency, contributing to overall engine performance and fuel economy.

Relationship with the Crankshaft

The crankshaft is a pivotal component in the engine, converting the linear motion of the pistons into rotational motion. The Speed Indicator Ring is often attached to the crankshaft or a flywheel connected to it. As the crankshaft rotates, the ring passes by a sensor, generating a signal that indicates the rotational speed. This signal is vital for the ECU to maintain the correct timing for fuel injection and ignition events, ensuring smooth and efficient engine operation.

Contribution to Overall Engine Performance

In the broader context of the engine, the Speed Indicator Ring plays a significant role in maintaining the engine’s performance and reliability. By providing accurate speed data, it allows the ECU to make precise adjustments that enhance fuel efficiency, reduce emissions, and improve overall engine responsiveness. This component is a key element in the engine’s feedback loop, ensuring that the engine operates within its optimal parameters under varying conditions.

Conclusion

The Cummins 4917503 Speed Indicator Ring is a vital component in the engine systems of heavy-duty trucks, ensuring accurate speed measurement and contributing to optimal engine performance and reliability. Its robust design, precise functionality, and compatibility with various Cummins engines make it an essential part of engine monitoring and diagnostic systems.