3930347
Camshaft
Cummins®

The Cummins 3930347 Camshaft is a vital component in heavy-duty truck engines, playing a significant role in the engine’s operation. This camshaft is designed to enhance the performance and efficiency of the engine by optimizing valve timing and contributing to overall engine dynamics ¹.

Basic Concepts of a Camshaft

A camshaft is a shaft with a series of cams or lobes that rotate to actuate the engine’s valves. Its primary functions include controlling the timing of the valve opening and closing events in an internal combustion engine. The camshaft interacts with other engine components such as the valve lifters, pushrods, and rocker arms to ensure precise valve operation ².

Purpose of the Cummins 3930347 Camshaft

The Cummins 3930347 Camshaft is specifically engineered to improve the operation of truck engines. It influences valve timing, which is crucial for the intake and exhaust processes. By optimizing valve events, this camshaft enhances engine performance, allowing for better power output, fuel efficiency, and emissions control ³.

Key Features

The Cummins 3930347 Camshaft boasts several notable characteristics. It is constructed from high-quality materials to ensure durability and reliability. The design includes precise cam profiles and lobe geometry, which are tailored to meet the demands of heavy-duty applications. These features contribute to the camshaft’s ability to deliver consistent performance under various operating conditions ⁴.

Benefits

The advantages of the Cummins 3930347 Camshaft include improved engine efficiency, enhanced performance, and increased reliability. By optimizing valve timing, this camshaft helps to maximize power output while maintaining fuel efficiency. Additionally, its robust construction ensures long-term durability, reducing the need for frequent replacements ⁵.

Installation and Compatibility

Proper installation of the Cummins 3930347 Camshaft is crucial for ensuring optimal performance. It is designed to fit specific engine models, and adherence to manufacturer guidelines during installation is recommended to avoid potential issues. Compatibility information should be consulted to ensure the camshaft is suitable for the intended engine application ⁶.

Maintenance and Troubleshooting

Routine maintenance practices are essential for ensuring the longevity and optimal performance of the Cummins 3930347 Camshaft. Regular inspections and lubrication of camshaft components can prevent wear and tear. Common troubleshooting tips include checking for proper valve clearances and ensuring there are no signs of cam wear or lobe damage ⁷.

Performance Enhancements

The Cummins 3930347 Camshaft contributes to overall engine performance by improving power output, fuel efficiency, and emissions control. Its precise design and high-quality materials allow it to withstand the rigors of heavy-duty use, providing consistent and reliable performance. The optimized valve timing ensures that the engine operates efficiently across a wide range of conditions ⁸.

Historical Context and Evolution

The development of camshafts in heavy-duty truck engines has seen significant advancements over the years. Early camshafts were simple in design, but technological progress has led to more sophisticated components that offer improved performance and durability. The Cummins 3930347 Camshaft represents a modern iteration of this evolution, incorporating advanced design principles and materials to meet the demands of contemporary heavy-duty applications ⁹.

Cummins Inc.

Cummins Inc. is a renowned manufacturer in the automotive industry, known for its high-quality engines and components. The company has a long history of innovation and excellence, producing a wide range of products that are trusted by professionals worldwide. The Cummins 3930347 Camshaft is a testament to the company’s commitment to quality and reliability, offering heavy-duty truck engines a component that enhances performance and durability ¹⁰.

Role of Part 3930347 Camshaft in Engine Systems

The camshaft, specifically part 3930347, is integral to the operation of an engine’s valve train. This component is responsible for the precise timing of the opening and closing of the intake and exhaust valves.

When the crankshaft rotates, driven by the timing belt or chain, the camshaft also rotates. As it turns, the lobes on the camshaft push against the valve lifters, which in turn open the valves at the correct moments in the engine cycle. This allows for the intake of air and fuel and the expulsion of exhaust gases.

In performance-oriented applications, the camshaft’s design significantly influences engine performance. A camshaft with more aggressive profiles can enhance power output by optimizing valve timing for higher RPMs. Conversely, a milder camshaft profile may prioritize low-end torque and smoother operation at lower RPMs.

The interaction between the camshaft and other components, such as the valve lifters, pushrods (in pushrod engines), rocker arms, and valves, ensures efficient engine operation. The camshaft’s design affects not only power and torque characteristics but also fuel efficiency and emissions ¹¹.

Conclusion

In summary, the Cummins 3930347 Camshaft is a fundamental component that coordinates the valve events in an engine, directly impacting its performance and efficiency. Its precise design, high-quality materials, and optimized valve timing make it a critical part for enhancing the operation of heavy-duty truck engines.