4976252
Compression Piston Ring
Cummins®

The Cummins 4976252 Compression Piston Ring is a component designed for use in heavy-duty truck engines. It plays a role in maintaining engine efficiency and performance by ensuring proper sealing of the combustion chamber and maintaining compression levels necessary for efficient fuel combustion ¹.

Basic Concepts of Compression Piston Rings

Compression piston rings are components found in internal combustion engines. Their general function is to seal the combustion chamber, maintain compression during the combustion process, and prevent oil from entering the combustion area. These rings contribute to the engine’s overall performance by ensuring that the air-fuel mixture is compressed effectively before ignition, which leads to more efficient and powerful combustion ².

Purpose and Role of the 4976252 Compression Piston Ring

The Cummins 4976252 Compression Piston Ring is specifically designed to operate within the parameters of a truck engine. It serves to seal the combustion chamber, maintain the necessary compression levels for efficient fuel combustion, and contribute to the overall performance and longevity of the engine. By ensuring a tight seal, this ring helps in maximizing the efficiency of the combustion process and minimizing oil consumption ³.

Key Features

The Cummins 4976252 Compression Piston Ring is characterized by its material composition and design, which are tailored to enhance performance and durability. The ring is made from high-quality materials that can withstand the high temperatures and pressures within the engine. Its design includes features that improve sealing efficiency and reduce wear, contributing to its longevity and reliability in heavy-duty applications.

Benefits

The Cummins 4976252 Compression Piston Ring offers several benefits, including improved engine efficiency through effective sealing of the combustion chamber, reduced oil consumption due to its design, enhanced durability that ensures long-term performance, and a contribution to overall engine longevity by maintaining optimal compression levels.

Installation and Compatibility

Proper installation of the Cummins 4976252 Compression Piston Ring is crucial for ensuring correct fitment and function within the engine. It is designed to be compatible with various Cummins engine models, ensuring that it meets the specific requirements of each engine it is intended for. Following manufacturer guidelines for installation ensures that the ring operates as intended, contributing to the engine’s performance and durability.

Maintenance and Troubleshooting

Maintaining the Cummins 4976252 Compression Piston Ring involves regular inspection intervals to check for wear or damage, cleaning procedures to remove any contaminants that could affect its performance, and following recommended practices to ensure optimal operation. Troubleshooting common issues related to compression piston rings may involve checking for proper installation, ensuring the ring is free from damage, and addressing any issues that could affect its sealing efficiency.

Performance Impact

The Cummins 4976252 Compression Piston Ring impacts engine performance by contributing to fuel efficiency, power output, and emissions. Proper function of the ring is important for maintaining optimal compression levels, which directly affects how efficiently the engine can combust fuel and produce power. Its role in sealing the combustion chamber also helps in reducing oil consumption and emissions, contributing to the overall health and efficiency of the engine.

Cummins Overview

Cummins Inc. is a well-established company in the automotive industry, known for its high-quality engine components. With a history of innovation and commitment to producing reliable engine parts, Cummins has built a reputation for excellence. The 4976252 Compression Piston Ring is a testament to Cummins’ dedication to quality and performance in the heavy-duty truck engine market ⁴.

Compression Piston Ring Compatibility with Cummins Engines

The Compression Piston Ring part number 4976252, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is crucial for maintaining the integrity of the engine’s combustion chamber and ensuring optimal performance. Below is a detailed overview of the engines with which this part is compatible:

F2.8 Series Engines

• F2.8 CM2620 F135B
• F2.8 CM2220 F117
• F2.8 CM2220 F129

The F2.8 series engines, including the F2.8 CM2620 F135B, F2.8 CM2220 F117, and F2.8 CM2220 F129, are designed for various applications, from industrial to marine use. The Compression Piston Ring part number 4976252 is engineered to fit these engines, ensuring a tight seal and reducing blow-by, which is essential for maintaining engine efficiency and longevity.

ISF Series Engines

• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129

The ISF series engines, such as the ISF2.8 CM2220 F117 and ISF2.8 CM2220 F129, are known for their reliability and performance in heavy-duty applications. The Compression Piston Ring part number 4976252 is compatible with these engines, providing the necessary sealing to handle high pressures and temperatures.

QSF Series Engines

• QSF2.8 CM2880 F104
• QSF2.8 CM2880 F105
• QSF2.8 CM2880 F114

The QSF series engines, including the QSF2.8 CM2880 F104, QSF2.8 CM2880 F105, and QSF2.8 CM2880 F114, are designed for demanding applications where durability and performance are critical. The Compression Piston Ring part number 4976252 is specifically designed to fit these engines, ensuring a reliable seal that helps maintain engine efficiency and reduces wear.

R2.8 Series Engines

• R2.8 CM2220 R101B

The R2.8 series engine, such as the R2.8 CM2220 R101B, is another variant that benefits from the Compression Piston Ring part number 4976252. This part is engineered to fit seamlessly into the engine, providing the necessary sealing to ensure optimal performance and longevity.

By ensuring that the Compression Piston Ring part number 4976252 is correctly installed in these engines, users can maintain the engine’s performance, efficiency, and reliability.

Role of Part 4976252 Compression Piston Ring in Engine Systems

The part 4976252 Compression Piston Ring is integral to the efficient operation of various engine components. It is specifically designed to fit within the piston assembly, where it plays a significant role in maintaining the seal between the piston and the cylinder wall. This seal is essential for retaining combustion pressure within the cylinder, thereby enhancing the engine’s performance and efficiency.

When installed in the engine piston, the compression piston ring works in conjunction with other components of the piston ring kit to ensure optimal sealing. This is particularly important during the power stroke, where the efficient transfer of energy from the combustion process to the connecting rod and piston is vital. The ring’s proper fit and function contribute to the overall durability and reliability of the piston assembly.

In the context of the power cylinder kit, the compression piston ring is a key element that helps in reducing blow-by, which is the leakage of combustion gases past the piston rings. This not only improves engine efficiency but also reduces emissions, aligning with modern performance standards.

Furthermore, the interaction between the compression piston ring and the camshaft is indirect but significant. A well-sealed combustion chamber ensures that the timing and efficiency of the valve events controlled by the camshaft are maximized, leading to better overall engine performance.

The integration of the compression piston ring with the injector system is also noteworthy. Efficient combustion, facilitated by a properly sealed cylinder, allows the injector to deliver fuel more effectively, resulting in improved fuel economy and power output.

In summary, the part 4976252 Compression Piston Ring is a fundamental component that enhances the functionality and performance of various engine systems, including the piston assembly, power cylinder kit, and the interplay between the camshaft and injector systems.

Conclusion

The Cummins 4976252 Compression Piston Ring is a critical component in heavy-duty truck engines, contributing to engine efficiency, performance, and longevity. Its proper installation, maintenance, and compatibility with various Cummins engines ensure optimal engine operation and reliability.