Piston rings have triple purpose

Piston rings have triple purpose

Piston rings seal the combustion chamber. They are set with precision so as to apply the correct pressure on the cylinder wall or liner, which ensures there is a consistent film of oil across the cylinder's working surfaces. This provides sufficient lubrication and protects against wear.

Piston rings from Perkins come as three rings. They are the top compression ring, then the intermediate compression ring and finally the oil control ring. These parts are relatively small in size but play a large role in the main cylinder block of your engine.

Their function is to seal off gases generated in the internal combustion process, help with transferring heat to the cylinder wall and then to both lubricate and scrape down oil from it. Getting the quantities of oil right is vital. Too much oil will cause it to burn off during combustion potentially making your engine produce blue smoke, too little will cause the engine ultimately to seize.

The primary role of the top compression ring is to seal off the majority of the combustion gases to ensure you get the maximum power output from your engine. Any failure or weakening of the piston ring in this area means your engine is working less efficiently than it should.

Piston rings are small but they are vital to keep your engine functioning.

The bottom ring is responsible for most of the oil control, helping to make sure the right amount of oil is used to lubricate the working surfaces of the cylinder, while the intermediate ring helps with both functions, playing a finishing role in the combustion sealing as well as the downward oil scraping.

The result of these three rings working in harmony is sufficient lubrication within the cylinder bore, ensuring that no undue wear occurs at any time.

Once installed, the new piston rings will be covered by a 12 month warranty.

 


Fast facts

    Piston rings:

  • Seal off gases generated during combustion
  • Work in harmony to ensure sufficient lubrication in the cylinder bore
  • Protect against wear

Cylinder components

Cylinder components

Cylinder components have to withstand huge pressures and extremely high temperatures, which is why it is essential to have the best quality product.

Learn more

Major components

Major components

Sometimes major components need replacing and your local distributor can provide the parts, assistance and expertise necessary to get your engine running again.

Learn more

Connect with us

Speak to an expert

If you're ready to learn more or want to receive trusted advice from a Perkins expert, speak to our team today.

Speak to an expert

Stay informed

Stay informed

Get the information you need to succeed. Subscribe for the latest industry trends, Perkins news, and engine advancements.

Sign up for the newsletter

Find expertise near you

Find expertise near you

Your regional Perkins distributor can provide local, on-the-ground engine support to help you meet your business goals.

Find your distributor