piston rings
Post on 23-Feb-2016
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Piston Rings
• Purpose:• Seal to prevent loss of compression
pressure• Transfer heat of combustion to cylinder
walls• Support/guide piston in bore
Piston Rings
Piston Rings
•Construction Materials• Cast Iron• Steel
• Coatings• Porous Chrome• Molybdenum • Black Oxide
Piston Rings
Top
Middle
Bottom
Compression
Napier
Oil Control
Piston Rings - Compression
• Rectangular
Piston Rings - Compression
• Taper Face
Piston Rings - Compression
• Internally Beveled
Piston Rings - Compression
• Internally Stepped
Piston Rings - Compression
• Internal Bevel Reverse Twist
Piston Rings – Napier
• Napier
Piston Rings - Napier
• Taper Faced Napier
Piston Rings – Oil Control
• Slotted
Piston Rings – Oil Control
• Expander Spring Backed
Piston Rings – Oil Control
• Coil Spring Loaded - Slotted
Piston Rings – Oil Control
• Coil Spring Loaded - Beveled
Piston Rings – Oil Control
• Coil Spring Loaded – Double Beveled
Piston Rings – Oil Control
• Coil Spring Loaded – Beveled Edge, Chrome Plated
Piston Rings – Oil Control
• Expander/Segment
Piston Rings – Design/Function
• Tangential Pressure
Piston Rings – Comp Ring Seal
Piston Rings – Comp Ring Seal
• Gas Ports
Piston Rings
• Typical Ring Package
Piston Rings
• Typical Ring Package
Piston Rings – Break-in
• Cylinder bore finish (honed) at 1000X
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