Product Descreiption
Parameters
- Part Number: 4089644-ISLE
- Type: Compression ring (top ring) for ISLE series diesel engines
- Material: High-grade ductile iron with chrome-plated running surface
- Dimensions: Matches ISLE engine piston bore (standard size, no oversize)
- Ring Gap: 0.35–0.45 mm (installed)
- Surface Treatment: Anti-wear, anti-corrosion coating
- Compatibility: Cummins ISLE 8.9L diesel engine
Installation Position
- Installed in the top groove of the piston ring lands.
- Fitted between the piston and cylinder liner, seated firmly in the piston’s top ring groove.
- Installed with a ring compressor; ring gap offset from piston pin axis to avoid pressure leakage.
Function
- Sealing: Seals combustion chamber to prevent gas leakage, maintaining compression pressure.
- Heat Transfer: Transfers piston heat to cylinder liner for cooling.
- Oil Control: Scrapes excess oil from cylinder wall, preventing oil entering combustion chamber.
- Wear Resistance: Withstands high temperature, pressure and friction in combustion chamber.
