A package of design measures giving improved piston-running behaviour, lower wear rates, longer time between overhauls, and lower cylinder lubricant feed rates. TriboPack incorporated in Wärtsilä Sulzer RTA-series engines comprises:
Multi-level cylinder lubrication,
Liner with the appropriate material, with sufficient hard phase,
Careful machining and deep-honing of the liner over the full length of the running surface,
Insulating tubes in the cooling bores in the upper part of the liner,
Mid-stroke liner insulation,
Pre-profiled piston rings in all piston grooves,
Chromium-ceramic coating on top piston ring,
Running-in Coating piston rings in all lower piston grooves,
Anti-Pilishing Ring at the top of the cylinder liner,
Increased thickness of chromium layer in the piston ring grooves.
For more information read SULZER RT-flex60C Technology Review.