Hussmann Ingersoll Rand, User Manual

Page: 10 / 346

Features and Benefits 4
x
Piston Rings
o
4 & 6 cylinder models have two rings, a chrome plated compression ring
and an oil ring
o
Chrome plated rings provide excellent running durability under boundary
lubrication conditions
o
Piston rings are sealed by gas pressure balancing the ring tension to the
proper value
o
Provides excellent sealing under various pressure and speed conditions
x
Cylinder Design
o
Crosshatch honing i.e. "Plateau honing"
o
Cross-hatching allows for higher tolerance operation with marginal
lubrication
o
Cross-hatching grooves help resist wear by retaining oil in the cylinder,
and therefore increases compressor life
x
Valves Plates
o
Spring steel reed valves
o
Valve reeds are matched to compressor design to optimize performance
and efficiency
o
Flow passages optimized for minimal pressure drop
o
High volumetric efficiencies due to minimal re-expansion volume