Piston Rings TRIZ Cases

A converging protective surface forms a progressive nozzle that reduces pressure peaks and frictional heating on the sealing lip.

A hydraulic brake mechanism integrates shifting into the housing for ergonomic control.

Offset protrusion on split ring side rail scrapes oil during downstroke while larger radius surface reduces friction during upstroke.

Optimized iron-based thermal spray powder lowers melting points and energy consumption while maintaining oxidation resistance through controlled alloying.

Specified radial crushing strength and compressive deformation rates enable the bearing to resist striking wear from engine vibrations.

A segmented oil ring uses a coil expander to stabilize radial pressing force against cylinder walls.

Thermally sprayed Fe-based piston ring coating balances wear resistance and thermal expansion mismatch in large 2-stroke engines.

Inclined groove faces facilitate seal lip separation and tilting to ensure rapid brake fluid replenishment during ESP vacuum conditions.

Radial channels transfer gas to balance pressure forces, preventing ring collapse and reducing friction in reciprocating engines.

Dual-lip seal design leverages pressure differential to activate sealing without external heating, resolving low-temperature reliability issues.

Tapered lamella sections on an oil control ring generate directional radial forces to balance lubrication sufficiency against excessive oil consumption.

Composite helical backup elements convert axial compression into radial expansion, resisting seal extrusion in high-pressure hydrocarbon recovery applications.

Elastic projections on a cylinder cup seal restrict axial movement, preventing ineffective piston stroke variations during rapid return.

A piston ring with a composite coating featuring an intermediate layer balances thermal expansion differences between base and wear protection materials.

Chromium Nitride and Niobium Nitride coatings on piston rings prevent delamination under high load while reducing wear rates by 50%.

Elastic axial stabilization element presses base body against groove flank to resolve sealing versus mobility trade-off.

Segmented intermediate piston ring uses angled end faces to control combustion gas flow, reducing top ring flutter and reverse blow-by.

Segmented surge chambers isolate sealing interfaces from abrasive particles, preventing clogging while maintaining continuous dense phase flow.

Tetrafluoroethene compositions incorporate high-density inorganic oxide microspheres to enhance mechanical strength and wear resistance.

Hydraulic force balance on the backup ring counters pressure-induced dimensional changes, preventing seal extrusion damage in dynamic swivel applications.

Nitriding sub-regions and applying a PVD topcoat creates a self-sharpening scraping edge that resists chipping.

Controlled sintering of atomized metal powders creates a bimaterial valve seat ring that resists thermal expansion and creep stresses during operation.

Selective nitriding on spacer tabs improves wear while Ni plating prevents chipping, reducing tension variation and fuel consumption.

Flow channels vent unburned fuel from the annular crevice during specific crank angles, reducing emissions and improving efficiency.

A piston ring employs a symmetrical butt lock that rotates to refresh the sealing surface, compensating for wear in dry-running compressors.

A piston ring integrates a PVD coating with a sacrificial web extension that wears off during break-in to establish proper lubrication.

Segmented annular lip seal separates radial grooves from the dynamic sealing surface, allowing wider EDM electrode positioning tolerances without causing leaks.

Segmented main and frictional lips stabilize force fluctuations from oil pressure, ensuring reliable sealing without abrasion.

A brake device uses a damping element to oppose piston movement in the release direction.

Laminated hard carbon layers in a sliding member coating film alleviate stress accumulation, preventing chipping while maintaining wear resistance.

Optimized steel composition suppresses end gap width variation during thermal treatment while maintaining required strength.

An elastic valve unit seals through holes in the hydraulic chamber when detached, preventing oil leakage from bicycle brake systems.

Water lubricates sealing rings in hydrogen engines, eliminating oil contamination and particulate formation while maintaining seal integrity.

Graphite microcrystals dispersed in the amorphous matrix lower friction and aggressiveness against aluminum alloy sleeves while maintaining abrasion resistance.

A one-part thermoplastic sealing ring closes a circumferential groove on linearly moving cylindrical parts.

Centered radial pressure prevents posture instability and pumping phenomenon during axial reciprocation under high hydraulic loads.

Plateau-based hard amorphous carbon coatings reduce friction and prevent cylinder liner scoring in high-load internal combustion engines.

Longitudinal grooves on nitrided seating tabs boost friction resistance, preventing separate side rail rotation and reducing oil consumption.

Conical tread webs with specific radii maintain narrow contact areas to reduce cylinder liner wear and minimize oil consumption.

Segmented side rails and optimized spacer height ratios reduce friction loss while preventing sludge accumulation on seating tabs.

Silicon-alloyed cast steel enables gravity casting of piston rings with enhanced fracture resistance.

Graded nitrogen doping in the metal-free DLC layer reduces residual stresses, allowing thicker coatings that balance low friction with extended service life.

A thin film temperature sensor fitted to a bearing seal directly measures contact surface heat.

Flexible sealing rings eliminate gaps between the barrel and die, ensuring uniform cross-sections for advanced Nerikomi techniques.

A piston ring system with asymmetric crowned surfaces generates hydrodynamic pressure gradients to circulate lubricant across the cylinder wall.

A master cylinder positions a sealing element to minimize idle stroke during pressure equalization.

Juxtaposed protrusions and recesses create a radial gap that discharges foreign matter from the oil pressure side, preventing clogging in hydraulic units.

A piston ring applies a thin PVD top layer over a nitrided base to reduce joint edge fracture while maintaining wear resistance.

Tilted relief ports in master cylinder pistons collide with brake fluid to reduce negative pressure and prevent cup seal shearing during emergency braking.

A segmented brake booster piston uses a gasket-valve to prevent fluid leakage during servo-controlled braking operations.