Plungers TRIZ Cases

A circumferential depression in the piston top land absorbs combustion stress, reducing tensile loads on the ring insert bonding layer.

An undulated silver alloy coating on the piston skirt retains lubricating oil while reducing sliding resistance between the piston and sleeve.

Asymmetric drive nut profiling prevents plastic deformation in brake caliper pistons, blocking unauthorized resetting movements.

Segmented pin and fastener design reduces joint complexity while maintaining strength to prevent seizure under severe loading.

A lobed drive shaft profile provides constant velocity during the compression stroke, resolving non-constant velocity issues in high pressure fuel pumps.

Composite piston assembly uses annular metal insert to resist deformation under high pneumatic pressures while maintaining low weight.

Interlocking ducts deliver pressurized lubricant to the piston sealing area, preventing metal intrusion and reducing consumption.

Multi-level latching prevents disengagement under impact forces, ensuring reliable operation and simplifying assembly.

A groove forming tool creates intersecting axial and circumferential grooves on metallic workpieces through sequential axial movement and rotation.

Polyamide-imide coatings reinforced with carbon fibers dissipate frictional heat, resolving substrate adhesion trade-offs during mixed friction startup.

Dimples in the resin coating retain oil to prevent wear under high pressure.

Segmented piston rods create variable chambers that adjust force and speed automatically, reducing fuel consumption in excavators.

A diamond dispersed chromium composite coating protects diesel engine pistons from friction and cavitation damage.

Sealed air gaps between upper and lower crowns minimize thermal conductivity, preventing component separation during reciprocating motion.

Fluid bearings in piston engines use self-centering forces from blow-by gas to manage clearance gaps, reducing friction and heat transfer losses.

A piston bearing surface applies a composite overlay design to resolve friction trade-offs at elevated temperatures, ensuring reliable sliding performance.

Nadir pockets in piston pin bosses shift force application toward the center, reducing tension and weight while extending service life.

Grooved contact surfaces on an assembled piston upper part reduce frictional wear without expensive coatings, managing high ignition pressures.

A piston assembly uses a peripheral cooling gallery and an inner collar to circulate coolant.

Integrating the idler recoil assembly as a single unit simplifies housing installation and prevents misalignment during track roller frame manufacturing.

Applying pressing stress to a piston heat insulating layer increases tensile resistance, preventing cracks and peeling during engine knocking events.

Pre-shaping a piston blank during forging reduces cutting machining on upper and lower parts, lowering production costs while maintaining precision.

A self-retaining anti-rotation clip uses spacer plates to secure a spherical bearing rod end.

A piston design featuring an upper crown of low thermal conductivity material joined to a lower steel crown.

Emergency guiding elements attach to piston pin ends to guide connecting rod movement during engine failure.

A kingpin assembly uses a housing and collar to rotationally secure the component while allowing free movement.

A crawler track tensioning device uses a linearly guided slide block to transmit force parallel to movement.