Plungers TRIZ Cases

Spaced aluminum-based particles in an inorganic binder create an insulating thermal barrier coating that improves adhesion and reduces spallation.

A conical sealing surface simplifies plastic coating between the slider shoe and ball head while preserving hydraulic flow and reducing friction.

Rotating milled notches in the piston ring groove replace drilling to improve oil drainage while cutting machining time and cost.

Radial seals and axially moving pistons meter medication from a flexible reservoir while avoiding rigid-reservoir calibration complexity.

An offset minimum inner diameter and groove bead interface cut piston mass while preserving rigidity and lining tolerance flexibility.

Internal ribs, reduced wall thickness, and a shifted joining region cut piston weight by at least 10% while maintaining strength and lowering noise.

Induction-heated flange preforming enables near-net piston blanks with closed cooling channels, less material removal, and repeatable dimensions.

A forged steel oil gallery follows the combustion bowl shape to keep crown wall thickness uniform, reduce hot spots, and prevent piston overheating.

Segmented piston magnets with ring-shaped yokes create uniform circumferential magnetic flux while reducing size changes across cylinder diameters.

A gravity-cast aluminum piston alloy cuts copper and nickel to lower weight and cost while preserving heat resistance and fatigue strength.

A gravity-cast aluminum piston alloy balances heat resistance, fatigue strength, fine microstructure, and low porosity through controlled element ranges.

Axially offset bearing journals and a ridged piston bowl improve lubrication, reduce wear, and limit combustion heat losses.

An eccentric piston pin, springs, and a hydraulic lifter vary compression ratio with engine load to improve combustion and avoid pre-detonation.

A pin-through-clearance fastening lets the ram adjust to chamber wear, limiting side loads, leaks, and connection failures under high pressure.

An oil-free inner breathing chamber and coupled crankshafts cut two-stroke contamination while improving gas flow and combustion timing.

Segmented top-land grooves with tapered depth draw flame into trapped fuel, cutting uncombusted exhaust and improving combustion stability.

Selective reheating of the piston flange enables near-net forging of a closed cooling channel while reducing core machining and mass.

A domed double cup brake piston uses quasi-elastic deformation to absorb transverse forces, cut hydraulic volume, and improve fatigue strength.

A non-axisymmetric oil gallery outlet layout directs oil to the anti-thrust side, improving piston lubrication, cooling, and wear protection.

A groove bead projection replaces complex edge-strip interfaces in a cold-formed steel brake piston, cutting weight and cost while keeping stiffness.

Cylindrical bodies inserted into a shared annular groove create a form-fitting piston-rod coupling that carries high tensile and compressive loads.

Discrete piston magnets with annular yokes generate a uniform full-circumference magnetic field without diameter-specific ring magnets.

Axially compressing ribs and recessed sidewalls keep plunger contact area stable, reducing friction variability in viscous drug delivery.

Multi-temperature and incremental aging create θ′ precipitates that keep cast aluminum alloys stable and strong above 250°C at lower cost.