Rotary Piston Pumps TRIZ Cases

Opening an air hole just before suction ends reduces pump-chamber negative pressure, cutting hydraulic amplitude, noise, vibration, and cavitation.

An accessory flow path diverts excess pump fluid across a thermistor, enabling accurate real-time temperature sensing without disrupting main flow.

Curved lubrication grooves route hydraulic fluid between the spool and distributor plate to cut friction, absorb heat, and limit leakage under pressure.

A rotatable cam ring lets a dual-input gerotor pump vary output without a planetary gearset, cutting energy waste and package cost.

Segmented high- and low-pressure zones route discharge oil to bushing recesses, sustaining lubrication and preventing galling under shaft loads.

Outer-surface ribs stiffen a resin oil pump cover against heat and pressure, keeping side clearance stable and reducing leakage.

Relative rotor-stator displacement forms an integrated end stop that adjusts flow independently of speed while cutting dead volume and friction.

A raised inlet dam keeps oil in the pump suction path, preventing air evacuation delays and enabling immediate lubrication at machine startup.

Dimples, a radial inlet port, and a return channel cut oil pump wear while raising volumetric flow and lowering energy demand.

A bypass flow path keeps fluid moving past a thermistor, enabling accurate temperature sensing in submerged pumps without disrupting main flow.

A raised inlet dam retains oil near the pump rotor, improving suction at startup and ensuring immediate lubrication and cooling.

An elastically biased guide element keeps a screw compressor piston rod aligned, damping vibration and preventing tilt-induced jamming.

A vane cell pump with two gerotor pumps cuts dry-sump pump count and installation height while maintaining oil supply for gears and cooling.

Compressed elastic elements hold the stator ring in place, cutting hot-condition leakage and ticking noise in engine lubricant pumps.

Asymmetric skeletal stator lobes with variable thickness improve sealing, power output, and vibration control while easing helical stator fabrication.

Additive manufacturing builds helical mud motor stators with skeletal lobes to improve sealing, cut weight, and reduce vibration.

Curved deflection areas in vacuum pump heat-sink recesses prevent airflow stagnation, cut noise, and simplify machining.

Axially offset coils and a 3D magnetic flux path let this integrated transmission pump regulate flow in tight axial space.

Elastic guide elements prestress the piston rod in a screw compressor, preventing canting, jamming, vibration, and noise.

A coaxial fluid connector lets one automotive oil pump rotate to match different plug orientations, cutting variant count and mounting constraints.

Routes control fluid from the adjustment valve back to the suction area, cutting contamination, energy loss, and extra return-line complexity.

Pressurized fluid routed into stator grooves keeps rollers in contact with the rotor, reducing low-speed cogging and torque ripple.

Retaining oil in gerotor gear cavities preserves lubrication during loss-of-prime and reverse operation, reducing sump and packaging constraints.