Oscillating Piston Engines TRIZ Cases

Selective steam treatment on one gear pump rotor creates hardness differences that prevent adhesive wear and delamination under high impulsive loads.

A gear pump input shaft assembly uses springs and a retainer plate to bias the shaft axially.

Optimized stator lobe geometry lowers centrifugal forces and elastomer heat retention, extending liner life while maintaining fluid pumping capability.

Electrostatic flocking short fibers seal moving spaces in positive-displacement fluid machines.

A two-stage gear pump uses a speed-reduction mechanism to lower inlet gear rotation and increase fluid pressure.

A counterweight design featuring a variable-sized cavity adjusts mass while maintaining common exterior dimensions.

An engine oil pump uses a plunge pool to generate vortex flux, reducing surging noise by consuming energy during discharge.

Optimized trochoidal parameters prevent addendum cusps, reducing Hertz stress and maintaining mechanical efficiency.

Iron reinforcing plate inside body bore strengthens vane pump cover, preventing distortion and oil leakage under high pressure.

A pressure-adjusting valve regulates vane back-pressure using static discharge signals to ensure reliable rotor contact.

A screw compressor generates rotor profiles by enveloping a rack profile with specific curves to maximize addendum and lobe thickness.

Pivoting paddles retract to avoid debris, maintaining seal integrity in slurry applications.

Rounded gate corners and pre-established tolerance gaps reduce wear from abrasive fluids while preventing leakage.

A lubricant pump uses a proportional valve and dual pressure chambers to regulate delivery output against spring preload.

Segmented helical wheels with an idle tooth balance axial forces, reducing noise and manufacturing complexity in high-pressure pumps.

Curved rotor blade shoes scrape residues from concave pump housing recesses, preventing blockages in solid-liquid mixtures.

Shared journal shaft stabilizes multi-stage gear pump, preventing tooth bounce and bearing oil whirl during reduced pressure operations.

Integrating a cold starting plate as a check valve within the pump housing reduces installation space and prevents oil leakage.

A progressing cavity pump uses magnetic coupling and a wobble stator to rotate the rotor without mechanical seals.

A centrifugal valve mechanically connected to the pump rotor closes at high rotational speeds to regulate discharge pressure.

Segmented suction volume parts with step features optimize scroll compressor refrigerant intake and mechanical cooling.