Oscillating Piston Engines TRIZ Cases

Non-uniform female rotor lobe geometry reduces gas leakage loss through outer diameter clearance while preventing tooth flank separation vibration.

A screw compressor slide valve mechanism uses a third inflow hole closed by the piston to isolate chambers.

Integrated injection pipe throttle design reduces compressor vibrations caused by refrigerant pressure pulsation.

Bean-shaped dowels rigidly hold hydraulic machine body and flange together with minimal relative displacement.

A fluid pump barrier features a bridge with a height transition to facilitate gradual fluid re-expansion.

Segmented nozzles deliver optimized liquid volumes to specific rotor chambers, suppressing temperature rise while reducing stirring work.

Perforated vane coatings store lubricant to reduce friction and leakage loss in single-vane vacuum pumps.

Elevated oil outlet prevents gravity-driven lubricant backflow, eliminating pressure pulsation and operation noise in vehicle vacuum pumps.

A pressurized rotary actuator generates rotational torque via a piston in a chamber.

Multiple hydraulic cylinders impart synchronized driving force to a slide valve for rapid volume control.

Seating grooves with stepped parts and spaced guide pins disperse stress to prevent deformation and noise in orbiting scroll compressors.

Merged bearing and seal flanges eliminate separate fastening, reducing axial span and resolving maintenance complexity.

A friction drive pump assembly uses a clutch and Belleville spring to engage the gerotor only when needed.

Angularly offsetting adjacent rotary combustion units cools hot sections using cold housing areas, reducing thermal distortions and dynamic imbalances.

Offset groove low points ensure complete chamber filling at high speeds, eliminating cavitation noise and wear.

A hydraulic motor clutching mechanism uses a casing duct flow limiter to raise internal pressure and control piston extension speed.

Magnetic gear system transmits torque between rotors without mechanical contact, eliminating lubricant contamination and wear in screw compressors.

A vane liner positions a pre-pressurization opening upstream of the discharge chamber to seal suction flow before fluid transfer.

Segmented rotor case bodies enable front-loaded seal replacement, resolving maintenance reliability trade-offs while preserving pumping volume.

An equal-walled outer rotor in a gerotor pump allows fluid passage to handle high gas volume fractions in wellbore applications.

A rotary vacuum pump integrates a compensating channel and valve to manage oil flow between the discharge and oil chambers.

A variable output gerotor pump adjusts volumetric displacement via a rotatable control ring to match lubricating oil flow rates.

A movable buffer member sits between the shaft and eccentric bush recess to prevent metal-to-metal contact.

Segmented pump and pressure housings decouple deformation from the rotor assembly, resolving complexity trade-offs in single-well boosting.

Dual-side bearing support eliminates bending deflection in the gear shaft, reducing noise and wear while maintaining precise alignment.

A vane-rotary gas compressor uses a dynamic back-pressure groove to project vanes against the cylinder wall.

A flow guide device directs working medium from pressure holes to under-vane areas in vane pumps.

Non-helical rotor and stator elements in a downhole motor use sequential valve pulses to reduce slip losses and stator elastomer destruction.

Elastic yielding contact bands on oscillating radial cylinders reduce external dimensions while maintaining thrust distribution and flow rates.

Rotating stator segments offset minimum volume chambers to manage shaft speed and torque without complex reduction systems.

A variable displacement oil pump adjusts an internal member via a guide pin nested in a tapered long hole.

An electroformed metal stator tube with a helical lobed profile eliminates elastomeric swelling and heat absorption to improve torque capacity.

Polyimide resin coating with molybdenum disulfide lubricant on screw compressor rotors.

Integrated seal arrangement for rotary engines eliminates gaps between members, preventing gas leakage into the oil system and reducing contamination.

A variable-displacement lubricant pump uses a thermostatic element to actuate a movable outlet opening for dynamic volume adjustment.

Variable rotor cross-section maintains equal chamber volumes in eccentric screw pumps for optimal fluid flow.

Differential bearing lubrication grooves manage hydraulic fluid flow to suppress leakage without increasing seal member complexity or frictional resistance.

An involute cylinder inner surface paired with hinge-coupled vanes reduces torque and power consumption while preventing chattering noise.

A tangential combustion engine converts piston thrust directly into torque via circular arc-shaped cylinders and spherical pistons.

Segmented guide holes constrain the orbit scroll trajectory, reducing device complexity and weight while maintaining durability.

A two-stage gear oil pump increases flow capacity within fixed housing dimensions.

A progressing cavity gas pump delivers lubricant via conduits to protect the elastomeric stator from frictional heat generated during dry running.

A revolving vane compressor employs a two-degree-of-freedom vane for sliding and pivoting motion within the cylinder slot.

A downhole fluid lifting mechanism moves well fluids from a remote intake to the vertical section using compressed gas pressure.

Auxiliary pumping port maintains flow independent of differential pressure, preventing clogging and ensuring consistent cooling.

A scroll compressor modulation assembly isolates apertures to control capacity.

Radial fluid ports and segmented gears maintain displacement efficiency while minimizing radial dimensions for medical device integration.