Oscillating Piston Engines TRIZ Cases

See how concentric circumferential walls redirect gas flow multiple times to improve oil separa

See how a fixed eccentric distance between shaft and cylinder enables continuous piston rotatio

See how controlled gap dimensions between the Oldham ring and orbiting scroll prevent excessive

A movable discharge-port member opens or blocks housing apertures to match screw compressor volume ratio to operating conditions and cut undercompression.

A single pair of interleaved scroll plates handles both compression and expansion, cutting complexity and cost in waste-heat recovery.

A movable discharge-port plug lets screw compressors adjust Vi to match seasonal conditions, cutting undercompression, energy loss, and noise.

Pressure equalization through a communicating pipe fixes the scroll or piston stop position, preventing expander restart failure in refrigeration cycles.

A split oil separator chamber vents trapped gas through an inter-member passageway, preserving oil storage and simplifying compressor production.

A four-layer chromium and amorphous-carbon vane coating improves adhesion and cuts wear at the vane-roller sliding interface.

An imide-based refrigerator oil keeps sludge dispersed while protecting aluminum and iron compressor sliding parts from wear and seizure.

Pulse-width-modulated unloading valves vary compressor capacity to improve frozen-range temperature control while avoiding damaging high pressure ratios.

A single gear assembly transmits torque and pumps fluid, cutting separate components and leakage points in drivetrain systems.

Annular friction plates and hydraulic brake release lock an oscillatory rotating body smoothly while reducing size and lock pin load.

A moving seal carrier absorbs radial distortion to limit friction and leakage, helping a rotary actuator deliver constant torque across stroke.

A grooved tooth cutting edge removes pump-body chips during running-in, limiting plastic deformation while preserving quiet, efficient operation.

Friction plates around the rotation restricting shaft deliver compact, automatic oscillation locking with reliable braking torque.

An internal cavity and fluid passage in the slide valve absorb suction-side pulsations, cutting compressor vibration and noise.

Pressure relief valves stop bearing lubrication at low pump pressure, cutting parasitic loss while preserving high-load flow and pump life.

An arcuate piston and moving seal carrier maintain constant torque, reduce friction, and improve fluid power use across wide rotary motion.

Opposed spiral oil grooves and a screw oil pump maintain lubrication in forward and reverse compressor rotation, reducing wear and energy loss.

Axial flow pathways and annular sealing rings create isolated pressure zones in a hydraulic motor disc valve, cutting machining complexity and flow loss.

Arcuate pistons and a moving seal carrier keep rotary actuator torque more uniform while limiting radial deformation, friction, and fluid loss.

A crescent internal gear pump uses a shim to establish precise clearance between the end cover and gear housing.

A rotary engine piston vane self-aligns using secondary exhaust pressure against a pedal block to ensure proper orientation for the next cycle.

Resilient coupler stabilizes torque transfer while compression bypass port enables Atkinson cycle for higher expansion ratio.

A cylindrical shell receives an adhesive treatment layer before elastomeric material injection to form a bonded stator profile.

Segmented rotor pads with anti-friction surfaces reduce wear at casing interfaces, maintaining sealing efficiency without replacing the entire rotor assembly.

A self-adjusting gear pump uses pneumatic pressure to control closing force in ice cream freezers.

A scroll compressor thrust plate restricts floating displacement via a pinned mechanism, preventing excessive pressing force on the wrap tooth top.

Strategic placement of a biasing passage relative to bypass porting optimizes fluid handling and pressure distribution during compression.

Segmented stator portions allow quick rotor extraction, resolving clogging risks and improving sanitary integrity in viscous material handling.

Resonance passage and space attenuate pressure pulsation in screw compressor economizer circuits, reducing noise without increasing pressure loss.

Pressing means applies force between gear tooth tips and seal surfaces, suppressing displacement and reducing fluid leakage in the closing region.

A floating apparatus for scroll compressors distributes acting force to improve sealing and integrates temperature and pressure protection mechanisms.

Nested cylinder elements in the insertion space reduce installation space while managing device complexity through structured integration.

A vane pump air passage design with a check valve and orifice controls gas flow to prevent lubricating oil from entering the pump room.

A compressor oil separator integrates a gas release passageway between forming members to extract separated gas from the storage chamber.

Encapsulating a silicon carbide wear-resistant layer inside a shrink-fitted steel shell stabilizes the brittle ceramic against internal pressure cracking.

Retractable rotor copper rods convert sliding friction to rolling motion, preventing jamming from impurities and enabling high-temperature operation.

Axially extending grooves in the stator housing mechanically engage the polymeric sleeve to secure the interface.

Segmented alignment pins and seal members in scroll compressor holes block high-temperature fluid leakage.

Variable face clearance adjusts via differential thermal expansion between rotor and housing materials.

Segmented recess portions in a vane pump cam ring selectively pressurize vane grooves to reduce rotation torque and prevent oil leakage.

Stretched gear root geometry increases carry-over volume to suppress vapor bubble formation in pump systems.

A cam-driven differential controls piston motion to eliminate mechanical shock and deliver constant output torque.

Non-planar cam ring topology distributes surface pressure uniformly, reducing wear peaks without complex rolling support mechanisms.

Base leakage cross-sections on the sealing element compensate for axial gap width changes caused by temperature and wear, maintaining accurate delivery volume.

Spill passages prevent volumetric efficiency loss from fluid leakage by maintaining consistent hydraulic pressure in internal gear oil pump chambers.

Hermetic scroll compressor uses intermittent oil return to maintain intermediate casing pressure for reliable lubrication.

Offset scroll wraps increase structural strength and rotation balance, reducing thrust load on bearings.

A screw compressor clutch disconnects the driving machine from the main body to eliminate idle power consumption.

Hydraulic regulation means enable internal fluid recirculation between pump cavities to stabilize operating conditions.

Segmented thrust plates with localized fluororesin coatings prevent coating separation under repetitive thrust loads, maintaining lubrication and durability.

Rigid support and flexible sliding seals on the vane head reduce vibration and pressure build-up, improving rotational torque.

A gerotor assembly uses an oil groove and gear passageways to transfer scavenge oil for lubrication.

A powered rotor oil pump transfers lubricant from containers to compressors using a drill-driven mechanism.