Combination Engines TRIZ Cases

See how a roticulating design merges pump and turbine into a single unit, enabling efficient he

See how a dual-axis rotor with magnetic pivoting enables efficient heat pump and engine operati

A shared variable frequency drive stabilizes multiple hydroelectric units in sequence, cutting grid connection time and improving network stability.

Sequentially coupling multiple hydroelectric units through one variable frequency drive speeds grid connection and avoids extra drive investment.

A shared drive base switches between plunger pumping and power generation to cut site noise, save space, and avoid well site paralysis.

An eccentric pipe section rotates to absorb turboengine installation tolerances while preserving tight, high-pressure connections and reducing on-site work.

A bypassed steam path and superheater keep injected steam dry during takeoff and idle, improving heat absorption and engine efficiency.

A bypass passage reroutes steam around the turbine during idle and takeoff to prevent condensation and maintain steam quality.

Supercritical CO2, inter-stage cooling, and mass control address bulky, slow-starting waste heat recovery while supporting compact power generation.

An oil pan confined to one engine side frees space beneath the block for electrical components in flying apparatuses.

A recuperator and segmented rotary engines execute isothermal and isobaric processes in a closed cycle to improve practical efficiency.

A detonation combustion tube uses periodic fuel injection and ignition to boost aircraft power without sizing the engine for continuous maximum output.

This case uses interburner and turbocompressor flow paths to maintain propulsion and electrical power when components fail.

A support member restricts relative movement between the compressor case and inlet case to maintain rotor alignment and simplify plumbing access.

A composite piston machine combines rotary and oscillating movements within a single mechanism to achieve high volumetric performance.

A compressed air plant uses industrial heat to drive an expansion unit that powers the compressor directly.

A gas turbine power system coordinates electric machine power draw to maintain constant rotational speed during load changes.

Single flow steam turbine routing maintains blade length to reduce centrifugal force and bending moment during high pressure expansion.

Selective coupling switches between shafts based on engine speed, maintaining compatible rotation ranges for accessory gearbox machines.

Segmented vaned impellers minimize mechanical resistance and optimize heat transfer for low-temperature energy sources.

Electric motor drives accessory belt system using generator or shore power, eliminating fuel consumption and emissions during primary engine idle.

A lubrication-free rotary piston engine uses counter-rotating units to balance radial loads and minimize friction losses.

Moving the metallic-ceramic joint between bearings reduces thermal stress gradients, enabling higher operating temperatures and improved engine efficiency.

Adjustable working-fluid ports enable independent control of rotation rate, mass flow, and pressure in rotary expansible chambers.

Segmented housing parts rotated 180 degrees drive counter-rotating piston plates to resolve space occupancy versus mass balance trade-offs.

Segmented inlet and intermediate cases restrict relative movement between compressor portions, maintaining rotor tip clearances during fan section operation.

Electric motor maintains controlled windmilling speed to reduce vibration and drag after engine failure.

A hybrid jet engine converts ram air kinetic energy via a bladeless turbine to drive auxiliary fan blades, reducing fuel consumption and environmental impact.

Segmented casings use Ni-based alloy welding for high-temperature zones, lowering manufacturing costs while maintaining thermal efficiency.

A rotary gas-cycle system integrates an expander and compressor via a direct drive mechanism to transmit rotational energy between rotor assemblies.

A rotary piston assembly uses a shutter disc to partition cylinder spaces and manage fluid flow between connected devices.

Segmenting the gas turbine into independent compressor and turbine shafts allows rapid start-up without grid synchronization delays or HRSG purge requirements.

A twin-screw turbine engine employs a central orifice and valve system to control gas transfer, resolving inefficiencies in combustion timing.

Pivoting doors divert primary flow upstream to reverse thrust, eliminating the need for downstream movable devices in constrained nacelle geometries.

A wind deflecting structure divides airflow into accelerated paths, boosting turbine velocity and power output without high-altitude installation complexity.

Distinct cam lobe profiles synchronize valve timing across deactivatable and non-deactivatable cylinders.

Three bearings isolate generator vibration from turbine shaft flexing, reducing assembly weight and easing maintenance.

Axial sliding interturbine duct isolates bearings from shear loads, resolving rotor containment complexity.

A hinged rocking arm vane mechanism connects to an eccentrically placed rotor within a cylindrical housing to form working chambers.

A reverse-core turbofan architecture uses a nested gas generator and hollow struts to drive fan-tip turbines.

Independent generator speed control across three spools maintains high electrical efficiency at part-load conditions, reducing energy production costs.

Contoured lobe geometry balances radial forces to reduce component wear while transferring motive force from charging fluid to feed fluid.

Diverting internal steam through a bypass line heats casing flanges, reducing startup time without increasing external energy consumption.

Triangular stator cavities drive elliptical pistons in planetary motion to transfer gyroscopic moment through a geared rotary element.

Counter-rotating inner and outer compressor airfoils driven by a gear system enhance compression efficiency while reducing engine length and weight.

A wind turbine rotates a conductor in a magnetic field to generate heat for steam production.

Stoichiometric exhaust gas recirculation eliminates excess oxygen from turbine exhaust, enabling effective NOx reduction and carbon capture.

A multi-stage rotary piston machine uses a one-piece truncated hemisphere housing to maintain precise rotor gaps.

Cascading effluent energy recovery system powers multi-stage compression via expansion turbines, reducing waste energy recapture losses.

A variable swept area mechanism adjusts vane depth to handle high tidal speed variations without extensive site characterization or custom design.

A stoichiometric exhaust gas recirculation system manages combustion temperatures in power plants.