Internal Combustion Piston Engines TRIZ Cases

A cobra-head air intake port design uses curved surfaces to enhance airflow efficiency.

A disc spring seal shields gaps between nozzle rings and bearing housings, preventing exhaust gas leakage that disrupts turbine flow.

A high pressure fuel pump maintains internal lubrication through controlled low stroke operation.

A biasing member and retainer constrain the yoke within the housing interior to eliminate free play caused by exhaust pulsation.

Asymmetrical piston crown protrusions redirect fuel jets radially to improve combustion mixing.

Dual vibration decoupling segments damping externally and internally, preventing friction wear and slow response times in engine-mounted actuators.

Movable heating units compensate for thermal expansion to maintain mechanical stability and prevent stress concentration in the exhaust system.

Multiple bursting disks arranged in series rupture at defined pressures to relieve clogged exhaust back pressure and protect the internal combustion engine.

A control system calculates spatially dependent surface coverage on an SCR catalyst to adjust reduction agent injection timing.

Screw-nut mechanism compensates assembly tolerances, simplifying turbocharger regulating unit calibration.

Integrated process devices within the container eliminate stationary transfer risks, enabling safe direct fuel delivery to ships and power units.

A heated shell and bypass duct atomize liquid exhaust gas cleaning additives onto an outer surface for rapid vaporization.

Electronic control modules manage natural gas metering and rapid thermal activation, resolving reliability issues in heavy-duty emission compliance.

Inter-stage cooling and a three-way catalyst reduce ammonia slip while maintaining NOx and CO conversion efficiency.

A cylinder gas recirculation system uses pressure differential driving to enhance in-cylinder swirl ratio and improve combustion performance.

A controller inhibits automatic engine starting to ensure driveline wheel mode actuator engagement.

A porous ceramic fluid heating component integrates a continuous conductive coating layer to enable rapid induction heating of passing fluids.

Angled anisotropic protective sheet prevents positional differences and gaps during exhaust gas sealer assembly.

Inlet core plate fluid flow restrictors define passages with varying cross-sections to resolve uneven air distribution among core tubes.

Punching holes in the connection pipe diffuse exhaust gases, preventing output valleys while maintaining purification efficiency.

Isolated heat exchangers vaporize cryogenic fuel using engine waste heat, resolving temperature control trade-offs while improving mechanical power output.

Microcomputer drives switching element to rapidly change primary coil current, stabilizing ignition timing and preventing excessive heat in the secondary coil.

A servo-controlled gearbox system manages clutch engagement and engine torque during vehicle start-up maneuvers.

Segmented pipe and adapter elements with matching thermal expansion coefficients reduce mechanical stress during installation.

Carbon dioxide treatment decomposes thermally aged barium cerate compounds, restoring nitrogen oxide storage capacity without damaging noble metal centers.

A hybrid diagnostic method transitions from passive monitoring to intrusive testing using upstream and downstream oxygen probes.

Segmenting the cooling network into a manifold and bank-specific coolers lowers plenum temperature, increasing intake air density for better combustion.

A roots-type supercharger inlet port configuration expands flow passage dimensions to increase air movement through meshing rotors.

A current shunt circuit diverts excess current around the solid-state switch to prevent overheating and component damage.

A heat exchanger uses a horn-shaped cylindrical member to guide fluid flow into a honeycomb structure.

A single-shaft turbocharger uses two parallel-flow first-stage centrifugal compressors in series with a second-stage unit to manage high volumetric flow.

Electrolyser converts liquid urea into gaseous ammonia to bypass freezing bottlenecks and enable continuous SCR operation in cold conditions.

An integral exhaust gas recirculation valve design uses a spool mechanism to control multiple outlet passages within a single housing unit.

Integrating a liquid coolant channel into the actuator housing reduces thermal stress on the electric motor while simplifying manufacturing complexity.

A boss portion within an intake manifold divides and disperses incoming air to ensure uniform flow across the intercooler surface.

A method supplies control oil and test gas to an injector valve to check for leaks through nozzle openings.

Reversing turbine rotation clears liquid-phase working fluid, preventing cavitation damage and maintaining gas phase integrity.

Radial protrusions reduce crossflow and guide hydrogen jets to resolve sonic flow direction control contradictions.

A saddle-driven vehicle exhaust positions the catalyst laterally offset from the cylinder exhaust passage centerline to improve purification performance.

A heat exchanger guide member with an inclined portion directs fluid flow paths through asymmetric resistance.

Adjustable swirl vanes in a turbine outlet cone direct exhaust gas flow to optimize thermal management.

Slanted roller interfaces in a planetary traction drive counteract axial thrust forces on a turbo shaft, eliminating complex bearing assemblies.

Rim seals prevent bypass flow, boosting thermal efficiency and reducing vibration.

A control apparatus diagnoses recirculation valve malfunctions by monitoring intake air flow fluctuations when the throttle valve is closed.

An integrated fuel supply device merges a pressure reducer and filter into one monolithic body, eliminating intermediate tubes to reduce pressure losses.

A cyclone generates a high-velocity vortex to flash-evaporate atomized fuel into the heated inlet airstream.

A bootstrap charge pump gate drive module generates elevated voltages to switch field effect transistors in intake air heating systems.

A flow blocking plate directs exhaust gas through smaller channels to reduce fouling and maintain thermal performance.

Angled egress component directs cooling water flow away from the gearcase assembly, reducing backpressure that degrades engine power output.

Electric heating means raise pollution-control device temperature to trigger particulate combustion during electric vehicle operation.