Internal Combustion Piston Engines TRIZ Cases

A bypass valve directs compressed air through a U-shaped cooling part or around it based on engine operating conditions.

Axial loading bolts maintain a controlled gap between nozzle blades and cover ring, eliminating sliding friction that causes premature wear in turboexpanders.

Single volute valve eliminates wastegate actuator complexity while mixed flow turbine wheel maintains efficiency across varying engine speeds.

A control device decreases hydrocarbon supply during mixed fuel combustion to suppress excessive temperature rise in the exhaust purification device.

A twin-vaned nozzle ring assembly directs exhaust gas streams in an interleaved fashion around the turbine wheel circumference.

A hemispherical wastegate plug self-centers against the seat to maintain consistent contact under load.

Sequential mixing openings along a contact wall merge recirculation and inlet channels, improving gas blending without complex manufacturing.

Graduated diffuser openings distribute exhaust gases evenly, resolving flow uniformity issues caused by compact inlet distances.

A zonal catalytic wall-flow filter design distributes distinct catalyst materials across separate substrate zones to optimize exhaust treatment performance.

A particulate matter control system calculates particle number reduction rates to determine electrode failure status.

Segmented ducts align injector orifices with engine passages to improve fuel-air mixing and reduce soot formation.

An adaptive control model adjusts fuel injection flow rates to regulate exhaust stream temperature.

Segmenting the valve seat into multiple radial slots boosts fuel flow by 24% without raising hydraulic loads or requiring larger actuators.

A vented accumulator uses a weir to decouple transfer and dosing pumps, ensuring accurate diesel exhaust fluid delivery.

Locking tongues on the unison ring constrain vane arms at the fully open position, reducing vibration-induced wear and preventing sticking.

A rotating valve member within a bypass housing manages exhaust gas flow, resolving the trade-off between wastegate durability and control precision.

Accumulating soot on ash deposits enables efficient mobilization and reduces flow resistance during active regeneration.

A monitoring apparatus calculates maximum filling level using temperature, pressure, and flow sensors for real-time tank status.

Control system recovers catalytic activation by switching to rich-burn conditions, enhancing methane conversion efficiency from 60% to 96%.

Optimized heat capacity and OSC coating ratios maintain catalyst temperature stability while reducing energy consumption.

Tracking real-time ammonia storage concentration prevents inaccurate estimates that cause inefficient NOx reduction or excess slip in lean-burn engines.

Segmented injection holes direct sprays toward the cavity lip, balancing distribution across combustion zones regardless of timing shifts.

An EMM-controlled sealing valve closes when the engine stops, trapping air as a gas spring to resist water intrusion and protect the exhaust system.

Parallel exhaust routes bypass the SCR catalyst during low temperature operation, preventing hydrocarbon adsorption damage and extending catalyst lifespan.

A gas re-vaporizing system maintains seawater pressure during open to closed loop switching for continuous liquefied gas supply.

Segmented exhaust sections reduce pumping loss and prevent backflow while maintaining uniform cylinder charging.

Regenerates a nitrogen oxide trap via high-temperature lean desorption, preventing engine oil dilution and reducing fuel consumption.

Inclining the engine mounts the exhaust side upward, shortening piping distance to maintain catalyst temperature in tight cab-over spaces.

Integrated fuel tank evaporator maintains fuel temperature below flash point to prevent explosive mixtures in military vehicles.

A frustoconical cutter machines piston valve pockets with a 110 to 120 degree angle between the side wall and bottom.

System detects ammonia slip converter deactivation through sensor feedback, triggering air injection to maintain emission reduction reliability.

A rupture disk device bursts at a defined pressure to divert exhaust gas flow through a parallel branch channel.

Vehicle controller maintains engine ignition state during brake pressurization to ensure auxiliary system power availability.

A controller manages an electric oil pump by predicting traffic light states to optimize hydraulic pressure delivery during engine idle stop periods.

A modular reductant dosing manifold with standardized interfaces enables plug-and-play pump and injector connections across diverse engine platforms.

A spark plug positions its injection hole relative to the main combustion chamber using a dedicated housing and cover interface.

A rotary engine uses a crank dual-slider mechanism to compress gas in sliding grooves and drive synchronous rotary casings.

Partitioning members block radiant heat from exhaust devices, preventing injection device degradation while maintaining reducing agent mixing efficiency.

An exhaust suction line uses a Venturi nozzle to move condensate, preventing corrosion without drain openings.

An override module defaults automated start-stop systems to off via in-line or CAN bus connections.

Two deep-drawn sheet metal sub-shells form a flexible valve housing that reduces material waste and thermal stress in exhaust gas systems.

A composite valve seat merges copper wear resistance with elastomeric sealing, extending injector life by reducing gasket stress.

Segmenting airflow into independent combustion and cooling paths decouples cooling from throttle position, resolving density loss and turbulence trade-offs.

Venturi-shaped inner surface accelerates gas flow through reduced throat diameter, mitigating valve recession while maintaining engine efficiency.

Segmented exhaust gas catalyst units with anchor-promoter enclosure particles maintain noble metal surface area.

Stabilized zirconia shields platinum and palladium from particle growth at high temperatures, maintaining exhaust purification efficiency.

Welded bent portions of outside plates generate elastic stress to press thermoelectric modules against a fluid duct.

Progressive reductant dosing isolates DOC faults by measuring NOx reduction efficiency across temperature phases.