Internal Combustion Piston Engines TRIZ Cases

Electric heating device raises coolant temperature to heat charge air, preventing condensate formation and compressor damage in turbocharged engines.

A bursting safety device opens a pressure relief path in an exhaust stream to release upstream gas pressure.

A variable valve actuator uses a low-pressure relief valve to release fluid from the housing chamber when internal pressure drops below a set threshold.

A twin volute turbine assembly uses a movable valve to direct exhaust gas flow through sequential channels.

A bypass system diverts compressed air to after-treatment modules, maintaining optimal temperature and oxygen levels for efficient pollutant reduction.

A heat exchanger header tank centers on a base groove to solder separate coolant circuits, eliminating partition walls that increase manufacturing complexity.

Diverting hot exhaust gas via a bypass line heats the urea decomposing device, resolving low-temperature NOx removal limits without extra fuel.

Varying aperture dimensions along the intake chamber equalize airflow distribution, resolving inconsistent scavenging efficiency in uniflow-scavenged engines.

Segmented piston heads use compression conduits to deliver fuel, resolving contradictions between power stroke duration and compression efficiency.

Bottom cover ribs position over drain holes to hinder air flow and reduce noise leakage from the casing.

A wastegate valve directs exhaust gases onto a catalytic converter monolith to accelerate warm-up and reduce emissions during engine startup.

An engine controller detects piston oil-up and drives an oil pump to remove oil, preventing carbon formation and valve damage.

A line insert restricts flow cross-section to trap air bubbles, enabling complete backsuction of aqueous urea solutions and preventing freezing damage.

Segmented nozzle arrangement reduces piston impingement and soot formation while maintaining combustion stability during cold start operations.

Integrating high and low temperature catalysts reduces device complexity and exhaust pressure while maintaining reliable nitrogen oxide purification.

Segmented shield design resolves reusability versus heat retention trade-offs by enabling repeated removal without degrading thermal insulation.

Segmenting compression into high-speed and low-speed stages reduces mechanical stress on the electric motor and prevents compressor surge.

A thermal energy conversion unit uses sinusoidal conduits to regulate fluid flow between heat-exchange modules.

Segmented flow regulation separates upper and lower valve airstreams to prevent mixing turbulence and reduce intake noise.

Hollow pivot frames nest control parts to protect them from debris without adding weight or compromising vehicle stiffness.

A rigid radial-compressible component extends into the injector supply opening to accelerate fluid flow and homogenize delivery.

A dry 3-way catalyst reduces nitrogen oxides in gas turbine exhaust by utilizing low-oxygen conditions created through exhaust gas recirculation.

A generative dialog model applies iterative safety specification updates to align output replies with target standards.

Ammonia sensing feedback drives adaptive learning of SCR target theta values, detecting component degradation through periodic perturbation diagnostics.

Arrangement consolidates exhaust components on the engine block side, reducing temperature and pressure losses while simplifying sensor mounting.

Inverting standard port timing prevents fresh charge mixing with exhaust gases, ensuring clean discharge and stable efficiency across varying speeds.

A heat insulator on the EGR valve body thermally isolates the component from exhaust gas flow.

Segregating the wastegate to one scroll path suppresses pressure loss from flow disturbances while maintaining overspeeding suppression.

A vehicle particle filter introduces ash using a combustible carrier material placed on the input side of the filter body.

A fluid flow network balances exhaust distribution between parallel thermoelectric generator ducts using a movable reactive member to prevent overheating.

An electric motor-generator drives compressor and turbine shafts via separate epicyclic gear trains to enable independent rotational speed regulation.

A truncated-cone flow adjustment member with ventilation holes guides exhaust gas through a mixer chamber to enhance urea water hydrolysis efficiency.

Elastic arms adapt to varying diameters for insertion, while a locking retaining element stabilizes the structure during pull-out to prevent slipping.

A vehicle exhaust gas-purifying system monitors catalyst performance using nitrogen oxide sensors and processing units to maintain emission compliance.

Cooling jacket lines insert opening in rotary engine stator body to circulate coolant and dissipate heat.

Alkaline-earth doped precious metal layers suppress hydrocarbon poisoning to enhance NOx reduction under rich atmospheres.

An exhaust restriction portion stabilizes gas flow while a double-circle coolant passage prevents turbulence and local boiling.

Pre-drilled housing tabs enable bolt-through installation without drilling, preventing vehicle frame damage.

Pyrochlore ceria-zirconia in the lower layer boosts low-temperature oxygen storage while suppressing hydrogen sulfide emissions.

A coaxial needle valve fuel injector switches spray patterns to optimize combustion, resolving soot and NOx formation challenges in common rail systems.

A closed loop control system adjusts hydrocarbon dosing based on real-time exhaust temperatures to manage particulate filter regeneration.

A control apparatus manages engine restart timing using transmission ratio detection to ensure smooth vehicle start performance.

A hydrogen production system integrates an internal combustion engine with a partial oxidation catalyst to generate electrical power alongside scalable hydrogen output.

Tuning a reed valve to resonance frequency amplifies negative pressure, increasing secondary air supply without adding complexity.

Complementary convex and concave piston geometries create tumble motion to resolve swirl-driven heat loss and incomplete air-fuel mixing.

A ceria-zirconia composite oxide incorporates lanthanum, yttrium, or praseodymium to stabilize the pyrochlore structure.

A secondary air injection method synchronizes desulfurization of NOx storage catalysts with particulate filter regeneration in exhaust ducts.

A dual-layer oil separator captures oil mist using a spaced cylindrical filter design.