Internal Combustion Piston Engines TRIZ Cases

Composite Pd-Rh catalyst particles prevent thermal grain growth via controlled lattice strain, preserving exhaust purification performance.

A seawater circulation system merges cooling and exhaust gas processing functions into a single sea chest and discharge pipe network.

A layered emission control device combines oxidizing catalysts with hydrocarbon traps to manage exhaust gas composition.

Concave-convex inner walls retain condensing water droplets and soot, preventing external fouling while maintaining low exhaust resistance.

A fuel preheater system transfers exhaust heat to vaporized fuel through a dedicated heating tube and mixing chamber.

Segmenting the induction system into a supercharger and turbocharger maintains constant torque across varying engine speeds.

Non-overlapping scroll passages and a flow-rate control valve direct exhaust gas to improve turbine efficiency at low engine speeds.

Removing gold from inner pump electrodes prevents noble metal evaporation and adhesion, maintaining long-term NOx detection accuracy.

A balance pipe assembly with a venturi section creates suction that prevents gas reversion and improves scavenging at higher engine speeds.

A tapered tubular body routes air to the cooler within an integrated intake unit, resolving spatial constraints while maintaining heat dissipation efficiency.

An integrated distribution assembly maintains liquid propane below boiling temperature, reducing EVAP emissions and start time delays.

A wall-flow particulate filter uses a gradient catalyst layer thickness to reduce pressure loss while maintaining toxic gas purifying performance.

An electric air pump calculates exhaust air mass flow rate using duty cycle, amperage, and voltage activation parameters.

A support plate integrates heater and line connections into the tank floor to maximize usable volume.

Audio output model segments speaker embeddings to prevent speech neutralization in multi-speaker text-to-speech synthesis.

Segmented permanent magnets create intense magnetic fields that enhance combustion efficiency and reduce hydrocarbon emissions in fuel systems.

A method detects urea deposits by comparing measured NOx quantities against theoretical values to trigger targeted cleaning.

Pressure-triggered injection with preheating solves incomplete evaporation in low-temperature exhaust streams.

A pivoting flap valve system eliminates pistons in a rotary internal combustion engine to boost power density.

A metering pump detects air in the delivery line by monitoring the movable pumping element position against a predetermined limit.

Controller estimates additive temperature using electrical characteristics of existing components, eliminating redundant sensors to reduce system complexity.

A gas monitoring system uses voltage pulses to create plasma and detect breakdown for pressure determination.

A shared drain rail collects liquid and gaseous fuel leaks from injection valves, venting gas to prevent pressure buildup on components.

Segmented heating sections with independent controllers adjust reducing agent temperature in different vehicle regions, preventing freezing and degradation.

An integrally cast double-walled fuel supply line element eliminates welded seams to prevent fuel vaporization emissions from plastic inner lines.

A lambda sensor control unit differentiates heating temperature and time to remove electrode poisons based on signal output.

A dual leg aftertreatment system calculates real-time conversion efficiency using NOx sensors to detect flow imbalance across exhaust legs.

A crankshaft stop and setscrew arrangement limits rotation of a variable geometry turbine control ring, reducing downstream wear from harsh exhaust conditions.

Ceramic foam flow guide concentrates exhaust velocity inside corrugated ducts, preventing urea derivative accumulation that stiffens vibration isolation.

System monitors air parameters and modifies engine operation to prevent suboptimal equivalence ratios during particulate filter regeneration.

Reforming reactor arranged within an engine exhaust manifold utilizes waste heat for fuel reformation.

Dynamic bypass control adjusts spark duration to reduce electrode erosion and heat loss while maintaining reliable ignition across varying engine speeds.

Stacked filters with varying opening areas absorb exhaust noise while preventing clogging and condensation caused by rapid pressure drops.

Conduits link inlet ports across cylinders to balance pressure and reduce compression losses against turbocharger backpressure.

An H2O trap adsorbs water vapor to delay hydrocarbon release from upstream exhaust components until downstream catalysts reach light-off temperature.

Baria doped zirconia supports enhance rhodium dispersion to boost NOx reduction efficiency while maintaining hydrothermal stability.

A rotary machine design relocates sealing points to the outer shell while routing fluid through unidirectional rotor ports.

Tetragonal zirconium cerium oxide composition lowers reducibility temperature while maintaining high specific surface area.

Variable volume heat engine uses distribution mechanism to transfer thermal energy from exhaust gases to working gas.

A urea concentration identification device uses single-pulse heating to measure fluid properties via thermal response.

Segmented cooling circuits control charge air and lubrication oil temperatures independently.

Integrating the EGR pipe into the exhaust manifold eliminates differential thermal stress on cooler flanges and reduces assembly complexity.

Segmented manifold arrangements isolate low-speed and high-speed exhaust flows, preventing backpressure while maximizing mass flow capacity.

Gradient pore diameters in cell walls maintain high particulate-matter-capturing ratios while preventing excessive pressure loss during exhaust gas flow.

Segmented curved and straight intake ports guide airflow along cylinder walls to generate swirls, reducing hydrocarbon emissions from incomplete combustion.

Single actuator ring merges individual levers to resolve complexity trade-offs while preventing sticking in high temperature environments.

A heat-emitting hose carries temperature-controlled cooling water in close proximity to urea solution lines.

Spring prestress secures PTC elements via axial guide, reducing assembly complexity while acting as a turbulator for uniform fuel temperature.

A modular intermediate element with adapter plates resolves the contradiction between structural simplicity and installation flexibility in SCR systems.

An exhaust gas control system manages ammonia addition to an SCR catalyst using a temperature increase treatment unit and addition valve.