Internal Combustion Piston Engines TRIZ Cases

A dedicated compression tube isolates fuel injection from cylinder walls, preventing wall wetting and enabling controlled self-ignition.

A cooling device for an additive injection valve uses a movable member to dynamically adjust fluid passages based on coolant flow rate.

An intermediary platform prevents direct spring contact with the apex seal, reducing wear on the sealing arrangement while maintaining effective pressure.

Sequential backflow of exhaust aftertreatment agent from lower to upper injection lines prevents freezing damage and extends system service life.

Segmenting the precombustion chamber resolves insufficient injector space in high-density engines by enabling oblique component placement.

Supply pipe routes through side members to protect additive delivery from road debris and impact damage.

A sodium-incorporated cerium-zirconium mixed oxide catalyst material synthesized via co-precipitation using sodium carbonate as the precipitating agent.

Segmented nozzle outlets in the sac volume redirect hydrogen flow to stabilize distribution while reducing actuation forces.

Relocating the EGR valve vertically above the exhaust outlet isolates the component from direct thermal exposure, preserving control accuracy and durability.

Segmenting energy recovery between a power turbine and a Rankine cycle system optimizes fuel efficiency across the entire engine load range.

An injection control module adjusts fuel flow based on surface accumulation and release rates to maintain exhaust gas temperature.

Annular grooves in the fuel injector control valve reduce pressure wave influence, ensuring constant closing time and improved injection quantity accuracy.

Merging the intake port partition and inlet pipe mount into a single structure prevents heat absorption by the mold, ensuring proper filling of thin sections.

Simultaneous ultrasonic welding of partition walls seals honeycomb cells, eliminating paste and reducing exhaust turbulence.

A plugged honeycomb structure uses selective plugging in partial cells based on area ratios to optimize particulate matter trapping and structural integrity.

Segmenting compression across identical turbines reduces temperature rise while maintaining high flow capacity through mode switching.

A pre-chamber jet ignition system reduces NOx and particulate emissions by enabling ultra-lean combustion without complex exhaust after-treatment.

A catalytic converter module uses serial catalyst units and a passive exhaust stream dividing element to split the gas flow into two parallel paths.

A bypass valve system routes exhaust gases around the turbine wheel to accelerate catalyst light-off during engine cold starts.

Dedicated drainage passages in the air inlet assembly direct condensate toward intake valves, preventing freezing and maintaining engine efficiency.

Segmented spring-loaded clips near the instant center constrain relative motion between the adjustment ring and vane levers, reducing wear and binding.

Integrating catalyst into exhaust manifold reduces device complexity while improving emission control precision.

A multimode engine control system adjusts liquid fuel supply in steps to maintain constant energy content during mode transitions.

Positioning the metering device between turbine stages cools exhaust gas, prevents fuel recirculation, and ensures uniform mixing for thermal regeneration.

A nitrogen oxide sensor monitors exhaust gas to regulate ammonia injection in selective catalytic reduction systems.

A piston bowl configuration directs fuel sprays away from the cylinder head to improve combustion efficiency.

An abnormality detection apparatus adjusts thresholds based on battery charge level decrease rates to compare actual electrical energy supplied to the electrically heated catalyst.

Optimized intake channel angles create tumble flow to improve air-fuel mixing while minimizing pressure drop.

A gas injector with two sealing regions and a hollow closing element directs fuel through inner and outer outlets for controlled delivery.

Positioning the sensor orthogonally to adjacent exhaust outlets prevents biased detection from one pipe while reducing pressure loss.

A manufacturability analysis system processes integrated circuit design layout data streams to generate router-specific directives for implementing post-layout enhancements.

Multi-wavelength light sources and detectors measure exhaust gas temperature and concentration directly within the duct.

A fuel injector merges primary and pilot paths into a single nozzle tip via a movable check valve member, reducing manufacturing complexity.

Jointly machine guide blades in a mounted ring to minimize gaps with cover discs and improve turbocharger efficiency.

Bolted cartridge fixation minimizes thermal conduction from hot exhaust gases to the bearing housing in variable geometry turbines.

Surface organometallic chemistry grafts transition metals onto ceria supports to create dual site active species.

Rotating catalyst device widthwise and adding an undercover rib directs airflow for cooling while preventing ground interference during banking.

Pressurizing means maintain stable storage tank pressure to prevent pump cavitation at high altitudes.

A supercharger intake duct uses a guide projection to rectify airflow, reducing turbulence and flow passage loss at the 90-degree bend.

Monitoring DPF outlet temperature allows dynamic interruption of regeneration cycles, reducing oil dilution and fuel consumption.

Periodic open and close control of the urea injection nozzle prevents crystallization choking during after-run operations by detecting pressure equilibrium.

Multiple injection ports and stressed band seals reduce back pressure, resolving the trade-off between power output and combustion efficiency.

A combination control assembly uses a dial and turntable to simultaneously operate fuel valves and choke mechanisms.

A honeycomb structure loaded with a transition metal oxide catalyst oxidizes exhaust gas components.

Redirecting concrete truck exhaust into the mixing chamber physically mixes carbon dioxide with fresh ingredients.

A U-shaped decomposition chamber routes exhaust gas around a central thermal management section to maintain reductant temperatures.

Predictive feedback adjusts reductant dosing to minimize slip while maintaining low NOx levels.

Methylethyldiisopropylammonium cation directs SSZ-99 synthesis to resolve selectivity limits in gas separation and hydrocarbon conversion.

Integrating a resistive gas sensor within the converter body enables direct monitoring of NOx emissions and aging without external lambda sensors.