Internal Combustion Piston Engines TRIZ Cases

A sonic gas inlet valve accelerates natural gas flow to enhance air-fuel mixing, resolving low-load throttling trade-offs that reduce scavenging effectiveness.

Heater adjuster maintains sensing member temperature until environmental conditions stabilize, enabling accurate particulate matter deposition calculation.

Spiral-wound electrical wires in a polymeric hose maintain urea temperature above freezing, preventing solidification without custom fittings.

A porous ceramic particulate filter uses a gradient porosity wall structure to separate exhaust contaminants while maintaining low pressure drop.

A laterally projecting collar on the nozzle inner end welds to the exhaust pipe wall, creating a stable connection with minimal thermal mass.

Half-Heusler semiconductor alloys with optimized silicon-tin ratios boost the figure of merit to improve waste heat conversion in vehicle exhaust systems.

Porous membrane enables gas permeation for pressure equalization, blocking liquid and solid contaminants to prevent internal actuator malfunction.

A suction filter with a constrained intermediate space prevents air bubbles, enabling complete tank emptying and precise dosing without component damage.

Segmented needle valves in a hybrid nozzle enable sequential fuel injection, reducing sac volume and improving combustion efficiency.

Blade-like deflecting elements redirect urea spray away from catalytic converters, preventing precious metal deposits while optimizing evaporation.

Intake variable valve device adjusts tumble flow production to reduce pumping loss and enhance fuel efficiency.

Branching exhaust gas streams enables ammonia-based desulfurization in recirculation lines, preventing cooler blockage from ammonium sulfate precipitation.

Heating the lubricant sump prevents blow-by induced saponification and enables effective oil separation via pressure differentials.

An SCR enclosure for locomotives employs nested catalyst cells and a central mixing tube to create low back pressure while accommodating thermal expansion.

A secondary air separate chamber within an internal combustion engine air cleaner isolates valve actuation noise without special components.

A double-walled gas valve unit integrates fuel lines within a housing to create a compact control subsystem.

A baffle reduces swirl and vortex formation in the air stream to ensure uniform distribution into the segmented debris removal device.

Segmented casings isolate the gearbox, compressor, and turbine modules to reduce bulk and eliminate lubricant circulation risks.

A stirlocharger uses a Stirling engine to compress intake air for combustion chambers.

Vertical intake device stacking reduces air resistance, decreasing turbo lag and vehicle width.

A turbocharger variable speed control mechanism uses a planetary gear set and brake actuator to drive the shaft.

An inference graph models hybrid traffic interactions by representing participants as vertices and directed edges to estimate execution trajectories.

Helical inlet channels guide fluid tangentially into the swirl chamber, reducing energy losses and cavitation while producing homogeneous droplets.

Electric motor assistance drives the compressor during startup, reducing transient response time and NOx emissions in opposed-piston engines.

Fusing map data with deep learning models to generate precise road structure perception results.

A diesel emission reduction unit uses an exhaust heater and closed-loop dosing to create a homogeneous ammonia mixture in the exhaust stream.

Analyzing temporal pressure drops during test injections identifies quantity deviations in fluidic metering systems, bypassing complex rigidity computations.

Conical piston recesses guide fuel spray to prevent plume impingement, reducing soot while allowing side-mounted injectors for easier maintenance.

Segmenting the combustion chamber with a lip part and shallow sub-chamber maintains swirl intensity at low engine speeds, reducing NOx emissions.

Controlling D10 and D50 of recycled SiC powder resolves the trade-off between waste reuse and thermal conductivity in honeycomb filters.

An engine piston crown features an annular airfoil surface that redirects moving fluids away from cylinder walls.

Compressed air flow thermally protects the supply tube from exhaust heat while pulse-width modulation ensures uniform spray distribution.

An insulating heater ring positioned upstream of the energization-exothermic substrate transfers resistive heat to combust accumulated soot deposits.

A branch communication valve adjusts fluid flow between twin turbocharger scrolls to manage exhaust gas distribution.

Redirecting engine coolant through a dedicated heat exchanger prevents moisture condensation on compressor blades during cold starts.

A diesel engine piston cavity with an optimized lip radius controls fuel spray speed and mixing efficiency across varying load ranges.

Angularly spaced protrusions deflect fluid spray to create swirl motion, reducing energy consumption and heat transfer without high injection pressures.

A vehicle control apparatus manages engine restart timing based on battery state to optimize fuel consumption.

A hybrid drive torque control system coordinates combustion engine and electric machine outputs to deliver maximum reproducible total drive torque.

A dual SCR catalyst exhaust system uses interstage cooling to maintain high ammonia loading on the downstream converter.

A metering module cooling sleeve encloses the holding structure to dissipate heat from the dosing valve via a coolant circuit.

Segmented converter bodies with sealed access ports enable in-situ catalyst cleaning without disconnecting the exhaust system, reducing labor time and costs.

A tapered mixing chamber injects reductant into swirling exhaust gas to enhance fluid mixing efficiency.

Electric heating element rapidly warms catalysts while a deflection element redirects exhaust flow to reduce cold start emissions.

Meridionally divided variable nozzle turbine isolates exhaust streams to minimize cross talk between cylinder subgroups while optimizing power extraction.

A pre-chamber engine design balances thermal efficiency and knocking suppression through controlled jet potential.

A metal adapter holding plate secures the charge air cooler within a non-metal housing, resolving positioning instability in turbocharged engines.

Rerouting injector return fuel upstream of the low pressure filter simplifies the diesel fuel system architecture.

A control device adjusts battery charging rate thresholds based on temperature to enable idling stop execution.

Offset exhaust outlet pipe directs gas through catalyst overlap, reducing ventilation resistance and improving catalyst efficiency.