Internal Combustion Piston Engines TRIZ Cases

A piston groove with paired notches stabilizes tumble and squeezing airflow near top dead center, reducing cycle variation and knock.

Variable hydrocarbon and hydrogen or ammonia fuel blending holds engine temperature within limits while extending range and reducing storage burden.

A bypass channel around the turbine protects the NOx sensor and improves exhaust additive mixing before SCR treatment.

By moving needle guidance outside the nozzle body, this case avoids internal throttling, reduces wear, and preserves precise fuel injection.

Localized grooves or notches near pre-chamber passages relieve thermal cycling stress, reducing tip wear, deformation, and durability loss.

Counter-current exhaust heat exchange and catalytic cracking turn fuel-enriched gas into a hydrogen-rich mixture for cleaner, leaner engine combustion.

Non-local modules capture long-range frame dependencies to improve video classification accuracy while depthwise separable convolutions cut model burden.

NOx conversion in close-coupled and downstream SCR units is used to detect poor DEF quality, dosing faults, and line blockages.

A six-step General Cycle raises engine efficiency by optimizing compression and expansion ratios while limiting peak pressure and temperature.

A sealed lubricant chamber and hydraulic brake device damp short-stroke closing, reduce wear, and extend gas injector service life.

Transfer passage outlets placed beyond assembly channel limits improve flame propagation, combustion efficiency, and serviceability.

A leak return passage with an inspection hole and check valve contains escaped fuel and pinpoints the leaking injection valve.

A raised-then-lowered fuel return pipe keeps the pressure reducing valve soaked in fuel, cutting abrasion while easing common rail mounting.

Multi-scale attention and deep separable convolution improve lane line detection accuracy while lowering model complexity and compute cost.

A vertical heat exchanger above the cylinder head recovers exhaust heat while keeping a split-cycle engine compact for vehicle installation.

A gear rotating sleeve and elastic nozzle mechanism avoid high-temperature linkage binding while maintaining efficient turbine flow control.

A dynamic SCR catalyst model separates NO and NO2 from NOx sensor data to adjust reductant dosing and reduce slip.

A lambda sensor module estimates upstream oxygen from existing engine signals to monitor catalytic converter health without extra sensors.

A side injector creates a pilot flame near the glow plug, enabling reliable alternative-fuel ignition while reducing direct liquid-fuel wear.

An integrated heat exchanger uses engine coolant and refrigerant flow to keep urea solution in range and prevent degradation and ammonia formation.

Through-hole wiring and dual-side thermoelectric elements simplify fluid-channel assembly while improving use of hot-cold temperature differences.

Sequentially energizing heater sections by upstream temperature cuts battery current draw while sustaining ammonia dissociation in vehicle crackers.

Reoriented exhaust after-treatment and turbo piping cuts diesel engine width and length while avoiding component interference.

A carbamic ester acrylic elastomer self-crosslinks to improve heat resistance and mechanical strength without separate crosslinking agents.

A converging-diverging injector nozzle drives hydrogen to supersonic speed and draws in side air to improve mixing, combustion, and noise control.

Attention maps guide adversarial patch placement to target sensitive regions and disrupt Transformer-based visual tracking.

Residual gas is purged with fresh air, then a vacuum-insulated catalyst is heated and sealed to cut power use and prevent exhaust plug freezing.

A multi-layer rotary engine housing uses a bonded wear-resistant outer layer and cooling support to protect sealing surfaces under heat and pressure.

An integrated manifold-catalyst interface removes extra piping and valves, cutting leak risk while treating ammonia or methanol slip.

A recessed flame deck masks intake valves to generate tumble flow in hydrogen engines while avoiding piston interference during variable valve timing.

Secondary air branched from the intake tract is spark-ignited in the exhaust to burn unburned fuel, cut cold-start emissions, and heat aftertreatment faster.

Modular nozzles with different geometries and flow control widen waste heat recovery operating range while cutting nozzle machining time and cost.

A conduit coating of copper, phosphorus, sodium, or silica traps platinum before the SCR catalyst, preserving NOx conversion and lowering N2O emissions.

A through-thickness PGM gradient in dual washcoat layers improves NOx, HC, and CO conversion while avoiding uniformly high precious metal loading.

An energy balance model predicts catalytic converter temperature from heater power and exhaust conditions to cut diesel emissions with less energy use.

Real-time cylinder oil film thickness is used to correct ignition timing, cutting engine noise and vibration without sacrificing power.

Surrogate-guided CNN search builds diverse deep ensemble structures for image classification with faster convergence and lower computing demand.

Nanoporous carbon stores hydrogen and hydrocarbons without high-pressure or cryogenic tanks, easing engine fuel logistics and environmental burden.

Nested transfer tubes increase swirl and mixing length in a compact reductant delivery layout, improving NOx conversion where installation space is limited.

Injecting liquefied gaseous fuel in liquid phase cuts unburned fuel escape and self-ignition, enabling higher two-stroke engine efficiency.

A segmented ceramic-metal pilot chamber resists thermal load and flame erosion while easing finishing, assembly, and maintenance.

Engine heat is passively conducted through a protruded valve housing to temper pre-chamber gas and keep mass flow stable despite temperature changes.

A tilted upper pipe and bent outlet improve additive vaporization before SCR entry, limiting deposits and supporting uniform ammonia mixing.

A segmented catalyst layer leaves an uncoated wall region to collect PMs, prevent pore blockage, and maintain exhaust purification with low pressure loss.

Pressure data upstream of the DPF and across it reveals SCR clogging early, helping prevent backpressure, ammonia release, and NOx rise.

Encoding video as implicit neural network parameters captures multi-frame temporal redundancy to improve rate-distortion and lower bitrate.

Integrated swirl channels in the valve seat simplify injector machining and assembly while preserving rotational flow for finer atomization.

Compressed air is routed through a dedicated coolant channel to cool the turbocharger motor while limiting blowby and bearing heat exposure.

Biasing gaseous hydrogen along intake-port streamlines improves fuel-air mixing, stabilizes ignition, and helps avoid knock and pre-ignition.

Integrated ribs, rail, and cooling channels improve rotary engine housing heat removal while supporting apex seal contact and lower wear.

An auxiliary chamber cools LPG vapor using gasoline from the fuel tank, reducing pressure for refilling in high heat.

Individual oxidant flow adjustment devices regulate each combustor to resolve partial load inefficiencies and prevent lean blowout.

An exhaust gas reactant heat exchanger transfers thermal energy from combustion waste gases to urea solutions for injection into internal combustion engine exhaust streams.

Direct expander-compressor coupling reduces exhaust back pressure without increasing driveline complexity.

A vehicle control system monitors clutch pedal and transmission gear states to determine driver intent for engine restarts.

Angularly offset twin scrolls and vanes reduce high cycle fatigue from pulsations while minimizing exhaust gas leakage between flow paths.

A centrifugal separator with a disc stack rotor removes pollutants to prevent soot scaling and reduce maintenance needs in exhaust gas scrubbers.

Incorporating sulfur suppressing compounds into filters reduces SOx levels while maintaining ammonia availability for NOx decomposition.

Heat absorbing plates transfer exhaust thermal energy to a gasification reactor, increasing utilization by 95% without adding device complexity.

Electric wastegate actuator integrated into compressor housing for direct thermal coupling with fresh air intake duct.

Dynamic cam phasing reduces turbocharger surge time and improves brake thermal efficiency during transient engine operation.

System determines flow rate offset and calculates error against expected dosing commands to diagnose SCR delivery blockages.

Acid-free quaternized nitrogen compounds function as fuel additives to reduce internal diesel injector deposits.

The SCR system manages ammonia storage and NOx conversion by adjusting DEF dosing based on real-time sensor data, preventing urea deposits and ammonia slip.

Integrating boil-off gas into the liquid stream via a mixing device eliminates high-pressure compressors, reducing installation costs and space requirements.

An inverse dynamic model coordinates engine torque and clutch pressure during automatic transmission upshifts.

A moving cam system shifts axially to select distinct valve lift profiles via a solenoid guide.

A diesel engine SCR ventilation system uses electric control valves to manage compressed air flow and maintain stable pressure differences.

Feedback control regulates ozone generation to prevent unwanted compounds while ensuring complete conversion of nitrogen monoxide.

Two-point control switches the charge air cooler between maximum cooling and off states to prevent water condensation during engine startup.

Lowering the CCV stuck-open threshold from 75°C to 60°C prevents UQS thermal degradation during cold weather DEF thawing.

Controlled pore size distribution in porous walls enables accurate soot level monitoring via pressure drop response, reducing premature regeneration events.

A NOx sensor self-diagnostic method filters test outputs using temperature and oxygen thresholds to isolate degradation signals.

Counterrotating rotors segment compression and power strokes to eliminate friction losses.

A contoured piston bowl with a reentrant surface and swirl pocket creates a swirling fuel-air mixture effect.

An intermediary valve restricts upstream exhaust flow to retain heat near the catalyst, reducing cold start duration and tailpipe emissions.

A pump start process manages urea solution temperature to maintain stable outlet pressure during actuation.

A fuel supply device partition wall section includes surface area-enlarging elements within the mixture channel to increase evaporation.

Compressed air purges the SCR reactor and intake lines, resolving insufficient air exchange and corrosion risks during venting.

Segmented vessels manage complex container logistics by enabling small quantity preparation at remote locations without service stations.

Porous fibrous media installed upstream of a mass air flow sensor reduces turbulence and signal noise without adding complex structural components.

A flow mixer combines cooled charge air with recirculated exhaust gas to reduce intake manifold temperature without heavy stainless steel heat exchangers.

A segmented EGR accumulator distributes recirculated flow to specific cylinders, resolving mixing contradictions while reducing NOx emissions.

A water jacket positioned between the exhaust and secondary air passages cools high-temperature exhaust gas.

A reforming cylinder generates oxidation products for mixed combustion, broadening the engine operation range without extra catalytic devices.

Oblique tumble generating duct directs airflow via sharp angle projection to resolve diesel engine vortex trade-off.

Two ammonia models adjust interpolation factors to minimize slip and maintain conversion efficiency without excess reserves.

A connecting rod bearing lubrication method delays the inlet valve opening to reduce combustion chamber pressure before delivering lubricant.

Bolted SCR catalytic units replace welded assemblies in mufflers, reducing weight and production costs while facilitating repair.

Outer periphery protector absorbs deformation from lower portion shields, preventing load transmission to the urea water take-out port.

Software algorithm analyzes nitrogen oxide sensor data to detect ammonia excess, eliminating dedicated sensors and optimizing SCR efficiency.

Segmented min-flow stops stabilize the variable turbine geometry adjusting ring angular position against radial play and operational wear.

Segmenting airflow with a partition wall prevents heated exhaust gases from reaching the reducing agent injection device, maintaining cooling efficiency.

An insulating collar segments the tank into distinct thermal zones, preventing uncontrolled heat loss from the inner container to the frozen outer volume.

Axially sliding catalyst storage chamber accommodates thermal growth, preventing structural damage while maintaining hermetic sealing.

A nested bi-fuel tank design absorbs permeated gas-phase fuel into liquid fuel to increase energy density.

An electronic compressor creates intake suction to accelerate air flow during engine startup.

Dividing exhaust gas into coaxial annular streams improves reducing agent mixing while minimizing pressure losses in SCR systems.