Internal Combustion Piston Engines TRIZ Cases

Inclined connection passage axis reduces wastegate pivoting range and valve member size for compact turbocharger designs.

Optimizing the volume ratio of a spherical cavity on the piston head shortens combustion duration and reduces fuel consumption in spark ignition engines.

Cutting the original weld bead to separate the prechamber housing allows material removal of the heat-affected zone for a secure new joint.

An additional cam lobe opens the intake valve during the exhaust stroke, enabling internal exhaust gas recirculation to reduce nitrogen oxide emissions.

A method converts discrete optimization problems into K-spin formulations to enable systematic parameter setting on quantum annealers.

Microwave curing injects silica insulation into honeycomb passages, forming internal thermal barriers that reduce heat loss during idling and start-up.

A vehicle running control device estimates target deceleration to adjust engine torque during inertia running.

A linear valve arrangement moves through a separating wall to control exhaust gas flow between two volutes.

A soot loading metric estimates filter load using pressure drop and volumetric flow data.

Evaporation plates intercept urea spray toward heated surfaces, preventing wall deposits and boosting evaporation efficiency.

Strategic activation of electrical heating components manages thermal energy distribution in a reducing agent delivery system.

Integrated conductive plastic heating elements eliminate fragile ceramic insulators and separate busbars, reducing assembly complexity.

Opposing rotation of the cylinder and piston units eliminates side loading forces that cause wear, reducing energy loss while maintaining alignment precision.

Segmenting hydrocarbon calculations into absorption, desorption, and oxidation components enables precise storage estimation for timely catalyst regeneration.

Integrating multiple components into one housing eliminates intermediate conduits to reduce space occupation and pressure losses.

A removable adapter integrates a venturi and filters to mix external air with fuel in combustion tools.

Angled pre-chamber geometry directs air and fuel flow to generate swirl motion, reducing surface wetting.

Cross key pins secure a turbocharger heat shield to the bearing housing, preventing pin wear and binding from uneven thermal expansion.

A vehicle control system interprets driver intent through brake pedal force variations to manage engine start and stop operations.

Segmented terminal edges prevent liquid re-scattering into gas at the ribbon outlet, resolving separation performance versus device complexity.

Exhaust combustor adjusts lambda to 1.0, enabling 3-way catalyst use and removing urea crystallization risks.

Radial injection prevents gaseous fuel escape through air inlet ports and exhaust valves, enabling efficient retrofitting of liquid-cooled engines.

Combining active electrical heating with combustion-based post-injection overcomes limited heat input power to reach target temperatures quickly.

A catalyst deterioration detection device uses machine learning maps to calculate deterioration levels from sensor data.

A toroidal wastegate plug profile maintains contact with the seat to control exhaust flow and improve controllability.

A flexible diaphragm valve regulates counter-pressure to prevent nozzle overloading and ensure precise dosing accuracy.

A motorcycle engine control system uses wheel speed sensors to detect overturning conditions and initiate an automatic shutdown sequence.

Exhaust gas recycle reformer increases octane rating of recycled stream through catalytic conversion, enabling high energy content fuels.

A mixing structure cools gas streams and entrains them into liquid fuel to form a homogeneous mixture before combustion.

Vertical routing and selective cooling maintain high exhaust temperatures near the catalyst, resolving activation delays caused by long passage lengths.

Segmented filtration and intermediary regulators condition compressed natural gas to optimize engine performance while managing device complexity.

Localized gap electrodes enable controlled electrostatic discharge to verify wiring continuity and plausibility without soot exposure.

A swirl unit reagent mixer induces rotational flow to enhance mixing of exhaust gases and urea solution.

A fuel injection system uses a residual pressure regulator to maintain optimal fluid pressure levels for precise control.

Anti-freeze device uses exhaust gas heating and antifreeze additives to maintain working fluid temperature above freezing point.

A bypass flow shields a reactant stream from recirculation zones, preventing deposit formation on exhaust gas ducts.

Controller determines maximum hydrogen production capacity via lambda sensors to resolve combustion air ratio precision versus control complexity trade-offs.

An engine control device determines battery status by driving the crankshaft in reverse rotation using variable supply current duty ratios.

A diagnostic method measures reducing agent mass during high-richness regeneration to detect nitrogen oxide trap faults.

Electromagnetic induction heating accelerates catalytic converter light-off by generating internal thermal energy directly within the substrate structure.

Sacrificial anodes shield separate heat exchangers and pressure regulators in marine LPG kits, reducing galvanic corrosion and maintenance costs.

Secondary flue gas heats a dedicated reactor to convert aqueous urea into ammonia vapor, providing sufficient residence time for effective SCR NOx reduction.

A dual-pressure turbocharger system with a heat exchanger and auxiliary combustor adjusts mass flow to increase power output.

Textured surfaces on engine components accelerate air-fuel mixtures, reducing flow disruption and heat transfer losses.

A rhodium catalyst maintains high metal dispersion through precise aqueous solution pH control during preparation.

A selective catalytic reduction system estimates total efficiency by modeling separate injection and loading reactions for precise ammonia dosing.

Predictive temperature modeling stops unnecessary pump operation, reducing energy consumption and noise while preventing reductant crystallization.