Internal Combustion Piston Engines TRIZ Cases

Gyro sensor on auxiliary floater detects tank inclination to correct liquid level detection errors caused by vehicle ramps.

A torque converter coupling adjusts its K-factor to increase internal force and pre-tighten driveline components during engine restart cycles.

A heat accumulator surrounds an exhaust pipe using two displaceable perforated tubes to control thermal transfer.

Multi-arm probes extract representative fluid samples via pressure differentials, overcoming point-measurement errors in SCR systems.

A port captures exhaust gas leaks from a movable flow directing mechanism and directs them to the engine crankcase.

Segmented passages bypass the turbine during cold-start to expedite catalyst light-off, reducing turbo lag.

A pressure-responsive drainage valve opens to remove condensed water from vehicle exhaust systems.

A ceria-zirconia complex oxide with a pyrochlore phase and controlled crystallite size enhances oxygen storage capacity across low and high temperature regions.

Segmented airtight chamber directs exhaust gas outdoors through dedicated ducts to prevent leakage and maintain indoor air quality.

A trained machine-learning model predicts the resonant frequency of a selective catalytic reduction catalyst to monitor reducing agent concentration.

A tank bracket with L-shaped side surfaces sandwiches a resin reduction agent tank between the bracket and the vehicle frame.

A piston cavity and guiding protrusion direct fuel mist toward a spark plug during compression.

Segmented sealing seats and a metal bellows reduce actuator force on the nozzle needle, enabling high-pressure operation with compact actuators.

System restarts engine on brake input to pressurize transmission fluid, reducing torque transfer delay during vehicle launch.

A metal oxide catalyst reduces ignition energy and accelerates flame propagation speed for ammonia fuel.

A recirculation circuit channels heated medium through a conduit element to warm an exhaust gas aftertreatment device.

A swirl port delivers fluid at a predetermined angle to generate swirling motion within an internal combustion engine cylinder.

An automatic system uses a fuel injector to drain water from a separator reservoir into an exhaust pipe, eliminating manual maintenance.

An injector detection system uses electromagnetic induction to measure needle position changes, resolving inaccurate fuel injection caused by wear.

Extended EGR piping reduces thermal fatigue at connecting parts by optimizing heat dissipation paths, preventing premature damage from high heat stress.

Two angled electromagnetic coils generate a rotating magnetic field to actuate a magnetic shape memory element.

After-run heating prevents delamination cracking by evaporating moisture before freezing occurs.

An asymmetric fuel injector holder widens opposite gas nozzle openings to guide combustible gas flow, reducing losses from uneven circumferential distribution.

Dynamic injection switching between upstream and downstream metering devices minimizes ammonia slip while maintaining high NOx conversion rates.

Segmenting a honeycomb filter into regions with 9-14 μm and 15-20 μm pores resolves the trade-off between exhaust purification performance and pressure loss.

A three-way valve directs exhaust gas through parallel SCR or booster paths to optimize catalytic conversion.

A clutch pedal detection method uses multiple pressure thresholds to identify driver intent and trigger faster engine restarts.

A concentric EGR conduit surrounds an after-treatment device to insulate catalysts from ambient air, accelerating light-off temperatures during engine warm-up.

Segmented coaxial plates create vane slots, reducing manufacturing complexity and cost while maintaining alignment precision.

A piston-driven spigot seals the exhaust port while a dual-chamber system manages combustion.

A hybrid vehicle control apparatus estimates fuel consumption progress and deterioration timing to switch to a fuel consumption promotion mode.

Bypass duct and valve route intake air directly to the manifold, maintaining flow rates when supercharging pressure causes excessive resistance.

Segmented scroll geometry maintains pulse separation while eliminating cross talk between separate exhaust passages.

Varying nozzle hole distances from the central axis compensates for offset ignition, stabilizing flame propagation and reducing knocking in gas engines.

A controller disables idle filter regeneration to prevent urea deposition around the dosing valve injection hole.

Single pivotable flap directs exhaust gas to turbocharger or recirculation outlet, reducing component complexity while maintaining precise flow control.

A vehicle control device adjusts engine rotation speed for slope driving using a dedicated slope-road running control portion.

A meandering heating band inside an exhaust casing uses slot-shaped bearings to retain the element while accommodating longitudinal thermal expansion.

A hybrid vehicle control apparatus manages capacitor energy storage through dynamic threshold adjustments and generator motor operation.

Curved ribs in a Wankel engine rotor accommodate thermal expansion to prevent apex seal pinching and bearing deformation.

An idling stop control device stores authentication history to permit engine restarts based on pre-verified credentials.

A cruise control system adjusts reference speed to optimize vehicle coasting operations.

An asymmetric wastegate plug design reduces opening force while maintaining reliable sealing against exhaust pressure pulsations.

A high-pressure energy storage thermal power machine integrates a gasifier with parallel air-flow plates on an engine exhaust duct to capture waste heat.

Pressure sensors detect flame formation in exhaust burners, eliminating temperature sensor response delays and heat exposure risks.

A catalyst coating layer with high-aspect-ratio pores supports noble metals on void peripheries.

A curved EGR path with a downward slope directs blow-by oil away from the valve.

Compressed secondary air enters the exhaust tract via a flutter valve to overcome high backpressure and oxidize soot particles.