Internal Combustion Piston Engines TRIZ Cases

A method modifies soot combustion rate estimation by weighting the standard Arrhenius model with a gain based on detected oxygen concentration stabilization.

A return means with a second running element supports piston movement along a control curve.

Segmenting the intake port with a shaped partition wall plate generates strong tumble flow, improving combustion efficiency at low loads.

A secondary current control circuit adjusts ignition energy delivery via feedback signals from an ECU.

Estimating electrical load current prevents voltage drops during micro-hybrid engine stops.

Angularly spaced volute tongues reduce blade strain and prevent deformation from non-uniform pressure distributions.

Curved support surfaces enable rolling movement between heating conductors and carrier units, reducing mechanical load on support elements.

A control module synchronizes diesel particulate filter regeneration initiation to manage exhaust temperatures.

An exhaust heater overlaps a treatment unit housing to reduce installation space while maintaining reliable component operation.

Collars around passage openings block water entry into the collection chamber, protecting sensors and mounting mats from thermal stress damage.

Primary and secondary annular grooves in the center housing direct lubricating oil away from hot zones to prevent coking and binding.

A multilayer exhaust catalyst coat layer shifts palladium to upper layers and optimizes the Pd to Rh mass ratio for improved purification.

Embedding metal particles in a ceramic substrate allows induction heating to rapidly raise temperature, resolving cold start efficiency bottlenecks.

A masking wall segments the combustion chamber to direct intake airflow into a controlled tumble motion, maintaining high efficiency at low engine speeds.

Strategic solder area placement distributes stress perpendicular to sheet metal foils, accommodating thermal expansion without damaging rigid structures.

Secondary air injection into the exhaust duct enables exothermic oxidation of soot particles, preventing thermal damage during particulate filter regeneration.

An adjustable pressure-balancing valve manages cylinder set differentials while a heat shield isolates the actuator from thermal interference.

Spiral grooves in a fuel injection valve create rotational flow that introduces air bubbles, reducing particle diameter and improving combustion efficiency.

An intake manifold with reversed bends places a resonator near cylinder axes, reducing longitudinal dimension while maintaining resonance chamber volume.

A wave spring between the control rod and bolt absorbs axial play, reducing noise and wear without complex heat treatment.

Annular recesses in a combustion chamber redirect fuel spray into rotating vortices, resolving low mixing efficiency and high hydrocarbon emissions.

Controller estimates ammonia adsorption amounts to calculate slip development temperatures for SCR catalyst abnormality diagnosis.

Movable intercooler guides redirect the thermal component away from the high-pressure fuel pump to prevent interference damage during vehicle collisions.

A valve with a spherical body uses an urging unit to control force for vibration suppression.

Palladium-rich catalysts heat exhaust gases via hydrocarbon oxidation, reducing platinum costs and sulfur sensitivity.

The method computes a monitoring variable by comparing measured slip rates with model predictions to diagnose nitrogen oxide storage catalyst damage levels.

A regression-classification model fusion framework extracts features and determines membership probabilities.

Selective routing of exhaust gas through alternating treatment devices prevents fouling and clogging while maintaining emission control efficiency.

A vehicle control device uses route information to manage drive unit switching at standstill conditions.

Concentric internal passages merge separate fuel lines into a single connector, eliminating complex external piping for engines lacking cylinder head bores.

RUL algorithm monitors sulfur accumulation in SCR catalysts to schedule desulfation before engine output performance degrades from excessive sulfur retention.

A pressure compensating device stabilizes fuel line injection pressure near the exhaust pipe injector.

Segmenting a three-way catalyst into layers with varying ceria content resolves the trade-off between hydrocarbon removal and thermal degradation resistance.

Vertical stacking of overlapping intake passages reduces engine room footprint while maintaining supercharger functionality.

Staged ammonia feed reduction prevents catalyst temperature spikes and ammonia slip during particulate filter regeneration.

A cerium oxide-carbon coating on combustion chamber walls facilitates photon-electron interactions to reduce NOx and soot emissions.

Angled gas channel directs fuel flow into pre-chamber valve, reducing space requirements and eliminating complex duct alignment.

Concentric honeycomb bodies reduce pressure loss and improve catalyst activation without increasing device volume.

Dynamic engine speed adjustment based on real-time generator current monitoring optimizes fuel consumption while maintaining reliable screed heating readiness.

A diesel particulate filter monitoring method estimates permeability and soot load using recursive logic on thermodynamic exhaust parameters.

Sensors monitor outlet temperature and trigger a bypass valve to divert exhaust gas, preventing thermal damage to the diesel particulate filter.

Geometric valve head and seat designs reduce fluidic force over the stroke, preventing soot coking during exhaust regeneration.

Heating devices raise exhaust temperatures to 250°C–380°C, boosting nitrogen dioxide production for efficient soot oxidation while preventing thermal damage.

Stationary air-breathing rocket engine reduces oxidizer weight by extracting oxygen from ambient atmosphere via pressure differential.

An intercooler reduces inlet air temperature in a turbocompressor, increasing air density and preventing abnormal combustion.

A feed pump control unit manages water temperature thresholds to optimize waste heat recovery system operation.

Segmented check valve seats distribute pressure loads across multiple contact points to maintain consistent sealing under high vacuum conditions.

An engine control unit adjusts idling-stop conditions using dynamic road-grade thresholds for coasting and stationary states.