Internal Combustion Piston Engines TRIZ Cases

Asymmetric communication passage in variable nozzle turbochargers facilitates deposit discharge from the link chamber.

Separate water and glycol circuits cool the exterior surfaces below 200°F while maintaining core temperatures for catalytic conversion.

Concentric flow paths in a ring catalyst accelerate urea evaporation, reducing activation delay during cold starts.

A particulate matter sensor uses a correction unit to adjust detection values based on exhaust temperature and insulator readings.

A torque vectoring apparatus uses nested planetary gear sets to control torque distribution between output shafts.

Stacked coolant conduits in nested manifolds reduce pressure losses while maintaining heat exchange efficiency.

Induction heating via metal inserts raises catalyst substrate temperature quickly, reducing harmful cold start emissions.

A hydrogen-fueled catalytic converter performs selective reduction on exhaust gases using the engine fuel supply.

A three-stage adjustable downhole choke integrates electrically controlled telescopic positioning and multi-stage choking for precise flow management.

An intake manifold uses an axial fitting holding portion and retaining rectifying member to secure a flame damper without creating inner wall steps.

A vehicle control apparatus manages engine stop and restart based on battery state of charge to enable idling stop.

Parallel partition wall segments suppress exhaust backflow between cylinders to maintain consistent turbine wheel rotation speed.

Nesting a heating jacket around a filter medium hollow body improves efficiency while reducing radial installation space.

Calculation models estimate ammonia consumption to correct measurement errors from nitrogen oxide storage devices and prevent leakage.

A particle filter mass estimation system measures differential pressure and gas flow to calculate stored soot levels using minimal sensors.

Predictive ammonia dosing resolves the conflict between rapid NOx conversion and passive catalytic particulate filter regeneration during engine transients.

A plasma reactor synthesizes ammonia from fuel and nitrogen to reduce exhaust emissions.

Oxygen sensors compare exhaust concentrations to detect NOx sensor faults, avoiding complex estimation models.

Laser ionizes fuel mixtures to enable elongated sparks that ignite larger areas, improving thermal efficiency and reducing unburned fuel energy.

A rotating exhaust valve assembly regulates gas flow in a two-stroke engine cylinder.

Positioning a damping element in the outer drive train section prevents wear from partial load vibrations while avoiding aggressive thermodynamic conditions.

A control unit calculates exhaust gas temperature differences to determine particulate filter heat input and water aggregate states.

A pre-chamber engine design uses a specific injection hole area and compression ratio index to control jet potential.

A bifurcated exhaust pipe integrates a tubular portion with an attachment featuring a truncated cone recess for injection valve mounting.

Lubricant introduced into the LNG inlet passage sublimes to lubricate seals, extending pump life despite freezing risks.

Upstream NO oxidation catalyst converts nitric oxide to nitrogen dioxide, reducing ammonia slip during regeneration events.

Orienting a cylinder head recessed section downward frees bearing space for tumble control valves, balancing weight reduction with combustion efficiency.

A compressible polymeric member between the pump and exhaust pipe dampens vibration transmission while reducing heat transfer.

Adaptive nonlinear model predictive cruise control reduces torque demand swings and fuel consumption by predicting road grade to proactively adjust torque.

An electromagnetic clutch decouples the turbopump shaft from the engine crankshaft, enabling independent rotation control across a wider operating range.

A driving assistance device displays an energy consumption rate map with a color-coded eco region and an icon indicating current vehicle speed and acceleration.

Housing grooves and bearing tabs align the outer sleeve, eliminating complex alignment tools and reducing manufacturing costs.

A dual compressor engine air supply system uses an automatic clutch to manage mechanical engagement between the crankshaft and compressors.

Curved surge tank geometry reduces turbulence and airflow resistance during directional changes.

A variable geometry turbocharger routes exhaust gas through a bypass line to heat the catalyst directly.

A circumferential retainer blocks aqueous urea from entering SCR catalyst supports.

Injecting air into the exhaust line bypasses fuel injection delays, enabling precise air-to-fuel ratio adjustments without impacting combustion stability.

Varying thermal resistance in the partition wall protects the catalyst from deactivation while maximizing heat recovery for efficient hydrogen generation.

External low-temperature fuel reformer generates reactive intermediates to extend clean combustion range without catalysts.

Positioning the connecting piece on a lever surface facing the bearing bushing improves control shaft guidance and actuation quality.

A fan induces airflow through an insulated enclosure to cool diesel exhaust fluid stored inside a construction machine engine compartment.

Predictive dew point control mitigates sensor failure from exhaust condensation by enabling earlier activation and broader operational windows.

Segmented injection nozzles on radial blades atomize diesel exhaust fluid at the source, eliminating downstream baffles and improving NOx reduction.

Measures pressure drop developments during reductant injector actuation to identify nozzle outlet deposits in SCR injection systems.

Multi-source data fusion identifies spatial-temporal bridge loads using vehicle positioning and simulation, avoiding complex hardware installation.

Optimized pore volume distribution ratio enhances exhaust gas contact with catalyst active components.

Tapered through-holes intersect air-flow in an intake manifold, reducing acoustic noise generated by partial throttle opening.

A dedicated valve member extends from a base to seal the wastegate gap in turbochargers.

A diagnostic module calculates a criterion using temperature difference and air-fuel richness to monitor catalytic converter efficiency.