Internal Combustion Piston Engines TRIZ Cases

A piston bowl with opposing combustion surfaces accommodates inflowing injector spray to reduce heat transfer.

A magnetostrictive exhaust fluid level sensor measures tank contents across the full range to calculate consumption rates and notify operators.

Transition metal mixed oxides replace expensive ceria-zirconia materials to lower oxygen release temperatures while maintaining high storage capacity.

Segmenting binder particles by size improves washcoat binding strength without increasing viscosity.

Peroxide oxidation converts harmful carbon sludge into harmless byproducts, eliminating emissions spikes while preserving engine reliability.

A controller dynamically adjusts reductant injector timing, sequence, and grouping to optimize dosing in exhaust aftertreatment systems.

Nested cooling lines manage thermal stress in the heated fuel conduit, resolving complexity trade-offs while improving engine efficiency.

Segmented V-shaped legs replace solid rings to lower mass and simplify manufacturing while maintaining structural integrity and sealing effectiveness.

A coaxial valve arrangement supplies additional air to a combustion chamber through an internal cavity within the primary valve stem assembly.

Arcuate appendages on the stem enhance structural integrity while reducing mass for improved engine performance.

A Ce-Pr-Zr composite oxide enables large oxygen absorption and desorption across wide temperature ranges.

Segmented common rails with distributed pressure control reduce pipeline loss in high-power engine exhaust systems.

An estimator adjusts oil flow through a cooler or heater to match target viscosity.

A two-layer exhaust catalyst uses a rhodium-rich upper zone to purify gases efficiently.

An apparatus estimates SCR catalyst NOx conversion efficiency using degradation factors and inlet concentrations.

A flow control device within the air flow path adjusts compressor operation without recirculating air from outlet to inlet.

A heat shield channels compressed air from an air jet to cool exhaust valves, reducing thermal insulation needs and preventing component degradation.

A fuel circulation bypass and switching valve manage reformed gas flow in an engine system.

Dynamic load distribution optimizes SCR efficiency and engine operation to reduce total nitrogen oxide output.

A protective regeneration timer adjusts soot filter regeneration cycles based on real-time engine operating conditions.

Ozone oxidizes soot on a downstream filter element, eliminating DOC NO2 consumption at low temperatures.

Segmented nozzle ring manages thermal expansion to maintain parallelism, suppressing deformation and leakage flow in variable geometry turbochargers.

A three-way valve routes compressed air from the engine compressor to a turbine auxiliary wheel when the air tank is full, increasing torque output.

A through axle switching rocker arm segments the mechanism into inner and outer arms to enable variable valve actuation strategies.

A tapered valve member reduces parasitic losses by minimizing lift while maintaining sealing effectiveness through extracted flexible seals.

Dynamic inlet port control adjusts air intake timing to resolve the trade-off between exhaust purging effectiveness and volumetric compression ratio range.

Tertiary coil control increases secondary current to raise spark discharge energy, preventing misfires caused by smolder and carbon deposits.

Alumina-ceria composite maintains high surface area through controlled porosity, preventing crystallite growth during high temperature calcination.

A double-walled mixing device uses electric heating and heat transfer ribs to vaporize reactants in exhaust streams.

An emergency steering system supplements hydraulic pressure during neutral gear eco-roll operations to maintain driver control.

Partition walls isolate intake flows to prevent mutual disturbance and resonance, improving volumetric efficiency across wide speed ranges.

A plastic tank uses an induction heating element to thaw frozen urea solution without exposing components to corrosive fluids.

A gas engine piston features a non-rotationally symmetrical elevation within the bowl to generate axial flow deflection and enhanced swirl.

Colloidal alumina forms a diffusion barrier within ceria-zirconia composites to preserve surface area during high-temperature aging.

A porous exhaust gas purification filter uses partition walls with high surface area to separate particulate matter from gasoline engine emissions.

A variable nozzle unit regulates vane rotation via contact walls on a receiving portion.

Bulging nozzle vane edges align flow angles to minimize impact losses and secondary flow distortions in radial turbines.

Adjusting exhaust cam phase angles across engine banks reduces interference between cylinders, improving low-speed torque.

A vented reducing-agent injector gasket suppresses heat transfer from exhaust pipes to urea injectors.

A turbocharger operation mechanism uses a link plate and lever to stabilize wastegate valve control.

A segmented exhaust heat recovery device uses multiple heat exchangers in a secondary flow path to enable flexible positioning of the exhaust gas outlet.

Segmenting the exhaust flow allows localized heating of the SCR converter without overheating the particulate filter, reducing cold-start emissions.

A re-entrant piston bowl with a 105° peripheral exit angle directs fuel spray to create toroidal recirculation for efficient combustion.

A reverse flow prevention structure catches condensed water in an engine intake passage using wall portions that rise from the bottom surface.

A bi-fuel reciprocating engine supplies primary and secondary fuels to drive direct mechanical fracturing pumps.

Dynamic soot estimation adjusts urea dosing and diagnostic modes, resolving the trade-off between NOx conversion efficiency and passive regeneration capability.

Capacitor-based ignition coil circuit delivers supplemental voltage pulses to the primary winding during engine cranking.