Internal Combustion Piston Engines TRIZ Cases

A piston crown with a central recess portion reduces combustion temperatures by 100 K, improving fuel injector life while maintaining low emissions.

A piston crown features a central mound and inclined slot to direct fuel flow toward the outer circumference.

Segmented turbochargers with a dynamic valve optimize turbine dimensions and flow cross-sections to reduce nitrogen oxide emissions.

A dual SCR catalyst exhaust system uses upstream vanadium to generate reducing agents that clean downstream copper zeolite.

Nested turbochargers and coolers within a VEE engine configuration resolve packaging complexity while maintaining maintenance accessibility.

A funnel-shaped turbo fitting reduces airflow diameter to increase pressure without moving parts.

An elliptical diffuser connection section expands exhaust gas flow longitudinally to reduce velocity and maintain compact packaging.

A catalyst flow body uses recessed partitions and channel closures to guide fluid paths through adjacent channels.

A retractable emission filter moves into the exhaust path to capture pollutants during low load conditions.

A mounting assembly isolates a reductant injector from high exhaust temperatures using a composite gasket with a thermal barrier layer and shim.

A preference retaining circuit stores driver settings across ignition cycles using an energy storage device and control module.

An added acceleration system withdraws compressed air from an integrated tank and introduces it directly into the intake pipe before fuel injection.

An air intake bypass recirculation structure uses adjustable airflow baffles to manage internal circulation.

A rotary valve merges manifold shut-off and bypass control to reduce system complexity while increasing braking power.

Nested catalyst carriers with intersecting flow paths enable compact device size while maintaining precise exhaust gas component detection accuracy.

A submersible pumping system maintains a superconducting electromagnetic drive using a temperature control jacket and cooler.

Parallel air lines channel ambient air through thermal contact with a fuel pressure regulator to lower intake temperature and reduce decompression energy loss.

Merges the EGR valve and interface part into one unit, reducing module volume while maintaining exhaust gas recirculation flow control.

Curved joining surfaces distribute thermal stress and prevent displacement in diesel particulate filters.

A control unit locks brake pressure before vehicle standstill to prevent rollback during automatic engine switch-off.

Pre-drilled restrictor plates enable accurate power reduction without electronic components, eliminating inconsistent manual adjustments.

Arcuate indents on a piston crown redirect fuel jets into spiral motion, preventing uneven dispersion and reducing heat rejection to cylinder walls.

Merges a urea tank with an internal heat exchanger to capture waste oil heat, reducing bulky separate storage devices.

A modified lean NOx trap stores exhaust pollutants at low temperatures using a specific platinum-palladium catalyst composition.

Convex portion with guide surfaces directs fuel-air mixture to prevent backflow and improve charging efficiency.

Heat absorbing plates in the exhaust passage transfer thermal energy to a gasification reactor, improving utilization while managing device complexity.

Offset spiral heating coil expands heat transfer surface area to rapidly raise exhaust gas temperature and shorten catalyst light-off time.

Cylindrical mixing pipe with guide fins directs swirling exhaust gas to ensure complete urea water decomposition.

A downstream substrate with a second SCR catalyst achieves selective catalytic reduction of nitrogen oxides while maintaining backpressure below 25%.

Preheats an exhaust gas burner combustion chamber via ignition device control before fuel supply to accelerate catalyst light-off.

Integrating resonator shells into the central duct eliminates assembly parts, reducing device complexity while maintaining low vent resistance.

A hybrid drive unit controls torque by segmenting output between an internal combustion engine and an electric machine during vehicle startup.

A layered exhaust catalyst uses distinct Pd and Rh distributions to achieve high NOx and HC purification ratios at 500°C.

Integrating a heating element within a hood reduces heat loss and improves efficiency while protecting the component from corrosive exhaust gases.

A porous separating layer creates directional flow resistance to filter impurities and prevent backflow in liquid reducing agent delivery systems.

Segmented flow paths route fuel past the actuator to create a stack effect that cools the delivery space and prevents vapor bubble formation.

Electromagnetic reagent injector uses swirl chamber to atomize urea, preventing clogging and corrosion in diesel exhaust systems.

A connector integrates a pressure accumulation portion to store compressed air that expands and pushes urea water back into the tank.

Dynamic determination thresholds adapt to engine vibration characteristics, preventing undue ignition timing retardation or advancement.

Active cooling reduces thermal stress on the high-flow turbine housing, enabling reliable transitions between low-flow and high-flow turbochargers.

A valve head circumferential edge groove generates turbulent flow to direct intake air into the combustion chamber.

An air pump supplies compressed charge air to the exhaust stream upstream of a turbine.

Curved valve plate and central wall guide exhaust flow directly to the catalyst, reducing turbulent energy losses and expediting lightoff.

Phase shift correction aligns inlet and outlet NOx data, resolving transport delays that compromise diagnostic accuracy.

Integrated exhaust elbow mounting area with convective cooling legs reduces heat transfer to the dosing module and prevents reductant deposit formation.

A fuel merge and discharge unit mixes heated return fuel with tank supply to warm the mixture before it reaches the engine filter.

A storage groove accumulates condensed water in the exhaust gas recirculation intake passage before it reaches the compressor.

A fuel feed system evaporator heater adjusts its temperature to maximize heat flux during vaporization.

A system combining infrared radiation excitation with hydrogen gas addition to improve fuel homogeneity in internal combustion engines.

A shaped heat conducting body interfaces thermoelectric generators with engine tubes to improve geometrical adaptation and contact pressure.