Internal Combustion Piston Engines TRIZ Cases

A metering apparatus uses a position transmitter to detect movable pump element reversal points and calculate precise reducing agent delivery volumes.

A turbocharger wastegate insert part regulates exhaust gas mixing and axial flow introduction within the turbine housing.

A start-stop device prevents automatic engine shutdown when the driver releases the brake pedal within a predefined time interval after stopping.

Segmenting fuel via a piston step space reduces soot and nitrogen oxide formation by coordinating jet timing and local temperature peaks.

Parallel fuel-to-coolant and air-to-coolant heat exchangers manage returning diesel fuel temperature via coordinated pump and fan control.

Twisted nozzle vanes minimize incidence loss by narrowing throat width on the shroud side to prevent hub-side flow separation.

Segmented charge air coolers reduce nitrogen oxide emissions by lowering compressed air temperature near surroundings without increasing cooler dimensions.

Nested stamped metal sleeves reduce the overall height and fluid volume of the DEF injector inlet port while maintaining sealing reliability.

A series turbocharger system paired with an electric compressor drives intake air to deliver boost pressure.

An engine system uses a parallel turbine-generator and motor-compressor to eliminate turbo-lag and improve throttle response.

Pivoting retaining limbs clamp fuel injectors to cups, eliminating direct metal contact and reducing noise transmission.

Enlarging the nozzle chamber diameter at the orifice positions resolves hot corrosion durability issues while maintaining combustion reaction progress.

Dual-curvature inner tubes prevent insulation cracking and peeling under thermal gradients while ensuring reliable electrical isolation.

Pressure-actuated secondary air valve in fuel supply system provides oxidizer during throttle release to reduce unburnt hydrocarbon emissions.

Forged holding elements integrated into a tubular base body counteract hydraulic reaction forces, preventing seal overload while reducing fastening complexity.

Injecting a low ignition temperature fluid into the exhaust stream regenerates the oxidation catalyst without requiring complex thermal management systems.

Offset channels in a fluid injector spray disc disrupt flow symmetry to generate a swirl pattern for improved fuel atomization.

Transforming ceria-zirconia into a pyrochlore phase resolves the contradiction between limited oxygen storage and purification efficiency in exhaust systems.

Local quality and composite materials resolve oxidation and cracking trade-offs in cast iron exhaust manifolds.

A twin scroll turbocharger uses a single actuator to drive two rotary valves for exhaust gas flow control.

Matching thermal expansion coefficients between stainless steel headers and copper tubes eliminates joint leakage without brazing.

Segmenting the coating into distinct palladium and rhodium zones reduces noble metal usage while maintaining warm-up and OSC performance.

A control apparatus manages liquid reducing agent injection by calculating unfreezing time and permitting flow only after thawing.

A controller adjusts fuel injection amounts using feedforward signals and adaptive feedback factors to maintain exhaust stream temperatures.

An ignition timing control device automatically selects between distinct fuel maps to optimize engine performance.

A shell and multi-tube heat exchanger transfers engine waste heat to diesel fuel lines, raising fluid temperature before combustion.

Reversing the pump circulation purges the entire injection line with hot exhaust gas, preventing urea freezing without complex heating devices.

A heat exchanger cools exhaust gas through plate contact, while a check valve prevents reverse flow from the central pipe.

A reciprocating engine cylinder compresses natural gas using integrated check valves to regulate flow between stages.

A sensor shield with flow divider beams creates a wake area to generate turbulent exhaust flow.

Cooling exhaust gas with seawater shrinks downstream filter size and cuts production costs.

A turbocharger rotor shaft incorporates a predetermined breaking point to maintain sealing integrity during mechanical overload.

A two-stroke exhaust valve cleans coke deposits by cycling between fully lowered and fully opened positions during normal operation.

A fuel economy control module toggles between performance and efficiency modes via a dedicated switch.

Electromagnetic field generator inductively heats catalytic converter substrate, reducing light-off time and cold-start emissions.

An exhaust gas inlet pipe acts as a reinforcing member within the outer case structure to stabilize the purifying device assembly.

Stacked heat sinks channel engine coolant through a full housing to protect electrical components from overheating in high-temperature engine compartments.

A Stirling engine converts exhaust enthalpy into mechanical energy using heat pipes.

Segmented plates form parallel flat tubes that reduce compressed air temperature below 80°C while minimizing device volume.

A piston crown cavity with a raised guide portion directs the air-fuel mixture toward the ignition plug.

Direct electric coupling decouples piston motion from mechanical constraints, enabling optimized expansion paths and fuel versatility.

An asymmetric tumble passage cross section rectifies low-load intake air flow and reduces collision interference with the intake valve seat.

A beveled washer region minimizes contact with the biasing member to prevent over-compression in turbocharger wastegate assemblies.

A line connector integrates an optical sensor unit into the flow-through channel to measure urea solution quality directly in the media line.

A close coupled SCR unit evaluates NOx conversion efficiency across multiple temperatures to record performance data for engine control.

Integrated brackets align exhaust components, reducing installation variance.