Internal Combustion Piston Engines TRIZ Cases

A free-piston linear apparatus uses a heat exchanger to transfer residual exhaust heat to the gas expansion chamber.

Merges rotary engine core, compressor, and turbine sections via a common inlet to resolve nacelle space constraints while recovering exhaust energy.

Segmented layers with low conductivity and smooth surfaces reduce hydrocarbon emissions while maintaining thermal insulation.

A gas injector integrates a sealed lubricant chamber with a hydraulic braking device to manage moving parts.

An abnormality detection apparatus for electrically heated catalysts adjusts energy thresholds based on initial temperature to ensure accurate diagnostics.

Incorporating catalytic materials directly into plug structures reduces backpressure while maintaining mechanical strength for efficient NOx conversion.

Segmented housing shells integrate cooling fluid channels and air gaps to manage thermal expansion stress while preventing overheating damage.

A helical spring extends into a media line and connector to transfer heat from electrical resistance.

An NH3 oxidation catalyst in a NOx sensor converts interfering ammonia to nitrogen, resolving cross-sensitivity errors in SCR systems.

Integrating an ignition liquid supply within the nozzle eliminates separate pilot injection systems, reducing device complexity and emissions.

A compound cycle engine uses a velocity turbine to extract kinetic energy from exhaust pulses for turbo compounding.

A mixed potential cell apparatus derives ammonia concentration using a modified logarithmic formula incorporating specific constants and base values.

A turbine valve element with a penetrating flow channel enables fluidic connection between separated exhaust gas paths.

De-swirl vanes expand the exhaust stream mean diameter to lower tangential velocity, preventing flow separation in compact turbochargers.

A plasma nozzle atomizes and pyrolyzes urea solution using a discharge gap to generate ammonia.

Gravity-fed drainage channel in the intake port wall removes condensate to prevent combustion disruption and enable higher exhaust gas recirculation rates.

NOx sensors detect unburned fuel gas in the outlet channel, enabling shorter flush times and reducing explosion risks.

Periodic lean operation burns carbon deposits on water gas shift catalysts, extending durability while sustaining hydrogen production.

A gas pressure reducer uses a movable slider inside a rotating jacket to adjust internal narrowing.

A vehicle controller manages automatic engine stop and restart sequences through dynamic permit condition adjustments.

Segmented heating grid with relief structure absorbs radial thermal expansion to prevent short circuits and hot spots in vehicle exhaust purification systems.

Reverse flow mechanism integrates exhaust treatment devices within compact housing to reduce system length while ensuring additive evaporation.

A control device switches between high-pressure and low-pressure exhaust gas recirculation modes based on ammonia and NOx concentration differences.

An inverted insulator design directs travel wind through a forward-facing opening to cool the supercharger, resolving thermal shielding conflicts.

Peripheral bypass passages integrated into the outer casing reduce design complexity and prevent performance loss from gas leakage when valves close.

A dual pump reductant delivery system uses overrunning clutches to switch between pumping and suck-back states by reversing motor rotation.

Bending the coil around a disk-shaped ferrite core eliminates double peak errors in thin compressor wheels.

Integrating a particulate filter within the turbine housing captures soot before it causes sticking, preserving nozzle ring stroke and operational reliability.

A multi-stage turbocharger system uses a heat exchanger to transfer exhaust thermal energy to compressed air before turbine entry.

Cooling fan placement stabilizes the exhaust gas purification device assembly and protects electric sensors from radiant heat.

Segmented casing with dual backflow prevention plates stops exhaust recirculation into the catalyst passage, preventing SCR catalyst degradation.

Electric motor control unit determines crankshaft position via current monitoring for reliable engine restart.

Engine controller increases exhaust gas temperature during optimized locomotive trip segments to oxidize trapped particulate matter.

A pressure reducing device regulates EGR flow pressure to maintain control under high differential conditions.

A PTC heating element housed within a metallic body indirectly heats fuel flow through thermal conduction.

A turbo-generator system adjusts electrical load to maintain turbine speed within safe limits.

Segmenting the compressor into parallel wheels on a single shaft reduces turbo lag while maintaining minimal system complexity.

A CNG fuel management module provides high-pressure plug-and-play connections for multiple fuel tanks and a low-pressure output to the engine.

Composite cladding shields the prechamber ignition body piece from high temperature oxidation, extending service life and reducing maintenance downtime.

Estimates disk temperature from braking work to adjust engine restart timing, preventing noise during high thermal conditions.

A diesel exhaust fluid delivery system uses a backflow dosing module to manage pressure and flow.

A double shell SCR mixer injects reducing agent into a heated swirl flow, preventing solidification on inner surfaces while improving purification efficiency.

High-aspect-ratio pores in the catalyst coating layer improve warm-up performance by increasing gas diffusivity.

Segmented orifice geometry pre-expands combustion gases to lower exit velocity, preventing engine mis-fire in gaseous fuel engines.

Oscillating ripples on the piston bowl side wall generate localized recirculation vortices that improve combustion efficiency and reduce soot emissions.

A secondary diesel particulate filter measures differential pressure to determine soot deposition in the main exhaust line.

Dual models calculate precise urea injection amounts based on ammonia loading and efficiency, preventing crystallization in exhaust pipelines.

RFID tags store ammonia quantity data to prevent accidental release risks and optimize replacement scheduling without adding active sensor complexity.

Venturi ducts direct fuel jets through converging sections to create low-pressure zones that entrain air, reducing soot formation from inadequate mixing.

Offsetting the closed area portion of a rotary valve reduces collision noise from air pulsation while maintaining rotational balance.