Internal Combustion Piston Engines TRIZ Cases

A biasing portion restrains wastegate valve rotation relative to a support plate, preventing frictional sounds and noise.

Carrier gas flow through a heated honeycomb structure equalizes temperature distribution, preventing urea deposits during high-power ammonia production.

A variable valve actuation system adjusts intake timing using solenoid-controlled fluid pressure and cams featuring a constant lift boot portion.

A wall-flow filter paired with a flow-through monolith featuring identical storage functions for gaseous substances in internal combustion engine exhaust.

Refrigerated liquid fuel injected during compression absorbs latent heat, limiting temperature rise to prevent engine knock.

A thermal energy store absorbs heat from an exhaust dosing module, preventing damage during cooling interruptions.

Momentarily rich air-fuel ratios direct reducing agents to the downstream filter catalyst for regeneration while keeping the upstream oxidation catalyst cool.

A ceramic composite mixes infrared-emitting metal oxides with pyroelectric materials to amplify emissions in the 3-20 μm range.

Cascade organic Rankine cycle systems use nonpolar solvents to vaporize working fluids across multiple temperature stages.

Dual pressure sensors in injection lines calculate liquid reducing agent flow rates for exhaust systems.

Conductive jacket around delivery hose monitors electrical conductivity for immediate leak detection.

A control method adjusts ignition advance degradation based on knock event timing.

Audible feedback from airflow stops when tank fills, preventing overflow without electronic sensors.

A leakage treatment member treats exhaust gas bypassing the primary aftertreatment unit.

Regenerative Brayton cycle uses exhaust heat to maintain MIEC membrane efficiency, separating nitrogen to prevent NOx emissions.

Tubular connecting portion expands air intake chamber capacity downstream of supercharger discharge port.

Asymmetric through holes prevent radial flow attenuation to maintain ignition performance and flame ejection efficiency.

A vertically mounted exhaust gas treatment device uses a dual-substrate catalyst configuration to process engine emissions.

A compound cycle rotary engine system combines a Miller cycle rotary combustion unit with series turbines to extract energy from exhaust gases.

Hot exhaust gas decomposes urea in a vaporizer module, ensuring uniform ammonia distribution across the reactor without complex injection grids.

Merging expansion and compression into existing cylinders eliminates throttle losses and reduces charge exchange energy waste.

A deflector directs exhaust gases across an injector nozzle to reduce deposit buildup while a baffle increases gas velocity for accurate NOx detection.

A solenoid armature uses composite powder injection molding to enclose magnetic regions in non-magnetic material.

Segmenting multiple rotary engines into stacks joined by a common gearbox reduces bearing misalignment and carcass bending stress.

Resistive heating in a porous ceramic composite accelerates catalyst light-off, reducing cold-start emissions.

Tandem valve operation reduces device complexity by eliminating separate bypass components while maintaining two-stage combustion efficiency.

Vertical air intake piping protects the bypass valve from flying stones while improving engine cooling.

Retarded ignition timing stabilizes hand-held combustion engines, reducing speed fluctuations and noise emissions during partial load operation.

Phase change material between substrate sectors retains heat during engine stop-start cycles, reducing ignition time without increasing noble metal content.

Shallow recess geometry and modified nozzle angles distribute OME fuel mass while preventing bowl lip burning during combustion.

Thermal machine recovers expansion pressure via cold closed path, reducing exhaust-compression work loop and lowering weight, volume, and cost.

Insulated conductive holding blocks bypass current to prevent local overheating of uninsulated heating conductor sections.

Dual Lean NOx Traps and passive SCR remove nitrogen oxides from hybrid engine exhaust without reductant injection, lowering system complexity.

Mask orientation and angled intersection generate swumble flow to resolve the trade-off between turbulent kinetic energy and device complexity.

Electronic processor monitors generator output parameters via sensors to automatically disable receptacles when electrical thresholds are exceeded.

A thermo-electric engine generates electrical energy by converting thermal gradients from phase changes in gaseous mixtures.

Ammonium carbamate solution prevents urea deposits and maintains NOx reduction efficacy at low temperatures.

An engine intake passage features a brittle portion with lower rigidity adjacent to the fuel system component.

A lowered introducing passage discharges condensation from the vibrating membrane, preventing frequency deviation and noise volume loss in engine bays.

A resistance heating trace mounted directly on a rigid substrate ensures consistent heat transfer to operating fluids.

An integrated exhaust gas treatment system mounts a selective catalytic reduction device and ammonia storage tank on a common chassis frame.

Heated delivery lines protect flow controllers from freezing while sensors adjust valves to hold pressure.

An intermediary thermal barrier protects elastomeric seals from combustion heat, resolving the reliability versus temperature survivability trade-off.

A buffer air conduit directs compressor gas to turbo turbine sealing members, creating counter-pressure against the bearing housing.

Parallel parting planes orient housing joints with piston motion to reduce engine footprint and simplify manufacturing flexibility.

A control system detects tow-start conditions to prevent automatic engine shutdown.

An assist turbocharger directs high-pressure boost air to a fluidic variable turbine nozzle for precise throat area control.

Segmenting intake ports into a main port and sub port increases airflow volume while maintaining frame rigidity and reducing noise.

A variable volume pre-chamber igniter adjusts its internal capacity via a movable cap to deliver reliable ignition across varying engine loads.