Internal Combustion Piston Engines TRIZ Cases

Titanium dioxide coatings on engine components lower HC, CO, and NOx emissions while preventing delamination caused by thermal cycling.

A washcoat with titania support and platinum group metals maintains catalytic activity for carbon monoxide oxidation.

A catalyst layer uses a second compound to separate noble metal particles carried on a first compound.

A hybrid vehicle controller determines engine on and hysteresis map values using average speed and accelerator position to manage mode transitions.

Heat-treated zeolite catalysts reduce sulfur binding via ion exchange, resolving the contradiction between catalyst reliability and harmful sulfur effects.

A segmented guide element with varying cross-sectional areas manages airflow in internal combustion engine intake tracts.

Actuable valve directs air through a turbomachine to resolve contradictions between device complexity and operational stability.

A depression in the wastegate valve accommodates thermal expansion of the turbine housing.

A reducing agent tank heating system maintains urea liquefaction through sensor-driven thermal control.

A bi-fuel engine uses a pressure supply passage with a switch valve to direct flow.

Dual temperature estimation units monitor downstream cleaning device heat to enable reliable upstream catalyst abnormality detection.

Downstream oxidation catalyst mitigates SCR sublimation risks while processing circuits adjust dosing rates to maintain Tier-4 compliance.

A decoupling observer algorithm processes cross-sensitive sensor signals to simultaneously estimate NOx and ammonia concentrations in diesel exhaust.

High-pressure gas injection into the upstream intake passage increases axial flow rate, suppressing surge and extending the operating range.

Decouples torque transmission devices from wheels above a speed threshold to reduce viscous friction and fuel consumption.

An oxidation catalyst device uses an amperometric NOx sensor to measure outlet gas content over a time frame, correlating increased NOx readings with hydrocarbon oxidation performance.

Internal tab crimping reduces heat exchanger dimensions by eliminating external operation space requirements.

A restriction valve controls flow through a vent hole in an outboard motor cooling system to maintain water retention.

Segmented top plate absorbs thermal deformation to prevent cracks and maintain sealing integrity.

A pre-chamber ignition system uses a piston protrusion to compress the air-fuel mixture.

A prediction device calculates reducing agent freeze time using wall surface and fluid temperature data.

A spinning gas internal combustion engine utilizes rotation-dependent heat capacity to enhance fuel efficiency.

A particulate filter method controls soot burn rate by introducing additional oxygen upstream of the filter.

Substituted aluminum borate carriers suppress palladium sintering at high temperatures, maintaining durability and NOx removal efficiency.

A safety valve uses a ventilation mechanism to manage pressurized fuel flow within a common rail system.

A switching device with an air gap isolates the intake flap from cylinder head heat to maintain short flow paths.

A waste-gate valve with a protrusion housed in the channel improves exhaust gas flow-rate controllability.

A valve seat insert uses convex arcuate segments to optimize contact pressures and slow down recession.

Segmented environment analysis and genetic algorithm iteration optimize radar layout, resolving insufficient coverage and repeated deployment issues.

A laser-welded wastegate assembly uses an arcuate joint root to redirect exhaust gas and control rotational speed.

Axial spring prestress seals the cartridge pipe against the mounting pipe, eliminating radial bypass flows and annular contamination.

Retarding ignition timing based on throttle deviation suppresses acceleration shocks while maintaining engine power output.

A vehicle control system adjusts driving parameters using future position data to optimize energy consumption.

A lightweight neural network model uses separable asymmetric convolutions and pruning to reduce computational costs.

Inner funnel rests on outer funnel to transmit axial forces, preventing thermal expansion stresses and abrasion damage.

A control unit adjusts ignition timing angles during engine start to manage rotational speed.

An outward-opening injection valve accelerates fluid through a narrow annular channel to generate a fine spray.

A unified SSC-cruise control system manages engine stop and restart states using target and offset vehicle speeds.

Flat sensor detection surface on mixed-flow turbine wheel hub enables accurate optical rotation measurement.

A vehicle controller predicts lowest battery voltage using accumulated current and previous startup measurements to manage Idle Stop and Go entry.

An upstream selective catalytic reduction unit with bypass routing directs hot exhaust to the catalyst immediately after engine cranking.

Offsetting the downstream portion reduces pipe length and minimizes exhaust interference during merging.

Controlling short fiber proportions reduces scattering and maintains sealing effectiveness under high pressure exhaust gas.

A vehicle control unit calculates energy consumption during deceleration by comparing real-time data against reference values.

A rigid plastic seal jackets raised edges on a motor vehicle heat exchanger housing to ensure tightness between the unit and its container.

Periodic engine braking cycles raise exhaust temperatures above 450°C to remove cyanuric acid deposits, preventing blockage without increasing fuel consumption.

A pretreatment desulfurization control system injects a chemical agent into the marine fuel supply line to remove sulfur compounds before combustion.

An exhaust gas burner introduces hot gases to heat underfloor catalysts and particulate filters using secondary air injection.