Internal Combustion Piston Engines TRIZ Cases

Air injection after the catalyst treats non-stoichiometric combustion products by oxidizing carbon monoxide and hydrocarbons.

A supercritical carbon dioxide Rankine cycle system vaporizes working fluid using waste heat streams to generate mechanical energy through expansion.

Removing cerium oxide from the mixed oxide support prevents rhodium oxidation while maintaining thermal stability and DeNOx activity.

Amorphous alumina fibers react with inorganic binders during firing to resolve weak interfacial bonding and improve mechanical strength of the honeycomb body.

Integrating a longitudinal gas fuel channel into the cylinder head eliminates separate common rails, reducing device complexity and development costs.

A turbine housing injects secondary fluid into the shroud clearance to enhance momentum transfer and reduce tip leakage losses.

A heated injection nozzle uses a threaded flow channel to increase reducing agent residence time and evaporation.

Compressed air from a mechanical charger flows through valve-controlled tubes to cool the rotary engine core, maintaining performance at high altitudes.

Non-uniform axial heights at scroll outlet ends suppress exhaust gas leakage between dual turbine scrolls by modifying pressure gradients and flow rates.

A transport refrigeration unit control system monitors exhaust back pressure and temperature via sensor arrays to adjust power generation operations.

Segmented primary and secondary valves prevent fluid loss during pump removal by enabling automated purging through hollow actuator tubes.

A rotary piston engine uses a counter-piston to follow the rotor contour for precise sealing.

Elastic sealing member fills the gap between core and housing, blocking air bypass paths that reduce heat exchange efficiency.

Radially retractable vanes alter compression ratios to resolve fixed cycle limitations in rotary engines.

An inclined annular inlet jet creates turbulence to decompose urea spray, preventing sidewall deposits and ensuring uniform ammonia mixing.

Asymmetric land heights manage thermal expansion and minimize hydrocarbon emissions.

A method estimates particulate filter soot load by calculating pressure gradients from back-pressure measurements and volumetric flow rate data.

A valve member controls exhaust gas exchange between left and right tracts, reducing streaming noise while maintaining engine performance.

Backflow preventers in the coolant circuit drive natural circulation below boiling point, preventing component damage after engine shutdown.

Segmented reactors prevent byproduct fouling during low-temperature ammonia generation from urea.

Angular contact ball ramps increase clamping forces in planetary traction drives, resolving slip and wear issues during high torque operations.

Spiral-coiled finned tubes maximize surface area within a round cross section, reducing manufacturing complexity and material usage.

Segmented passages and an outer case discharge condensation, preventing frequency deviation caused by mass accumulation on the vibrating membrane.

Mixed potential electrodes with distinct sensitivities enable selective ammonia and nitrogen dioxide measurement in exhaust systems.

Vertical interference muffler reduces lateral air intake noise transmission and separates water using gravity-driven drainage within the engine cover.

Segmented intake manifold baffles isolate carbon deposits from butterfly valves while ensuring uniform mixing of recirculated exhaust gases and intake air.

A diesel engine exhaust device switches regenerating modes to prohibit processing when conditions are inappropriate.

Predictive feedback algorithms regulate turbocharger shaft speed to prevent thermal inefficiencies and extend component lifespan under varying pressure ratios.

A dispensing nozzle adjusts flow rates via a sensor device interacting with the tank signal generator.

Bandpass filtering and squaring of pressure loss signals create a robust pressure quotient that eliminates sensor offset errors for reliable filter monitoring.

Amorphous insulation layer on inner tube curvature sections prevents thermal stress damage in electrically heated catalytic converters.

Mounting the turbocharger transversely on an upper wall prevents water ingress and reduces bearing loads during tilting.

A centrifugal impeller accelerates contaminants toward a filter subassembly, removing harmful emissions while avoiding complex cooling structures.

A charge-fed pre-chamber assembly directs air-fuel mixtures to ignite within a dedicated volume.

A fuel tank system transfers liquefied gas fuel via a sending part to lower temperature quickly, reducing refueling time.

Asymmetric combustion surface directs heat flow to lower operating temperatures, eliminating cooling galleries that increase weight and manufacturing costs.