Internal Combustion Piston Engines TRIZ Cases

Segmented thermoelectric legs and fins in a central exhaust channel increase heat transfer efficiency while reducing backpressure and thermal stress.

Engine vibrations damage catalysts in water jets. A damper section and flexible pipe absorb these forces, protecting the converter from displacement.

An orthogonal exhaust purification system aligns central axes to minimize right-left width while maintaining nitrogen oxide reduction performance.

A re-entrant piston bowl with a protuberance splits gaseous fuel jets into multiple plumes directed toward specific mixing zones.

Vacuum soldering joins upper and lower piston parts using high-temperature material, eliminating complex mechanical assembly steps.

Mixed dopant cerium oxide support enables effective low temperature NOx storage and retention for internal combustion engines.

A pressure-responsive valve in a generator fuel tank breather passage blocks liquid fuel escape during normal operation.

Arcuate oil passage in turbocharger center housing prevents lubricant coking and bearing failure without adding water coolant complexity.

An external motor drives a parallel link to adjust the intake funnel position, preserving fuel tank volume while maintaining airflow efficiency.

A partition plate separates an engine intake passage into two distinct flow channels to generate a controlled tumble vortex within the combustion chamber.

A three-stage fuel injector uses a pre-chamber to mix hot exhaust gas with fuel for improved atomization.

Curved spacer members position radially inward to reinforce guide rings, reducing turbulence and improving variable geometry turbine efficiency.

Electromagnetic induction and electrohydrodynamic heat transfer quickly raise substrate temperatures, eliminating cold start emissions.

Automatic start-stop system detects path obstructions via sensors to prevent vehicle creep during engine restart, ensuring safe standstill.

A downward sloping intake passage with a larger outlet cross section allows water to flow out by its own weight, preventing engine compartment flooding.

A dual fuel engine system adjusts hydrogen and hydrocarbon mass flow ratios during acceleration to control surge margin while maximizing vehicle range.

A segmented thermoelectric generator unit mounted between exhaust pipes maximizes temperature differences across elements.

Ammonia provides immediate NOx reduction during cold starts, preventing urea freezing issues that limit SCR catalyst performance.

Segmented brake pedal thresholds resolve conflicts between system activation reliability and operational convenience, preventing unintentional deactivation.

A turbine housing features a second flow path connecting the inlet directly to a downstream space, bypassing the impeller region.

Segmented heating devices maintain gas temperature above critical thresholds during cold starts, preventing injector malfunction.

Optimized washcoat porosity and pore volume reduce NOx slip during high-speed operation.

A hydraulic fluid chamber and locking piston assist gas exchange valve closure.

A reverse offset wastegate valve assembly bypasses the turbine wheel during cold starts to maintain exhaust gas temperatures.

Switches steady-state characteristics to secure throttle valve margin, improving intake air responsiveness under low atmospheric pressure.

Adjusting exhaust recirculation mass and cooling optimizes turbocharger boost pressure during vehicle deceleration.

A variable drive mechanism transmits exhaust energy to the crankshaft across multiple gear ratios.

Preloading elements compress exhaust aftertreatment units, preventing bypass gaps and ensuring complete flow.

Primary coupler and diverter passage route low-pressure fluid from a high-pressure pump to an auxiliary delivery system.

An abnormality detection apparatus for electrically heated catalysts uses a determination unit to assess insulation resistance values.

Modular assembly pumps liquefied gas, evaporates it via a heat exchanger, and injects gaseous fuel into two-stroke engine cylinders to resolve pump complexity.

Mixed camshafts with variable adjusters optimize valve timing to resolve piston collision risks while improving expansion stroke utilization.

Controlled porosity in sealing portions prevents peeling during canning and erosion from particulate leakage, enhancing structural integrity.

Optimized ferritic stainless steel composition reduces specific gravity below 7.6 g/cm3 while maintaining high-temperature strength and corrosion resistance.

A stacked plate heat exchanger uses corner inlets to route cooling fluid through corrugated fins for efficient thermal exchange.

A rotary engine side wall features a flared abutment section with a hard coating ending at a stress relief groove on the flared portion.

An acoustic-wave generator converts exhaust heat into sound to warm upstream gas.

Catalytic layers with uniformly distributed acidic oxides protect precious metals from sulfur poisoning while maintaining high exhaust purification activity.

Adaptation factors adjust SCR metering valve opening times to compensate for stationary pressure deviations caused by pump and valve tolerances.

A modular multi-stage supercharger design enables independent module assembly and component reuse across configurations.

Consolidating individual engine controllers into a single unit reduces system complexity while maintaining precise emissions control across the facility.

A super-turbocharger uses a high-speed traction drive and continuously variable transmission to manage rotational speed.

A high viscosity coal slurry fuel utilizes a blast atomizer injector to break down dense carbonaceous particles for efficient combustion.

Liquid phase gaseous fuel flows through injectors to absorb heat, preventing overheating and deposit accumulation during gas mode operation.

An exhaust bypass valve routes gas around the turbine to reduce turbo lag and improve power output.

A mechanical fuel pump incorporates a deactivating element that switches the device between active and inactive states, reducing parasitic losses and noise.

Small cell-pitch cells in the boundary region mitigate heat stress concentration, inhibiting crack formation under temperature fluctuations.

Calculating signal energy ratios from pressure measurements differentiates blocked lines from frozen states, reducing false detections in SCR systems.

A reductant distributor spatially distributes undispensed fluid across a tank to maximize thermal contact with frozen contents.

A multi-stage turbocharger system uses a rotary valve to direct exhaust gas between high-pressure and low-pressure turbines.