Internal Combustion Piston Engines TRIZ Cases

Engine coolant cycle heats gas pressure regulator to prevent icing during cold starts without adding system complexity.

Radial separation of scavenging openings and oil seal grooves reduces seal load while maintaining effective sealing against radially outward oil leaks.

A compact exhaust gas treatment assembly uses a meandering flow channel to enhance reactant mixing and vaporization within the housing.

A catalyst layer uses alkaline-earth metal sulfate particles sized 0.01 to 0.70 μm to protect precious metals.

A partitioned turbine lead-in route with variable valves directs exhaust gas to minimize energy loss and improve supercharging performance.

Compressed air atomizes urea reductant within a single pump housing, preventing condensation and improving nitrogen oxide reduction efficiency.

An induction heating coil generates a varying electromagnetic field to rapidly heat a catalytic converter substrate.

Asymmetric brackets and elastomeric dampers prevent improper orientation and impact damage to fragile diesel particulate filters.

Segmented planetary and carrier bearings distribute mechanical loads to resolve cantilever support strength issues in the engine.

A waste heat recovery device uses exhaust gas to drive a compressor that pressurizes an intermediate fluid.

Thin-walled sleeve restricts heat conduction to SCR injector, preventing reducing agent aging and ensuring dosing accuracy.

Elastic sealing rims on the closing disk ensure tight contact with the open/close element for reliable fuel injection.

An air accumulator balances pressure fluctuations during idling to stabilize engine operation while delivering high output.

A trough-shaped piston crown recess guides fuel injection jets to minimize wall contact, reducing ignition device wear and pollutant emissions.

A check valve prevents higher-pressure butane from flowing into low-pressure propane containers, ensuring reliable fuel switching.

Integrating axial dual fans with upper and lower cooler brackets reduces assembly complexity while isolating vibrational noise.

A quaternary ammonium salt fuel composition enhances internal combustion engine performance by minimizing deposit formation and reducing fuel consumption.

Acidic oxide particles shield precious metals from sulfur poisoning, preserving catalytic activity and durability in exhaust gas purification.

An exhaust flow directing device mixes reductant with exhaust gas to reduce deposit formation in aftertreatment systems.

A flanged connector system uses a stand-off to create an air gap between the injector and exhaust duct.

Electronic control unit manages burner air and fuel flow using existing lambda sensors.

Segmented intake manifold passages distribute recirculated exhaust uniformly while minimizing pipeline resistance and preventing condensed water entry.

A spring-biased linkage mechanism maintains exhaust bypass valve sealing through mechanical force multiplication.

Control modules monitor soot loading to trigger zoned electrical heating, preventing peak temperatures that damage the filter substrate.

Dual sensor measurements diagnose aftertreatment oxidation capability.

Magnetic fields confine ionized gas to direct explosive pressure pulses toward output members, resolving energy loss and device complexity trade-offs.

Compression molded fiber air intake duct uses local quality differentiation to suppress standing waves while reducing radiated sound.

An engine system manages intake and exhaust airflow using integrated recirculation and manifold connection valves to deactivate specific cylinders.

Stacked plates with non-circular passages resolve fatigue fractures in high-pressure LNG vaporization while preventing clogging.

Bevelled inlet pipes contact a baffle plate to define the flow cross-section, ensuring uniform cooling across injection valves.

Tangential dosing and swirling flow resolve compact design trade-offs by improving NOx conversion efficiency through uniform reactant distribution.

Rotating additional rollers self-adjust to the cam profile curvature, eliminating elastic preloading and reducing mechanical loss.

A filler pipe system uses a porous vent plug to prevent siphon formation and backflow while maintaining structural integrity.

Monitoring EPS current detects parking maneuvers to prevent unnecessary engine shutdowns, reducing maintenance costs.

Correlates oxygen storage component degradation with hydrocarbon conversion efficiency to resolve heavy HC adsorption errors in diesel oxidation catalysts.

Normalizing oxygen storage capacity via temperature and airflow factors resolves false pass or fail decisions in catalytic converter monitoring.

Downward discharge openings mix exhaust gas with cooling air to reduce heat and noise exposure.

A dual DEF dosing system injects fluid upstream of close-coupled and main SCR catalysts to optimize NOx conversion.

Bypassing the intercooler during cold starts accelerates combustion chamber heating and reduces nitrogen oxide emissions.

Wastegate port wall positioned outside exducer interior thermally decouples from turbine inlet wall.

A gas mixer uses a rotationally displaceable asymmetric displacement body to adjust air and fuel flow cross sections.

A gas engine mixes low-concentration VAM gas with high-concentration CMM gas to create a stable fuel supply.

A post-treatment system reduces urea crystal build-up by halting additive supply and raising exhaust temperatures to burn off deposits.

Diesel particulate filters apply asymmetric catalyst washcoat on the inlet side, reducing soot-loaded backpressure while maintaining NOx conversion.

A butterfly-type exhaust valve with specific geometric parameters controls gas flow rates in two-stage supercharging systems.

Opposing multi-plume fuel sprays intensify charge air tumbling motion to improve mixing and reduce heat loss in opposed-piston engines.

A magnetic fuel treatment device uses a corrugated pipe and sphere magnets to magnetize hydrocarbon fuels.

Dynamic coalescer activation based on real-time fog detection reduces differential pressure and maintenance costs at gas turbine inlets.

Dynamic intercooler shutter adjusts tube openings based on ambient temperature to prevent overcooling and freezing condensate that harms engine startup.

Thermochemical conversion decomposes captured diesel soot into reusable fuels, reducing greenhouse gas emissions from advanced emission control systems.