Internal Combustion Piston Engines TRIZ Cases

Hydraulic wedges rotate a piston to shift compression ratios, optimizing dual fuel efficiency.

Flow agitation and segmented cooling resolve lean mixture misfires by improving ignition reliability while managing thermal loads.

A reducing agent tank system uses radially inward elastic elements at the lower container wall opening to enable nearly complete emptying of the fluid.

An off-center upstream injector sprays fuel toward a movable air intake funnel, preventing fuel adhesion on inner walls and reducing flow resistance.

A controller calculates an updated selective catalytic reduction filter efficiency using a soot mass estimate.

Segmented guide bore geometry allows a sleeve seal to deform radially under pressure, resolving leakage contradictions in dual fuel injectors.

Additive manufacturing creates an integral intake manifold with internal nozzles, eliminating assembly complexity and seal leakage risks.

A compact aftertreatment system integrates a urea mixer with an internal heat exchanger to mix exhaust gases and dosed urea efficiently.

An asymmetric injection nozzle deviates adjacent fuel jets to reduce penetration depth and improve mixture formation.

An exhaust gas recirculation system mixes cooled exhaust with charge air to lower combustion temperatures in opposed-piston engines.

Parallel aspirator and ejector assembly manages motive flow direction to resolve turbocharger power versus vacuum generation trade-offs.

Integrating an SCR catalyst into a particle filter eliminates complex regeneration cycles while reducing nitrogen oxide and particulate matter.

A video detection system extracts local features from snippets to fuse global representations for authenticity probability.

A mixing unit blends excess vaporized gas with liquefied fuel before pressurization.

Electromagnetic pulse time delay measurement detects exhaust filter soot accumulation, reducing regeneration energy consumption and hardware complexity.

Monoblock wastegate design with mesh spacer preload reduces axial movement and leakage under thermal expansion.

Direct injection of secondary liquid fuel into combustion chambers lowers flame temperature and increases soot production.

An air-impermeable filter medium in a suction tank enables complete fluid discharge without introducing air into the system.

An electric heated catalyst warms a lean nitrogen-oxide trap upstream of the exhaust system to enable efficient regeneration.

Electronic controller weights acoustic impedance and pressure drop data to determine soot load, reducing regeneration frequency and engine efficiency penalties.

Laser welding provides hermetic sealing while mica offers thermal isolation, reducing complexity in exhaust systems.

Segmented dosing module branches with independent valves resolve pressure fluctuations and enable precise NOx emission reduction.

Downstream additive injector supplies reagent to exhaust flow for particulate filter regeneration.

Segmented induction coils heat emission control device pins of differing lengths, resolving cold start temperature maintenance while managing system complexity.

A compound engine assembly with cantilevered rotors and shared bearing support reduces overall volume while maintaining rotational stability.

A dual spark plug control device manages ignition modes in pre-chamber engines to maintain stable combustion during operating point changes.

A selective catalytic reduction system uses a center inlet to split exhaust flow into separate upward and downward streams through distinct chambers.

A controller automatically switches between propane and natural gas supplies based on real-time pressure readings.

Meandering auxiliary air intake passage increases fluid resistance to suppress fuel turbulent flow without adding control valves or controllers.

A supplementary air inlet routes airflow from downstream of the throttle plate into the combustion chamber to enhance mixing.

A Rankine cycle receiver sits below the sub-cooler to fit tight engine compartments while a pump manages fluid transfer.

Integrating a thermoelectric module within the cylinder liner structure converts waste thermal energy into electricity, reducing engine heat loss.

Partitioning the fuel tank interior creates a dedicated urea storage chamber, maintaining machine dimensions while enabling compliant exhaust gas treatment.

A biasing wave spring inside the pin hole centers the connecting pin, eliminating free movement and reducing chattering sounds caused by pulsation pressure.

A controller anticipates SCR catalyst temperature transitions to modulate reductant dosing and exhaust NOx concentration.

An annular seal on a movable wall member varies bypass flow through axially spaced ports, managing cylinder pressure during engine braking.

A fuel reformer coated with aerogel insulation maintains catalyst temperature using exhaust gas heat.

Dynamic coolant flow control maintains injector temperature while reducing unnecessary power consumption from constant pump operation.

A combination park and ignition switch integrates transmission range selection with engine start-stop control into a single actuator.

Segmented particle screens filter impurities from liquid reducing agents, preventing blockages and eliminating frequent maintenance.

A cryogenic manifold system balances pressure across multiple portable tanks using a dedicated pusher tank vaporizer.

Segmented honeycomb diffuser increases exhaust gas flow uniformity through large selective catalytic reduction beds, resolving back pressure trade-offs.

Variable cross-section oil galleries cool complex diesel piston crowns, preventing hot spots in forged combustion bowls.

Rapidly opening the exhaust valve reduces combustion chamber pressure before intake, preventing blow-by and pre-ignition in dual-fuel engines.

A turbocharger cooling chamber houses a coiled wave spring to push out penetrating shafts while exchanging heat with coolant.

A metal oxide barrier between atomically dispersed platinum group metal complexes prevents particle growth and sintering at elevated exhaust temperatures.

Multiple electric superchargers expand the exhaust gas recirculation driving region by actively pumping gas regardless of pressure differentials.

A zero-governor fitting structure uses a dual-depth fuel tank to mount the regulator on a vibration insulation gasket.

Abnormality diagnosis device corrects diagnostic parameters based on pump discharge capacity.