Internal Combustion Piston Engines TRIZ Cases

A heat exchanger cools turbine exhaust gas using a circulating working fluid to prepare the stream for catalytic treatment.

Hybrid composite actuator arm with flexible polymeric section eliminates sliding friction and vibration in turbochargers.

Passive Venturi mechanism draws secondary air via pressure differential, resolving complexity trade-offs while reducing component temperatures.

A backbone network training method selects target weights based on cumulative adjustment amounts to optimize computational resource usage.

Additional valve unit establishes fluid connections between combustion chamber and multiple systems, reducing device complexity.

A multi-stage turbocharging system with a thermal bypass valve assembly that directs exhaust flow around turbine stages.

A controller calculates discharge plasma length using secondary voltage and minimum value data from the ignition coil.

A compact after-treatment vessel integrates a diesel oxidation catalyst and catalyzed filter within a single shell to process exhaust streams.

Integrating a coolant passage into the exhaust manifold cools exhaust and EGR gases, eliminating separate EGR coolers and reducing thermal cycling stresses.

Positioning a turbine-generator in the compressor bypass flow path mitigates surge while recovering wasted energy to improve fuel economy.

A crank permission system generates start signals using stored gear data when transmission reports fail.

Segmented heat sinks prioritize cooling of the injection valve while protecting electromagnets, enabling reliable operation at 160°C.

Quaternary ammonium additives transform harmful particulates into manageable ash, extending filter life and reducing maintenance intervals.

Fuel-based surface combustion rapidly heats exhaust gas to catalyst activation temperature, preventing harmful emissions during engine start.

Replacing platinum group metals with transition metal oxides on aerogel supports reduces environmental harm while maintaining thermal stability.

Segmenting exhaust gas flow through a heated catalyst reduces back-pressure while maintaining rapid system heating during cold starts.

A segmented heat shield with an internal cooling cavity and radial gap protects surrounding components from hot exhaust surfaces.

A closure flap deflector with a 2 mm chamfer reduces gas flow speed and guides gases diffusely within the bypass duct.

A dual adaptive training method updates photonic neural network parameters using similarity and task loss functions.

A neural network estimates exhaust emissions to replace unreliable sensors in harsh diesel environments.

Control unit prevents false diagnoses by setting thresholds for adsorbed reducing agent amounts, resolving ambiguity between NOx and ammonia sensor signals.

A thermoelectric generator converts exhaust waste heat into electricity while cooling the gas stream to promote water condensation.

Housing geometry directs exhaust gas swirl to mix reductant, reducing thermal mass and enabling faster light-off.

A vortex tube heat exchanger uses fuel as the working fluid to transfer thermal energy from hot gases.

An SCR catalytic converter generates its own reducing agent through onboard catalysts, eliminating the need for external urea or ammonia injection systems.

A bypass fluid connection circulates medium through a dosing device to maintain thermal stability.

Varying contact member thermal resistance prevents upstream thermal overload and expands operation temperature range without bypasses.

Upstream reductant dosing maintains optimal NO2 to NOx ratios despite DOC and DPF aging, preserving SCR efficiency.

A composite electromechanical actuator housing combines a plastic containment body with an aluminum reinforcement cage to drive turbocharger vanes.

A dual-fuel fuel injector uses a ring channel to control second nozzle needles for gaseous fuel discharge.

Acoustic monitoring of pump signals detects frozen fluid, preventing ice pressure damage while reducing operational delays.

A variable geometry turbocharger nozzle vane features an asymmetric end surface with a linear portion on the non-support wall side.

Radially outward air guide section on injection tube enhances intake turbulence, preventing atomizing screen clogging and backfire risks in hydrogen engines.

Positioning the gas return valve outlet in the tank center reduces compressor power by avoiding high pressure heads during full or empty cargo states.

A fuel injector premixing tube mixes air and fuel before injection.

Optimized ceria and baria crystallites prevent sintering, preserving NOx storage capacity after thermal aging.

A circumferential gap in the guide bushing protects the sealing ring from scoring and jamming.

A fuel system heat exchanger transfers thermal energy from exhaust gases to fresh air for fuel heating.

Vertical fuel piping placement prevents breakage during front collisions by keeping the conduit clear of retracted intake manifold components.

An EGR device uses volume differences in the chamber and introduction passages to distribute exhaust gas recirculation across cylinder subsets.

Segmented monitoring periods enable precise ammonia slip detection using a single cross-sensitive nitrogen oxide sensor type.

An interference fit joins the valve housing to the device housing, resolving the contradiction between reliable reagent delivery and ease of manufacture.

Segmented catalyst layer placement on partition walls increases exhaust gas contact opportunities, resolving limited purification efficiency.

A biasing cam mechanism reduces axial play in a turbocharger wastegate shaft, preventing rattling noise while maintaining effective sealing performance.

Segmented couplers arranged in the front-rear direction reduce wire routing space while accommodating power unit swings.

A 30 mm piston bowl lip chamfer radius improves fuel-air mixing and reduces soot emissions in scaled-down internal combustion engines.

A control apparatus detects brake operation amount to manage engine automatic stop inhibition.

Flow restrictors create pressure differential across porous filtering medium to maintain gas flow continuity when particulate matter clogs the filter.

Conductive contact-making means dissipate electrostatic charges from hydraulic filter elements to prevent spark discharges.

Crankshaft-driven pressure and filtration protect the nozzle against blockage, ensuring reliable conversion in frozen exhaust streams.