Silencing Apparatus TRIZ Cases

Dual thermal insulation sections protect thermal-fatigue weak zones by reducing temperature and stress while maintaining high insulation in non-weak areas.

High-molybdenum steel alloys replace expensive nickel materials in exhaust ducts, balancing corrosion resistance against material cost.

A silencer design uses a bypass pipe and passive control element to direct gas flow through an acoustically unseparated interior space.

A muffler valve device adjusts exhaust gas flow using a segmented guide rod and elastic member.

Lateral bracket deflection eliminates radial friction damage and improves visual appearance during fastening.

A muffler baffle moves via a ball screw mechanism to adjust exhaust sound frequency, resolving electromagnet position control precision issues.

Removable exhaust gas treatment sections and main mixing chambers prevent flow leakages while simplifying maintenance of internal combustion engine systems.

Axial solder flow through a positive-locking structure creates a secure bond that prevents loosening under stress and temperature changes.

Laser cutting shapes a decorative plate inside the exhaust tip, resolving the trade-off between appearance customization and device complexity.

An exhaust chamber design relocates the control valve to simplify internal structure and facilitate maintenance.

Friction-based retention between inner sleeve and pipe projection eliminates expensive welding tooling while maintaining secure exhaust finisher connection.

A lateral attachment creates a partial cavity on the exhaust pipe body to enhance structural rigidity.

A spherical exhaust member reflects gas to dissipate pressure and reduce noise.

Tangential flow over a curved downstream wall uses Coanda and Venturi effects to cool hot gases from 600°C to 200°C within 100 mm without active systems.

A gas treatment apparatus merges the manifold and converter to reduce space while pulsating flow prevents soot clogging.

A calcined silica fiber blanket stabilizes thermal properties for durable exhaust insulation.

A sound absorber with openings covers a resonator chamber wall aperture to enhance acoustic resonance effects.

Pre-formed protrusions create an interference fit with rolled sound absorbing material, preventing axial slippage during vertical assembly.

A compact exhaust gas treatment unit reduces overall length through non-aligned inlet and outlet pipes extending alongside the main chamber.

A single-piece tubular shell integrates multiple exhaust substrates via non-coaxial interior regions.

Segmented muffler chambers redirect exhaust flow through perforated baffles to attenuate sound waves across broad frequency ranges.

A contoured inlet cover and domed perforated plate assembly direct exhaust flow within a compact housing structure.

A muffler protector integrates a metal member with a synthetic resin cover to manage heat distribution across the exhaust component surface.

A muffler uses Helmholtz openings in communication pipes to tune acoustic resonance within internal chambers.

A titanium alloy with copper and tin improves high-temperature strength.

Exhaust hanger base employs indexing studs and pilot holes to resolve positioning precision issues caused by large tolerance intervals in assembly.

Segmented exhaust paths with a controllable flap direct gas flow based on engine speed.

Segmented muffler bodies weld to annular partitions, resolving airtightness trade-offs in small engine exhaust systems.

A muffler shield with distinct longitudinal profiles reduces airflow turbulence, minimizing noise and vibration while maintaining structural support.

A dual-log exhaust manifold uses flexible bellows to accommodate thermal expansion in compact engine configurations.

Separates inflow chamber from casing shell to enable distinct material selection for corrosion resistance and cost reduction.

A dual-neck resonator cavity forms a standing wave to attenuate induction noise in engine systems.

A coaxial mixer duct shell routes fan exhaust through an interstitial channel to mix with core flow.

Partition walls with continuous holes prevent glass wool displacement from exhaust pressure while maintaining acoustic absorption.

Segmented expansion chambers and nested acoustic baffles achieve 60 dB attenuation from 31.5 to 8000 Hz without increasing housing length or cost.

A reflecting member converts pressure pulses into expansion waves to enhance flow pulse emission from internal combustion engines.

Ultrasonic vibration cleans plasma electrodes to prevent particulate accumulation and maintain stable discharge.

Orthogonal SCR and DPF arrangement suppresses vertical height to improve rear visibility while distributing connecting pipe load.

Balanced alloy composition resolves the contradiction between oxidation resistance and weldability in exhaust components.

Shielded exhaust systems use venturi gaps to cool ECUs and deflect moisture from sensors.

Segmented receiving pipes link via a single clamping mechanism to simplify maintenance while ensuring effective sealing against exhaust gas leakage.

Parallel partial silencers share a single manifold, reducing installation height while avoiding complex customization costs.