Silencing Apparatus TRIZ Cases

An exhaust valve assembly employs a torsion spring and rotatable shaft to regulate flap opening via gas pressure, eliminating electronic actuators.

A fluid sensor protection assembly uses vertically spaced flow-through openings and a continuous passage to enable unobstructed liquid movement.

A performance monitoring unit calculates mean correlation coefficients between error signals and modelled anti-noise to evaluate adaptive filter status.

An inclined catalyst casing inside a trapezoidal exhaust muffler changes gas flow direction to extend purification length.

A muffler assembly uses a movable butterfly valve to adjust exhaust gas flow resistance within divided chambers.

A cross-pipe exhaust system splits and recombines flows to equalize pressure across cylinder banks.

An auxiliary exhaust pipe vents gases via side outlets when mud or snow blocks the main outlet, preventing system damage.

Patsnap Eureka case on a tubular exhaust gas treatment assembly unit with a radially prestressed locking fixing device for secure inner housing retention.

Internal flow-guiding elements separate exhaust streams to prevent urea deposition on bellows walls, maintaining vibration mobility.

Orienting diffusion alloyed sheet edges inward isolates primary substrates from salt spray and urea, preventing corrosion without complex post-forming coatings.

A vehicle exhaust muffler relocates the spark arrester to an exit communication pipe with a flow path narrowing portion.

A diverter blocks exhaust gas near a resistive opening to dampen resonance, preventing gas egress while minimizing back pressure.

An expansion chamber and muffler subsystem lower blast pot noise below 110 dB while diverting abrasive particles downward to prevent equipment wear.

Adhesive bonding connects the exhaust panel to the base carrier, creating a thermal barrier that reduces heat transfer.

Segmented channels offset transit times to reduce maximum sound amplitude, solving resonance failures in variable-speed engine environments.

A muffler unit with a segmented housing uses inserted inlet and outlet bottoms to resolve welding complexity while maintaining structural strength.

Nesting the actuator inside the flow path reduces installation space while protecting components from external damage.

Asymmetric exhaust pipe lengths preserve original engine sound and torque while resolving noise reduction constraints in V-type internal combustion engines.

Segmented exhaust routing wraps around the engine to balance weight distribution while maintaining ground clearance.

Slit-separated electrode layers on ceramic honeycomb structures suppress vertical cracks from thermal expansion differences during electric conduction heating.

Communication holes connect an inner tube to an outer tube resonance chamber, reducing air flow noise while maintaining exhaust efficiency.

Variable radial clearance between inner and outer pipes prevents retention member displacement while reducing turbulent flow noise.

Composite inorganic coatings stabilize melt viscosity to prevent excessive flow from weld beads, ensuring consistent heat insulation properties.

A hollow cylindrical sampling tube channels central exhaust flow to a wall-mounted sensor, resolving measurement accuracy versus installation complexity.

An air-permeable inner wall eliminates additional damping layers and prevents whistling noises while maintaining the Helmholtz effect.

A connecting device uses a funnel-shaped nozzle and fixation member to join flexible conduit tubes without welding.

A buffer chamber and flexible wall absorb pressure fluctuations to minimize substrate vibrations during two-phase fluid extraction.

A muffler uses baffles at 45-degree angles to form a helical configuration within the housing.

A coaxial double pipe silencer uses a spiral acoustic absorbent to extend the noise absorption path within a compact radial space.

A transverse muffler design fits around a vehicle spare tire well to increase internal volume.

Integrates a catalyst unit and bypass conduit within a common housing, allowing bypassed exhaust gas to heat the catalyst while reducing structural complexity.

Constricted inlet and outlet parts suppress standing waves to reduce low-frequency noise without increasing weight.

A symposer device transmits exhaust noise through a dedicated duct to the passenger compartment.

An aluminosilicate adsorber module captures nitrogen oxides from exhaust gas streams using oxygen-assisted oxidation at low temperatures.

A snap-action exhaust valve uses a mass damper to dampen vibration harmonics and minimize back pressure in the open position.

Constricting the collecting duct outlet increases exhaust velocity, resolving low-speed torque insufficiency without adding external space.

A cast connection funnel features a pipe socket extending into the pipe interior to thermally isolate the joint area from hot exhaust gas.

Helical and sinusoidal flow channels generate vortical flows to enhance diffusion within catalyst substrates.

Partitioned chambers and a throttle portion extend the sound attenuation path, reducing size while maintaining engine output power.

A vacuum-sealed metal foil bag encases heat-resistant fibers to insulate vehicle exhaust pipes.

Defined apertures and expanded pipe portions resolve manufacturing tolerance contradictions for reliable weld sealing.

A two-stroke engine exhaust resonator integrates a catalytic converter within an insulated casing to regulate operating temperature.

A muffler uses a single partition with supporting bosses to hold a catalytic converter, reducing volume while maintaining stability.

A spatially separated exhaust flow zone encases the first catalyst to drive convective heat exchange.

A spun extrusion method forms side entry exhaust inlets on muffler shells using a rotating spinning tool.

Hot rolled ferritic stainless steel sheet with optimized copper and niobium content.

Expansion chamber stirs exhaust gas to prevent condensation on the oxygen sensor.

A construction machine aftertreatment mount top plate uses reinforcing members to enhance rigidity.

Optimized high-Cr high-Ni austenitic cast steel enhances yield strength and elongation in exhaust components.