Exhaust Apparatus TRIZ Cases

A sound-damping container adjusts its natural frequency via an internal line element to match dominant noise frequencies.

A tank sensor calibration method uses a predefined test liquid quantity to establish accurate signal relationships during manufacturing.

A control module connects secondary energy storage devices to an electric heater upstream of a particulate filter.

A multistage metal catalytic converter integrates a compressor stage to reduce exhaust backpressure in auxiliary power units and automotive engines.

Segmented lateral exhaust ducts with vanes reduce flow resistance, improving exhaust efficiency and uniformity.

Flame spray pyrolysis creates stable perovskite-alumina composites that resist high temperature aging while maintaining conversion efficiency.

Planar connecting surface joins actuator directly to vehicle structure, eliminating separate supports and reducing installation space.

A sensor system measures fluid level and quality by calculating the speed of light passing through a radiation path inside the container.

Replacing mechanical deformation with welding relieves mechanical load on the gas-tight weld seam between the inlet pipe and jacket.

A differential pressure anti-ingestion valve opens after engine shutdown to admit atmospheric air, relieving exhaust vacuum that causes water ingestion.

A dedicated sound tunnel transfers exhaust noise to the cabin, bypassing wind interference that disrupts auditory feedback.

Calibrates ammonia sensors against nitrogen oxide cross-sensitivity to correct drift and improve SCR system efficiency.

A vertical substrate coating method uses a piston to push liquid into channels while applying vacuum at the upper end.

A heated doser unit injects warmed reducing agent into exhaust streams to improve chemical reaction rates.

Standardized pie cut segments assemble into curved piping without specialized bending equipment, reducing manufacturing complexity and skill requirements.

Wet oxidation regenerates iodine to remove hydrogen sulfide, cutting energy use and sulfur oxide emissions.

Segmented heat shield sleeves and collars block heat flow channels to prevent sensor failure while maintaining access.

Inclined vent holes equalize pressure to prevent cavitation damage while maintaining magnetic behavior and plunger velocity.

A thrusting portion connects an exhaust passage to a dashboard framework member to direct impact forces toward a fragile zone.

A three-way flap valve uses a curved valve flap to expand the flow cross-section and direct exhaust gas between outlets.

Anisotropically conductive adhesive layers fill through holes to electrically connect multilayer circuit substrates.

Local quality reinforcement at the bracket joining surface increases resonance frequency to reduce vehicle noise.

Vertical offset of penetrating positions extends tail pipe length without increasing muffler width, resolving shape constraints inside the rear cowl.

A fluid line incorporates a volume reduction element to lower internal liquid capacity and ease pump suction demands.

A bearing mat escape space in the flange area accommodates radial material flow during half-shell canning.

Specified glass fiber composition resists urea chemical reactions to prevent holding force reduction during extended operating time.

Stacking the EGR cooler below the exhaust manifold suppresses lateral engine width increases caused by larger coolers.

Chamfered boss surfaces create gas circulation channels that eliminate cold spots and prevent water condensation on the oxygen sensor during cold starts.

Segmented hydrogen feeding in a loop reactor minimizes concentration fluctuations to narrow the molecular weight distribution of produced ethylene polymers.

A bracket system integrates hoisting hooks and accessory mounts into a single attachment portion to simplify structural design.

Segmented U-shaped crossmember contains silencer within hollow volume, resolving trade-off between compact exhaust layout and difficult maintenance access.

An oblique intake pipe with a straight connecting part mounts a fuel injector away from the body frame to prevent interference.

A woven laminate of superimposed metallic layers with varying mesh densities provides acoustic damping through resistance welding.

Elastic members repel punched-out holding seal members, eliminating catching damage and complex removal steps during exhaust purifier manufacturing.

A vehicle muffler employs a U-shaped exhaust pipe and segmented baffle plates to reduce booming noise and back pressure while maintaining engine output.

A holding tube with a reduced diameter portion guides exhaust gas flow into the ceramic catalyst body.

Differential pressure sensors detect catalyst accumulation to enable automated maintenance scheduling.

Mixed fiber mats seal ceramic monoliths against exhaust bypass during thermal cycling.

Insulated mounting table reduces heat transfer to sensors while consolidating wiring harnesses to lower packaging complexity.

Tertiary muffler placement above the pass-through plate reduces water ingress while multi-stage attenuation lowers noise.

Pressure sensors detect exhaust pulsations to determine fuel-air ratios, enabling rapid catalyst light-off and eliminating warm-up phases.

A pressure control valve stabilizes fuel delivery to an injection valve.

Successive air injection generates impulse waves that remove soot from NOx catalysts, reducing required air supply capacity and equipment size.

A fluid delivery device uses a magnetic coupling and U-shaped flow channel to eliminate bubbles in the pump head.

Alloying steel with copper and cobalt improves resistance to condensed water while lowering production costs compared to thick aluminum coatings.

Segmented cooling reduces exhaust gas specific volume, lowering turbo-compressor work while maintaining temperature for efficient energy recovery.

A spherical joint coupling exhaust pipes to damp engine vibrations through controlled sliding friction.

Dual shield arrangement directs exhaust flow to sensing face.