| Patents for F01N 1 - Silencing apparatus characterised by method of silencing (8,998) |
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| 09/04/2001 | US6283246 Silencer |
| 09/04/2001 | US6283162 Thin boom tube exhaust pipes, method of sheet metal construction thereof, and exhaust systems which utilize such exhaust pipes for increased ground clearance on race cars |
| 08/30/2001 | DE10006231A1 Aktuator für das Abgassystem einer Brennkraftmaschine Actuator for the exhaust system of an internal combustion engine |
| 08/29/2001 | EP1128032A2 Double-walled structure and method of producing the same |
| 08/29/2001 | CN2445100Y High-efficient silencer for vehicle |
| 08/23/2001 | WO2001061164A1 Sound absorbing line |
| 08/23/2001 | US20010015302 Double-walled structure and method of producing the same |
| 08/23/2001 | US20010015301 Self-tuning exhaust muffler |
| 08/21/2001 | US6276044 Shaped multilayer metal foil shield structures and method of making |
| 08/16/2001 | US20010013443 Pneumatic hand tool exhaust muffler having inner and outer tubes |
| 08/15/2001 | CN1069734C Exhaust gas purification apparatus |
| 08/14/2001 | US6273772 Apparatus and method for multi-conduit waterlift engine silencing |
| 08/14/2001 | CA2218711C Sound attenuator with throat tuner |
| 08/09/2001 | US20010011780 Preformed sound absorbing material for engine exhaust muffler |
| 08/09/2001 | DE10004991A1 Helmholtz resonator with variable resonance frequency for damping IC engine air intake or exhaust gas noise uses controlled stops for altering neck opening cross-sections |
| 08/08/2001 | EP1021686A4 An improved sound attenuating device |
| 08/08/2001 | EP0724761B1 An active noise cancellation apparatus for a motor vehicle |
| 08/08/2001 | CN2441981Y Engine silencer with silencing material on pipe wall |
| 08/08/2001 | CN2441980Y Engine silencer with silencing material on end cover |
| 08/08/2001 | CN2441979Y Double tube silencer for engine |
| 08/08/2001 | CN2441978Y Silencing and purifying device |
| 08/08/2001 | CN2441977Y Silencing and purifying device for motor vehicle waste gas |
| 08/08/2001 | CN2441976Y Intaking air silencer |
| 08/03/2001 | CA2334081A1 Dual spring exhaust valve linkage assembly |
| 08/02/2001 | US20010010865 Flexible corrugated multilayer metal foil shields and method of making |
| 08/02/2001 | DE10002380A1 Schallabsorber für Schalldämpfer-Töpfe in Auspuffanlagen und Verfahren zur Herstellung des Schallabsorbers A sound absorber for mufflers pots in exhaust systems and methods for manufacturing of the sound absorber |
| 08/01/2001 | EP0941441B1 Method and apparatus for making preforms from glass fiber strand material |
| 07/31/2001 | US6267199 Automobile exhaust tube |
| 07/31/2001 | US6267193 Motorcycle muffler |
| 07/26/2001 | WO2001053665A1 Exhaust gas treatment device for internal combustion engine |
| 07/26/2001 | US20010009096 Exhaust passage control valve |
| 07/26/2001 | DE10000464A1 Flow switch for internal combustion engine; has feed channel, Coanda tulip, at least two outlets and displacement body with casing and flow surface, whose position can be changed in flow direction |
| 07/25/2001 | EP1118748A2 Exhaust passage control valve |
| 07/25/2001 | EP1117965A1 Reactive silencer for industrial air channels and its use |
| 07/19/2001 | WO2001051781A1 Exhaust gas system of an internal combustion engine |
| 07/19/2001 | WO2001051777A2 Flow switch |
| 07/19/2001 | DE10001532A1 Abgasstrang eines Verbrennungsmotors Exhaust system of a combustion engine |
| 07/18/2001 | CN1303992A Silencer |
| 07/17/2001 | US6260659 Silencer for internal combustion engine |
| 07/12/2001 | DE19964089A1 Vehicle engine exhaust silencer uses three disk proportionating damper valve wheel whose center disk pivots via threaded rod round axis to vary upward and downward decibel emission levels via outside disk holes. |
| 07/10/2001 | US6257754 Mixing device and flue gas channel provided therewith |
| 07/10/2001 | US6257367 Stamp-formed muffler |
| 07/10/2001 | US6257359 Air handling system for engines |
| 07/04/2001 | CN1302352A Noise attenuating apparatus |
| 06/28/2001 | DE19962379A1 Verfahren zur Herstellung eines Absorptions-Schalldämpfers A process for producing an absorption silencer |
| 06/27/2001 | EP1111207A2 Method for manufacturing an absorption silencer |
| 06/27/2001 | CN2436656Y Silencer for motor vehicle |
| 06/27/2001 | CN2436655Y Wide-frequency multi-section silencer |
| 06/27/2001 | CN2436217Y Cooking fume purifier |
| 06/26/2001 | US6251498 Soundproof heat shield member for exhaust manifold |
| 06/26/2001 | US6250422 Dual cross-flow muffler |
| 06/26/2001 | US6250075 Engine muffler |
| 06/20/2001 | EP1108864A2 Noise attenuating emission converter |
| 06/20/2001 | EP1108122A1 Device for catalytic exhaust gas purification |
| 06/20/2001 | EP1108121A1 Catalytic converter and resonator combination |
| 06/14/2001 | WO2001043119A1 A device at an acoustic liner |
| 06/14/2001 | WO2001042631A1 Exhaust system |
| 06/14/2001 | WO2001042630A2 Apparatus for treating a gas system |
| 06/13/2001 | EP1106796A1 Silencer |
| 06/13/2001 | EP1105628A1 Silencer cartridge |
| 06/13/2001 | DE19861018C2 Gesteuerter akustischer Wellenleiter zur Schalldämpfung Controlled acoustic waveguide for sound attenuation |
| 06/12/2001 | US6244918 Noise muffler-exhaust filter for a marine engine |
| 06/12/2001 | CA2039745C Single cavity automobile muffler |
| 06/06/2001 | CN1298059A Muffler for vehicle |
| 06/05/2001 | US6241044 Exhaust silencer and communicating pipe thereof |
| 06/05/2001 | US6241043 Muffler insert and process for the production thereof |
| 05/31/2001 | WO2001038701A1 Device for selectively cooling a motor vehicle engine exhaust gases |
| 05/31/2001 | WO2001038700A1 Active device for reducing engine noise comprising at least two exhaust outlets |
| 05/31/2001 | DE19956683A1 Device for influencing pulsating gases in internal combustion engine has processing stage receiving engine operating parameter, processing into output signal to switching element actuator |
| 05/31/2001 | DE19956165A1 Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits |
| 05/31/2001 | DE19956157A1 Exhaust gas regulator system for 2-stroke engines has two housing chambers connected in series via flow connection regulated by exhaust feed valve |
| 05/23/2001 | DE19955541A1 Exhaust gas device used in diesel engines has surface of exhaust gas channel equipped with material that has low adhesion with solid and liquid components of exhaust gas |
| 05/17/2001 | DE10055535A1 Exhaust silencer for motorcycle or motor vehicle has perforated tube concentrically accommodated inside outer tube buried in sound absorbing material held inside outer casing |
| 05/16/2001 | EP1099830A2 Dual cross-flow muffler |
| 05/16/2001 | EP1099829A2 Insert for silencer |
| 05/16/2001 | EP1099463A1 Air treatment plant with sound suppressing means |
| 05/16/2001 | EP1099045A1 Device and method for reducing the noise emissions of internal combustion engines and for diagnosing the same |
| 05/15/2001 | CA2061170C Field installable choke tube |
| 05/10/2001 | WO2001033049A1 Silencer |
| 05/08/2001 | CA2021871C Resonator |
| 05/03/2001 | DE19952428A1 Verfahren und Vorrichtung zur kombinierten katalytischen NOx-Reduktion und Schalldämpfung von Abgas im Abgasstrang einer Brennkraftmaschine Method and apparatus for combined catalytic NOx reduction and sound damping of exhaust gas in the exhaust system of an internal combustion engine |
| 05/02/2001 | EP1096116A2 Method and device for combined catalytic NOx reduction and sound attenuation of exhaust gas in the exhaust line of an internal combustion engine |
| 05/02/2001 | CN2428575Y Exhausting silencer |
| 05/01/2001 | US6224440 Watercraft exhaust system |
| 05/01/2001 | US6223434 Muffler and its manufacturing method |
| 04/26/2001 | DE19957711A1 Exhaust silencer valve arrangement for motor vehicles has valve opening controlled by valve without seat, and peripheral housing wall to define opening |
| 04/24/2001 | US6220907 Watercraft exhaust control |
| 04/24/2001 | US6220387 Exhaust muffler |
| 04/24/2001 | US6220021 Silencer with incorporated catalyst |
| 04/19/2001 | WO2001027445A2 A silencer |
| 04/19/2001 | DE19950104A1 Process for neutralizing exhaust gases and reducing exhaust noise from an internal combustion engine comprises self-ignition of preheated air and exhaust gases, gas expansion, resonant |
| 04/19/2001 | DE19949271A1 Sound absorber for the exhaust gas unit of a motor vehicle driven by an internal combustion engine comprises a component designed as a metallic hollow space structure |
| 04/19/2001 | DE19949241A1 Device for reducing sound conducted through air and solids caused by turbosuperchargers in internal combustion engines comprises tubes sliding into an outer jacket with a center flange to form a chamber |
| 04/19/2001 | DE19947938A1 Muffler for engine exhaust includes cylindrical closure element and channel section making up shut-off device and having openings and webs off-set to restrict or release flow path |
| 04/19/2001 | DE19923736C1 Exhaust system for automobile engine has funnel-shaped insert fitted into exhaust pipe section leading to catalyser |
| 04/18/2001 | CN1291563A Tail gas purifying silencer for motor-driven vehicles |
| 04/12/2001 | WO2001025604A1 Stratified scavenging two-cycle engine with catalyst |
| 04/12/2001 | WO2000043094A3 System for neutralising polluting gases by pyrolysis |
| 04/12/2001 | DE10048958A1 Anordnung zum Anbringen von schallabsorbierenden Lamellen eines Arbeitsfahrzeugs An arrangement for attaching the sound-absorbing plates of a work vehicle |
| 04/10/2001 | US6213827 Watercraft engine exhaust system |