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F01N 1/00
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Silencing apparatus characterised by method of silencing |
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F01N 1/02
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Silencing apparatus characterised by method of silencing by using resonance |
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F01N 1/04
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Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers |
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F01N 1/06
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Silencing apparatus characterised by method of silencing by using interference effect |
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F01N 1/08
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Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling |
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F01N 1/10
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Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials |
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F01N 1/12
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Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally- or helically-shaped channels |
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F01N 1/14
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Silencing apparatus characterised by method of silencing by adding air to exhaust gases |
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F01N 1/16
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Silencing apparatus characterised by method of silencing by using movable parts |
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F01N 1/18
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Silencing apparatus characterised by method of silencing by using movable parts having rotary movement |
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F01N 1/20
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Silencing apparatus characterised by method of silencing by using movable parts having oscillating or vibrating movement |
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F01N 1/22
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Silencing apparatus characterised by method of silencing by using movable parts the parts being resilient walls |
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F01N 1/24
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Silencing apparatus characterised by method of silencing by using sound-absorbing materials |
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F01N 3/00
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust |
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F01N 3/01
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators |
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F01N 3/02
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust |
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F01N 3/04
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids |
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F01N 3/05
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air |
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F01N 3/06
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks |
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F01N 3/08
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous |
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F01N 3/10
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust |
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F01N 3/18
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control |
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F01N 3/20
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion |
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F01N 3/021
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters |
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F01N 3/22
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Control of additional air supply only, e.g. using by-passes or variable air pump drives |
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F01N 3/023
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles |
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F01N 3/24
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus |
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F01N 3/025
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust |
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F01N 3/26
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Construction of thermal reactors |
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F01N 3/027
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating |
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F01N 3/28
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Construction of catalytic reactors |
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F01N 3/029
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust |
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F01N 3/30
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Arrangements for supply of additional air |
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F01N 3/031
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start |
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F01N 3/32
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Arrangements for supply of additional air using air pumps |
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F01N 3/033
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices |
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F01N 3/34
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Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port |
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F01N 3/035
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors |
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F01N 3/36
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Arrangements for supply of additional fuel |
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F01N 3/037
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Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of inertial or centrifugal separators, e.g. associated with agglomerators |
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F01N 3/38
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Arrangements for igniting |
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F01N 5/00
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Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy |
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F01N 5/02
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Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat |
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F01N 5/04
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Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy |
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F01N 9/00
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Electrical control of exhaust gas treating apparatus |
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F01N 11/00
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Monitoring or diagnostic devices for exhaust-gas treatment apparatus |
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F01N 13/00
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Exhaust or silencing apparatus characterised by constructional features |
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F01N 13/02
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Exhaust or silencing apparatus characterised by constructional features having two or more separate silencers in series |
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F01N 13/04
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Exhaust or silencing apparatus characterised by constructional features having two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines |
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F01N 13/06
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Exhaust or silencing apparatus characterised by constructional features specially adapted for star-arrangement of cylinders, e.g. exhaust manifolds |
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F01N 13/08
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Other arrangements or adaptations of exhaust conduits |
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F01N 13/10
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Other arrangements or adaptations of exhaust conduits of exhaust manifolds |
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F01N 13/12
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Exhaust or silencing apparatus characterised by constructional features specially adapted for submerged exhausting |
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F01N 13/14
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Exhaust or silencing apparatus characterised by constructional features having thermal insulation |
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F01N 13/16
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Selection of particular materials |
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F01N 13/18
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Construction facilitating manufacture, assembly or disassembly |
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F01N 13/20
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Exhaust or silencing apparatus characterised by constructional features having flared outlets, e.g. of fish-tail shape |
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F01N 99/00
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Subject matter not provided for in other groups of this subclass |
