F01N - CPC Classification
Classification description:
Sub-classes:
- F01N1/00 » Silencing apparatus characterised by method of silencing 131
- F01N11/00 » Monitoring or diagnostic devices for exhaust-gas treatment apparatus, {e.g. for catalytic activity } 1,5K
- F01N13/00 » Exhaust or silencing apparatus characterised by constructional features; {Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups to , , } 130
- F01N2210/00 » Combination of methods of silencing 1
- F01N2230/00 » Combination of silencers and other devices 19
- F01N2240/00 » Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes or , one of the devices being 8
- F01N2250/00 » Combinations of different methods of purification 4
- F01N2260/00 » Exhaust treating devices having provisions not otherwise provided for 27
- F01N2270/00 » Mixing air with exhaust gases 26
- F01N2290/00 » Movable parts or members in exhaust systems for other than for control purposes 20
- F01N2310/00 » Selection of sound absorbing or insulating material 35
- F01N2330/00 » Structure of catalyst support or particle filter 35
- F01N2340/00 » Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses 137
- F01N2350/00 » Arrangements for fitting catalyst support or particle filter element in the housing 30
- F01N2370/00 » Selection of materials for exhaust purification 38
- F01N2390/00 » Arrangements for controlling or regulating exhaust apparatus 65
- F01N2410/00 » By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device 252
- F01N2430/00 » Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics 142
- F01N2450/00 » Methods or apparatus for fitting, inserting or repairing different elements 57
- F01N2470/00 » Structure or shape of gas passages, pipes or tubes 78
- F01N2490/00 » Structure, disposition or shape of gas-chambers 29
- F01N2510/00 » Surface coverings 79
- F01N2530/00 » Selection of materials for tubes, chambers or housings 30
- F01N2550/00 » Monitoring or diagnosing the deterioration of exhaust systems 113
- F01N2560/00 » Exhaust systems with means for detecting or measuring exhaust gas components or characteristics 47
- F01N2570/00 » Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds 14
- F01N2590/00 » Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines 33
- F01N2610/00 » Adding substances to exhaust gases 120
- F01N2900/00 » Details of electrical control or of the monitoring of the exhaust gas treating apparatus 4
- F01N3/00 » Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust 145
- F01N5/00 » Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy 21
- F01N9/00 » Electrical control of exhaust gas treating apparatus 1,3K
