GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)

Child Classifications

Navigate with arrow keys, Enter to open

• F01N 1/00 Silencing apparatus characterised by method of silencing +1 CPC IPC+CPC Available in IPC and CPC
• F01N 11/00 Monitoring or diagnostic devices for exhaust-gas treatment apparatus since 2000 +2 CPC IPC+CPC Available in IPC and CPC
• F01N 13/00 Exhaust or silencing apparatus characterised by constructional features since 2010 +7 CPC IPC+CPC Available in IPC and CPC
• F01N 2210/00 Combination of methods of silencing 2nd only +3 CPC CPC only CPC only
• F01N 2230/00 Combination of silencers and other devices 2nd only +4 CPC CPC only CPC only
• F01N 2240/00 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 F01N2230/00 or F01N2250/00, one of the devices being 2nd only +20 CPC CPC only CPC only
• F01N 2250/00 Combinations of different methods of purification 2nd only +7 CPC CPC only CPC only
• F01N 2260/00 Exhaust treating devices having provisions not otherwise provided for 2nd only +13 CPC CPC only CPC only
• F01N 2270/00 Mixing air with exhaust gases 2nd only +5 CPC CPC only CPC only
• F01N 2290/00 Movable parts or members in exhaust systems for other than for control purposes 2nd only +2 CPC CPC only CPC only
• F01N 2310/00 Selection of sound absorbing or insulating material 2nd only +7 CPC CPC only CPC only
• F01N 2330/00 Structure of catalyst support or particle filter 2nd only +11 CPC CPC only CPC only
• F01N 2340/00 Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the exhaust apparatus; Spatial arrangements of exhaust apparatuses 2nd only +4 CPC CPC only CPC only
• F01N 2350/00 Arrangements for fitting catalyst support or particle filter element in the housing 2nd only +2 CPC CPC only CPC only
• F01N 2370/00 Selection of materials for exhaust purification 2nd only +3 CPC CPC only CPC only
• F01N 2390/00 Arrangements for controlling or regulating exhaust apparatus 2nd only +4 CPC CPC only CPC only
• F01N 2410/00 By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device 2nd only +8 CPC CPC only CPC only
• F01N 2430/00 Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics 2nd only +5 CPC CPC only CPC only
• F01N 2450/00 Methods or apparatus for fitting, inserting or repairing different elements 2nd only +14 CPC CPC only CPC only
• F01N 2470/00 Structure or shape of exhaust gas passages, pipes or tubes 2nd only +14 CPC CPC only CPC only
• Show 13 more