GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F01Engines

F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES

F01N1/00Silencing apparatus characterised by method of silencing F01N11/00Monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N13/00Exhaust 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 F01N1/00 - F01N5/00, F01N9/00, F01N11/00 F01N2210/00Combination of methods of silencing F01N2230/00Combination of silencers and other devices F01N2240/00Combination 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 F01N2250/00Combinations of different methods of purification F01N2260/00Exhaust treating devices having provisions not otherwise provided for F01N2270/00Mixing air with exhaust gases F01N2290/00Movable parts or members in exhaust systems for other than for control purposes F01N2310/00Selection of sound absorbing or insulating material F01N2330/00Structure of catalyst support or particle filter F01N2340/00Dimensional characteristics of the exhaust system F01N2350/00Arrangements for fitting catalyst support or particle filter element in the housing F01N2370/00Selection of materials for exhaust purification F01N2390/00Arrangements for controlling or regulating exhaust apparatus F01N2410/00By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device F01N2430/00Influencing exhaust purification F01N2450/00Methods or apparatus for fitting, inserting or repairing different elements F01N2470/00Structure or shape of gas passages, pipes or tubes F01N2490/00Structure, disposition or shape of gas-chambers F01N2510/00Surface coverings F01N2530/00Selection of materials for tubes, chambers or housings F01N2550/00Monitoring or diagnosing the deterioration of exhaust systems F01N2560/00Exhaust systems with means for detecting or measuring exhaust gas components or characteristics F01N2570/00Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds F01N2590/00Exhaust or silencing apparatus adapted to particular use F01N2610/00Adding substances to exhaust gases F01N2900/00Details of electrical control or of the monitoring of the exhaust gas treating apparatus F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust F01N5/00Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy F01N9/00Electrical control of exhaust gas treating apparatus