Skip over navigation
Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES(
{
evacuation of fumes from the area where they are produced B08B 15/00 ; arrangement of exhaust or silencing apparatus on percussive tools B25D 17/12
}
; arrangements in connection with gas exhaust of propulsion units in vehicles B60K 13/00 ,
{
on ships or other waterborne vessels B63H 21/32 , on aircraft B64D 33/04 ; arrangement of exhaust or silencing apparatus on firearms F41A 21/30 ; ground installations for reducing aircraft engine or jet noise B64F 1/26 ; silencers specially adapted for steam engines F01B 31/16 ; air-intake silencers for gas turbine or jet propulsion plants F02C 7/045 ; jet pipe or nozzles for jet propulsion plants F02K
}
; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M 35/00 ;
{
combating noise or silencing in positive displacement machines or pumps F04B 39/0027 , in rotary-piston machines or pumps F04C 29/06 , in non-positive displacement pumps F04D 29/66 ; means in valves for absorbing noise F16K 47/02 ; noise absorbers in pipe system F16L 55/02 ; conducting smoke or fumes from various locations to the outside F23J 11/00 ; means for preventing or suppressing noise in air-conditioning or ventilation systems F24F 13/24
}
; protecting against, or damping, noise in general G10K 11/16 )
NOTE
-

Attention is drawn to the notes preceding Class F01, especially as regards Note 2(b).

Collapse
Silencing apparatus characterised by method of silencing
{
by cooling F01N 3/02 ; using liquids F01N 3/04
}
Collapse
F01N 1/003
.
{
by using dead chambers communicating with gas flow passages( resonance chambers F01N 1/02 ; chambers containing sound-absorbing materials F01N 1/24 )
}
F01N 1/006
. .
{
comprising at least one perforated tube extending from inlet to outlet of the silencer
}
Collapse
F01N 1/02
.
by using resonance
F01N 1/023
. .
{
Helmholtz resonators
}
F01N 1/026
. .
{
Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
}
F01N 1/04
. .
having sound-absorbing materials in resonance chambers
Collapse
F01N 1/06
.
by using interference effect
F01N 1/065
. .
{
by using an active noise source, e.g. speakers
}
Collapse
F01N 1/08
.
by reducing exhaust energy by throttling or whirling
F01N 1/081
. .
{
by passing the gases through a mass of particles
}
F01N 1/082
. .
{
the gases passing through porous members( F01N 1/081 takes precedence )
}
F01N 1/083
. .
{
using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
}
F01N 1/084
. .
{
the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
}
F01N 1/085
. .
{
using a central core throttling gas passage
}
Collapse
F01N 1/086
. .
{
having means to impart whirling motion to the gases( with helically or spirally shaped channels F01N 1/12 )
}
F01N 1/087
. . .
{
using tangential inlets into a circular chamber
}
F01N 1/088
. . .
{
using vanes arranged on gas flow path or gas flow tubes with tangentially directed apertures
}
F01N 1/089
. .
{
using two or more expansion chambers in series( F01N 1/083 , F01N 1/084 , F01N 1/086 take precedence )
}
F01N 1/10
. .
in combination with sound-absorbing materials( F01N 1/125 takes precedence )
Collapse
F01N 1/12
. .
using spirally or helically shaped channels( cyclones B04C )
F01N 1/125
. . .
{
in combination with sound-absorbing materials
}
F01N 1/14
.
by adding air to exhaust gases
{
( in tailpipes F01N 13/082 , F01N 13/20 )
}
Collapse
F01N 1/16
.
by using movable parts
Collapse
F01N 1/161
. .
{
for adjusting resonance or dead chambers or passages to resonance or dead chambers
}
F01N 1/163
. . .
{
by means of valves
}
F01N 1/165
. .
{
for adjusting flow area
}
F01N 1/166
. .
{
for changing gas flow path through the silencer or for adjusting the dimensions of a chamber or a pipe( F01N 1/165 takes precedence )
}
F01N 1/168
. .
{
for controlling or modifying silencing characteristics only
}
F01N 1/18
. .
having rotary movement
F01N 1/20
. .
having oscillating or vibrating movement
{
the parts being resilient walls F01N 1/22
}
F01N 1/22
. .
the parts being resilient walls
F01N 1/24
.
by using sound-absorbing materials( F01N 1/04 , F01N 1/06 , F01N 1/10 , F01N 1/14 , F01N 1/16 take precedence )
Collapse
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust( electric control F01N 9/00 ; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N 11/00 ;
{
collecting or removing exhaust gases of vehicle engines in workshops B08B 15/00 , on highways E01C 1/005
}
)
F01N 3/005
.
{
for draining or otherwise eliminating condensates or moisture accumulating in the apparatus( F01N 3/02 takes precedence )
}
[c0809]
F01N 3/01
.
by means of electric or electrostatic separators
Collapse
F01N 3/02
.
for cooling, or for removing solid constituents of, exhaust( by means of electric or electrostatic separators F01N 3/01 ;
{
mixing air with exhaust in tailpipes F01N 13/082 , F01N 13/20
}
)
F01N 3/0205
. .
{
using heat exchangers
}
Collapse
F01N 3/021
. .
by means of filters
F01N 3/0211
. . .
{
Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
}
F01N 3/0212
. . .
{
with one or more perforated tubes surrounded by filtering material, e.g. filter candles
}
F01N 3/0214
. . .
{
with filters comprising movable parts, e.g. rotating filters
}
F01N 3/0215
. . .
{
the filtering elements having the form of disks or plates
}
F01N 3/0217
. . .
{
the filtering elements having the form of hollow cylindrical bodies
}
F01N 3/0218
. . .
{
the filtering elements being made from spirally-wound filtering material
}
Collapse
F01N 3/022
. . .
characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/0222
. . . .
{
the structure being monolithic, e.g. honeycombs
}
F01N 3/0224
. . . .
{
the structure being granular
}
F01N 3/0226
. . . .
{
the structure being fibrous
}
F01N 3/0228
. . . .
{
the structure being made of foamed rubber or plastics
}
Collapse
F01N 3/023
. . .
using means for regenerating the filters, e.g. by burning trapped particles( by electrically controlling the supply of combustible mixture or its constituents only F02D 41/0235 )
F01N 3/0231
. . . .
{
using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems (CRT)
}
F01N 3/0232
. . . .
{
removing incombustible material from a particle filter, e.g. ash
}
F01N 3/0233
. . . .
{
periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
}
F01N 3/0234
. . . .
{
using heat exchange means in the exhaust line
}
F01N 3/0235
. . . .
{
using exhaust gas throttling means
}
F01N 3/0236
. . . .
{
using turbine waste gate valve
}
F01N 3/0237
. . . .
{
for regenerating ex situ
}
F01N 3/0238
. . . .
{
for regenerating during engine standstill
}
Collapse
F01N 3/025
. . . .
using fuel burner or by adding fuel to exhaust
Collapse
F01N 3/0253
. . . . .
{
adding fuel to exhaust gases
}
F01N 3/0256
. . . . . .
{
the fuel being ignited by electrical means
}
Collapse
F01N 3/027
. . . .
using electric or magnetic heating means
F01N 3/0275
. . . . .
{
using electric discharge means
}
F01N 3/028
. . . . .
using microwaves
Collapse
F01N 3/029
. . . .
by adding non-fuel substances to exhaust
Collapse
F01N 3/0293
. . . . .
{
injecting substances in exhaust stream
}
F01N 3/0296
. . . . . .
{
having means for preheating additional substances
}
Collapse
F01N 3/031
. . .
having means for by-passing filters, e.g. when clogged or during cold engine start
F01N 3/032
. . . .
during filter regeneration only
Collapse
F01N 3/033
. . .
in combination with other devices
{
with adsorbents or absorbents F01N 3/0821
}
F01N 3/0335
. . . .
{
with exhaust silencers in a single housing
}
F01N 3/035
. . . .
with catalytic reactors,
{
e.g. catalysed diesel particulate filters
}
F01N 3/037
. .
by means of inertial or centrifugal separators, e.g. of cyclone type, optionally combined or associated with agglomerators
F01N 3/038
. .
by means of perforated plates defining expansion chambers associated with condensation and collection chambers, e.g. for adiabatic expansion of gases and subsequent collection of condensed liquids
Collapse
F01N 3/04
. .
using liquids
Collapse
F01N 3/043
. . .
{
without contact between liquid and exhaust gases
}
F01N 3/046
. . . .
{
Exhaust manifolds with cooling jacket
}
Collapse
F01N 3/05
. .
by means of air, e.g. by mixing exhaust with air( silencers working by addition of air to exhaust F01N 1/14 ; arrangements for the supply of additional air for the thermal or catalytic conversion of noxious components of exhaust F01N 3/30 ;
{
in tailpipes F01N 13/082
}
)
F01N 3/055
. . .
{
without contact between air and exhaust gases
}
F01N 3/06
.
for extinguishing sparks
Collapse
F01N 3/08
.
for rendering innocuous( using electric or electrostatic separators F01N 3/01 ; chemical aspects B01D 53/92 )
Collapse
F01N 3/0807
. .
{
by using absorbents or adsorbents
}
F01N 3/0814
. . .
{
combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
}
F01N 3/0821
. . .
{
combined with particulate filters( catalysed diesel particulate filters F01N 3/035 )
}
Collapse
F01N 3/0828
. . .
{
characterised by the absorbed or adsorbed substances
}
F01N 3/0835
. . . .
{
Hydrocarbons
}
F01N 3/0842
. . . .
{
Nitrogen oxides
}
F01N 3/085
. . . .
{
Sulfur or sulfur oxides
}
F01N 3/0857
. . . .
{
Carbon oxides
}
F01N 3/0864
. . . .
{
Oxygen
}
Collapse
F01N 3/0871
. . .
{
Regulation of absorbents or adsorbents, e.g. purging( by electrically controlling the supply of combustible mixture or its constituents only F02D 41/0235 )
}
F01N 3/0878
. . . .
{
Bypassing absorbents or adsorbents
}
F01N 3/0885
. . . .
{
Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
}
F01N 3/0892
. .
{
Electric or magnetic treatment, e.g. dissociation of noxious components( electric filters F01N 3/01 ; regeneration of exhaust filters F01N 3/023 ; heating catalytic converters F01N 3/2006 )
}
Collapse
F01N 3/10
. .
by thermal or catalytic conversion of noxious components of exhaust( by using other chemical processes, chemical aspects of catalytic conversion, e.g. using specified catalysts, B01D 53/34 )
F01N 3/101
. . .
{
Three-way catalysts
}
F01N 3/103
. . .
{
Oxidation catalysts for HC and CO only
}
Collapse
F01N 3/105
. . .
{
General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
}
F01N 3/106
. . . .
{
Auxiliary oxidation catalysts
}
F01N 3/108
. . . .
{
Auxiliary reduction catalysts
}
Collapse
F01N 3/18
. . .
characterised by methods of operation ; Regulation
Collapse
F01N 3/20
. . . .
specially adapted for catalytic conversion;
{
Methods of operation or regulation of catalytic converters
}
( F01N 3/22 takes precedence )
Collapse
F01N 3/2006
. . . . .
{
Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating( by electrically controlling the supply of combustible mixture or its constituents only F02D 41/0235 )
}
Collapse
F01N 3/2013
. . . . . .
{
using electric or magnetic heating means
}
F01N 3/202
. . . . . . .
{
using microwaves
}
F01N 3/2026
. . . . . . .
{
directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
}
F01N 3/2033
. . . . . .
{
using a fuel burner or introducing fuel into exhaust duct
}
F01N 3/204
. . . . . .
{
using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct
}
F01N 3/2046
. . . . . .
{
Periodically cooling catalytic reactors
}
F01N 3/2053
. . . . .
{
By-passing catalytic reactors, e.g. to prevent overheating
}
F01N 3/206
. . . . .
{
Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents( F01N 3/2066 takes precedence )
}
Collapse
F01N 3/2066
. . . . .
{
Selective catalytic reduction (SCR)
}
F01N 3/2073
. . . . . .
{
with means for generating a reducing substance from the exhaust gases
}
F01N 3/208
. . . . . .
{
Control of selective catalytic reduction (SCR), e.g. dosing of reducing agent
}
F01N 3/2086
. . . . .
{
Activating the catalyst by light, photo-catalysts
}
F01N 3/2093
. . . . .
{
Periodically blowing a gas through the converter, e.g. in a direction opposite to exhaust gas flow or by reversing exhaust gas flow direction
}
Collapse
F01N 3/22
. . . .
Regulation of additional air supply only, e.g. using by-passes or variable air pump drives
F01N 3/222
. . . . .
{
using electric valves only
}
F01N 3/225
. . . . .
{
Electric control of additional air supply
}
F01N 3/227
. . . . .
{
using pneumatically operated valves, e.g. membrane valves
}
Collapse
F01N 3/24
. . .
characterised by constructional aspects of converting apparatus( filtering in combination with catalytic reactors F01N 3/035 )
F01N 3/26
. . . .
Construction of thermal reactors
Collapse
F01N 3/28
. . . .
Construction of catalytic reactors
Collapse
F01N 3/2803
. . . . .
{
characterised by structure, by material or by manufacturing of catalyst support
}
Collapse
F01N 3/2807
. . . . . .
{
Metal other than sintered metal( F01N 3/2832 and F01N 3/2835 take precedence )
}
Collapse
F01N 3/281
. . . . . . .
{
Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
}
F01N 3/2814
. . . . . . . .
{
all sheets, plates or foils being corrugated
}
F01N 3/2817
. . . . . . . .
{
only with non-corrugated sheets, plates or foils
}
F01N 3/2821
. . . . . . . .
{
the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence
}
Collapse
F01N 3/2825
. . . . . .
{
Ceramics( F01N 3/2832 , F01N 3/2835 take precedence )
}
F01N 3/2828
. . . . . . .
{
Ceramic multi-channel monoliths, e.g. honeycombs
}
F01N 3/2832
. . . . . .
{
granular, e.g. pellets
}
F01N 3/2835
. . . . . .
{
fibrous
}
Collapse
F01N 3/2839
. . . . .
{
Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
}
F01N 3/2842
. . . . . .
{
specially adapted for monolithic supports, e.g. of honeycomb type( F01N 3/2853 to F01N 3/2871 take precedence )
}
F01N 3/2846
. . . . . .
{
specially adapted for granular supports, e.g. pellets
}
F01N 3/285
. . . . . .
{
specially adapted for fibrous supports, e.g. held in place by screens
}
Collapse
F01N 3/2853
. . . . . .
{
using mats or gaskets between catalyst body or housing
}
F01N 3/2857
. . . . . . .
{
the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite
}
F01N 3/286
. . . . . . .
{
the mats or gaskets having corrugations or cavities
}
F01N 3/2864
. . . . . . .
{
the mats or gaskets comprising two or more insulation layers
}
F01N 3/2867
. . . . . . .
{
the mats or gaskets being placed at the front or end face of catalyst body
}
F01N 3/2871
. . . . . . .
{
the mats or gaskets having an additional, e.g. non-insulating or non-cushioning layer, a metal foil or an adhesive layer
}
F01N 3/2875
. . . . . .
{
by using elastic means, e.g. spring leaves, for retaining catalyst body in the housing( F01N 3/2853 to F01N 3/2871 take precedence )
}
F01N 3/2878
. . . . . .
{
by using non-elastic means for retaining catalyst body in the housing, e.g. a metal chamfer, or by corrugation or deformation of the metal housing
}
Collapse
F01N 3/2882
. . . . .
{
Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices( combined with absorbents or adsorbents only F01N 3/0814 ; combined with particulate filters F01N 3/035 )
}
F01N 3/2885
. . . . . .
{
with exhaust silencers in a single housing
}
F01N 3/2889
. . . . . .
{
with heat exchangers in a single housing
}
F01N 3/2892
. . . . .
{
Exhaust flow directors or the like, e.g. upstream of catalytic device
}
F01N 3/2896
. . . . .
{
Liquid catalyst carrier
}
Collapse
F01N 3/30
. . . .
Arrangements for supply of additional air( regulation, e.g. using air by-passes or variable air pump drives F01N 3/22 )
F01N 3/303
. . . . .
{
Filtering additional air
}
F01N 3/306
. . . . .
{
Preheating additional air
}
Collapse
F01N 3/32
. . . . .
using air pump( using jet air pumps F01N 3/34 ; pumps in general F04 )
F01N 3/323
. . . . . .
{
Electrically driven air pumps
}
F01N 3/326
. . . . . .
{
Engine-driven air pumps
}
F01N 3/34
. . . . .
using air conduits or jet air pumps, e.g. near the engine exhaust port
F01N 3/36
. . . .
Arrangements for supply of additional fuel
F01N 3/38
. . . .
Arrangements for igniting
Collapse
Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy( predominant aspects of such devices, see the relevant classes for the devices; using kinetic or wave energy of exhaust gases in exhaust systems for charging F02B )
Collapse
F01N 5/02
.
the devices using heat
F01N 5/025
. .
{
the device being thermoelectric generators
}
F01N 5/04
.
the devices using kinetic energy
Collapse
Electrical control of exhaust gas treating apparatus( monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N 11/00 ;
{
electrical control of supply of combustible mixture or its constituents in relation with the state of the exhaust gas treating apparatus F02D 41/0235
}
; controlling combustion engines conjoint electrical control of two or more combustion engine functions F02D 43/00 )
F01N 9/002
.
{
of filter regeneration, e.g. detection of clogging
}
F01N 9/005
.
{
using models instead of sensors to determine operating characteristics of exhaust systems, e.g. calculating catalyst temperature instead of measuring it directly
}
F01N 9/007
.
{
Storing data relevant to operation of exhaust systems for later retrieval and analysis, e.g. to research exhaust system malfunctions
}
Collapse
Monitoring or diagnostic devices for exhaust-gas treatment apparatus,
{
e.g. for catalytic activity( safety, indicating or supervising devices for internal combustion engines F02B 77/08 ; testing of machines G01M 13/00 )
}
Collapse
F01N 11/002
.
{
the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
}
F01N 11/005
. .
{
the temperature or pressure being estimated, e.g. by means of a theoretical model
}
F01N 11/007
.
{
the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
}
Collapse
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 F01N 1/00 to F01N 5/00 , F01N 9/00 , F01N 11/00
}
F01N 13/001
.
{
Gas flow channels or gas chambers being at least partly formed in the structural parts of the engine or machine( using structural parts of the vehicle B60K 13/06 )
}
F01N 13/002
.
{
Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
}
Collapse
F01N 13/004
.
{
specially adapted for marine propulsion, i.e. for receiving simultaneously engine exhaust gases and engine cooling water( for submerged exhausting F01N 13/12 ; treating exhaust by using liquids F01N 3/04 )
}
F01N 13/005
. .
{
with parts constructed of non-metallic material, e.g. of rubber
}
F01N 13/007
.
{
Apparatus used as intake or exhaust silencer( silencing methods F01N 1/00 ; intake silencers F02M 35/12 )
}
F01N 13/008
.
{
Mounting or arrangement of exhaust sensors in or on exhaust apparatus( sensor arrangements for engine control F02D 41/1439 )
}
Collapse
F01N 13/009
.
{
having two or more separate purifying devices arranged in series
}
F01N 13/0093
. .
{
the purifying devices are of the same type
}
F01N 13/0097
. .
{
the purifying devices are arranged in a single housing
}
Collapse
F01N 13/011
.
{
having two or more purifying devices arranged in parallel
}
F01N 13/017
. .
{
the purifying devices are arranged in a single housing
}
F01N 13/02
.
having two or more separate silencers in series
F01N 13/04
.
having two or more silencers in parallel e.g. having interconnections for multi-cylinder engines
F01N 13/06
.
specially adapted for star-arrangement of cylinders, e.g. exhaust manifolds
Collapse
F01N 13/08
.
Other arrangements or adaptations of exhaust conduits(
{
pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B 15/00 , on highways E01C 1/005
}
)
F01N 13/082
. .
{
of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation( F01N 13/20 takes precedence )
}
F01N 13/085
. .
{
having means preventing foreign matter from entering exhaust conduit
}
F01N 13/087
. .
{
having valves upstream of silencing apparatus for by-passing at least part of exhaust directly to atmosphere( valves for changing gas flow path through the silencer F01N 1/166 )
}
Collapse
F01N 13/10
. .
of exhaust manifolds
{
( with cooling jacket F01N 3/046 )
}
F01N 13/102
. . .
{
having thermal insulation
}
F01N 13/105
. . .
{
having the form of a chamber directly connected to the cylinder head, e.g. without having tubes connected between cylinder head and chamber
}
F01N 13/107
. . .
{
More than one exhaust manifold or exhaust collector
}
F01N 13/12
.
specially adapted for submerged exhausting
Collapse
F01N 13/14
.
having thermal insulation
{
( exhaust manifolds F01N 13/102 )
}
Collapse
F01N 13/141
. .
{
Double-walled exhaust pipes or housings
}
F01N 13/143
. . .
{
with air filling the space between both walls
}
F01N 13/145
. . .
{
with gas other than air filling the space between both walls
}
F01N 13/146
. . .
{
with vacuum in the space between both walls
}
F01N 13/148
. .
{
Multiple layers of insulating material
}
F01N 13/16
.
Selection of particular materials
Collapse
F01N 13/18
.
Construction facilitating manufacture, assembly, or disassembly
Collapse
F01N 13/1805
. .
{
Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body( pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K )
}
Collapse
F01N 13/1811
. . .
{
with means permitting relative movement, e.g. compensation of thermal expansion or vibration
}
F01N 13/1816
. . . .
{
the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
}
F01N 13/1822
. . . .
{
for fixing exhaust pipes or devices to vehicle body
}
F01N 13/1827
. . .
{
Sealings specially adapted for exhaust systems( sealings in general F16J 15/00 )
}
F01N 13/1833
. .
{
specially adapted for small internal combustion engines, e.g. used in model applications
}
Collapse
F01N 13/1838
. .
{
characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
}
Collapse
F01N 13/1844
. . .
{
Mechanical joints
}
F01N 13/185
. . . .
{
the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
}
F01N 13/1855
. . . .
{
the connection being realised by using bolts, screws, rivets or the like
}
Collapse
F01N 13/1861
. .
{
the assembly using parts formed by casting or moulding
}
F01N 13/1866
. . .
{
the channels or tubes thereof being made integrally with the housing
}
Collapse
F01N 13/1872
. .
{
the assembly using stamp-formed parts or otherwise deformed sheet-metal
}
F01N 13/1877
. . .
{
the channels or tubes thereof being made integrally with the housing
}
F01N 13/1883
. .
{
manufactured by hydroforming
}
Collapse
F01N 13/1888
. .
{
the housing of the assembly consisting of two or more parts, e.g. two half-shells
}
F01N 13/1894
. . .
{
the parts being assembled in longitudinal direction
}
F01N 13/20
.
having flared outlets, e.g. of fish-tail shape
Collapse
F01N 2210/00
Combination of methods of silencing
F01N 2210/02
.
Resonance and interference
F01N 2210/04
.
Throttling-expansion and resonance
F01N 2210/06
.
Throttling-expansion and interference
Collapse
F01N 2230/00
Combination of silencers and other devices
F01N 2230/02
.
Exhaust filters
F01N 2230/04
.
Catalytic converters
F01N 2230/06
.
Spark arresters
F01N 2230/08
.
Thermal reactors
Collapse
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 F01N 2230/00 or F01N 2250/00 , one of the devices being
F01N 2240/02
.
a heat exchanger
F01N 2240/04
.
an electric, e.g. electrostatic, device other than a heater
F01N 2240/05
.
a magnetic, e.g. electromagnetic, device other than a valve
F01N 2240/06
.
an inertial, e.g. centrifugal, device
F01N 2240/10
.
a heat accumulator
F01N 2240/12
.
a thermal reactor
F01N 2240/14
.
a fuel burner
F01N 2240/16
.
an electric heater, i.e. a resistance heater
F01N 2240/18
.
an adsorber or absorber
F01N 2240/20
.
a flow director or deflector
F01N 2240/22
.
a condensation chamber
F01N 2240/25
.
an ammonia generator
F01N 2240/26
.
an exhaust gas reservoir, e.g. emission buffer
F01N 2240/28
.
a plasma reactor
F01N 2240/30
.
a fuel reformer
F01N 2240/32
.
a fuel cell
F01N 2240/34
.
an electrolyser
F01N 2240/36
.
an exhaust flap
F01N 2240/38
.
an ozone (O3) generator, e.g. for adding ozone after generation of ozone from air
F01N 2240/40
.
a hydrolysis catalyst
Collapse
F01N 2250/00
Combinations of different methods of purification
F01N 2250/02
.
filtering and catalytic conversion
F01N 2250/04
.
afterburning and catalytic conversion
F01N 2250/06
.
afterburning and filtering
F01N 2250/08
.
filtering and inertial particulate separation
F01N 2250/10
.
cooling and filtering
F01N 2250/12
.
absorption or adsorption, and catalytic conversion
F01N 2250/14
.
absorption or adsorption, and filtering
Collapse
F01N 2260/00
Exhaust treating devices having provisions not otherwise provided for
Collapse
F01N 2260/02
.
for cooling the device
F01N 2260/022
. .
using air
F01N 2260/024
. .
using a liquid
F01N 2260/04
.
for regeneration or reactivation, e.g. of catalyst
F01N 2260/06
.
for improving exhaust evacuation or circulation, or reducing back-pressure
F01N 2260/08
.
for preventing heat loss or temperature drop, using other means than layers of heat-insulating material
F01N 2260/10
.
for avoiding stress caused by expansions or contractions due to temperature variations
F01N 2260/12
.
for resisting high pressure
F01N 2260/14
.
for modifying or adapting flow area or back-pressure
F01N 2260/16
.
for reducing exhaust flow pulsations
F01N 2260/18
.
for improving rigidity, e.g. by wings, ribs
F01N 2260/20
.
for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device
F01N 2260/22
.
for preventing theft of exhaust parts or devices, e.g. anti-theft arrangements
F01N 2260/24
.
for identifying exhaust parts or devices, e.g. by labels, stickers or directly printing
F01N 2260/26
.
for preventing enter of dirt into the device
Collapse
F01N 2270/00
Mixing air with exhaust gases
F01N 2270/02
.
for cooling exhaust gases or the apparatus
F01N 2270/04
.
for afterburning
F01N 2270/06
.
for silencing
F01N 2270/08
.
for evacuation of exhaust gases, e.g. in tail-pipes
F01N 2270/10
.
for rendering exhaust innocuous, e.g. by dilution
Collapse
F01N 2290/00
Movable parts or members in exhaust systems for other than for control purposes
Collapse
F01N 2290/02
.
with continuous rotary movement
F01N 2290/04
. .
driven by exhaust gases
F01N 2290/06
. .
driven by auxiliary drive
Collapse
F01N 2290/08
.
with oscillating or vibrating movement
F01N 2290/10
. .
actuated by pressure of exhaust gases, e.g. exhaust pulses
Collapse
F01N 2310/00
Selection of sound absorbing or insulating material
F01N 2310/02
.
Mineral wool, e.g. glass wool, rock wool, asbestos or the like
F01N 2310/04
.
Metallic wool, e.g. steel wool, copper wool or the like
F01N 2310/06
.
Porous ceramics
F01N 2310/08
.
Exfoliated vermiculite, e.g. zonolite, coke, pumice
F01N 2310/10
.
Plastic foam
F01N 2310/12
.
Granular material
F01N 2310/14
.
Wire mesh fabric, woven glass cloth or the like
Collapse
F01N 2330/00
Structure of catalyst support or particle filter
Collapse
F01N 2330/02
.
Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
F01N 2330/04
. .
Methods of manufacturing
F01N 2330/06
.
Ceramic, e.g. monoliths
F01N 2330/08
.
Granular material
Collapse
F01N 2330/10
.
Fibrous material, e.g. mineral or metallic wool
Collapse
F01N 2330/101
. .
using binders, e.g. to form a permeable mat, paper or the like
F01N 2330/102
. . .
fibrous material being fiber reinforced polymer made of plastic matrix reinforced by fine glass or in the form of a loose mass of filaments or fibers
F01N 2330/12
.
Metallic wire mesh fabric or knitting
F01N 2330/14
.
Sintered material
F01N 2330/18
.
Composite material
F01N 2330/20
.
Plastics, e.g. polymers, polyester, polyurethane
F01N 2330/22
.
Metal foam
Collapse
F01N 2330/30
.
Honeycomb supports characterised by their structural details
Collapse
F01N 2330/32
. .
characterised by the shape, form or number of corrugations of plates, sheets or foils
F01N 2330/321
. . .
with two or more different kinds of corrugations in the same substrate
F01N 2330/322
. . .
Corrugations of trapezoidal form
F01N 2330/323
. . .
Corrugations of saw-tooth or triangular form
F01N 2330/324
. . .
Corrugations of rectangular form
F01N 2330/325
. . .
Corrugations of omega form
F01N 2330/34
. .
with flow channels of polygonal cross section
F01N 2330/36
. .
with flow channels formed by tubes
F01N 2330/38
. .
flow channels with means to enhance flow mixing,( e.g. protrusions or projections )
F01N 2330/40
. .
made of a single sheet, foil or plate
F01N 2330/42
. .
made of three or more different sheets, foils or plates stacked one on the other
F01N 2330/44
. .
made of stacks of sheets, plates or foils that are folded in S-form
F01N 2330/48
. .
characterised by the number of flow passages, e.g. cell density
F01N 2330/60
.
Discontinuous, uneven properties of filter material, e.g. different material thickness along the longitudinal direction ; Higher filter capacity upstream than downstream in same housing
Collapse
F01N 2340/00
Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus ; Spatial arrangements of exhaust apparatuses
F01N 2340/02
.
characterised by the distance of the apparatus to the engine, or the distance between two exhaust treating apparatuses
F01N 2340/04
.
characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
F01N 2340/06
.
characterised by the arrangement of the exhaust apparatus relative to the turbine of a turbocharger
Collapse
F01N 2350/00
Arrangements for fitting catalyst support or particle filter element in the housing
Collapse
F01N 2350/02
.
Fitting ceramic monoliths in a metallic housing
F01N 2350/04
. .
with means compensating thermal expansion
F01N 2350/06
. .
with means preventing gas flow by-pass or leakage
F01N 2350/08
.
with means for compressing granular material
Collapse
F01N 2370/00
Selection of materials for exhaust purification
Collapse
F01N 2370/02
.
used in catalytic reactors
F01N 2370/04
. .
Zeolitic material
Collapse
F01N 2370/22
.
used in non-catalytic purification apparatus
F01N 2370/24
. .
Zeolitic material
F01N 2370/30
. .
Materials having magnetic properties
F01N 2370/40
.
Activated carbon or charcoal
Collapse
F01N 2390/00
Arrangements for controlling or regulating exhaust apparatus
F01N 2390/02
.
using electric components only
F01N 2390/04
.
using electropneumatic components
F01N 2390/06
.
using pneumatic components only
F01N 2390/08
.
using mechanical components only, e.g. actuated manually
Collapse
F01N 2410/00
By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
F01N 2410/02
.
in case of high temperature, e.g. overheating of catalytic reactor
F01N 2410/03
.
in case of low temperature
F01N 2410/04
.
during regeneration period, e.g. of particle filter
F01N 2410/06
.
at cold starting
F01N 2410/08
.
in case of clogging, e.g. of particle filter
F01N 2410/10
.
for reducing flow resistance, e.g. to obtain more engine power
F01N 2410/12
.
in case of absorption, adsorption or desorption of exhaust gas constituents
F01N 2410/14
.
in case of excessive pressure, e.g. using a safety valve
Collapse
F01N 2430/00
Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
F01N 2430/02
.
by cutting out a part of engine cylinders
F01N 2430/04
.
by adding non-fuel substances to combustion air or fuel, e.g. additives
F01N 2430/06
.
by varying fuel-air ratio, e.g. by enriching fuel-air mixture
Collapse
F01N 2430/08
.
by modifying ignition or injection timing
F01N 2430/085
. .
at least a part of the injection taking place during expansion or exhaust stroke
F01N 2430/10
.
by modifying inlet or exhaust valve timing
Collapse
F01N 2450/00
Methods or apparatus for fitting, inserting or repairing different elements
F01N 2450/02
.
Fitting monolithic blocks into the housing
F01N 2450/04
.
Filling or emptying a chamber with granular material
F01N 2450/06
.
Inserting sound absorbing material into a chamber
F01N 2450/08
.
Repairing the housing or pipe-joints
F01N 2450/10
.
Fitting temporarily exhaust apparatus on exhaust conduit, e.g. in confined environment, garage or the like
F01N 2450/16
.
by using threaded joints
F01N 2450/18
.
by using quick-active type locking mechanisms, e.g. clips
F01N 2450/20
.
by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
F01N 2450/22
.
by welding or brazing
F01N 2450/24
.
by bolts, screws, rivets or the like
F01N 2450/26
.
by bayonet fittings
F01N 2450/28
.
by using adhesive material, e.g. cement
F01N 2450/30
.
Removable or rechangeable blocks or cartridges, e.g. for filters
F01N 2450/40
.
Retrofitting exhaust apparatus
Collapse
F01N 2470/00
Structure or shape of gas passages, pipes or tubes
Collapse
F01N 2470/02
.
Tubes being perforated
F01N 2470/04
. .
characterised by shape, disposition or dimensions of apertures
F01N 2470/06
.
Tubes being formed by assembly of stamped or otherwise deformed sheet-metal
F01N 2470/08
.
Gas passages being formed between the walls of an outer shell and an inner chamber
F01N 2470/10
.
Tubes having non-circular cross section
F01N 2470/12
.
Tubes being corrugated
F01N 2470/14
.
Plurality of outlet tubes, e.g. in parallel or with different length
F01N 2470/16
.
Plurality of inlet tubes, e.g. discharging into different chambers
F01N 2470/18
.
the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
F01N 2470/20
.
Dimensional characteristics of tubes, e.g. length, diameter
F01N 2470/22
.
Inlet and outlet tubes being positioned on the same side of the apparatus
F01N 2470/24
.
Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
F01N 2470/26
.
Tubes being formed by extrusion, drawing or rolling
F01N 2470/28
.
Tubes being formed by moulding or casting x
F01N 2470/30
.
Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
Collapse
F01N 2490/00
Structure, disposition or shape of gas-chambers
Collapse
F01N 2490/02
.
Two or more expansion chambers in series connected by means of tubes
F01N 2490/04
. .
the gases flowing longitudinally from inlet to outlet only in one direction
F01N 2490/06
. .
the gases flowing longitudinally from inlet to outlet in opposite directions
F01N 2490/08
.
Two or more expansion chambers in series separated by apertured walls only
F01N 2490/10
.
Two or more expansion chambers in parallel
F01N 2490/12
.
Chambers having variable volumes
F01N 2490/14
.
Dead or resonance chambers connected to gas flow tube by relatively short side-tubes
Collapse
F01N 2490/15
.
Plurality of resonance or dead chambers
F01N 2490/155
. .
being disposed one after the other in flow direction
F01N 2490/16
.
Chambers with particular shapes, e.g. spherical
F01N 2490/18
.
Dimensional characteristics of gas chambers
F01N 2490/20
.
Chambers being formed inside the exhaust pipe without enlargement of the cross section of the pipe, e.g. resonance chambers
Collapse
F01N 2510/00
Surface coverings
F01N 2510/02
.
for thermal insulation
F01N 2510/04
.
for sound absorption
Collapse
F01N 2510/06
.
for exhaust purification, e.g. catalytic reaction
F01N 2510/061
. .
usable with leaded fuels
F01N 2510/063
. .
zeolites
F01N 2510/065
. .
for reducing soot ignition temperature
F01N 2510/067
. .
usable with sulfurised fuels
Collapse
F01N 2510/068
. .
characterised by the distribution of the catalytic coatings
F01N 2510/0682
. . .
having a discontinuous, uneven or partially overlapping coating of catalytic material, e.g. higher amount of material upstream than downstream or vice-versa
F01N 2510/0684
. . .
having more than one coating layer, e.g. multi-layered coatings
F01N 2510/08
.
for corrosion prevention
F01N 2510/10
.
for preventing carbon deposits, e.g. chromium
F01N 2510/12
.
for smell removal
F01N 2510/14
.
for dehydrating
Collapse
F01N 2530/00
Selection of materials for tubes, chambers or housings
Collapse
F01N 2530/02
.
Corrosion resistive metals
F01N 2530/04
. .
Steel alloys, e.g. stainless steel
F01N 2530/06
.
Aluminium or alloys thereof
Collapse
F01N 2530/18
.
Plastics material, e.g. polyester resin
F01N 2530/20
. .
reinforced with mineral or metallic fibres
F01N 2530/22
.
Flexible elastomeric material
F01N 2530/24
.
Sintered porous material, e.g. bronze, aluminium or the like
F01N 2530/26
.
Multi-layered walls
Collapse
F01N 2550/00
Monitoring or diagnosing the deterioration of exhaust systems
F01N 2550/02
.
Catalytic activity of catalytic converters
F01N 2550/03
.
of sorbing activity of adsorbents or absorbents
F01N 2550/04
.
Filtering activity of particulate filters
F01N 2550/05
.
Systems for adding substances into exhaust
Collapse
F01N 2550/06
.
By-pass systems
F01N 2550/10
. .
of catalytic converters
F01N 2550/12
. .
of particulate filters
F01N 2550/14
.
Systems for adding secondary air into exhaust
F01N 2550/20
.
Monitoring artificially aged exhaust systems
F01N 2550/22
.
of electric heaters for exhaust systems or their power supply
F01N 2550/24
.
Determining the presence or absence of an exhaust treating device
Collapse
F01N 2560/00
Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
Collapse
F01N 2560/02
.
the means being an exhaust gas sensor
F01N 2560/021
. .
for measuring or detecting ammonia NH3
F01N 2560/022
. .
for measuring or detecting CO or CO2
F01N 2560/023
. .
for measuring or detecting HC
F01N 2560/024
. .
for measuring or detecting hydrogen H2
F01N 2560/025
. .
for measuring or detecting O2, e.g. lambda sensors
F01N 2560/026
. .
for measuring or detecting NOx
F01N 2560/027
. .
for measuring or detecting SOx
F01N 2560/028
. .
for measuring or detecting humidity or water
F01N 2560/05
.
the means being a particulate sensor
F01N 2560/06
.
the means being a temperature sensor
F01N 2560/07
.
the means being an exhaust gas flow rate or velocity meter or sensor, intake flow meters only when exclusively used to determine exhaust gas parameters
F01N 2560/08
.
the means being a pressure sensor
F01N 2560/12
.
Other sensor principles, e.g. using electro conductivity of substrate or radio frequency
F01N 2560/14
.
having more than one sensor of one kind
F01N 2560/20
.
Sensor having heating means
Collapse
F01N 2570/00
Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
F01N 2570/02
.
Lead
F01N 2570/04
.
Sulfur or sulfur oxides
F01N 2570/06
.
Zinc
F01N 2570/08
.
Phosphorus
F01N 2570/10
.
Carbon or carbon oxides
F01N 2570/12
.
Hydrocarbons
Collapse
F01N 2570/14
.
Nitrogen oxides
F01N 2570/145
. .
Dinitrogen oxide
F01N 2570/16
.
Oxygen
F01N 2570/18
.
Ammonia
F01N 2570/20
.
Formaldehyde
F01N 2570/22
.
Water or humidity
F01N 2570/24
.
Hydrogen sulfide (H2S)
Collapse
F01N 2590/00
Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
Collapse
F01N 2590/02
.
for marine vessels or naval applications
F01N 2590/021
. .
for outboard engines
F01N 2590/022
. .
for jetskis
F01N 2590/04
.
for motorcycles
F01N 2590/06
.
for hand-held tools or portables devices
F01N 2590/08
.
for heavy duty applications, e.g. trucks, buses, tractors, locomotives
F01N 2590/10
.
for stationary applications
F01N 2590/11
.
for hybrid vehicles
Collapse
F01N 2610/00
Adding substances to exhaust gases
F01N 2610/01
.
the substance being catalytic material in liquid form
F01N 2610/02
.
the substance being ammonia or urea
F01N 2610/03
.
the substance being hydrocarbons, e.g. engine fuel
F01N 2610/04
.
the substance being hydrogen
F01N 2610/05
.
the substance being carbon monoxide
F01N 2610/06
.
the substance being in the gaseous form
Collapse
F01N 2610/08
.
with prior mixing of the substances with a gas, e.g. air
F01N 2610/085
. .
Controlling the air supply
Collapse
F01N 2610/10
.
the substance being heated, e.g. by heating tank or supply line of the added substance
F01N 2610/102
. .
after addition to exhaust gases, e.g. by a passively or actively heated surface in the exhaust conduit
F01N 2610/105
. .
Control thereof
F01N 2610/107
. .
using glow plug heating elements
F01N 2610/11
.
the substance or part of the dosing system being cooled
F01N 2610/12
.
the substance being in solid form, e.g. pellets or powder
Collapse
F01N 2610/14
.
Arrangements for the supply of substances, e.g. conduits
Collapse
F01N 2610/1406
. .
Storage means for substances, e.g. tanks or reservoirs
F01N 2610/1413
. . .
Inlet and filling arrangements therefore
F01N 2610/142
. . .
Controlling the filling of the tank
F01N 2610/1426
. .
Filtration means
Collapse
F01N 2610/1433
. .
Pumps
F01N 2610/144
. . .
Control thereof
F01N 2610/1446
. .
Means for damping of pressure fluctuations in the delivery system, e.g. by puffer volumes or throttling
Collapse
F01N 2610/1453
. .
Sprayers or atomisers ; Arrangement thereof in the exhaust apparatus
F01N 2610/146
. . .
Control thereof, e.g. control of injectors or injection valves
F01N 2610/1466
. .
Means for venting air out of conduits or tanks
F01N 2610/1473
. .
Overflow or return means for the substances, e.g. conduits or valves for the return path
F01N 2610/148
. .
Arrangement of sensors
F01N 2610/1486
. .
Means to prevent the substance from freezing
F01N 2610/1493
. .
Means for prevention of clogging, e.g. purging
Collapse
F01N 2900/00
Details of electrical control or of the monitoring of the exhaust gas treating apparatus
Collapse
F01N 2900/04
.
Methods of control or diagnosing
F01N 2900/0402
. .
using adaptive learning
F01N 2900/0404
. .
using a data filter
F01N 2900/0406
. .
using a model with a division of the catalyst or filter in several cells
F01N 2900/0408
. .
using a feed-back loop
F01N 2900/0411
. .
using a feed-forward control
F01N 2900/0412
. .
using pre-calibrated maps, tables or charts
F01N 2900/0414
. .
using a state observer
F01N 2900/0416
. .
using the state of a sensor, e.g. of an exhaust gas sensor
F01N 2900/0418
. .
using integration or an accumulated value within an elapsed period
F01N 2900/0421
. .
using an increment counter when a predetermined event occurs
F01N 2900/0422
. .
measuring the elapsed time
Collapse
F01N 2900/06
.
Parameters used for exhaust control or diagnosing
F01N 2900/0601
. .
being estimated
F01N 2900/0602
. .
Electrical exhaust heater signals
F01N 2900/08
. .
said parameters being related to the engine
Collapse
F01N 2900/10
. .
said parameters being related to the vehicle or its components
F01N 2900/102
. . .
Travelling distance
F01N 2900/104
. . .
Battery status
F01N 2900/12
. .
said parameters being related to the vehicle exterior
Collapse
F01N 2900/14
. .
said parameters being related to the exhaust gas
F01N 2900/1402
. . .
Exhaust gas composition
F01N 2900/1404
. . .
Exhaust gas temperature
F01N 2900/1406
. . .
Exhaust gas pressure
F01N 2900/1411
. . .
Exhaust gas velocity
Collapse
F01N 2900/16
. .
said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
F01N 2900/1602
. . .
Temperature of exhaust gas apparatus
F01N 2900/1606
. . .
Particle filter loading or soot amount
F01N 2900/1611
. . .
Particle filter ash amount
F01N 2900/1612
. . .
SOx amount trapped in catalyst
F01N 2900/1614
. . .
NOx amount trapped in catalyst
F01N 2900/1616
. . .
NH3-slip from catalyst
F01N 2900/1618
. . .
HC-slip from catalyst
F01N 2900/1621
. . .
Catalyst conversion efficiency
F01N 2900/1622
. . .
Catalyst reducing agent absorption capacity or consumption amount
F01N 2900/1624
. . .
Catalyst oxygen storage capacity
F01N 2900/1626
. . .
Catalyst activation temperature
F01N 2900/1628
. . .
Moisture amount in exhaust apparatus
F01N 2900/1631
. . .
Heat amount provided to exhaust apparatus
Collapse
F01N 2900/18
. .
said parameters being related to the system for adding a substance into the exhaust
F01N 2900/1804
. . .
Properties of secondary air added directly to the exhaust
Collapse
F01N 2900/1806
. . .
Properties of reducing agent or dosing system
F01N 2900/1808
. . . .
Pressure
F01N 2900/1811
. . . .
Temperature
F01N 2900/1812
. . . .
Flow rate
F01N 2900/1814
. . . .
Tank level
F01N 2900/1818
. . . .
Concentration of the reducing agent
F01N 2900/1821
. . . .
Injector parameters
F01N 2900/1822
. . . .
Pump parameters
F01N 2900/1824
. . . .
Properties of the air to be mixed with added substances, e.g. air pressure or air temperature
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013