摘要:
A substrate has corrugated sheet(s) and channel(s) for treating exhaust gases of combustion engines. The present invention also relates to methods for manufacturing and using the substrate having the open channel(s). The substrate (1) includes at least one corrugated sheet (3) having depressions (3d) and one flat wire mesh sheet (2) having depressions (2d) which is connected to the corrugated sheet (3) and between the flat wire mesh sheet (2) and the corrugated sheet (3) there are at least partially open channels (POC) for exhaust gas (EG) flow, and the depth of depression (2d) of the flat wire mesh sheet (2) is 0.05-2.0 mm smaller than the height of the corrugation (3c) of the corrugated sheet (3).
摘要:
The invention concerns a filtering body (7) consisting of a plurality of adjacent channels through the walls of which the exhaust gases are filtered. It comprises first (12 to 23) and second (8 to 11) filtering zones, the surface filtering the gases, relative to the unit area of the gas intake of the body (7), being different in the first (12 to 23) and second (8 to 11) zones. The invention is applicable to a diesel engine.
摘要:
The invention concerns a filtering body (7) consisting of a plurality of adjacent channels through the walls of which the exhaust gases are filtered. It comprises first (12 to 23) and second (8 to 11) filtering zones, the surface filtering the gases, relative to the unit area of the gas intake of the body (7), being different in the first (12 to 23) and second (8 to 11) zones. The invention is applicable to a diesel engine.
摘要:
A metal support for exhaust gas cleaning has a metal honeycomb core body fabricated by laying a planar sheet on a corrugated sheet and rolling the laminated sheets into a cylindrical configuration. The corrugated sheet has sinusoidal shaped portions having a wave height which is sufficient to contact the adjacent planar sheet and square wave portions which have a wave height which is insufficient to enable contact with the adjacent sheets. The square wave portions have corners which project out beyond the sinusoidal shaped portions and produce agitation and disturb the flow of gas and to induce an increase in the contact efficiency between the gas and surfaces carrying catalytic material. The planar sheet is not limited to continuously flat sheets and can include flat surfaces formed by zigzag or square wave shaped members. These members can be perforate and or made of a mesh material.
摘要:
An exhaust gas cleaning metallic honeycomb body for supporting thereon an exhaust gas cleaning catalyst is described. The body is of a honeycomb structure formed by alternately superposing two types of corrugated bands made of metal sheets one over the other in a contiguous relation and defining a number of network-patterned gas flow passages along a central axis thereof. The two types of corrugated bands comprise:(i) a first corrugated band having a triangular waveform of the structure that substantially-equilateral triangles are continuously connected in a lengthwise direction; and(ii) a second corrugated band having a substantially a sinusoidal waveform.
摘要:
A honeycomb body, especially a catalyst carrier body, includes at least partly structured metal sheets forming walls of a plurality of channels through which a fluid can flow. Some of the sheets have a primary corrugation with crests, troughs and a given corrugation height. The crests and/or the troughs having a plurality of inverted regions with a height being at most equal to the given corrugation height and preferably between 1/3 and 2/3 of the given corrugation height.
摘要:
Provided are metal foil matrices formed of corrugated metal foil with oblique angles. The metal foil matrices are capable of providing turbulent gas flow there through. The matrices may contain a catalytic coating. The matrices may be employed in a catalytic converter for treatment of exhaust gas emissions of an internal combustion engine.
摘要:
An emissions-control catalyst brick includes a plurality of formed metal ribbons that together define a repeating pattern of open cells. The ribbons are joined together in layers with the open cells of each layer offset from those of the adjacent layer. A catalyst wash coat is applied to the plurality of metal ribbons.
摘要:
A honeycomb structured body in which a plurality of porous ceramic members are combined with one another by interposing an adhesive layer, each of the porous ceramic members having a plurality of cells placed in parallel with one another in a longitudinal direction with a cell wall therebetween and having an outer edge wall on the outer edge surface thereof, wherein each of the porous ceramic members has a filling body which is provided so as to fill in at least one corner portion of at least one outermost cell of the porous ceramic members, a cross-sectional shape of the outermost cell at the face orthogonal to the longitudinal direction of the cells is an almost tetragon, and a cross-sectional shape of the filling body at the face orthogonal to the longitudinal direction of the cells is an almost right triangle.
摘要:
A system for neutralizing polluting gases from petrol and diesel internal combustion engines, or industrial smoke. The neutralizing system includes modules assembled together or integrated, chosen in accordance with the quantity of pollutant gases and their nature. The modules may include: hollow metal or mineral sphere-type pyrolisis heat cell module containing excrescences forming a large exchange area with polluting gases, or electric heaters, particle and HC filter, polluting gas purification module, sound damping and gas temperature reduction module.