METALLISCHER WABENKÖRPER AUS ZUMINDEST TEILWEISE GELOCHTEN BLECHLAGEN
    42.
    发明公开
    METALLISCHER WABENKÖRPER AUS ZUMINDEST TEILWEISE GELOCHTEN BLECHLAGEN 有权
    金属蜂窝体至少部分穿孔板BASES

    公开(公告)号:EP1529156A1

    公开(公告)日:2005-05-11

    申请号:EP03793618.4

    申请日:2003-07-16

    IPC分类号: F01N3/28 F01N7/00

    摘要: A metal honeycomb body having an axial length (L) and consisting of sheet metal layers (1; 10, 11) which are structured such that a fluid, especially the exhaust gas of an internal combustion engine, can flow through the honeycomb body in a direction of flow (S) from one incoming flow front face (12) to an outgoing flow front face (13). The sheet metal layers (1; 10, 11) are provided with a plurality openings (6), at least in partial areas thereof. The honeycomb body has holes (6) in all of the sheet metal layers (1; 10, 11) in a partial volume (T) of at least 55 % of the axial length (L) thereof and at a radial dimension of 20 mm.The holes (6) have respectively a surface of 1 -120 mm2; the surface of the sheet metal layers in the partial volume (T) is reduced by the holes (6) by 10-80 %, preferably 35-50 % in relation to a sheet metal layer without any holes; the distance (R2,R3) of the partial volume (T) to the front faces (12, 13) of the honeycomb is such that no holes come into contact with or overlap with the front-face edges of the sheet metal layers.

    WABENKÖRPER MIT RADIAL VERSCHIEDEN AUSGEFÜHRTEN VERBINDUNGSSTELLEN
    45.
    发明公开
    WABENKÖRPER MIT RADIAL VERSCHIEDEN AUSGEFÜHRTEN VERBINDUNGSSTELLEN 有权
    径向不同阐述联络点蜂窝体

    公开(公告)号:EP2283215A1

    公开(公告)日:2011-02-16

    申请号:EP09741985.7

    申请日:2009-04-23

    IPC分类号: F01N3/28 B01J35/04

    摘要: The invention relates to a honeycomb body (1), at least having a housing (2) and a honeycomb structure (3) with a plurality of channels (4), wherein the honeycomb structure (3) is formed by at least one at least partially structured metal layer (5), which forms connecting points (6) that fix the honeycomb structure (3) in place, and wherein a cross-section (8) of the honeycomb structure (3) has radial zones (9, 10, 11) with connecting points (6), wherein in at least one zone (9, 10, 11) furthermore at least 1%, and no more than 20%, of the inner contact points (7) of the at least one at least partially structured metal layer (5) in the cross-section (8) form a connecting point (6), and the connecting points (6) have lengths (13) in the direction of a structure (12), wherein the lengths (13) of the connecting points (6) are different in at least two radial zones (9, 10, 11).

    VERFAHREN UND VORRICHTUNG ZUM VERDAMPFEN EINES FLUIDES
    47.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUM VERDAMPFEN EINES FLUIDES 有权
    方法和装置蒸发流体

    公开(公告)号:EP2150691A1

    公开(公告)日:2010-02-10

    申请号:EP08759837.1

    申请日:2008-05-21

    IPC分类号: F01N3/20 B01J19/26

    摘要: The method according to the invention for evaporating a predeterminable volume of a fluid comprises the following steps: a) successive addition of at least one first partial volume at a first volume adding rate (17) and at least one predeterminable second partial volume that is different from the first partial volume, at a second volume adding rate (17) to a supply line (3); b) at least partial evaporating of the partial volumes such that a vapor film is formed between the partial volumes and a wall of the supply line (3); c) conveying the partial volumes through the supply line (3) to an evaporator surface (5); and d) applying the partial volumes to a region of the evaporator surface (5), the position of which is varied as a function of at least one of the following parameters: i) the mass of the corresponding partial volume and ii) the volume adding rate (17) of the corresponding partial volume. The method according to the invention and the device (1) according to the invention advantageously permit an evaporation of a fluid, particularly of a urea/water solution, in a manner that is as effective as possible. The utilization of the highest possible proportion of evaporator surfaces is achieved by the mass and/or volume addition rate-dependent distribution of the impingement surfaces on the evaporator surface (5). For this purpose, a heating strategy is advantageously employed in the region of the supply line (3) that ensures that the Leidenfrost effect occurs when the individual partial volumes are added. In this manner, a distribution that is as even as possible can be achieved using a corresponding configuration of the geometry of the evaporator channel (4).

    VERFAHREN UND VORRICHTUNG ZUR BEREITSTELLUNG EINES EIN REDUKTIONSMITTEL UMFASSENDEN GASSTROMS
    48.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUR BEREITSTELLUNG EINES EIN REDUKTIONSMITTEL UMFASSENDEN GASSTROMS 有权
    方法和装置提供还原剂综合气体流量

    公开(公告)号:EP2057360A1

    公开(公告)日:2009-05-13

    申请号:EP07803531.8

    申请日:2007-09-17

    IPC分类号: F01N3/20 B01D53/90 B01D53/94

    摘要: The invention relates to a method for providing a reducing agent-containing gas flow (24) in the exhaust gas system of an internal combustion engine. Said method comprises the following steps: A) providing at least one reducing agent precursor (12, 28, 34); B) evaporating the at least one reducing agent precursor (12, 28, 34) to give a gas flow (13); C) at least partially heating the gas flow (13) to temperatures of at least 250°C; D) at least partially converting the reducing agent precursor (12, 28, 34) in the gas flow (13) to a reducing agent; and E) adding the reducing agent-containing gas flow (24) to the exhaust gas (25) of the internal combustion engine. The method and the device according to the invention allow the provision of a reducing agent-containing gas flow (13) the quantity of which can be easily controlled and can be adapted to the dynamic changes in situation which occur especially in the exhaust gas system of mobile applications such as for example motorcars. According to the invention, the temperature of the first zone (7) is kept at 150°C or just below while the temperature of the second zone (8) is kept at more than 300°C. The hydrolytic catalyst (22) is hardly cooled when the reducing agent precursor is fed to the hydrolytic catalyst (22) in the form of steam, thereby having a positive effect on the process.