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    DOSIERSYSTEM ZUR EINDÜSUNG EINER HARNSTOFFLÖSUNG IN DEN ABGASSTROM EINES VERBRENNUNGSMOTORS
    23.
    发明公开
    DOSIERSYSTEM ZUR EINDÜSUNG EINER HARNSTOFFLÖSUNG IN DEN ABGASSTROM EINES VERBRENNUNGSMOTORS 有权
    给药和方法注塑尿素溶液加入到内燃机的排气流

    公开(公告)号：EP2250351A1

    公开(公告)日：2010-11-17

    申请号：EP09719861.8

    申请日：2009-02-02

    申请人： Albonair Gmbh

    发明人： HÜTHWOHL, Georg

    IPC分类号： F01N3/20

    CPC分类号： F01N3/2066 ,  F01N3/208 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/085 ,  F01N2610/14 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2610/1473 ,  F01N2610/148 ,  F01N2900/1824 ,  Y02T10/24

    摘要： The invention relates to a metering system for injecting a urea solution into the exhaust gas flow (9) of an internal combustion engine for selective catalytic reduction, and method for controlling the injecting of a urea solution by means of compressed air, wherein the metering system can be connected to a urea solution tank (1), wherefrom urea solution can be removed, and wherein the metering system can be connected to a compressed air supply (6), wherein the metering system comprises at least one nozzle (5) through which the urea solution can be injected into the exhaust gas flow (9) by means of compressed air, wherein the metering system comprises an air valve (7) by means of which the pressure and/or the quantity of air and/or the valve opening times of the compressed air supply (6) can be regulated, and a sensor for measuring the pressure and/or the quantity of air is disposed in the compressed air supply (6) between the air valve (7) and the nozzle (5), so that the quantity of compressed air fed in for atomizing the urea solution is controlled and lowered to the minimum air quantity required at a given moment, depending on the operating parameters of exhaust gas temperature and exhaust gas mass flow.

    REDUKTIONSMITTELDOSIERSYSTEM MIT MODULAREM AUFBAU
    28.
    发明公开
    REDUKTIONSMITTELDOSIERSYSTEM MIT MODULAREM AUFBAU 审中-公开

    公开(公告)号：EP3332104A1

    公开(公告)日：2018-06-13

    申请号：EP16742163.5

    申请日：2016-07-15

    申请人： Albonair GmbH

    发明人： HÜTHWOHL, Georg

    IPC分类号： F01N3/20

    CPC分类号： F01N3/2066 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/085 ,  F01N2610/14 ,  F01N2610/1453 ,  Y02T10/24

    摘要： The invention relates to a reductant-metering system (10) for injecting a reductant into the exhaust-gas flow of an internal combustion engine for selective catalytic reduction, comprising a conveying pump, by means of which reductant from a reductant tank (40) is suctioned from the tank (40) via a suction connection piece (23) and conveyed via a pressure connection piece (50) and introduced into the exhaust-gas flow of the internal combustion engine via at least one nozzle (60), wherein the metering system (10) has a compressed-air supply and the reductant is atomized by means of compressed air outside of the nozzle (60), wherein the reductant-metering system (10) has a modular structure consisting of at least two integrated assemblies (20, 30), wherein the first integrated assembly is designed as a metering unit (20) and has at least the pump, the suction connection piece, the pressure connection piece, and a compressed-air connection and wherein the second integrated assembly is designed as a compressed-air unit (30) and has at least one controlled valve for controlling the compressed-air supply.