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12 条记录 (耗时 0.011 秒)

    METHOD PERTAINING TO AN SCR SYSTEM AND AN SCR SYSTEM.
    1.
    发明公开
    METHOD PERTAINING TO AN SCR SYSTEM AND AN SCR SYSTEM. 有权
    适用于SCR系统和SCR系统的方法。

    公开(公告)号：EP2870331A1

    公开(公告)日：2015-05-13

    申请号：EP13819990.6

    申请日：2013-07-04

    申请人： Scania CV AB

    发明人： SARBY, Håkan

    IPC分类号： F01N3/035 ,  F01N3/20 ,  F01N9/00

    CPC分类号： F01N3/208 ,  F01N3/035 ,  F01N3/2066 ,  F01N9/00 ,  F01N13/0093 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/1406 ,  F01N2900/1602 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    摘要： The invention relates to a method pertaining to an SCR system wherein a reducing agent is provided to an exhaust gas stream from an engine (230) for purifying said exhaust gas with respect to among other things content of NOx, wherein said SCR system comprises an SCR catalyst (265) and an upstream of said SCR catalyst (265) arranged and for SCR function coated filter (260), a first dosing unit (250a) for provision of reducing agent being arranged upstream of said filter (260) and a second dosing unit (250b) for provision of reducing agent being arranged upstream of said SCR catalyst (265) and downstream of said filter (260). The method comprises the steps of: - continuously determining a differential pressure (P) over said filter (260); - where applicable, controlling dosing of said first and said second dosing unit (250a, 250b) on the basis of the thus determined differential pressure (P) over said filter (260). The invention relates also to a computer programme product comprising programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to an SCR system and a motor vehicle equipped with the SCR system.

    摘要翻译： 本发明涉及一种涉及SCR系统的方法，其中还原剂被提供给来自发动机（230）的排气流，用于相对于NOX的其他含量来净化所述排气，其中所述SCR系统包括SCR 在所述过滤器（260）的上游布置有用于提供还原剂的第一定量单元（250a）和第二定量给料单元（250a），所述第二定量给料单元（250a）包括催化剂（265）和布置在所述SCR催化剂（265） 用于提供还原剂的单元（250b）布置在所述SCR催化剂（265）的上游和所述过滤器（260）的下游。 该方法包括以下步骤： - 连续确定所述过滤器（260）上的压差（P）; - 在适用的情况下，基于在所述过滤器（260）上由此确定的压差（P）来控制所述第一和所述第二给料单元（250a，250b）的定量给料。 本发明还涉及一种包括用于实现根据本发明的方法的计算机（200; 210）的程序代码（P）的计算机程序产品。 本发明还涉及配备有SCR系统的SCR系统和机动车辆。

    COMBUSTION ENGINE AND METHOD FOR CONTROLLING A COMBUSTION ENGINE DURING CYLINDER DEACTIVATION
    2.
    发明公开
    COMBUSTION ENGINE AND METHOD FOR CONTROLLING A COMBUSTION ENGINE DURING CYLINDER DEACTIVATION 审中-公开
    内燃发动机及其控制方法内燃机期间，气缸关闭

    公开(公告)号：EP3114339A1

    公开(公告)日：2017-01-11

    申请号：EP15758607.4

    申请日：2015-02-26

    申请人： Scania CV AB

    发明人： OLOFSSON, Eric ,  STENLÅÅS, Ola ,  LINDERYD, Johan ,  DAHL, Andreas ,  SARBY, Håkan

    IPC分类号： F02D13/06 ,  F02D17/02

    CPC分类号： F02D13/06 ,  F02D13/0257 ,  F02D17/00 ,  F02D17/02 ,  F02D41/0087 ,  F02D41/024 ,  F02D2041/0012 ,  F02D2250/28 ,  Y02T10/18

    摘要： The invention relates to an internal combustion engine of four-stroke type, comprising a first valve control means (21), which is arranged to control the first valve (18) to open at a bottom dead centre (BDC) for the piston (P1 ) in a first cylinder (C1), between an expansion stroke and an exhaust stroke, and to close at a top dead centre (TDC) for the piston (P1) in the first cylinder (C1), between the exhaust stroke and an inlet stroke. A second valve control means (22) is arranged to control a second valve (19) to open when the first valve (18) closes, and to close at the bottom dead centre (BDC), between the inlet stroke and a compression stroke. A deactivation device (34) is arranged to control a third valve (24), so that it remains closed during all the strokes of the engine (2). The invention also pertains to a vehicle (1) comprising such an internal combustion engine (2) and a method to control an internal combustion engine (2)

    摘要翻译： （本发明涉及在四冲程型的内燃机，包括布置用于控制所述第一阀（18）在用于将活塞P1下死点（BDC）打开的第一阀控制装置（21）的所有 在第一气缸（C1），并且第一气缸（C1）在排气冲程和之间的入口，以收于上死点（TDC）的活塞P1）（在膨胀冲程和排气冲程之间） 中风。 第二阀控制装置（22）被布置成控制第二阀（19）打开时所述第一阀（18）关闭，并且关闭在底部死点（BDC）时，吸入冲程和压缩冲程之间。 去激活装置（34）被布置成控制第三阀（24），所以这样做是保持所述发动机（2）的全部笔划期间关闭。 因此，本发明涉及包括求内燃机的车辆（1）（2）和内燃机的控制的方法（2）

    ARRANGEMENT AND METHOD FOR CONTROLLING THE QUANTITY OF A REDUCTANT INTRODUCED INTO AN EXHAUST LINE OF AN INTERNAL COMBUSTION ENGINE
    4.
    发明公开
    ARRANGEMENT AND METHOD FOR CONTROLLING THE QUANTITY OF A REDUCTANT INTRODUCED INTO AN EXHAUST LINE OF AN INTERNAL COMBUSTION ENGINE 审中-公开
    用于控制数量在内燃发动机的排气管装置和方法喷射的还原剂

    公开(公告)号：EP2603683A1

    公开(公告)日：2013-06-19

    申请号：EP11816693.3

    申请日：2011-07-11

    申请人： Scania CV AB

    发明人： SARBY, Håkan

    IPC分类号： F01N9/00 ,  F01N3/20 ,  F01N11/00

    CPC分类号： B01D53/9495 ,  F01N3/106 ,  F01N3/208 ,  F01N13/0097 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2560/14 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1616 ,  F02B37/00 ,  Y02T10/24

    摘要： The present invention relates to an arrangement for controlling the injection of a reducing agent in an exhaust line of a combustion engine (1). The arrangement comprises an injection system (8-12) adapted to injecting the reducing agent into the exhaust line (3), a first catalyst (13) which is adapted to reducing the amount of nitrogen oxides in the exhaust gases in the exhaust line (3) by means of the reducing agent supplied, and a second catalyst (14) which is situated downstream of the first catalyst (13) in the exhaust line (3) and converts ammonia in the exhaust gases to nitrogen gas and nitrous oxide. The arrangement comprises a nitrous oxide sensor (17) adapted to monitoring the amount of nitrous oxide present in the exhaust line (3) at a location downstream of the second catalyst (14), and a control unit (10) adapted to controlling the injection system (8-12) so that it adjusts the amount (q) of reducing agent injected into the exhaust line (3) if the sensor (17) detects that the amount of nitrous oxide is at a value which is not within a desired range (A).

    摘要翻译： 用于在内燃发动机（1）的排气线路控制在还原剂的喷射的装置：一种注射系统（8-12）喷射还原剂到排气管线（3）。 第一催化剂（13）减少在使用还原剂的排气管线（3）的废气中的氮氧化物的量。 第二催化剂（14）在所述排气管线（3）所述第一催化剂（13）的下游的废气中的氨转换成氮气和一氧化二氮。 一氧化二氮传感器（17）监测一氧化二氮的排气管线（3），第二催化剂（14）的下游的量。 喷射系统（8-12）bestimmt还原剂的量（Q）的控制单元（10）喷射到所述排气管线（3）如果传感器（17）检测到那样一氧化二氮的量是不是一个选择内 范围（A）。