利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

878 条记录 (耗时 0.016 秒)

    SYSTEM AND METHOD FOR COLD OPERATION NOX BURDEN REDUCTION
    3.
    发明公开
    SYSTEM AND METHOD FOR COLD OPERATION NOX BURDEN REDUCTION 审中-公开

    公开(公告)号：EP4279728A3

    公开(公告)日：2024-02-28

    申请号：EP23201813.5

    申请日：2021-12-07

    申请人： Cummins Inc. ,  Scania CV AB

    发明人： KODAVASAL, Janardhan ,  MERCHANT, Ved ,  TURLAPATI, Agneya ,  BARE, Kristopher

    IPC分类号： F01N3/021 ,  F01N3/20 ,  F02B37/24 ,  F01N9/00 ,  F02D41/00

    摘要： A method comprises determining that an aftertreatment system is in a cold-operation mode; initiating a low engine-out NOx (LEON) mode by controlling a component of a vehicle containing the aftertreatment system to decrease an instantaneous engine out NOx (EONOx) amount and to increase exhaust energy relative to a normal operation mode for an engine of the vehicle; receiving information indicative of an operating status of the vehicle during the LEON mode; disengaging the LEON mode; subsequent to disengaging the LEON mode, initiating a thermal management (TM) mode for the aftertreatment system, wherein the TM mode is initiated by controlling a component of the vehicle to increase fueling to the engine for a power level by reducing engine efficiency and directing excess fuel to the aftertreatment system; receiving information indicative of an operating status of the vehicle during the TM mode; and disengaging the TM mode.

    ENGINE PRE TURBINE PRESSURE MONITORING SYSTEM
    5.
    发明公开
    ENGINE PRE TURBINE PRESSURE MONITORING SYSTEM 审中-公开

    公开(公告)号：EP4279729A1

    公开(公告)日：2023-11-22

    申请号：EP23174287.5

    申请日：2023-05-19

    申请人： DAF Trucks N.V.

    发明人： WORMS, Luc Hubertus Josephina ,  NIEUWENHUIJZE, Maarten Robertus Ingmar

    IPC分类号： F02D41/14 ,  F02B37/24

    摘要： A pressure monitor is arranged to calculate a pre turbine pressure ( p 3 ). The monitor is programmed to:
    o derive a normalized turbine speed, normalized for a pre turbine temperature, and a heat capacity ratio of exhaust gas before the turbine as first inputs;
    o determine a turbine power normalizing factor as a second input;
    o determine an actual turbocompressor power value as a third input;
    o derive, for said first inputs, a linear relation between a turbine expansion ratio and a turbine power value normalized by the second input;
    o equate the turbine power value to the actual turbocompressor power; thereby deriving the pre turbine pressure from said linear relation, as an output.