SCR EXHAUST GAS TREATMENT
    1.
    发明公开
    SCR EXHAUST GAS TREATMENT 审中-公开
    SCR排气处理

    公开(公告)号:EP3208436A1

    公开(公告)日:2017-08-23

    申请号:EP17153883.8

    申请日:2017-01-31

    IPC分类号: F01N3/20 F01N3/027

    摘要: Reductant is metered into an engine exhaust gas after-treatment system upstream of an SCR catalyst at engine exhaust gas temperatures both less than and greater than a DEF dosing threshold temperature to render the catalyst effective in reducing NOx without creating undesired reaction products which would impair effectiveness of the after-treatment system at engine exhaust gas temperatures less than the DEF dosing threshold temperature.

    摘要翻译: 将还原剂计量加入SCR发动机上游的发动机排气后处理系统,发动机排气温度均低于和高于DEF给料阈值温度,以使催化剂有效地还原NO x,而不产生不利的反应产物,这会影响效率 在发动机排气温度低于DEF给料阈值温度的后处理系统中。

    Soot accumulation model for setpoint modification
    5.
    发明公开
    Soot accumulation model for setpoint modification 审中-公开
    用于设定值修改的烟灰累积模型

    公开(公告)号:EP2623756A3

    公开(公告)日:2015-04-22

    申请号:EP13153462.0

    申请日:2013-01-31

    IPC分类号: F02D41/14 F02D41/24

    摘要: A method controlling operation of an engine utilizing a number of preset operating parameters is provided. An operating mode of the engine is determined. An operating state of the engine is determined. A first plurality of engine parameter settings are retrieved from a memory in response to the determined operating mode and the determined operating state of the engine. The first plurality of engine parameter settings are applied to at least one control algorithm of the engine. A rate of soot accumulation from the engine is monitored. The rate of soot accumulation is compared to a predetermined soot accumulation rate threshold. A second plurality of engine parameter settings are retrieved from a memory in response to the monitored rate of soot accumulation exceeding the predetermined soot accumulation rate threshold.

    摘要翻译: 提供了一种利用多个预设操作参数来控制发动机的操作的方法。 确定发动机的运行模式。 确定发动机的运行状态。 响应于所确定的操作模式和所确定的发动机的操作状态,从存储器取回第一多个发动机参数设置。 第一多个发动机参数设置被应用于发动机的至少一个控制算法。 监测来自发动机的烟尘累积速率。 烟灰积累速率与预定的烟灰累积速率阈值进行比较。 响应于所监测的碳烟累积速率超过预定碳烟累积速率阈值,从存储器中检索第二多个发动机参数设置。

    Methods for controlling engine idle speed
    10.
    发明公开
    Methods for controlling engine idle speed 审中-公开
    Verfahren zur Steuerung der Leerlaufdrehzahl einer Brennkarftmaschine

    公开(公告)号:EP2713032A2

    公开(公告)日:2014-04-02

    申请号:EP13185992.8

    申请日:2013-09-25

    IPC分类号: F02D41/08 F02D41/16 F02D31/00

    摘要: The present technology provides one or more methods of operating an engine in a motor vehicle. In at least one embodiment, the existence of an engine idle condition is determined. The method may also include determining whether an operator is present in the vehicle. In some embodiments, the engine operates at a performance idle speed when an engine idle condition exists and an operator is present in the vehicle. In further embodiments, the engine operates at a fuel economy idle speed when an idle condition exists and no operator is present in the vehicle. In still further embodiments, the fuel economy idle speed will be lower than the performance idle speed. The present technology anticipates engine workload and controls engine idle speeds. Based on the anticipated workloads, the present technology can reduce engine stalling while also reducing emissions and increasing fuel economy.

    摘要翻译: 本技术提供在机动车辆中操作发动机的一种或多种方法。 在至少一个实施例中,确定发动机空转条件的存在。 该方法还可以包括确定操作者是否存在于车辆中。 在一些实施例中,当发动机空转条件存在并且操作者存在于车辆中时,发动机以性能怠速运转。 在另外的实施例中,当空转状态存在并且车辆中没有操作者时,发动机以燃料经济性怠速运转。 在另外的实施例中,燃料经济性怠速将低于性能空转速度。 本技术预计发动机工作量并控制发动机空转速度。 根据预期的工作量,本技术可以减少发动机停滞,同时减少排放和提高燃油经济性。