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    • 1. 发明申请
    • EXHAUST GAS PURIFICATION APPARATUS OF INTERNAL COMBUSTION ENGINE
    • 内燃机排气净化装置
    • US20090288393A1
    • 2009-11-26
    • US12092218
    • 2006-10-31
    • Shigehiro MatsunoJun Tahara
    • Shigehiro MatsunoJun Tahara
    • F01N9/00F01N3/10
    • B01D53/9409B01D53/9495B01D2251/208F01N3/0821F01N3/0842F01N3/0885F01N2610/03F02B37/00F02D41/0275F02D41/1441F02D2041/0265F02D2200/0802F02M26/15F02M26/23F02M26/35
    • An adding time a of a fuel addition to an exhaust system is limited to a guard value G or less during an adding period A of a concentrated intermittent fuel of a catalyst recovery control. Accordingly, a one-time fuel adding amount from an adding valve 46 is limited to be equal to or less than a predetermined value, and it is possible to prevent such a great amount of unburned fuel component that cannot be fully purified by a NOx catalyst from being supplied to the NOx catalyst during the adding period A. Further, if a total amount (GF+Q1)·t of the unburned fuel component supplied to the NOx catalyst during the adding period A reaches an allowable upper limit value UL, the concentrated intermittent fuel addition is canceled and a suspend period B is forcibly started. Accordingly, it is possible to prevent a total amount of such a great amount of unburned fuel component that cannot be fully purified by the NOx catalyst from being supplied to the NOx catalyst during the adding period A. Therefore, generation of white smoke in exhaust gas of the internal combustion engine by an excessive supply of the unburned fuel component to the NOx catalyst at a time of executing catalyst recovery control can be prevented.
    • 在催化剂回收控制的浓缩间歇燃料的添加期间A中,排气系统的添加燃料添加时间a被限制在保护值G以下。 因此,来自加法阀46的一次性燃料添加量被限制在等于或小于预定值,并且可以防止这样大量的不能被NOx催化剂完全净化的未燃燃料成分 在添加期间A期间供给到NOx催化剂。此外,如果在添加期间A中供给至NOx催化剂的未燃烧燃料成分的总量(GF + Q1)·t达到容许上限值UL,则 集中的间歇燃料添加被取消并且暂停期间B被强制启动。 因此,可以防止在添加期间A中将不能被NOx催化剂全部纯化的大量未燃燃料成分的总量供给至NOx催化剂。因此,排气中产生白烟 可以防止在执行催化剂回收控制时过量地供应未燃燃料组分到NOx催化剂的内燃机。
    • 4. 发明申请
    • EXHAUST GAS PURIFICATION DEVICE
    • 排气净化装置
    • US20090038290A1
    • 2009-02-12
    • US12065293
    • 2006-08-28
    • Jun Tahara
    • Jun Tahara
    • F01N3/20
    • F01N3/0253B01D53/9445B01D53/9495B01D2251/208F01N9/002F01N2610/03F02D41/1445F02D41/1446F02D41/145F02D2200/703Y02T10/22Y02T10/47
    • An ECU corrects a fuel addition interval, based on an amount of change between a present backpressure and a basic backpressure obtained when a basic addition interval is set, to reduce the fuel addition interval with an increase in the amount of change in the backpressure (steps ST1-ST4). Thereby, a required fuel addition amount can be secured even if a pressure in an exhaust path provided with a fuel addition valve is increased and thus the backpressure at an ejection hole portion of the fuel addition valve is increased. Consequently, an increase in a catalyst bed temperature required for an exhaust gas purifying function of a catalyst can be ensured. Further, a temperature at a tip of the fuel addition valve can be maintained at not more than a predetermined value (i.e., a temperature at which production of deposits can be suppressed), and thus clogging of the ejection hole of the fuel addition valve with the deposits can be avoided.
    • ECU根据当前背压与设定基本相加间隔之间获得的基本背压之间的变化量来校正燃料添加间隔,以随着背压变化量的增加而减少燃料添加间隔(步骤 ST1-ST4)。 因此,即使设置有燃料添加阀的排气路径中的压力增加,因此燃料添加阀的喷射孔部分的背压增加,也能够确保所需的燃料添加量。 因此,能够确保催化剂的废气净化功能所需的催化剂床温度的上升。 此外,燃料添加阀的前端的温度可以保持在规定值以下(即,可以抑制沉积物的产生的温度),并且因此燃料添加阀的喷射孔的堵塞与 可以避免沉积物。
    • 6. 发明授权
    • Device for limiting output of internal combustion engine when the engine has abnormality
    • 发动机发生异常时限制内燃机输出的装置
    • US08229654B2
    • 2012-07-24
    • US12678915
    • 2008-09-19
    • Jun TaharaMitsuhiro NadaHiroki Kinuhata
    • Jun TaharaMitsuhiro NadaHiroki Kinuhata
    • B60T7/12G05D1/00
    • F02D31/009F02D41/22F02D2041/227F02D2250/26Y02T10/40
    • An output restriction device for restricting engine output when a drive power output system for an internal combustion engine has an abnormality is provided. The output restriction device includes an abnormality detection unit, and initial restriction unit, and a secondary restriction unit. The abnormality restriction unit detects an abnormality in the drive power output system. The initial restriction unit restricts a tolerable range of the engine output to a first restriction region when the abnormality detection unit detects an abnormality in the drive power output system. A secondary restriction unit shifts the tolerable range of the engine output to a second restriction region, which has an upper limit lower than that of the first restriction region, in accordance with an operation history of the engine after the initial restriction unit restricts the tolerable range of the engine output to the first restriction region.
    • 提供一种用于当内燃机的驱动力输出系统异常时用于限制发动机输出的输出限制装置。 输出限制装置包括异常检测单元和初始限制单元以及次级限制单元。 异常限制部检测驱动力输出系统的异常。 当异常检测单元检测到驱动功率输出系统中的异常时,初始限制单元将发动机输出的容许范围限制到第一限制区域。 次级限制单元根据发动机的运行历史,在初始限制单元限制容许范围之后,将发动机输出的可容许范围转移到具有比第一限制区域的上限低的上限的第二限制区域 的发动机输出到第一限制区域。