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    SELECTIVE CATALYTIC REDUCTION SYSTEM
    2.
    发明申请
    SELECTIVE CATALYTIC REDUCTION SYSTEM 有权
    选择性催化还原系统

    公开(公告)号：US20130064718A1

    公开(公告)日：2013-03-14

    申请号：US13699491

    申请日：2011-05-16

    申请人： Takao Onodera ,  Shinji Hara ,  Tomoyuki Kamijyou

    发明人： Takao Onodera ,  Shinji Hara ,  Tomoyuki Kamijyou

    IPC分类号： G05D7/00

    CPC分类号： F01N3/2066 ,  F01N9/00 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/1406 ,  F02D41/145 ,  F02D41/146 ,  F02D41/1463 ,  F02D41/1465 ,  Y02T10/24 ,  Y02T10/47

    摘要： An SCR system that can detect a NOx concentration accurately irrespective of an operation state of an engine is provided. The SCR system including: an SCR device 103 provided in an exhaust pipe 102 for an engine E; a dosing valve 104 that injects urea solution on an upstream side of the SCR device 103; a NOx sensor 110 provided in the exhaust pipe 102; and an urea solution injection control unit 127 that controls a urea solution injection quantity according to a NOx concentration value detected by the NOx sensor 110 includes a pressure estimation unit 131 that estimates a NOx sensor pressure that is a pressure inside the exhaust pipe 102 at a position where the NOx sensor 110 is provided, and a NOx concentration detection value correction unit 136 that corrects the NOx concentration value detected by the NOx sensor 110, according to the NOx sensor pressure estimated by the pressure estimation unit 131.

    摘要翻译： 提供一种能够精确地检测NOx浓度而不考虑发动机的运转状态的SCR系统。 SCR系统包括：设置在发动机E的排气管102中的SCR装置103; 在SCR装置103的上游侧注入尿素溶液的计量阀104; 设置在排气管102中的NOx传感器110; 并且根据由NOx传感器110检测出的NOx浓度值来控制尿素溶液喷射量的尿素溶液喷射控制部127包括压力估计部131，其估计作为排气管102内的压力的NOx传感器压力 设置有NOx传感器110的位置，以及根据由压力推测部131推定的NOx传感器压力来校正由NOx传感器110检测出的NOx浓度值的NOx浓度检测值校正部136。

    Exhaust pipe injection control device
    3.
    发明授权
    Exhaust pipe injection control device 有权
    排气管喷射控制装置

    公开(公告)号：US08875492B2

    公开(公告)日：2014-11-04

    申请号：US13703219

    申请日：2011-06-10

    申请人： Naofumi Ochi ,  Tetsuya Murata ,  Takao Onodera

    发明人： Naofumi Ochi ,  Tetsuya Murata ,  Takao Onodera

    IPC分类号： F01N3/00 ,  F01N3/025 ,  F01N3/36 ,  F01N9/00 ,  F02B37/013 ,  F02M63/02

    CPC分类号： F01N3/0253 ,  F01N3/36 ,  F01N9/002 ,  F01N2560/08 ,  F01N2610/03 ,  F01N2900/0412 ,  F01N2900/0416 ,  F01N2900/08 ,  F01N2900/1808 ,  F02B37/013 ,  F02M63/0225 ,  Y02T10/47

    摘要： An exhaust pipe injection control device for controlling an appropriate fuel injection amount regardless of engine rotation speed. The exhaust pipe injection control device includes: a target injection amount setting unit which sets, according to an engine rotation speed and an exhaust gas flow rate, a target injection amount that is injected in a single injection from an exhaust pipe injector; a base pulse width (“BPW”) map in which a fuel injection time of the exhaust pipe injector is set so that, with respect to the target injection amount and an exhaust pipe injection fuel pressure, fuel in the target injection amount is injected; and an exhaust pipe injection executing unit which performs injection from the exhaust pipe injector by referring to the BPW map based on the target injection amount and the exhaust pipe injection fuel pressure.

    摘要翻译： 一种排气管喷射控制装置，用于与发动机转速无关地控制适当的燃料喷射量。 排气管喷射控制装置包括：目标喷射量设定单元，其根据发动机转速和排气流量设定从排气管喷射器以单次喷射喷射的目标喷射量; 基准脉冲宽度（“BPW”）图，其中排气管喷射器的燃料喷射时间被设定为使得相对于目标喷射量和排气管喷射燃料压力喷射目标喷射量的燃料; 以及排气管喷射执行单元，其基于目标喷射量和排气管喷射燃料压力参照BPW图从排气管喷射器进行喷射。

    Method of Purifying Exhaust Gas and Exhaust Gas Purification System
    4.
    发明申请
    Method of Purifying Exhaust Gas and Exhaust Gas Purification System 有权
    净化废气和废气净化系统的方法

    公开(公告)号：US20090183495A1

    公开(公告)日：2009-07-23

    申请号：US12227931

    申请日：2007-05-14

    申请人： Takao Onodera ,  Naofumi Ochi ,  Shigeru Ikeda ,  Tatsuo Mashiko

    发明人： Takao Onodera ,  Naofumi Ochi ,  Shigeru Ikeda ,  Tatsuo Mashiko

    IPC分类号： F01N9/00 ,  F01N3/023 ,  F01N3/035

    CPC分类号： F01N3/0231 ,  F01N3/0235 ,  F01N3/035 ,  F01N9/002 ,  F01N13/0097 ,  F01N2250/02 ,  F01N2260/14 ,  F01N2430/085 ,  F01N2560/08 ,  F01N2900/0422 ,  F01N2900/08 ,  F01N2900/1606 ,  F02D41/029 ,  F02D41/08 ,  F02D2200/0812 ,  Y02T10/47

    摘要： Even in the case of driving for a long time in the low rotation speed driving condition in which the exhaust flow rate is small and an estimation of the PM accumulated amount due to the pressure difference between the front and the back sides of a filter is difficult, the forced regeneration time can be accurately judged, the deterioration of fuel efficiency that is caused by excessive PM trapping can be avoided, and at the same time, thermal runaway that is generated by the excessive accumulated amount of PM and melting damage of the DPF due to this thermal runaway can be prevented. In the exhaust gas purification system 1 that performs a forced regeneration control by judging a forced regeneration starting time of the DPF 12b from the pressure difference ΔPm between the front and the back sides of the DPF 12b, in the case of detecting that the driving condition of the internal combustion engine 10 is a low rotation speed driving condition, the sustaining time tm of the low rotation speed driving condition is measured, and when the measured sustaining time tm exceeds the predetermined time for judgment tc, the forced regeneration control of the DPF 12b is performed without affecting the pressure difference ΔPm between the front and the back sides of the DPF 12b.

    摘要翻译： 即使在排气流量小的低转速行驶条件下长时间行驶，并且由于过滤器的前后侧之间的压力差导致的PM累积量的估计困难的情况 可以准确地判断强制再生时间，可以避免PM过量引起的燃油效率的劣化，同时由PM的过度累积量和DPF的熔融损伤产生的热失控 由于这种热失控可以防止。 在通过从DPF 12b的前侧和后侧之间的压力差ΔPm判断DPF 12b的强制再生开始时间来进行强制再生控制的排气净化系统1中，在检测到驱动条件 内燃机10的转速为低转速驱动条件时，测量低转速驱动条件的维持时间tm，并且当测量的维持时间tm超过用于判断的预定时间tc时，DPF的强制再生控制 执行12b而不影响DPF 12b的前侧和后侧之间的压力差ΔPm。

    Exhaust Gas Purification Method and Exhaust Gas Purification System
    5.
    发明申请
    Exhaust Gas Purification Method and Exhaust Gas Purification System 有权
    废气净化方法和废气净化系统

    公开(公告)号：US20090165445A1

    公开(公告)日：2009-07-02

    申请号：US12086997

    申请日：2007-01-10

    申请人： Takashi Haseyama ,  Takao Onodera ,  Yoshinobu Watanabe ,  Tatsuo Mashiko

    发明人： Takashi Haseyama ,  Takao Onodera ,  Yoshinobu Watanabe ,  Tatsuo Mashiko

    IPC分类号： F01N9/00 ,  F01N3/10

    CPC分类号： B01D53/944 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2258/012 ,  F01N3/023 ,  F01N3/035 ,  F01N2250/02 ,  F02D41/025 ,  F02D41/029 ,  F02D41/405 ,  F02D2200/0802 ,  F02D2200/703 ,  Y02T10/26 ,  Y02T10/44

    摘要： In an exhaust gas purification system (1) for conducting control of raising temperature of a DPF (12b) by supplying an unburned fuel to an upstream side of an oxidation catalyst to oxidize it, a minimum value (Qumin) of a first upper limit value (Qu1) acquired by subtracting a fuel injection amount (Qe) for in-cylinder combustion from a first combustible fuel amount (Qa1) limited by an air/fuel ratio, a second upper limit value (Qu2) acquired by subtracting the fuel injection amount (Qe) for in-cylinder combustion from a second combustible fuel amount (Qa2) limited by an atmospheric pressure, and a third upper limit value (Qu3), which is a third combustible fuel amount (Qa3) which can be oxidized by the oxidation catalyst limited by a catalyst temperature index temperature (Tg1, Tg2) and an engine speed (Ne) is set as an upper limit value (Qu) for the unburned fuel supply amount (Qp). By this arrangement, at forced regeneration of the DPF (12b), the unburned fuel supplied into an exhaust gas is surely oxidized and generation of white smoke is prevented regardless of an operation state of an internal combustion engine (10).

    摘要翻译： 在排气净化系统（1）中，通过向氧化催化剂的上游侧供给未燃燃料进行氧化来进行DPF（12b）的升温控制，将第一上限值（Qumin）的最小值（Qumin） （Qu1）从通过空燃比限制的第一可燃燃料量（Qa1）减去用于缸内燃烧的燃料喷射量（Qe）而获得的第二上限值（Qu2），通过减去燃料喷射量 （Qa），第三可燃燃料量（Qa3）的第三上限值（Qu3），该第三可燃燃料量（Qa3）可以被氧化而被氧化 由催化剂温度指数温度（Tg1，Tg2）和发动机转速（Ne）限制的催化剂被设定为未燃燃料供给量（Qp）的上限值（Qu）。 通过这种布置，在DPF（12b）的强制再生时，不管内燃机（10）的运行状态如何，被供给到排气中的未燃燃料被确实地氧化，并且防止产生白烟。

    SELECTIVE CATALYTIC REDUCTION SYSTEM
    10.
    发明申请
    SELECTIVE CATALYTIC REDUCTION SYSTEM 有权
    选择性催化还原系统

    公开(公告)号：US20130071291A1

    公开(公告)日：2013-03-21

    申请号：US13699541

    申请日：2011-05-16

    申请人： Takao Onodera ,  Hiroyuki Oohira ,  Masanobu Minezawa

    发明人： Takao Onodera ,  Hiroyuki Oohira ,  Masanobu Minezawa

    IPC分类号： F01N3/18

    CPC分类号： F01N3/208 ,  F01N2610/02 ,  F01N2610/1493 ,  F01N2900/1404 ,  F01N2900/1626 ,  Y02T10/24

    摘要： A selective catalytic reduction (SCR) system that can prevent fixation of urea solution to an interior of a dosing valve when the urea solution is not injected through the dosing valve. An SCR system closes a dosing valve when the exhaust gas temperature is lower than a temperature at which an SCR catalyst becomes active and is provided with a fixation prevention system that opens the dosing valve and controls a supply module to feed the urea solution in the dosing valve back to a urea tank to prevent fixation of the urea solution to the interior of the dosing valve, when the exhaust gas temperature is equal to or higher than a temperature at which the urea solution crystallizes and lower than the temperature at which the SCR catalyst becomes active.

    摘要翻译： 一种选择性催化还原（SCR）系统，当尿素溶液不通过计量阀注入时，可以防止尿素溶液固定在计量阀的内部。 当排气温度低于SCR催化剂活化的温度时，SCR系统关闭计量阀，并且设置有打开定量阀的定影防止系统，并且控制供应模块以在给料中供给尿素溶液 阀返回到尿素罐以防止尿素溶液固定在计量阀的内部，当排气温度等于或高于尿素溶液结晶的温度并且低于SCR催化剂的温度时 变得活跃。