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    SELECTIVE CATALYTIC REDUCTION SYSTEM
    1.
    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。

    DIRECT-INJECTION ENGINE COMBUSTION CHAMBER STRUCTURE
    3.
    发明申请
    DIRECT-INJECTION ENGINE COMBUSTION CHAMBER STRUCTURE 审中-公开
    直喷式发动机燃烧室结构

    公开(公告)号：US20140216393A1

    公开(公告)日：2014-08-07

    申请号：US14342670

    申请日：2012-08-23

    申请人： Tomoyuki Kamijyou ,  Tooru Mizuki ,  Shuuji Uchida ,  Shinichi Nagata ,  Yukihisa Kakehi

    发明人： Tomoyuki Kamijyou ,  Tooru Mizuki ,  Shuuji Uchida ,  Shinichi Nagata ,  Yukihisa Kakehi

    IPC分类号： F02B17/00

    CPC分类号： F02B17/005 ,  F02B23/0651 ,  F02B23/0672 ,  F02B23/0696 ,  F02F3/26 ,  Y02T10/125

    摘要： A direct-injection engine combustion chamber structure including, at a top surface of a piston, an inclined surface and an orthogonal surface. The inclined surface, continuous with an inner peripheral wall surface of a cavity, extends outward in a radial direction of the piston and becomes shallower toward an outer side in a radial direction of the piston. The orthogonal surface, continuous with an outer periphery of the inclined surface, without a gap, extends to an outer peripheral surface of the piston and is orthogonal to a central axis of the piston.

    摘要翻译： 一种直喷发动机燃烧室结构，包括在活塞的顶表面处的倾斜表面和正交表面。 与空腔的内周壁面连续的倾斜面在活塞的径向向外延伸，朝向活塞径向的外侧变浅。 与没有间隙的倾斜表面的外周连续的正交表面延伸到活塞的外周表面并且与活塞的中心轴线正交。

    SELECTIVE CATALYTIC REDUCTION SYSTEM
    4.
    发明申请
    SELECTIVE CATALYTIC REDUCTION SYSTEM 审中-公开
    选择性催化还原系统

    公开(公告)号：US20130055700A1

    公开(公告)日：2013-03-07

    申请号：US13698161

    申请日：2011-05-16

    申请人： Masanobu Minezawa ,  Koji Sakumoto ,  Tomoyuki Kamijyou

    发明人： Masanobu Minezawa ,  Koji Sakumoto ,  Tomoyuki Kamijyou

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

    CPC分类号： F01N3/208 ,  F01N11/00 ,  F01N2610/02 ,  F01N2900/0404 ,  F01N2900/08 ,  F01N2900/1814 ,  F01N2900/1818 ,  F02D2041/1432 ,  F02D2200/101 ,  F02N11/101 ,  F02N2200/022 ,  G01F23/0069 ,  Y02T10/24 ,  Y02T10/47

    摘要： A selective catalytic reduction system includes a urea aqueous solution tank to retain a urea aqueous solution to be injected into an exhaust pipe of an engine, a level sensor to detect a solution level height in the tank, a lowpass filter having a signal response characteristic in which a time constant is small when an engine rpm is low and the time constant is larger when the engine rpm is high, with respect to an output signal of the sensor, a remaining amount indicator to indicate a remaining amount of the solution based on an output signal of the sensor processed by the lowpass filter, and a unit to prohibit the engine from being started when the remaining amount of the solution is less than a lower limit value.

    摘要翻译： 选择性催化还原系统包括：尿素水溶液罐，用于保持要注入发动机的排气管的尿素水溶液;检测罐中溶液液面高度的液位传感器;具有信号响应特性的低通滤波器 当发动机转速低时时间常数小，并且当发动机转数高时，时间常数相对于传感器的输出信号较大，剩余量指示器指示基于 由低通滤波器处理的传感器的输出信号，以及当溶液的剩余量小于下限值时禁止发动机的单元。