公开(公告)号：US06427438B1

公开(公告)日：2002-08-06

申请号：US09708707

申请日：2000-11-09

Applicant: Yuji Yasui ,  Yoshikazu Oshima

Inventor： Yuji Yasui ,  Yoshikazu Oshima

IPC: F01N300

CPC classification number: F01N11/00 ,  F01N2550/02 ,  F01N2560/023 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/146 ,  F02D2041/143 ,  Y02T10/47

Abstract: The characteristics of an output of an exhaust gas sensor with respect to an air-fuel ratio of an engine are expressed according to a quadratic function, and the parameters of the quadratic function are sequentially identified according to a sequential identifying algorithm using data of the output of the exhaust gas sensor and data of an output of an air-fuel sensor which detects the air-fuel ratio of the engine. Deterioration evaluating parameters whose values change as the deterioration of a catalytic converter processes are sequentially determined from the identified values of the parameters of the quadratic function, and the deteriorated state of the catalytic converter is evaluated based on the determined deterioration evaluating parameters.

Abstract translation: 排气传感器相对于发动机的空燃比的输出的特性根据二次函数表示，并且根据使用输出数据的顺序识别算法顺序地识别二次函数的参数 的排气传感器和检测发动机的空燃比的空气燃料传感器的输出的数据。 根据确定的二次函数参数的值，依次确定催化剂转化器的劣化值变化的劣化评价参数，根据确定的劣化评价参数来评价催化转化器的劣化状态。

公开(公告)号：US06354076B1

公开(公告)日：2002-03-12

申请号：US09354090

申请日：1999-07-15

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Satoh ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Takashi Haga ,  Tetsuo Endo

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Satoh ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Takashi Haga ,  Tetsuo Endo

IPC: F01N300

CPC classification number: F01N3/0835 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2550/03 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/0422 ,  Y02T10/22 ,  Y02T10/47

Abstract: A system for purifying exhaust gas generated by an internal combustion engine having an adsorbent, installed in an exhaust system of the engine, which adsorbs unburned components of the exhaust gas such as hydrocarbons generated by the engine. The system has a first temperature sensor for detecting a temperature of the adsorbent and timer for measuring a time until the detected temperature becomes greater or equal to a predetermined value, when the measured time is less than a threshold value, it is discriminated that the adsorbent deteriorates. With this, the deterioration of the adsorbent can be discriminated accurately.

Abstract translation: 一种用于净化由具有吸附剂的内燃机产生的废气的系统，其安装在发动机的排气系统中，其吸附由发动机产生的烃类等废气的未燃烧成分。 该系统具有用于检测吸附剂的温度的第一温度传感器和用于测量直到检测到的温度变得大于或等于预定值的时间的计时器，当测量的时间小于阈值时，区分吸附剂 恶化 由此，可以准确地区分吸附剂的劣化。

公开(公告)号：US5983875A

公开(公告)日：1999-11-16

申请号：US139643

申请日：1998-08-25

Applicant: Hiroshi Kitagawa ,  Yuji Yasui ,  Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoshihisa Iwaki

Inventor： Hiroshi Kitagawa ,  Yuji Yasui ,  Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoshihisa Iwaki

IPC: F02D13/02 ,  F02D41/14 ,  G05B13/02 ,  G05B13/04 ,  G05D11/13 ,  F02M25/00

CPC classification number: G05B13/042 ,  F02D41/1402 ,  F02D41/1481 ,  F02D13/0207 ,  F02D13/0257 ,  F02D2041/001 ,  F02D2041/1415 ,  F02D2041/1418 ,  F02D2041/1431 ,  F02D2200/703 ,  F02D41/1441 ,  F02D41/1456

Abstract: A control system for a plant includes a sensor for detecting an output from the plant, an adaptive controller for controlling a manipulated variable applied to control of the plant in a manner such that an output from the sensor becomes equal to a desired value, and an adaptive parameter-adjusting device for adjusting adaptive parameters used by the adaptive controller. The adaptive controller is configured in a manner adapted to a predetermined dead time shorter than an actual dead time which the plant and the detection means possess. Sampling timing of an input vector input to the adaptive parameter-adjusting device corresponds to the actual dead time.

Abstract translation: 一种用于设备的控制系统包括用于检测来自所述设备的输出的传感器，用于以使得所述传感器的输出变为等于所需值的方式控制施加于所述设备的控制的操纵变量的自适应控制器，以及 自适应参数调整装置，用于调整自适应控制器所使用的自适应参数。 自适应控制器被配置为适于比植物和检测装置具有的实际死区时间短的预定死区时间。 输入到自适应参数调整装置的输入矢量的采样定时对应于实际死区时间。

公开(公告)号：US5946906A

公开(公告)日：1999-09-07

申请号：US975101

申请日：1997-11-20

Applicant: Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Tadashi Satoh ,  Takashi Haga

Inventor： Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Tadashi Satoh ,  Takashi Haga

IPC: F02M25/07 ,  B01D53/94 ,  F01N3/08 ,  F01N3/24 ,  F01N9/00 ,  F01N13/02 ,  F02D9/04 ,  F02D21/08 ,  F01N3/00

CPC classification number: B01D53/9495 ,  F01N13/009 ,  F01N13/0097 ,  F01N3/0835 ,  F01N3/0871 ,  F01N3/0878 ,  F01N9/00 ,  F02D21/08 ,  F02D9/04 ,  F02D9/1055 ,  F02M26/15 ,  B01D2253/108 ,  B01D2253/3425 ,  B01D53/9445 ,  B01D53/9486 ,  B01D53/96 ,  F01N2240/36 ,  F01N2250/12 ,  F01N2370/40 ,  F01N2410/00 ,  F01N2410/12 ,  F02M26/46 ,  F02M26/49 ,  Y02T10/20 ,  Y02T10/22 ,  Y02T10/47

Abstract: A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR conduit connected to the bypass at one end and connected to the air intake system for recirculating the exhaust gas to the air intake system. The bypass valve member is opened for a period after engine startup to introduce the exhaust gas such that the adsorber installed in the bypass adsorbs the unburnt HC component in the exhaust gas. The adsorber adsorbs the HC component when the exhaust temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. In the system, the bypass valve is provided at or close to the branching point in the exhaust pipe and a chamber is provided close to the branching point such that the conduit is connected to the bypass at the one end in the chamber. The bypass valve member is combined with an exhaust pipe valve member as a combination valve such that when the bypass valve member closes the bypass, the exhaust pipe valve member opens the exhaust pipe. With the arrangement, the system can effectively prevent the exhaust pipe from being clogged even when a valve for closing a bypass is stuck in the closed position. At the same time, the system can provide a relatively short EGR conduit for recirculating unburnt HC component adsorbed from the adsorber and the adsorption and desorption are conducted optimally.

Abstract translation: 一种用于净化由内燃机产生的废气的系统，所述内燃机包括从催化剂下游的排气管分支出并与排气管并流的旁路，安装在旁路中的吸附器，关闭旁路的旁通阀构件，以及 EGR管道在一端连接到旁路，并连接到进气系统，用于将废气再循环到进气系统。 旁通阀构件在发动机启动后打开一段时间以引入废气，使得安装在旁路中的吸附器吸附废气中的未燃HC组分。 当排气温度升高时，吸附器吸附HC组分，吸附组分通过EGR导管再循环到进气系统。 在该系统中，旁通阀设置在排气管中的分支点处或其附近，并且在靠近分支点设置室，使得导管在腔室的一端连接到旁路。 旁通阀构件与作为组合阀的排气管阀构件组合，使得当旁通阀构件关闭旁路时，排气管阀构件打开排气管。 通过这样的结构，即使关闭旁路的阀卡在闭合位置，也能够有效地防止排气管堵塞。 同时，该系统可以提供相对较短的EGR导管，用于再循环吸附器吸附的未燃烧的HC组分，吸附和解吸是最佳的。

公开(公告)号：US5937638A

公开(公告)日：1999-08-17

申请号：US974505

申请日：1997-11-19

Applicant: Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Yoshikazu Oshima

Inventor： Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Yoshikazu Oshima

IPC: F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F01N13/00 ,  F01N99/00 ,  F02D41/02 ,  F02D41/14 ,  F02D45/00

CPC classification number: F02D41/0235 ,  F01N11/007 ,  F01N13/009 ,  F02D41/1441 ,  F01N2550/02 ,  F02D41/1456 ,  Y02T10/47

Abstract: A deterioration of a catalytic converter for purifying an exhaust gas produced by burning a mixture of a fuel and air in an internal combustion engine, for example, is judged by supplying the exhaust gas to the catalytic converter, detecting the amount of a predetermined component of the exhaust gas which has passed through the catalytic converter with an exhaust gas sensor disposed downstream of the catalytic converter, calculating a target air-fuel ratio for the exhaust gas to be supplied to the catalytic converter for achieving a predetermined emission purifying capability of the catalytic converter based on a detected output signal from the exhaust gas sensor, and judging a deteriorated state of the catalytic converter based on the calculated target air-fuel ratio.

Abstract translation: 例如通过将内燃机的燃料和空气的混合物燃烧而产生的用于净化排气的催化转化器的劣化判定为将催化转化器的排气提供给催化转化器， 通过设置在催化转化器下游的排气传感器通过催化转化器的排气，计算供给到催化转化器的废气的目标空燃比，以实现催化剂的预定排放净化能力 转换器，基于来自排气传感器的检测到的输出信号，并且基于计算出的目标空燃比判断催化转化器的劣化状态。

公开(公告)号：US5850815A

公开(公告)日：1998-12-22

申请号：US834195

申请日：1997-04-15

Applicant: Toru Yano ,  Isao Komoriya ,  Yuji Yasui ,  Takahiro Yonekura ,  Yutaka Asano ,  Yusuke Tatara ,  Eisuke Kimura ,  Kohei Hanada

Inventor： Toru Yano ,  Isao Komoriya ,  Yuji Yasui ,  Takahiro Yonekura ,  Yutaka Asano ,  Yusuke Tatara ,  Eisuke Kimura ,  Kohei Hanada

IPC: F02D13/02 ,  F02D37/02 ,  F02D41/00 ,  F02D41/02 ,  F02D41/12 ,  F02D41/14 ,  F02P5/152 ,  F02P5/00

CPC classification number: F02D13/0207 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/0295 ,  F02D41/126 ,  F02D41/1475 ,  F02D2041/001 ,  F02D2200/0406 ,  F02D2200/0814 ,  Y02T10/18 ,  Y02T10/42

Abstract: A control system is provided in an internal combustion engine in which a valve timing such as an opening time point and lift amount of an intake valve can be switched to a low-speed or high-speed valve timing within a lean-burn control range established in accordance with the operational state, such as an intake pipe internal absolute pressure and an engine revolution number of the engine, wherein an air-fuel ratio of an air-fuel mixture supplied to the internal combustion engine is enriched for a predetermined time when the valve timing is switched from the low-speed valve timing to the high-speed valve timing while carrying out a lean-burn control. Thus, even when the valve timing is switched over to the high-speed valve timing, the lean-burn control is carried out to prevent a misfiring or an unstable combustion state caused when the valve timing is switched during the lean-burn control, thereby providing a reduction in emission and an enhancement in drivability, while enhancing the specific fuel consumption.

Abstract translation: 在内燃机中设置有控制系统，其中诸如打开时间点和进气门升程量的气门正时切换到建立的稀燃控制范围内的低速或高速气门正时 根据作业状态，例如进气管内部绝对压力和发动机的转速，其中供给内燃机的空气燃料混合物的空燃比富集预定时间 在进行稀燃控制的同时，从低速气门正时切换到高速气门正时。 因此，即使当阀正时切换到高速气门正时时，进行稀燃控制，以防止在稀燃控制期间切换阀正时时引起的失火或不稳定的燃烧状态，由此 提供减少排放和提高驾驶性能，同时提高燃油消耗。

公开(公告)号：US5845490A

公开(公告)日：1998-12-08

申请号：US833092

申请日：1997-04-04

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

IPC: F02D45/00 ,  F01N3/24 ,  F02D41/14 ,  G05B13/02

CPC classification number: F02D41/1441 ,  F02D41/1403 ,  G05B13/0255 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D41/1402 ,  F02D41/1456

Abstract: An air-fuel control system for use with an internal combustion engine has a catalytic converter, a first exhaust gas sensor, and a second exhaust gas sensor. A sliding mode controller determines a correction quantity to equalize the concentration of the component downstream of the catalytic converter to a predetermined appropriate value based on the output from the second exhaust gas sensor. A feedback controller determines a correction quantity to converge the concentration of the component downstream of the catalytic converter toward the predetermined appropriate value, and feed-back controls the rate at which fuel is supplied to the engine with the determined correction quantity. The sliding mode controller has a hyperplane setting unit for establishing a hyperplane for the sliding mode control process with a linear function having as variables a plurality of quantities of the exhaust system which include at least the concentration, detected by the second exhaust gas sensor, of the component of the exhaust gas downstream of the catalytic converter and a rate of change of the concentration, and a calculator for determining the correction quantity to correct the air-fuel ratio of the internal combustion engine so as to converge the state quantities onto the established hyperplane and also to converge the state quantities toward a balanced point on the established hyperplane while converging the state quantities onto the hyperplane. The hyperplane setting unit variably establishes the hyperplane depending on the manner in which the state quantities converge onto the hyperplane.

Abstract translation: 一种与内燃机一起使用的空燃控制系统具有催化转化器，第一废气传感器和第二废气传感器。 滑动模式控制器基于来自第二排气传感器的输出，确定校正量以使催化转化器下游的组分的浓度相等于预定的适当值。 反馈控制器确定校正量以使催化转化器下游的部件的浓度朝向预定的适当值收敛，并且反馈控制以确定的校正量向发动机供应燃料的速率。 滑动模式控制器具有超平面设置单元，用于为滑模模式控制过程建立超平面，其中线性函数具有作为变量的多个排气系统的数量，排气系统至少包括由第二排气传感器检测的浓度 催化转化器下游的废气的成分和浓度的变化率;以及计算器，用于确定校正量，以校正内燃机的空燃比，以将状态量收敛到已建立的 并且还将状态量收敛到建立的超平面上的平衡点，同时将状态量收敛到超平面上。 超平面设置单元根据状态量收敛到超平面上的方式，可变地建立超平面。