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1. 发明授权

US5924281A Air-fuel ratio control system for internal combustion engines 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5924281A
公开(公告)日：1999-07-20
申请号：US835192
申请日：1997-04-04
申请人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
发明人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
IPC分类号： F02D45/00 , F01N3/24 , F02D41/14 , G05B13/04 , F01N3/00
CPC分类号： G05B13/047 , F02D41/1403 , F02D41/1441 , F02D41/1473 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1423 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/1402 , F02D41/1456
摘要： An air-fuel control system for use with an internal combustion engine has a catalytic converter disposed in an exhaust system of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, a second exhaust gas sensor in the exhaust system for detecting the concentration of a component of the exhaust gas which has passed through the catalytic converter, downstream of the catalytic converter, and a correction quantity calculator for determining a correction quantity to correct an air-fuel ratio of the engine based on an output from the second exhaust gas sensor so as to equalize the concentration of the component of the exhaust gas downstream of the catalytic converter to a predetermined appropriate value. The air-fuel ratio of the engine is controlled based on the determined correction quantity and an output from the first exhaust gas sensor so as to converge the concentration of the component toward the predetermined appropriate value. A state predictor estimates the concentration of the component, detected by the second exhaust gas sensor, after a dead time present in an exhaust system including the catalytic converter between the first and second exhaust gas sensors, based on outputs up to present from the first and second exhaust gas sensors. The correction quantity calculator determines the air-fuel ratio of the engine so as to equalize the concentration of the component to the predetermined appropriate value, based on the estimated concentration of the component.
摘要翻译：一种与内燃机一起使用的空燃控制系统具有：催化转化器，其设置在发动机的排气系统中，用于净化从发动机排出的排气;排气系统中的第一排气传感器，催化转化器上游的废气的燃料比，用于检测已经通过催化转化器的排气的成分浓度的排气系统中的第二废气传感器，以及催化转化器的下游的校正量计算器，用于基于来自第二排气传感器的输出确定校正量以校正发动机的空燃比，以将催化转化器下游的排气的成分的浓度均匀化到预定的适当值。基于所确定的校正量和来自第一排气传感器的输出来控制发动机的空燃比，以将部件的浓度朝向预定的适当值收敛。状态预测器基于从第一和第二废气传感器到目前的输出，在包括第一和第二废气传感器之间的催化转化器的排气系统中存在的死区时间之后，估计由第二废气传感器检测到的部件的浓度，第二排气传感器。校正量计算器基于所估计的组分浓度，确定发动机的空燃比，以将组分的浓度与预定的适当值相等。

2. 再颁专利

USRE42056E1 Exhaust gas purification system of internal combustion engine 有权
标题翻译：内燃机废气净化系统
公开(公告)号：USRE42056E1
公开(公告)日：2011-01-25
申请号：US09945835
申请日：2001-09-05
申请人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Tadashi Satoh , Takashi Haga
发明人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Tadashi Satoh , Takashi Haga
IPC分类号： F02M25/06
CPC分类号： B01D53/9495 , B01D53/9445 , B01D53/9486 , B01D53/96 , B01D2253/108 , B01D2253/3425 , F01N3/0835 , F01N3/0871 , F01N3/0878 , F01N9/00 , F01N13/009 , F01N13/0097 , F01N2240/36 , F01N2250/12 , F01N2370/40 , F01N2410/00 , F01N2410/12 , F02D9/04 , F02D9/1055 , F02D21/08 , F02M26/15 , F02M26/46 , F02M26/49 , Y02T10/20 , Y02T10/22 , Y02T10/47
摘要： 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.
摘要翻译：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。

3. 发明授权

US5880952A Sliding mode control method 失效
标题翻译：滑模控制方式
公开(公告)号：US5880952A
公开(公告)日：1999-03-09
申请号：US834510
申请日：1997-04-04
申请人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
发明人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
IPC分类号： F02D41/14 , G05B13/00 , G05B13/02
CPC分类号： F02D41/1403 , G05B13/0255 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/1402
摘要： According to a sliding mode control method, a hyperplane for a sliding mode control process is established with a linear function having as variables a plurality of state quantities of an object to be controlled. The state quantities are converged onto the hyperplane, and also converged toward a balanced point on the hyperplane while the state quantities are being converged onto the hyperplane, thereby to control the state quantities at target state quantities represented by the balanced point. The hyperplane are variably established depending on the manner in which the state quantities are converged onto the hyperplane.
摘要翻译：根据滑动模式控制方法，利用线性函数建立用于滑动模式控制处理的超平面，该线性函数具有要被控制的对象的多个状态量的变量。状态量收敛在超平面上，并且在状态量正在会聚到超平面上时也朝着超平面上的平衡点收敛，由此控制由平衡点表示的目标状态量处的状态量。超平面根据状态量收敛到超平面上的方式可变地建立。

4. 发明授权

US5845491A Air-fuel ratio control system for internal combustion engines 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5845491A
公开(公告)日：1998-12-08
申请号：US833131
申请日：1997-04-04
申请人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
发明人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
IPC分类号： F02D45/00 , F01N3/24 , F02D41/14 , G05B13/02
CPC分类号： G05B13/0255 , F02D41/1403 , F02D41/1441 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D2250/12 , F02D41/1402 , F02D41/1456
摘要： An air-fuel control system for use with an internal combustion engine has a catalytic converter in an exhaust system of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, and a second exhaust gas sensor in the exhaust system for detecting the concentration of a component of the exhaust gas which has passed through the catalytic converter, downstream of the catalytic converter. A sliding mode controller determines a correction quantity at a first period to correct the air-fuel ratio of the engine so as to equalize the concentration of the component downstream of the catalytic converter to a predetermined appropriate value, according to a sliding mode control process based on the output from the second exhaust gas sensor. A feedback controller determines a correction quantity at a second period for a rate at which fuel is supplied to the engine so as to converge the concentration of the component downstream of the catalytic converter toward the predetermined appropriate value, based on the correction quantity to correct the air-fuel ratio and the output from the first exhaust gas sensor, and feedback-controls the rate at which fuel is supplied to the engine with the determined correction quantity. The first and second periods are established separately from each other.
摘要翻译：一种与内燃机一起使用的空气燃料控制系统，在发动机的排气系统中具有催化转化器，用于净化从发动机排出的废气，用于检测空气燃料的排气系统中的第一废气传感器催化转化器上游排气的比例和排气系统中的第二废气传感器，用于检测催化转化器下游已经通过催化转化器的废气的组分浓度。滑动模式控制器在第一时段确定校正量，以校正发动机的空燃比，以使催化转化器下游的组分的浓度相等于预定的适当值，根据滑动模式控制过程为基础在第二排气传感器的输出上。反馈控制器基于校正量确定燃料被提供给发动机的速率的第二时间段的校正量，以便将催化转化器下游的组分的浓度朝向预定的适当值收敛，以校正空燃比和第一废气传感器的输出，并且以确定的校正量反馈控制向发动机供应燃料的速率。第一和第二个时期是彼此分开建立的。

5. 发明授权

US5852930A Air-fuel ratio control system for internal combustion engines 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5852930A
公开(公告)日：1998-12-29
申请号：US833091
申请日：1997-04-04
申请人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
发明人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
IPC分类号： F02D41/14 , F01N3/00
CPC分类号： F02D41/1473 , F02D41/1403 , F02D41/1441 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/1402 , F02D41/1456
摘要： An air-fuel control system for use with an internal combustion engine has a catalytic converter disposed in an exhaust system of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor disposed in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, a second exhaust gas sensor disposed in the exhaust system for detecting the concentration of a component of the exhaust gas which has passed through the catalytic converter, downstream of the catalytic converter, and a control unit for controlling an air-fuel ratio of the engine based on outputs from the first exhaust gas sensor and the second exhaust gas sensor. The control unit includes an adaptive sliding mode controller for determining a correction quantity to correct the air-fuel ratio of the engine so as to equalize the concentration of the component of the exhaust gas downstream of the catalytic converter to a predetermined appropriate value, according to an adaptive sliding mode control process based on the output from the second exhaust gas sensor, and a feedback controller for controlling a rate at which fuel is supplied to the engine so as to converge the concentration of the component of the exhaust gas downstream of the catalytic converter toward the predetermined appropriate value, based on the correction quantity and the output from the first exhaust gas sensor.
摘要翻译：一种与内燃机一起使用的空气燃料控制系统，具有设置在发动机的排气系统中的用于净化从发动机排出的排气的催化转化器，设置在排气系统中的第一排气传感器，用于检测空气 - 催化转化器上游排气的燃料比，设置在排气系统中的第二废气传感器，用于检测通过催化转化器的排气的成分浓度，催化转化器的下游，以及控制单元，用于基于来自第一排气传感器和第二排气传感器的输出来控制发动机的空燃比。控制单元包括自适应滑动模式控制器，用于确定校正量以校正发动机的空燃比，以便将催化转化器下游的排气的分量的浓度相等到预定的适当值，根据基于来自第二废气传感器的输出的自适应滑动模式控制过程和用于控制向发动机供应燃料的速率的反馈控制器，以使催化剂下游的排气的组分的浓度转换器基于校正量和来自第一废气传感器的输出而朝向预定的适当值。

6. 再颁专利

USRE43588E1 Exhaust gas purification system of internal combustion engine 有权
公开(公告)号：USRE43588E1
公开(公告)日：2012-08-21
申请号：US10800651
申请日：2004-03-16
申请人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Tadashi Satoh , Takashi Haga
发明人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Tadashi Satoh , Takashi Haga
IPC分类号： F02M25/06
CPC分类号： B01D53/9495 , B01D53/9445 , B01D53/9486 , B01D53/96 , B01D2253/108 , B01D2253/3425 , F01N3/0835 , F01N3/0871 , F01N3/0878 , F01N9/00 , F01N13/009 , F01N13/0097 , F01N2240/36 , F01N2250/12 , F01N2370/40 , F01N2410/00 , F01N2410/12 , F02D9/04 , F02D9/1055 , F02D21/08 , F02M26/15 , F02M26/46 , F02M26/49 , Y02T10/20 , Y02T10/22 , Y02T10/47
摘要： 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. 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 adsorber adsorbs the HC component in the exhaust gas when the exhaust gas temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. The bypass valve member is combined with an exhaust pipe vale member as a combination valve such that when the bypass valve member closes the bypass, the exhaust pipe valve member opens the exhaust pipe.

7. 发明授权

US5946906A Exhaust gas purification system of internal combustion engine 失效
标题翻译：内燃机废气净化系统
公开(公告)号：US5946906A
公开(公告)日：1999-09-07
申请号：US975101
申请日：1997-11-20
申请人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Tadashi Satoh , Takashi Haga
发明人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Tadashi Satoh , Takashi Haga
IPC分类号： F02M25/07 , B01D53/94 , F01N3/08 , F01N3/24 , F01N9/00 , F01N13/02 , F02D9/04 , F02D21/08 , F01N3/00
CPC分类号： 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
摘要： 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.
摘要翻译：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。

8. 发明授权

US5937638A Method of judging deterioration of catalytic converter for purifying exhaust gas 失效
标题翻译：判断用于净化废气的催化转化器的劣化的方法
公开(公告)号：US5937638A
公开(公告)日：1999-08-17
申请号：US974505
申请日：1997-11-19
申请人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Yoshikazu Oshima
发明人： Shusuke Akazaki , Kohei Hanada , Yuji Yasui , Yoshikazu Oshima
IPC分类号： F01N3/20 , F01N3/24 , F01N11/00 , F01N13/00 , F01N99/00 , F02D41/02 , F02D41/14 , F02D45/00
CPC分类号： F02D41/0235 , F01N11/007 , F01N13/009 , F02D41/1441 , F01N2550/02 , F02D41/1456 , Y02T10/47
摘要： 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.
摘要翻译：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。

9. 发明授权

US5845490A Air-fuel ratio control system for internal combustion engines 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5845490A
公开(公告)日：1998-12-08
申请号：US833092
申请日：1997-04-04
申请人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
发明人： Yuji Yasui , Shusuke Akazaki , Kohei Hanada
IPC分类号： F02D45/00 , F01N3/24 , F02D41/14 , G05B13/02
CPC分类号： 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
摘要： 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.
摘要翻译：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。

10. 发明授权

US5850815A Control system and control process in internal combustion engine 失效
标题翻译：内燃机控制系统及控制过程
公开(公告)号：US5850815A
公开(公告)日：1998-12-22
申请号：US834195
申请日：1997-04-15
申请人： Toru Yano , Isao Komoriya , Yuji Yasui , Takahiro Yonekura , Yutaka Asano , Yusuke Tatara , Eisuke Kimura , Kohei Hanada
发明人： Toru Yano , Isao Komoriya , Yuji Yasui , Takahiro Yonekura , Yutaka Asano , Yusuke Tatara , Eisuke Kimura , Kohei Hanada
IPC分类号： F02D13/02 , F02D37/02 , F02D41/00 , F02D41/02 , F02D41/12 , F02D41/14 , F02P5/152 , F02P5/00
CPC分类号： F02D13/0207 , F02D37/02 , F02D41/0002 , F02D41/0295 , F02D41/126 , F02D41/1475 , F02D2041/001 , F02D2200/0406 , F02D2200/0814 , Y02T10/18 , Y02T10/42
摘要： 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.
摘要翻译：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。

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