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    • 23. 发明授权
    • Air-fuel ratio control system for internal combustion engines
    • 内燃机空燃比控制系统
    • US5845491A
    • 1998-12-08
    • US833131
    • 1997-04-04
    • Yuji YasuiShusuke AkazakiKohei Hanada
    • Yuji YasuiShusuke AkazakiKohei Hanada
    • F02D45/00F01N3/24F02D41/14G05B13/02
    • G05B13/0255F02D41/1403F02D41/1441F02D2041/1409F02D2041/1415F02D2041/1416F02D2041/1418F02D2041/142F02D2041/1426F02D2041/1431F02D2041/1433F02D2250/12F02D41/1402F02D41/1456
    • 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.
    • 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。
    • 26. 发明授权
    • Air-fuel ratio control system for internal combustion engines
    • 内燃机空燃比控制系统
    • US5852930A
    • 1998-12-29
    • US833091
    • 1997-04-04
    • Yuji YasuiShusuke AkazakiKohei Hanada
    • Yuji YasuiShusuke AkazakiKohei Hanada
    • F02D41/14F01N3/00
    • F02D41/1473F02D41/1403F02D41/1441F02D2041/1409F02D2041/1415F02D2041/1416F02D2041/1418F02D2041/142F02D2041/1426F02D2041/1431F02D2041/1433F02D41/1402F02D41/1456
    • 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.
    • 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。
    • 27. 再颁专利
    • Exhaust gas purification system of internal combustion engine
    • USRE43588E1
    • 2012-08-21
    • US10800651
    • 2004-03-16
    • Shusuke AkazakiKohei HanadaYuji YasuiTadashi SatohTakashi Haga
    • Shusuke AkazakiKohei HanadaYuji YasuiTadashi SatohTakashi Haga
    • F02M25/06
    • B01D53/9495B01D53/9445B01D53/9486B01D53/96B01D2253/108B01D2253/3425F01N3/0835F01N3/0871F01N3/0878F01N9/00F01N13/009F01N13/0097F01N2240/36F01N2250/12F01N2370/40F01N2410/00F01N2410/12F02D9/04F02D9/1055F02D21/08F02M26/15F02M26/46F02M26/49Y02T10/20Y02T10/22Y02T10/47
    • 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.
    • 28. 发明授权
    • Catalyst temperature control device for hybrid vehicle
    • 用于混合动力汽车的催化剂温度控制装置
    • US06427793B1
    • 2002-08-06
    • US09634719
    • 2000-08-07
    • Kohei HanadaMasao KuboderaTetsu Sugiyama
    • Kohei HanadaMasao KuboderaTetsu Sugiyama
    • B60K100
    • B60W10/06B60K6/442B60K6/48B60K6/543B60L2240/445B60W2510/068B60W2510/244B60W2540/10F16H61/66Y02T10/6221Y02T10/6234Y10S903/903Y10S903/91Y10S903/918
    • A hybrid vehicle is provided in which even if the temperature of a catalyst is decreased after a long period of travel by means of a motor, the temperature of the catalyst can be increased immediately and the exhaust of harmful materials can be suppressed. A hybrid vehicle having a normal travel mode as a travel mode in which travel is conducted while switching between motor travel and engine travel in accordance with the degree of the depression of an accelerator, comprising: a switching device being capable of switching between the normal travel mode and a specific travel mode in which travel is conducted only by means of an engine irrespective of the degree of the depression of the accelerator; an activity detector for detecting activity of a catalyst provided in the exhaust system of the engine employed in the engine travel; and a determination device for determining whether or not the catalyst is activated; wherein when the determination device determines that the catalyst is not activated, the switching device compels the switching of the travel mode to the specific travel mode engine.
    • 提供了一种混合动力车辆,其中即使通过电动机长时间行驶后催化剂的温度降低,可以立即增加催化剂的温度并且可以抑制有害物质的排放。 1.一种混合动力车辆,其特征在于,具有正常行驶模式作为行驶模式,在所述行驶模式中,根据所述加速器的压下程度,在马达行驶与发动机行驶之间切换的同时进行行驶,所述混合动力车辆包括:能够在所述正常行驶 模式和仅通过发动机进行行驶的具体行驶模式,而与加速器的压下程度无关; 用于检测设置在发动机行驶中使用的发动机的排气系统中的催化剂的活性的活性检测器; 以及用于确定催化剂是否被活化的确定装置; 其中当所述确定装置确定所述催化剂未被激活时,所述切换装置强制将所述行驶模式切换到所述特定行驶模式发动机。
    • 29. 发明授权
    • Exhaust gas purification system of internal combustion engine
    • 内燃机废气净化系统
    • US5946906A
    • 1999-09-07
    • US975101
    • 1997-11-20
    • Shusuke AkazakiKohei HanadaYuji YasuiTadashi SatohTakashi Haga
    • Shusuke AkazakiKohei HanadaYuji YasuiTadashi SatohTakashi Haga
    • F02M25/07B01D53/94F01N3/08F01N3/24F01N9/00F01N13/02F02D9/04F02D21/08F01N3/00
    • B01D53/9495F01N13/009F01N13/0097F01N3/0835F01N3/0871F01N3/0878F01N9/00F02D21/08F02D9/04F02D9/1055F02M26/15B01D2253/108B01D2253/3425B01D53/9445B01D53/9486B01D53/96F01N2240/36F01N2250/12F01N2370/40F01N2410/00F01N2410/12F02M26/46F02M26/49Y02T10/20Y02T10/22Y02T10/47
    • 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.
    • 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。