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    • 2. 发明授权
    • Air-fuel ratio control device
    • 空燃比控制装置
    • US08607545B2
    • 2013-12-17
    • US13357221
    • 2012-01-24
    • Yoshiyuki OotakeYasuji IshizukaMasaki Koga
    • Yoshiyuki OotakeYasuji IshizukaMasaki Koga
    • F01N3/20
    • F02D41/1441F01N3/2006F01N13/009F01N13/0093F01N2410/02F02D41/0255Y02T10/26
    • An air-fuel ratio control device is provided for controlling the air-fuel ratio of an engine. The device includes an exhaust passage having a main catalytic converter and a bypass passage having a bypass catalytic converter, the bypass passage diverging from the exhaust passage at an upstream junction and rejoining the exhaust passage at a downstream junction. A valve mechanism disposed in the exhaust passage between the upstream junction and the downstream junction moves between a closed state and an open state. During a predetermined period of time after the valve mechanism opens to permit flow in the exhaust passage, the air-fuel ratio of the engine is controlled based on a signal from a first air-fuel ratio sensor in the bypass passage using a low response correction value that is less than a normal response correction value that would be used when the valve mechanism is closed.
    • 提供了一种用于控制发动机的空燃比的空燃比控制装置。 该装置包括具有主催化转化器和具有旁通催化转化器的旁通通道的排气通道,旁通通道在上游接合处从排气通道发散并在下游接合处重新连接排气通道。 设置在上游接头和下游接头之间的排气通道中的阀机构在关闭状态和打开状态之间移动。 在阀机构打开以允许在排气通道中流动之后的预定时间段内,基于来自旁路通道中的第一空燃比传感器的信号,使用低响应校正来控制发动机的空燃比 值小于在阀机构关闭时将使用的正常响应校正值。
    • 3. 发明申请
    • AIR-FUEL RATIO CONTROL DEVICE
    • 空燃比比控制装置
    • US20120117950A1
    • 2012-05-17
    • US13357221
    • 2012-01-24
    • Yoshiyuki OotakeYasuji IshizukaMasaki Koga
    • Yoshiyuki OotakeYasuji IshizukaMasaki Koga
    • F01N9/00F01N3/18
    • F02D41/1441F01N3/2006F01N13/009F01N13/0093F01N2410/02F02D41/0255Y02T10/26
    • An air-fuel ratio control device is provided for controlling the air-fuel ratio of an engine. The device includes an exhaust passage having a main catalytic converter and a bypass passage having a bypass catalytic converter, the bypass passage diverging from the exhaust passage at an upstream junction and rejoining the exhaust passage at a downstream junction. A valve mechanism disposed in the exhaust passage between the upstream junction and the downstream junction moves between a closed state and an open state. During a predetermined period of time after the valve mechanism opens to permit flow in the exhaust passage, the air-fuel ratio of the engine is controlled based on a signal from a first air-fuel ratio sensor in the bypass passage using a low response correction value that is less than a normal response correction value that would be used when the valve mechanism is closed.
    • 提供了一种用于控制发动机的空燃比的空燃比控制装置。 该装置包括具有主催化转化器和具有旁通催化转化器的旁通通道的排气通道,旁通通道在上游接合处从排气通道发散并在下游接合处重新连接排气通道。 设置在上游接头和下游接头之间的排气通道中的阀机构在关闭状态和打开状态之间移动。 在阀机构打开以允许在排气通道中流动之后的预定时间段内,基于来自旁路通道中的第一空燃比传感器的信号,使用低响应校正来控制发动机的空燃比 值小于在阀机构关闭时将使用的正常响应校正值。
    • 4. 发明授权
    • Air-fuel ratio control device
    • 空燃比控制装置
    • US08176728B2
    • 2012-05-15
    • US12183495
    • 2008-07-31
    • Yoshiyuki OotakeYasuji IshizukaMasaki Koga
    • Yoshiyuki OotakeYasuji IshizukaMasaki Koga
    • F01N3/20
    • F02D41/1441F01N3/2006F01N13/009F01N13/0093F01N2410/02F02D41/0255Y02T10/26
    • An air-fuel ratio control device is provided for controlling the air-fuel ratio of an engine. The device includes an exhaust passage having a main catalytic converter and a bypass passage having a bypass catalytic converter, the bypass passage diverging from the exhaust passage at an upstream junction and rejoining the exhaust passage at a downstream junction. A valve mechanism disposed in the exhaust passage between the upstream junction and the downstream junction moves between a closed state and an open state. During a predetermined period of time after the valve mechanism opens to permit flow in the exhaust passage, the air-fuel ratio of the engine is controlled based on a signal from a first air-fuel ratio sensor in the bypass passage using a low response correction value that is less than a normal response correction value that would be used when the valve mechanism is closed.
    • 提供了一种用于控制发动机的空燃比的空燃比控制装置。 该装置包括具有主催化转化器和具有旁通催化转化器的旁通通道的排气通道,旁通通道在上游接合处从排气通道发散并在下游接合处重新连接排气通道。 设置在上游接头和下游接头之间的排气通道中的阀机构在关闭状态和打开状态之间移动。 在阀机构打开以允许在排气通道中流动之后的预定时间段内,基于来自旁路通道中的第一空燃比传感器的信号,使用低响应校正来控制发动机的空燃比 值小于在阀机构关闭时将使用的正常响应校正值。
    • 5. 发明授权
    • Air-fuel ratio control apparatus
    • 空燃比控制装置
    • US08141343B2
    • 2012-03-27
    • US11961049
    • 2007-12-20
    • Hiroyuki NagaiYoshiyuki OotakeYasuji IshizukaMasaki Koga
    • Hiroyuki NagaiYoshiyuki OotakeYasuji IshizukaMasaki Koga
    • F01N3/00
    • F02D41/1441F01N3/2006F01N3/2053F01N13/0093F01N2410/02F02D41/022F02D41/0235F02D41/045F02D41/1456F02D41/1488F02D41/1494Y02T10/26
    • An air-fuel ratio control apparatus is basically provided with an exhaust system, a pair of sensors and a controller. The exhaust system includes an exhaust channel having a main catalytic converter, a bypass channel having a bypass catalytic converter, and a valve mechanism disposed in the exhaust channel to switch a pathway for exhaust gas from the exhaust channel to the bypass channel. The sensors output signals indicative of air-fuel ratios of exhaust flowing in their respective channels. The controller has first and second air-fuel ratio control sections that control an engine air-fuel ratio based on outputs of the sensors, respectively. The controller has a control mode switching section that switches control from the first air-fuel ratio control section to the second air-fuel ratio control section after a prescribed interval of time has elapsed from when the valve mechanism is switched from a closed state to an open state.
    • 空燃比控制装置基本上设置有排气系统,一对传感器和控制器。 排气系统包括具有主催化转化器,旁通催化转化器的旁通通道和设置在排气通道中的阀机构的排气通道,用于将排气通道的路径从排气通道切换到旁通通道。 传感器输出表示在其各自通道中流动的排气的空燃比的信号。 控制器具有分别基于传感器的输出来控制发动机空燃比的第一和第二空燃比控制部。 控制器具有控制模式切换部,该控制模式切换部在从阀机构从关闭状态切换到停止状态经过规定的时间间隔后,将控制从第一空燃比控制部切换到第二空燃比控制部 打开状态。
    • 6. 发明申请
    • AIR-FUEL RATIO CONTROL DEVICE
    • 空燃比比控制装置
    • US20090043481A1
    • 2009-02-12
    • US12183495
    • 2008-07-31
    • Yoshiyuki OOTAKEYasuji IshizukaMasaki Koga
    • Yoshiyuki OOTAKEYasuji IshizukaMasaki Koga
    • F02D41/00
    • F02D41/1441F01N3/2006F01N13/009F01N13/0093F01N2410/02F02D41/0255Y02T10/26
    • An air-fuel ratio control device is provided for controlling the air-fuel ratio of an engine. The device includes an exhaust passage having a main catalytic converter and a bypass passage having a bypass catalytic converter, the bypass passage diverging from the exhaust passage at an upstream junction and rejoining the exhaust passage at a downstream junction. A valve mechanism disposed in the exhaust passage between the upstream junction and the downstream junction moves between a closed state and an open state. During a predetermined period of time after the valve mechanism opens to permit flow in the exhaust passage, the air-fuel ratio of the engine is controlled based on a signal from a first air-fuel ratio sensor in the bypass passage using a low response correction value that is less than a normal response correction value that would be used when the valve mechanism is closed.
    • 提供了一种用于控制发动机的空燃比的空燃比控制装置。 该装置包括具有主催化转化器和具有旁通催化转化器的旁通通道的排气通道,旁通通道在上游接合处从排气通道发散并在下游接合处重新连接排气通道。 设置在上游接头和下游接头之间的排气通道中的阀机构在关闭状态和打开状态之间移动。 在阀机构打开以允许在排气通道中流动之后的预定时间段内,基于来自旁路通道中的第一空燃比传感器的信号,使用低响应校正来控制发动机的空燃比 值小于在阀机构关闭时将使用的正常响应校正值。
    • 9. 发明授权
    • Engine idle speed control device
    • 发动机怠速控制装置
    • US07169078B2
    • 2007-01-30
    • US11066257
    • 2005-02-28
    • Tsuyoshi IshikawaEri ImaiMasaki Koga
    • Tsuyoshi IshikawaEri ImaiMasaki Koga
    • F16H59/74
    • F02D31/003B60W2710/065F02D41/0215F02D2250/26F02D2400/12F02P5/1504F02P5/1508F16H59/72F16H2061/0488Y02T10/46Y10T477/67
    • An engine idle speed control device set a target idle speed NsetN for a non-traveling range is set to a high value to activate the catalytic converter early, after the engine is started. Upon detecting that the automatic transmission has been shifted from a non-traveling range to a traveling range, the target idle speed is lowered to a first traveling idle speed Nset1. A feedback gain G used for feedback control of the ignition timing is then set to a larger gain value. The larger gain value is set such that it varies based on the temperature of the automatic transmission fluid or other parameter indicative of the engine friction and/or automatic transmission friction. As a result, the ignition timing is retarded in a precise manner, the engine speed is reduced, and the clutch engagement shock is reduced.
    • 发动机怠速控制装置将用于非行驶范围的目标怠速转速NsetN设定为高值,以在发动机启动后尽早地启动催化转化器。 当检测到自动变速器已经从非行驶范围转移到行驶范围时,目标怠速降低到第一行驶空转速度Nset 1。 然后将用于点火正时反馈控制的反馈增益G设置为较大的增益值。 较大的增益值被设定为使得其基于自动变速器油的温度或指示发动机摩擦和/或自动变速器摩擦的其它参数而变化。 结果,点火正时被精确地延迟,发动机转速降低,离合器接合冲击降低。