公开(公告)号：US20050003926A1

公开(公告)日：2005-01-06

申请号：US10873233

申请日：2004-06-23

申请人： Kohei Hanada ,  Manabu Niki ,  Masanobu Asakawa ,  Minoru Suzuki ,  Teruo Wakashiro ,  Tomohiro Nishi ,  Takahiro Yonekura

发明人： Kohei Hanada ,  Manabu Niki ,  Masanobu Asakawa ,  Minoru Suzuki ,  Teruo Wakashiro ,  Tomohiro Nishi ,  Takahiro Yonekura

IPC分类号： B60K6/48 ,  B60K6/485 ,  B60K28/06 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60K1/02 ,  F02M23/00

CPC分类号： B60W20/15 ,  B60K6/485 ,  B60L2240/423 ,  B60L2240/486 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60W30/18072 ,  B60W2540/10 ,  B60W2550/12 ,  B60W2710/0605 ,  B60W2710/0666 ,  B60W2710/083 ,  B60W2710/105 ,  Y02T10/6226 ,  Y02T10/6286 ,  Y02T10/642 ,  Y10T477/23

摘要： A control apparatus for a hybrid vehicle which comprises an internal-combustion engine and a motor as a power source, and connects at least one of the internal-combustion engine and the motor to driving wheels of the vehicle through a transmission so as to transmit a driving force to the driving wheels, comprises: a target torque setting device which sets a target torque with respect to a crank end torque, which is a torque at the end of a crank shaft, of the power plant torque output from the power plant being the internal combustion engine and the motor, based on a change of accelerator pedal opening from fully opened to fully closed; and a torque allocation device which allocates the target torque corresponding to the accelerator pedal opening, to an engine torque instruction, being a required value with respect to the output torque from the internal combustion engine, and to a motor torque instruction, being a required value with respect to the output torque from the motor. The generation of torque fluctuations which are not expected by the occupants of the vehicle are suppressed, and a torque which unerringly reflects the driver's intention is output.

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。

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.

公开(公告)号：US07146958B2

公开(公告)日：2006-12-12

申请号：US10880458

申请日：2004-07-01

申请人： Masanobu Asakawa ,  Manabu Niki ,  Kohei Hanada ,  Minoru Suzuki ,  Teruo Wakashiro

发明人： Masanobu Asakawa ,  Manabu Niki ,  Kohei Hanada ,  Minoru Suzuki ,  Teruo Wakashiro

IPC分类号： F02D41/06 ,  B60K6/02

CPC分类号： B60W20/13 ,  B60K6/485 ,  B60L2240/445 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  B60W2510/0614 ,  B60W2510/0676 ,  F02D41/061 ,  F02D41/062 ,  F02D41/086 ,  F02D2041/2031 ,  F02D2200/023 ,  Y02T10/48 ,  Y02T10/6226 ,  Y02T10/6286

摘要： An object is to improve fuel consumption efficiency. Accordingly, a fuel gradual addition delay time when starting (engine water temperature) TMKSTDLYT which changes in a decreasing trend with an increase in the engine water temperature is set (step S10). A fuel gradual addition delay time when starting (state of charge)TMKSTDLYQ which changes in an increasing trend with an increase in the state of charge QBAT is set (step S12 and S14). A fuel gradual addition delay time when starting (vehicle speed) TMKSTDLYV which changes in a decreasing trend with an increase in vehicle speed VP is set (step S13 and S15). Then the greatest value of; the fuel gradual addition delay time when starting (engine water temperature)TMKSTDLYT, the fuel gradual addition delay time when starting (state of charge)TMKSTDLYQ, and the fuel gradual addition delay time when starting (vehicle speed) TMKSTDLYV is set as a fuel gradual addition delay time when starting TMKSTDLY (step S16).

摘要翻译： 目的是提高燃油消耗效率。 因此，设定随着发动机水温上升而发生变化的TMKSTDLYT（发动机水温）变化的燃料逐渐添加延迟时间（步骤S10）。 开始时的燃料逐渐加法延迟时间（充电状态）TMKSTDLYQ随着充电状态QBAT的增加而在增加趋势中变化（步骤S12和S14）。 设定起动时的燃料逐渐追加延迟时间（车速）随着车速VP的增加而以下降趋势变化的TMKSTDLYV（步骤S13和S15）。 那么最大的价值就是 启动时的燃料逐渐添加延迟时间（发动机水温）TMKSTDLYT，启动时的燃料逐渐添加延迟时间（充电状态）TMKSTDLYQ和启动时的燃料逐渐添加延迟时间（车辆速度）TMKSTDLYV被设置为燃料逐渐 启动TMKSTDLY时的加法延迟时间（步骤S16）。

公开(公告)号：US06915782B2

公开(公告)日：2005-07-12

申请号：US10873233

申请日：2004-06-23

申请人： Kohei Hanada ,  Manabu Niki ,  Masanobu Asakawa ,  Minoru Suzuki ,  Teruo Wakashiro ,  Tomohiro Nishi ,  Takahiro Yonekura

发明人： Kohei Hanada ,  Manabu Niki ,  Masanobu Asakawa ,  Minoru Suzuki ,  Teruo Wakashiro ,  Tomohiro Nishi ,  Takahiro Yonekura

IPC分类号： B60K6/48 ,  B60K6/485 ,  B60K28/06 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F02B63/04 ,  B60K5/08

CPC分类号： B60W20/15 ,  B60K6/485 ,  B60L2240/423 ,  B60L2240/486 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60W30/18072 ,  B60W2540/10 ,  B60W2550/12 ,  B60W2710/0605 ,  B60W2710/0666 ,  B60W2710/083 ,  B60W2710/105 ,  Y02T10/6226 ,  Y02T10/6286 ,  Y02T10/642 ,  Y10T477/23

摘要： A control apparatus for a hybrid vehicle which comprises an internal-combustion engine and a motor as a power source, and connects at least one of the internal-combustion engine and the motor to driving wheels of the vehicle through a transmission so as to transmit a driving force to the driving wheels, comprises: a target torque setting device which sets a target torque with respect to a crank end torque, which is a torque at the end of a crank shaft, of the power plant torque output from the power plant being the internal combustion engine and the motor, based on a change of accelerator pedal opening from fully opened to fully closed; and a torque allocation device which allocates the target torque corresponding to the accelerator pedal opening, to an engine torque instruction, being a required value with respect to the output torque from the internal combustion engine, and to a motor torque instruction, being a required value with respect to the output torque from the motor. The generation of torque fluctuations which are not expected by the occupants of the vehicle are suppressed, and a torque which unerringly reflects the driver's intention is output.

摘要翻译： 一种用于混合动力车辆的控制装置，其包括内燃机和电动机作为动力源，并且通过变速器将内燃机和电动机中的至少一个连接到车辆的驱动轮，以便将发动机 驱动轮的驱动力包括：目标扭矩设定装置，其将从发电厂输出的发电厂扭矩相对于作为曲轴末端的转矩的曲柄端扭矩设定为目标转矩， 内燃机和电动机，基于加速踏板开度从全开到全关的变化; 以及转矩分配装置，其将与加速器踏板开度相对应的目标转矩相对于来自内燃机的输出转矩为要求值的发动机扭矩指令和作为所需值的电动机转矩指令 相对于来自电动机的输出转矩。 抑制了车辆乘员不期望的扭矩波动的产生，并且输出了无法反映驾驶者意图的扭矩。

公开(公告)号：US06892128B2

公开(公告)日：2005-05-10

申请号：US10880557

申请日：2004-07-01

申请人： Masanobu Asakawa ,  Manabu Niki ,  Kohei Hanada ,  Minoru Suzuki ,  Teruo Wakashiro

发明人： Masanobu Asakawa ,  Manabu Niki ,  Kohei Hanada ,  Minoru Suzuki ,  Teruo Wakashiro

IPC分类号： B60W20/00 ,  B60K6/485 ,  B60K6/54 ,  B60L11/14 ,  B60L15/20 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60K1/02 ,  G06F7/00

CPC分类号： B60W20/13 ,  B60K6/485 ,  B60L2240/443 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  B60W2510/0657 ,  B60W2540/12 ,  B60W2710/0616 ,  B60W2710/0666 ,  Y02T10/6226 ,  Y02T10/6286 ,  Y02T10/7258 ,  Y10S903/917 ,  Y10T477/23 ,  Y10T477/26

摘要： An FI/AT/MGECU in a control unit calculates an EV travel capable battery terminal discharge power which is the dischargeable power from a battery during EV travel which is travel under the driving force from the motor, according to a state of charge of the battery and a vehicle travelling speed. Based on the calculated EV travel capable battery terminal discharge power and a predetermined limit value, an energy management charge-discharge required battery terminal power is calculated. Then an energy management charge-discharge required torque corresponding to the energy management charge-discharge required battery terminal power, that is the motor torque capable of being output, is calculated based on; a predetermined PDU-MOT overall efficiency efima which is the conversion efficiency of the electric power and the motive power between the power drive unit and the motor, a rotation frequency of the motor, and a predetermined torque limit value for protecting the motor.

摘要翻译： 控制单元中的FI / AT / MGECU根据电池的充电状态来计算作为来自电动机的驱动力的EV行驶期间的来自电池的来自电池的可放电电力的EV行驶式电池终端排出电力 和车辆行驶速度。 基于计算出的具有EV行驶能力的电池端子放电功率和预定极限值，计算出能量管理充电 - 放电所需的电池端子功率。 然后，基于能量管理充放电所需的转矩，对应于能量管理充放电要求的电池端子功率，即能够输出的电动机转矩; 作为电力的转换效率和动力驱动单元与电动机之间的动力，电动机的旋转频率和用于保护电动机的预定转矩极限值的预定PDU-MOT整体效率efima。

公开(公告)号：US06427793B1

公开(公告)日：2002-08-06

申请号：US09634719

申请日：2000-08-07

申请人： Kohei Hanada ,  Masao Kubodera ,  Tetsu Sugiyama

发明人： Kohei Hanada ,  Masao Kubodera ,  Tetsu Sugiyama

IPC分类号： B60K100

CPC分类号： B60W10/06 ,  B60K6/442 ,  B60K6/48 ,  B60K6/543 ,  B60L2240/445 ,  B60W2510/068 ,  B60W2510/244 ,  B60W2540/10 ,  F16H61/66 ,  Y02T10/6221 ,  Y02T10/6234 ,  Y10S903/903 ,  Y10S903/91 ,  Y10S903/918

摘要： 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.

摘要翻译： 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。

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。

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。

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。