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公开(公告)号：US10337422B2
公开(公告)日：2019-07-02
申请号：US15845447
申请日：2017-12-18
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Takanobu Hosoya , Yasuyuki Irisawa , Hirofumi Kubota , Takashi Tsunooka
Abstract: A control apparatus for an internal combustion engine includes a turbocharger, a bypass passage, a waste gate valve, a turbo bypass valve, an air-fuel ratio sensor and an electronic control unit. The air-fuel ratio sensor is provided in an exhaust passage downstream of a merging point at which the bypass passage merges with the exhaust passage. The electronic control unit is configured to, when a predetermined acceleration request is established and a required opening degree of the turbo bypass valve is larger than a predetermined reference opening degree, execute air-fuel ratio control for changing an air-fuel ratio of exhaust gas from the internal combustion engine for a predetermined first period, and close the waste gate valve based on a convergence status of detected air-fuel ratio fluctuations. The detected air-fuel ratio fluctuations are fluctuations in air-fuel ratio that is detected by the air-fuel ratio sensor resulting from the air-fuel ratio control.
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公开(公告)号：US10006382B2
公开(公告)日：2018-06-26
申请号：US14441555
申请日：2013-12-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , Takashi Tsunooka , Wataru Fukui
Inventor： Takashi Tsunooka , Wataru Fukui
CPC classification number: F02D41/0007 , F02B37/18 , F02B37/183 , F02D41/0085 , F02D41/1456 , Y02T10/144
Abstract: An apparatus for detecting inter-cylinder air-fuel ratio imbalance in an engine is provided. The apparatus includes a turbocharger, a bypass passage configured to bypass a turbine of the turbocharger, a waste gate valve configured to selectively close the bypass passage, an air-fuel ratio sensor installed in a portion of an exhaust passage which portion is located on a downstream side of a junction between a downstream side of the turbine and a downstream side of the bypass passage, and a determination unit programmed to compare a value of a degree of fluctuation in an output from the air-fuel ratio sensor or a parameter correlated therewith with a predetermined threshold to perform inter-cylinder air-fuel ratio imbalance determination. The determination unit is programmed not to perform the imbalance determination when an opening degree of the waste gate valve is equal to or higher than a predetermined reference value.
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公开(公告)号：US10519851B2
公开(公告)日：2019-12-31
申请号：US16048978
申请日：2018-07-30
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Akitoshi Iwata , Takashi Tsunooka
Abstract: A turbocharger includes a turbine housing and a wastegate. The turbine housing has an accommodation space, is which a turbine wheel is accommodated. The accommodation space is connected to a scroll passage, which draws exhaust gas from the outside of the turbine housing, and a connection passage, which discharges exhaust gas from the accommodation space. The connection passage is connected to a merging passage, which discharges exhaust gas to the outside of the turbine housing. The merging passage is connected to a bypass passage, which bypasses the accommodation space. The central axis of an outlet portion of the connection passage is inclined with respect to the rotation axis of the turbine wheel toward the side on which an outlet portion of the bypass passage is located.
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公开(公告)号：US20180119606A1
公开(公告)日：2018-05-03
申请号：US15729132
申请日：2017-10-10
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Takanobu Hosoya , Yasuyuki Irisawa , Hirofumi Kubota , Takashi Tsunooka
CPC classification number: F02B37/18 , F01N3/2006 , F01N9/00 , F01N11/002 , F01N2240/20 , F01N2340/06 , F01N2410/00 , F01N2410/06 , F01N2900/08 , F01N2900/1404 , F01N2900/1602 , F01N2900/1626 , F02B37/183 , Y02T10/144 , Y02T10/47
Abstract: A warm-up system for an exhaust gas apparatus includes the exhaust gas apparatus having a turbocharger provided with a turbine, a first exhaust gas control catalyst provided downstream of the turbine, a bypass passage bypassing the turbine, and an adjustment unit adjusting a turbine inflow exhaust gas flow rate and an electronic control unit. The electronic control unit is configured to perform a warm-up control which warms the turbine by controlling the turbine inflow exhaust gas flow rate, by using the adjustment unit, to reach a flow rate higher than zero and lower than the post-warm-up flow rate when an operating state of the internal combustion engine remains constant, such that a warmed state of the first exhaust gas control catalyst is maintained after the first exhaust gas control catalyst is warmed.
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5.发明申请公开(公告)号：US20150292422A1
公开(公告)日：2015-10-15
申请号：US14441555
申请日：2013-12-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takashi Tsunooka , Wataru Fukui
CPC classification number: F02D41/0007 , F02B37/18 , F02B37/183 , F02D41/0085 , F02D41/1456 , Y02T10/144
Abstract: An apparatus for detecting inter-cylinder air-fuel ratio imbalance in an engine is provided. The apparatus includes a turbocharger, a bypass passage configured to bypass a turbine of the turbocharger, a waste gate valve configured to selectively close the bypass passage, an air-fuel ratio sensor installed in a portion of an exhaust passage which portion is located on a downstream side of a junction between a downstream side of the turbine and a downstream side of the bypass passage, and a determination unit programmed to compare a value of a degree of fluctuation in an output from the air-fuel ratio sensor or a parameter correlated therewith with a predetermined threshold to perform inter-cylinder air-fuel ratio imbalance determination. The determination unit is programmed not to perform the imbalance determination when an opening degree of the waste gate valve is equal to or higher than a predetermined reference value.
Abstract translation: 提供一种用于检测发动机中的缸内空燃比不平衡的装置。 该装置包括涡轮增压器，旁通通道，其构造成绕过涡轮增压器的涡轮，构造成选择性地关闭旁通通道的废气门阀，安装在排气通道的该部分位于其上的部分的空燃比传感器 在涡轮机的下游侧和旁路通路的下游侧的接合部的下游侧，以及被编程为比较来自空燃比传感器的输出的变动程度的值或与其相关的参数的判定单元 具有预定阈值以执行缸间空燃比不平衡确定。 当废门阀的开度等于或高于预定参考值时，确定单元被编程为不执行不平衡确定。
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Patent Agency Ranking
公开(公告)号：US20180179966A1
公开(公告)日：2018-06-28
申请号：US15845447
申请日：2017-12-18
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Takanobu Hosoya , Yasuyuki Irisawa , Hirofumi Kubota , Takashi Tsunooka
CPC classification number: F02D41/0007 , F02B37/183 , F02D41/1439 , F02D41/1454 , F02D41/1495 , F02D41/221 , Y02T10/144 , Y02T10/40
Abstract: A control apparatus for an internal combustion engine includes a turbocharger, a bypass passage, a waste gate valve, a turbo bypass valve, an air-fuel ratio sensor and an electronic control unit. The air-fuel ratio sensor is provided in an exhaust passage downstream of a merging point at which the bypass passage merges with the exhaust passage. The electronic control unit is configured to, when a predetermined acceleration request is established and a required opening degree of the turbo bypass valve is larger than a predetermined reference opening degree, execute air-fuel ratio control for changing an air-fuel ratio of exhaust gas from the internal combustion engine for a predetermined first period, and close the waste gate valve based on a convergence status of detected air-fuel ratio fluctuations. The detected air-fuel ratio fluctuations are fluctuations in air-fuel ratio that is detected by the air-fuel ratio sensor resulting from the air-fuel ratio control.
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公开(公告)号：US20180128193A1
公开(公告)日：2018-05-10
申请号：US15808172
申请日：2017-11-09
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Takanobu Hosoya , Yasuyuki Irisawa , Hirofumi Kubota , Takashi Tsunooka
CPC classification number: F02D41/0007 , F02B37/183 , F02B37/22 , F02D9/02 , F02D41/10 , F02D2200/0406 , F02D2200/1002 , F02D2200/602 , Y02T10/144
Abstract: A control system for an internal combustion engine includes an exhaust gas passage, an intake passage, a turbocharger, a bypass passage, a waste gate valve, a turbo bypass valve, a throttle valve, and an electronic control unit. The electronic control unit is configured to control the waste gate valve, the turbo bypass valve, and the throttle valve such that the order of execution of the throttle opening degree increase control and the turbo bypass valve opening degree increase control and the waste gate valve opening degree decrease control is changed depending on the engine load at a point in time when the operation state of the internal combustion engine belongs to the natural aspiration region when the predetermined acceleration request is present.
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公开(公告)号：US10830167B2
公开(公告)日：2020-11-10
申请号：US15982327
申请日：2018-05-17
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Koichi Kitaura , Yasuyuki Irisawa , Hirofumi Kubota , Takashi Tsunooka
IPC: F02D41/02 , F02B37/18 , F01N9/00 , F02D41/00 , F01N5/04 , F02D41/12 , F01N3/20 , F01N13/08 , F01N3/28 , F01N3/10
Abstract: The deterioration of an exhaust gas purification catalyst is suppressed as much as possible. An exhaust gas purification system for an internal combustion engine comprising: a throttle valve; a turbocharger; an exhaust gas purification catalyst; a bypass passage; a turbo bypass valve (TBV); and a controller. The controller is configured to carry out fuel cut processing and deterioration suppression control. In the deterioration suppression control, when a temperature of the exhaust gas purification catalyst is equal to or higher than a predetermined temperature in the course of the execution of the fuel cut processing, the degree of opening of the TBV becomes smaller, and the degree of opening of the throttle valve becomes larger, than when the temperature of the exhaust gas purification catalyst is lower than the predetermined temperature in the course of the execution of the fuel cut processing.
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公开(公告)号：US10669916B2
公开(公告)日：2020-06-02
申请号：US16026774
申请日：2018-07-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koichi Kimura , Yasuyuki Irisawa , Takashi Tsunooka
Abstract: In a construction in which a turbine and an exhaust gas purification catalyst are arranged close to each other, and in which an exhaust gas sensor is arranged in an exhaust passage between the turbine and the exhaust gas purification catalyst, the exhaust gas sensor is suppressed from getting wet with condensed water. In an exhaust system for an internal combustion engine, an exhaust gas sensor is arranged in a circumferential direction of a specific exhaust passage in a position except a range which is reached by a bypass exhaust gas carried away by a turbine swirling flow.
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公开(公告)号：US10415459B2
公开(公告)日：2019-09-17
申请号：US15729132
申请日：2017-10-10
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Takanobu Hosoya , Yasuyuki Irisawa , Hirofumi Kubota , Takashi Tsunooka
Abstract: A warm-up system for an exhaust gas apparatus includes the exhaust gas apparatus having a turbocharger provided with a turbine, a first exhaust gas control catalyst provided downstream of the turbine, a bypass passage bypassing the turbine, and an adjustment unit adjusting a turbine inflow exhaust gas flow rate and an electronic control unit. The electronic control unit is configured to perform a warm-up control which warms the turbine by controlling the turbine inflow exhaust gas flow rate, by using the adjustment unit, to reach a flow rate higher than zero and lower than the post-warm-up flow rate when an operating state of the internal combustion engine remains constant, such that a warmed state of the first exhaust gas control catalyst is maintained after the first exhaust gas control catalyst is warmed.
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