Patents by Inventor Koichi Nakae
Koichi Nakae has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10632991Abstract: A vehicle includes an engine, a rotating electric machine, a high-voltage power line, a high-voltage battery, an inverter, a capacitor, an electronic control unit, a low-voltage battery, an alternator, and a low-voltage power line. The capacitor is connected to the high-voltage power line. The electronic control unit is configured to control the engine such that the engine is operated and the alternator supplies electric power to the low-voltage power line in a case where the possibility of the occurrence of a collision of the vehicle is detected. The electronic control unit is configured to perform control such that the capacitor discharges a residual electric charge in a case where the possibility of the occurrence of the collision of the vehicle is detected or in a case where the occurrence of the collision of the vehicle is detected.Type: GrantFiled: February 14, 2017Date of Patent: April 28, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomokazu Yamauchi, Koichi Nakae, Ryouji Hironaka, Kazunobu Eritate, Takeshi Nozaki
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Patent number: 10363924Abstract: A vehicle includes an engine, an automatic transmission, a second clutch for engine disconnection, a rotating electric machine, a first clutch for rotating electric machine separation, and an electronic control unit. The electronic control unit switches the first clutch from a release state to an engagement state in a case where a collision of the vehicle occurs, the first clutch is in the release state, and a rotation speed of the rotating electric machine is higher than an input shaft rotation speed of the automatic transmission. In a case where the collision of the vehicle occurs, the first clutch is in the release state, and the rotation speed of the rotating electric machine is lower than the input shaft rotation speed of the automatic transmission, the first clutch is maintained in the release state.Type: GrantFiled: February 8, 2017Date of Patent: July 30, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomokazu Yamauchi, Koichi Nakae, Ryouji Hironaka, Kazunobu Eritate, Takeshi Nozaki
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Patent number: 9937914Abstract: A DC/DC converter is driven when an inter-terminal voltage of a low-voltage battery is lower than a determination voltage and an engine is started when the inter-terminal voltage becomes lower than a determination voltage during the driving of the DC/DC converter so that an alternator is driven at a predetermined driving point at which the alternator can he efficiently driven and the DC/DC converter is controlled such that the inter-terminal voltage of the low-voltage battery becomes a rated voltage. Energy efficiency can be improved since the alternator is efficiently driven.Type: GrantFiled: March 22, 2016Date of Patent: April 10, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomokazu Yamauchi, Koichi Nakae
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Publication number: 20170232957Abstract: A vehicle includes an engine, an automatic transmission, a second clutch for engine disconnection, a rotating electric machine, a first clutch for rotating electric machine separation, and an electronic control unit. The electronic control unit switches the first clutch from a release state to an engagement state in a case where a collision of the vehicle occurs, the first clutch is in the release state, and a rotation speed of the rotating electric machine is higher than an input shaft rotation speed of the automatic transmission. In a case where the collision of the vehicle occurs, the first clutch is in the release state, and the rotation speed of the rotating electric machine is lower than the input shaft rotation speed of the automatic transmission, the first clutch is maintained in the release state.Type: ApplicationFiled: February 8, 2017Publication date: August 17, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomokazu YAMAUCHI, Koichi NAKAE, Ryouji HIRONAKA, Kazunobu ERITATE, Takeshi NOZAKI
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Publication number: 20170232962Abstract: A vehicle includes an engine, a rotating electric machine, a high-voltage power line, a high-voltage battery, an inverter, a capacitor, an electronic control unit, a low-voltage battery, an alternator, and a low-voltage power line. The capacitor is connected to the high-voltage power line. The electronic control unit is configured to control the engine such that the engine is operated and the alternator supplies electric power to the low-voltage power line in a case where the possibility of the occurrence of a collision of the vehicle is detected. The electronic control unit is configured to perform control such that the capacitor discharges a residual electric charge in a case where the possibility of the occurrence of the collision of the vehicle is detected or in a case where the occurrence of the collision of the vehicle is detected.Type: ApplicationFiled: February 14, 2017Publication date: August 17, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomokazu YAMAUCHI, Koichi NAKAE, Ryouji HIRONAKA, Kazunobu ERITATE, Takeshi NOZAKI
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Publication number: 20160280208Abstract: A DC/DC converter is driven when an inter-terminal voltage of a low-voltage battery is lower than a determination voltage and an engine is started when the inter-terminal voltage becomes lower than a determination voltage during the driving of the DC/DC converter so that an alternator is driven at a predetermined driving point at which the alternator can he efficiently driven and the DC/DC converter is controlled such that the inter-terminal voltage of the low-voltage battery becomes a rated voltage. Energy efficiency can be improved since the alternator is efficiently driven.Type: ApplicationFiled: March 22, 2016Publication date: September 29, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomokazu YAMAUCHI, Koichi NAKAE
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Patent number: 9399656Abstract: A compound represented by the following Structural Formula (A) or a salt thereof. The compound or the salt thereof is suitably produced from a microorganism belonging to the genus Saccharothrix and can be suitably used as a prostaglandin production inhibitor.Type: GrantFiled: April 29, 2014Date of Patent: July 26, 2016Assignee: Microbial Chemistry Research FoundationInventors: Koichi Nakae, Fukiko Kojima
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Publication number: 20140256923Abstract: A compound represented by the following Structural Formula (A) or a salt thereof. The compound or the salt thereof is suitably produced from a microorganism belonging to the genus Saccharothrix and can be suitably used as a prostaglandin production inhibitor.Type: ApplicationFiled: April 29, 2014Publication date: September 11, 2014Applicant: Microbial Chemistry Research FoundationInventors: Koichi NAKAE, Fukiko KOJIMA
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Patent number: 5916130Abstract: After an elapse of a predetermined time period or after a run of a predetermined distance, a power output system of the present invention heats a catalytic converter with a catalyst heater while enabling an engine to be driven under a driving condition suitable for checking a catalyst packed in the catalytic converter for deterioration of the catalytic function. The power output system then measures a variation in temperature of the catalyst in this state and determines whether or not the variation is within a normal range, thereby detecting the deteriorating catalytic function of the catalyst, that is, abnormality of the catalytic converter. This structure enables the power output system to realize accurate detection of abnormality of the catalytic converter at a sufficient frequency. During the measurement of the temperature change of the catalyst, an assist motor is driven and controlled to output a torque Td* corresponding to a step-on amount of an accelerator pedal to a drive shaft.Type: GrantFiled: September 29, 1997Date of Patent: June 29, 1999Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koichi Nakae, Kiyoo Hirose
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Patent number: 5826671Abstract: In an internal combustion engine of a hybrid vehicle, a transient driving state occurs at a high frequency. It is rather difficult to control the quantity of fuel due to an adhesion of the fuel on the wall surface in the transient driving state. This results in insufficient reduction of the emission in the transient driving state. The object is thus to provide a vehicle control apparatus that can realize the effective reduction of emission. The vehicle control apparatus receives vehicle information (S200) and determines, based on the input vehicle information, whether or not the state of the vehicle should be shifted from either a combination mode or an internal combustion engine mode to a motor mode, that is, whether or not operation of an internal combustion engine EG is going to stop (S202). When such a mode shift is required, it is determined whether or not a specific warm-up condition is satisfied (S204).Type: GrantFiled: December 12, 1996Date of Patent: October 27, 1998Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koichi Nakae, Kiyoo Hirose
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Patent number: 5818116Abstract: A starting control apparatus of the present invention prevents a variation in output torque of an internal combustion engine at a time of starting the internal combustion engine, while effectively reducing an emission. In response to a requirement for starting an engine (150) (S212), a controller (180) calculates an idle revolving speed Ni that is a target at a starting time and a required amount of the air Qi for maintaining the idle revolving speed Ni (S213). The idle revolving speed Ni and the required amount of the air Qi are respectively set equal to a target engine speed Ne* and a target amount of air intake Q* (S214). The controller (180) sets torque command values Tm1* and Tm2* of first and second motors MG1 and MG2, in order to enable the motors MG1 and MG2 to generate a cranking torque required for revolving the engine (150) at the target revolving speed Ne* (S216 and S218), and controls the first motor MG1 and the second motor MG2 (S220 and S222).Type: GrantFiled: December 12, 1996Date of Patent: October 6, 1998Assignee: Toyota Jidosha kabushiki KaishaInventors: Koichi Nakae, Kiyoo Hirose, Tsuyoshi Mikami, Ryuji Ibaraki, Hiroshi Hata
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Patent number: 5343839Abstract: A two-stroke engine comprising two exhaust valves and two intake valves. These exhaust valves and these intake valves are arranged on the peripheral portion of the inner wall of the cylinder head, and one additional exhaust valve is arranged on the central portion of the inner wall of the cylinder head. The valve openings of the two intake valves, which are located on the exhaust valves side, are masked by the masking walls.Type: GrantFiled: November 29, 1993Date of Patent: September 6, 1994Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toyokazu Baika, Koichi Nakae
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Patent number: 5230312Abstract: A two-stroke engine comprising three exhaust valves and two intake valves. These exhaust valves and these intake valves are arranged on the peripheral portion of the inner wall of the cylinder head, and one additional intake valve is arranged on the central portion of the inner wall of the cylinder head. The valve openings of the three intake valves, which are located on the exhaust valves side, are masked by the masking walls. The central portion of the combustion chamber is scavenged by the fresh air fed from the additional intake valve, and the peripheral portion of the combustion chamber is scavenged by the fresh air fed from the remaining two intake valves.Type: GrantFiled: October 19, 1992Date of Patent: July 27, 1993Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toyokazu Baika, Norihiko Nakamura, Tadashi Fukuyama, Takeshi Sato, Koichi Nakae
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Patent number: 5125380Abstract: A two-stroke diesel engine comprising a pair of intake valves arranged on one side of the inner wall of the cylinder head, and a pair of exhaust valves arranged on the other side of the inner wall of the cylinder head. The valve openings of the intake valves, which are located on the exhaust valve side, are covered by corresponding masking walls. A prechamber is formed in the cylinder head, and the opening of the prechamber is arranged in the peripheral inner wall portion of the cylinder head, which is positioned farthest from the exhaust valves, between the intake valves.Type: GrantFiled: July 17, 1991Date of Patent: June 30, 1992Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koichi Nakae, Tadashi Fukuyama, Toyokazu Baika, Takeshi Sato, Michio Kawagoe, deceased