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公开(公告)号：US20200047605A1
公开(公告)日：2020-02-13
申请号：US16384935
申请日：2019-04-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takuya HIRAI , Yuji MIYOSHI , Tomohiro SHINAGAWA , Masatoshi YANO , Hiroyuki SUGIHARA , Ryo MICHIKAWAUCHI , Kunihiko HAYASHI , Yoichi OGURA , Hidefumi AIKAWA , Yu OFUNE
Abstract: A cooling apparatus of a vehicle driving system of the invention connects an engine water circulation passage to a hybrid system water circulation passage and flows cooling water in the engine water circulation passage and the hybrid system water circulation passage to cool a first hybrid system component by the cooling water cooled by an engine radiator and cool a second hybrid system component by the cooling water cooled by a hybrid system radiator when an engine cooling process is not requested, a first hybrid system cooling process is requested, a second hybrid system cooling process is requested, and a connection condition is satisfied. The connection condition is satisfied when the engine cooling process is not requested, and the cooling water flowing into the hybrid system water circulation passage from the engine water circulation passage, can cool the first hybrid system component.
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公开(公告)号：US20240337420A1
公开(公告)日：2024-10-10
申请号：US18745661
申请日：2024-06-17
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masanari NUMATA , Yu OFUNE , Satoshi ITO , Naoki KATO , Nobuharu KAKEHASHI , Tatsuhito MATSUMOTO , Kaoru OHTSUKA , Yasuhiro OI , Hidefumi AIKAWA , Ryo MICHIKAWAUCHI
Abstract: A heat pump system includes a heat pump cycle, a heating unit, a low-temperature side heat medium circuit, and a control unit. The heat pump cycle includes a compressor, a condenser, and an evaporator. The heating unit heats ventilation air with heat released form refrigerant in the condenser. The low-temperature side heat medium circuit circulates a low-temperature side heat medium such that the refrigerant in the evaporator absorbs heat of the low-temperature side heat medium, and includes a heat source device and a heat amount adjustment unit. The control unit causes an amount of heat transfer in the heating unit for heating the ventilation air to approach a predetermined target value via adjustment in temperature of the low-temperature side heat medium by controlling a rotation speed of the compressor and an operation of at least one of the heat source device and the heat amount adjustment unit.
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公开(公告)号：US20210101448A1
公开(公告)日：2021-04-08
申请号：US17036779
申请日：2020-09-29
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takuya HIRAI , Hidefumi AIKAWA , Yuji MIYOSHI
Abstract: A vehicle-mounted temperature controller 100 provided with a compressor 2 having a compression part 2a compressing a refrigerant and a drive motor 2b driving the compression part 2a and using waste heat accompanying driving of the compression part 2a to make the temperature of the refrigerant rise, a blower 61 blowing air to a heater core 145 raised in temperature by receiving heat of the refrigerant and blowing air exchanged in heat with the heater core 145 to the inside of the passenger compartment, and an electronic control unit 51 controlling a current phase of the drive motor 2b to a phase by which a ratio of change of an output of the drive motor 2b to a change of the current phase becomes relatively larger to thereby drive the drive motor 2b by an inefficient drive operation when the blower 61 is in a nondriven state and controlling the current phase to a phase by which a ratio of change of an output of the drive motor 2b to a change of the current phase becomes relatively smaller to thereby drive the drive motor 2b by an inefficiently drive operation when the blower 61 is in a driven state.
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公开(公告)号：US20200290431A1
公开(公告)日：2020-09-17
申请号：US16815146
申请日：2020-03-11
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hidefumi AIKAWA , Manabu ORIHASHI , Yoshio HASEGAWA , Takashi OGAWA
Abstract: A vehicle-mounted temperature controller includes a first heat circuit and a refrigeration circuit. The first heat circuit has a battery heat exchange part exchanging heat with a battery and a first heat exchange part, and configured so that a first heat medium circulates therethrough. The refrigeration circuit has a compression part compressing a refrigerant to raise its temperature, a second heat exchange part radiating heat from the refrigerant, an expansion part making the refrigerant expand, and the first heat exchange part making the refrigerant absorb heat from the first heat medium to make the refrigerant evaporate, and is configured to realize a refrigeration cycle by the refrigerant circulating therethrough. The first heat circuit includes a bypass flow path bypassing the battery heat exchange part and an adjusting device adjusting a flow rate of the first heat medium flowing through the bypass flow path. The adjusting device is controlled so that a ratio of a flow rate of the first heat medium flowing through the bypass flow path becomes greater, when the temperature of the battery is relatively low, compared to when it is relatively high.
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公开(公告)号：US20190009644A1
公开(公告)日：2019-01-10
申请号：US16027604
申请日：2018-07-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hidefumi AIKAWA , Yoichi OGURA , Masatoshi YANO , Yuji MIYOSHI , Yu OFUNE
Abstract: A control apparatus of a heat exchanging system according to the invention executes a control for activating a connection system to connect an engine water passage to a heater water passage and a control for increasing an engine pump duty ratio, and then executes a control for decreasing a heater pump duty ratio when the control for decreasing the heater pump duty ratio and the control for increasing the engine pump duty ratio are requested to be executed in order to control a core flow rate to a requested core flow rate and an engine flow rate to a requested engine flow rate after the engine water passage is connected to the heater water passage by the connection system.
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Patent Agency Ranking
公开(公告)号：US20190009643A1
公开(公告)日：2019-01-10
申请号：US16027586
申请日：2018-07-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masatoshi YANO , Hidefumi AIKAWA , Yoichi OGURA , Yuji MIYOSHI , Yu OFUNE
Abstract: A control apparatus of a heat exchanging system according to the invention, decreases a duty ratio of the heater pump after connecting an engine water passage to a heater water passage, shutting off a predetermined water passage portion of the heater water passage, and increasing a duty ratio of an engine pump when the controls for shutting off the predetermined water passage portion, connecting the engine water passage to the heater water passage, decreasing the duty ratio of the heater pump, and increasing the duty ratio of the engine pump, are requested to be executed.
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公开(公告)号：US20190009642A1
公开(公告)日：2019-01-10
申请号：US16027569
申请日：2018-07-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hidefumi AIKAWA , Yoichi OGURA , Yuji MIYOSHI , Masatoshi YANO , Yu OFUNE
Abstract: A control apparatus according to the invention is applied to a heat exchanging system comprising a connection system for connecting an engine water passage for heat exchanging water for cooling an internal combustion engine and the heater water passage for the heat exchanging water for heating a heater core to each other. The apparatus activates the connection system to connect the engine water passage to the heater water passage when a temperature of the heat exchanging water circulating through the engine water passage, is equal to or higher than the temperature of the heat exchanging water circulating through the heater water passage, and an interior of a vehicle is requested to be warmed up.
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公开(公告)号：US20150267602A1
公开(公告)日：2015-09-24
申请号：US14657067
申请日：2015-03-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takashi AMANO , Hidefumi AIKAWA , Kojiro HAYAKAWA
CPC classification number: F01P7/14 , F01P3/02 , F01P3/20 , F01P5/10 , F01P2003/027 , F01P2007/143 , F01P2007/146 , F01P2060/00 , F02M26/28
Abstract: A cooling apparatus comprises a first cooling conduit branching off from a downstream side connection conduit to cool the cylinder head, a second cooling conduit branching off from the downstream side connection conduit, is provided in parallel with the first cooling conduit, an intermediate cooling conduit being connected to the first and second cooling conduits, is provided with an EGR cooler, a third cooling conduit running from a connection point of the intermediate cooling conduit and the first cooling conduit to an upstream side connection conduit, a fourth cooling conduit running from a connection point of the intermediate cooling conduit and the second cooling conduit to the upstream side connection conduit, and a changeover valve for adjusting the flow resistance of the second cooling conduit. And the direction of coolant flow in the intermediate cooling conduit is changed over by operating the changeover valve.
Abstract translation: 冷却装置包括从下游侧连接导管分支的第一冷却导管，用于冷却气缸盖，从下游侧连接导管分支的第二冷却导管与第一冷却导管平行设置，中间冷却导管为 连接到第一和第二冷却导管，设置有EGR冷却器，从中间冷却管道和第一冷却管道的连接点延伸到上游侧连接管道的第三冷却管道，从连接器 中间冷却管道和第二冷却管道到上游侧连接管道的点，以及用于调节第二冷却管道的流动阻力的转换阀。 并且通过操作切换阀来改变中间冷却管道中的冷却剂流动的方向。
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公开(公告)号：US20240239158A1
公开(公告)日：2024-07-18
申请号：US18413746
申请日：2024-01-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Ryo MICHIKAWAUCHI , Hidefumi AIKAWA , Masanari NUMATA , Yu OFUNE , Satoshi ITO , Naoki KATO , Tatsuhito MATSUMOTO
CPC classification number: B60H1/32284 , B60H1/00278 , B60H2001/00307 , B60H1/323 , B60H2001/3255 , B60H2001/3285
Abstract: A system includes a refrigeration circuit, low-temperature circuit and controller. The refrigeration circuit includes: a tiller for absorbing heat from a colling water to a refrigerant; and a condenser for releasing heat from the refrigerant to an outside, and realizes a refrigeration cycle by circulating the refrigerant therethrough. The low-temperature circuit includes the tiller and an external heat exchanger for absorbing heat from an outside to the first heat medium, and circulate the cooling water therethrough. The controller can change a heat absorption amount of the refrigerant at the tiller. The controller controls the device so that a change in the heat absorption amount of the refrigerant at the first heat exchanger in accordance with a change in a temperature of the first heat medium is reduced, if the temperature of the cooling water flowing through the first heat exchanger changes by a reference value or more.
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公开(公告)号：US20210094390A1
公开(公告)日：2021-04-01
申请号：US17017817
申请日：2020-09-11
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hidefumi AIKAWA
Abstract: A cooling system mounted in a vehicle includes a radiator exchanging heat with the outside air; first and second flow paths; and a control device. The first path is configured so that when the first pump is operating, a heat medium circulates through the radiator and a first heat exchanger exchanging heat with the inverter. The second flow path is connected to the radiator in parallel with the first flow path, and is configured so that when the second pump is operating, the heat medium circulates through the radiator and a second heat exchanger exchanging heat with the battery. The control device controls the outputs of the first and second pumps so that when making both of the outputs rise or fall, the flow rate of the heat medium flowing through the first flow path becomes temporarily larger than the target flow rate.
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