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公开(公告)号：US20200240316A1
公开(公告)日：2020-07-30
申请号：US16703138
申请日：2019-12-04
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Yoshihiro Furuya
Abstract: A cooling device of an internal combustion engine includes a control valve that regulates the flow of a cooling liquid in a circulation circuit, and an electronic control unit. The electronic control unit is configured to have the following functions: controlling driving of a motor of the control valve; determining whether or not the shifting speed of a valve body of the control valve has decreased rapidly; calculating a motor torque based on an effective voltage applied to the motor; deriving a collision factor based on a smoothed angular speed value; and when the electronic control unit determines that the shifting speed of the valve body has decreased rapidly, calculating a rapid-decrease-caused stress so as to become larger as a product of the motor torque and the collision factor becomes larger.
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公开(公告)号：US10508588B2
公开(公告)日：2019-12-17
申请号：US15960736
申请日：2018-04-24
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Rihito Kaneko , Noboru Takagi , Naoto Hisaminato , Mitsuru Yamaguchi , Hirokazu Andoh , Masaaki Yamaguchi , Yoshihiro Furuya
Abstract: A cooling device includes: an air blast passage; a heater core that is disposed in the air blast passage; an air blast volume adjusting member that is opened and closed to adjust an air blast volume which flows in the heater core; a flow rate adjuster that adjusts a flow rate of the coolant which is introduced into the heater core; and a controller. The controller sets the flow rate of the coolant which is adjusted by the flow rate adjuster to be less than a lower limit value of an adjustable range of the flow rate of the coolant which is adjusted by the flow rate adjuster in a vehicle compartment air-conditioning state in which the air blast volume adjusting member allows an air blast to flow to the heater core when the air blast volume adjusting member fully closes the heater core side of the air blast passage.
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公开(公告)号：US10184419B2
公开(公告)日：2019-01-22
申请号：US15188427
申请日：2016-06-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Satoko Tofukuji , Yoshihiro Furuya
Abstract: A cooling device for an internal combustion engine includes a HT cooling system, a LT cooling system, and an electronic control unit. The electronic control unit is configured to, if a HT temperature has reached a HT determination value, control an operation state of the HT cooling system to start cooling for maintaining the HT temperature at a HT target temperature. The electronic control unit is configured to, if a LT temperature being a temperature of a LT cooling medium has reached a LT determination value, start a LT cooling control for maintaining the LT temperature at a LT target temperature under a specific condition where an early warm-up of the internal combustion engine is not required. The electronic control unit is configured to start the LT cooling control if the HT temperature has reached the HT determination value under a condition where the early warm-up is required.
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公开(公告)号：US20180347445A1
公开(公告)日：2018-12-06
申请号：US15960736
申请日：2018-04-24
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Rihito Kaneko , Noboru Takagi , Naoto Hisaminato , Mitsuru Yamaguchi , Hirokazu Andoh , Masaaki Yamaguchi , Yoshihiro Furuya
Abstract: A cooling device includes: an air blast passage; a heater core that is disposed in the air blast passage; an air blast volume adjusting member that is opened and closed to adjust an air blast volume which flows in the heater core; a flow rate adjuster that adjusts a flow rate of the coolant which is introduced into the heater core; and a controller. The controller sets the flow rate of the coolant which is adjusted by the flow rate adjuster to be less than a lower limit value of an adjustable range of the flow rate of the coolant which is adjusted by the flow rate adjuster in a vehicle compartment air-conditioning state in which the air blast volume adjusting member allows an air blast to flow to the heater core when the air blast volume adjusting member fully closes the heater core side of the air blast passage.
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公开(公告)号：US09759120B2
公开(公告)日：2017-09-12
申请号：US15092803
申请日：2016-04-07
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshihiro Furuya , Yuji Miyoshi , Satoko Tofukuji , Nobuki Kawamoto , Daishi Takahashi
CPC classification number: F01P7/14 , F01P7/165 , F01P11/16 , F01P2007/146 , F01P2025/42 , F01P2060/02 , F02B29/0443 , F02B29/0493 , F02F1/10 , Y02T10/146
Abstract: High temperature (HT) and low temperature (LT) cooling water, the LT cooling water being at a lower temperature than the HT cooling water, circulate in HT and LT cooling water flows in respective channels. A controller controls to set the temperature of the LT cooling water lower in a case where an operating point of an engine lies in a particular region in an operational region of the engine, the particular region including a region in which the load is high and the engine speed is low, than in a case where the operating point lies in an operational region other than the particular region. Furthermore, the controller narrows the particular region in a direction toward higher loads in a case where the temperature of the HT cooling water is lower than a predetermined temperature.
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Patent Agency Ranking
公开(公告)号：US10927747B2
公开(公告)日：2021-02-23
申请号：US16001092
申请日：2018-06-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Rihito Kaneko , Noboru Takagi , Naoto Hisaminato , Mitsuru Yamaguchi , Hirokazu Andoh , Masaaki Yamaguchi , Yoshihiro Furuya
Abstract: A cooling system of an internal combustion engine includes an adjustment valve configured to adjust a flow rate of a cooling liquid discharged from a water jacket. A controller for the cooling system includes circuitry configured to execute flow-restriction control that controls the adjustment valve to restrict discharge of the cooling liquid from the water jacket, thereby increasing temperature of an engine body. The circuitry is configured to execute the flow-restriction control so that temperature of the cooling liquid in the water jacket at which the flow-restriction control is terminated is lower when an ambient pressure is low than when the ambient pressure is high.
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公开(公告)号：US09688277B2
公开(公告)日：2017-06-27
申请号：US14987887
申请日：2016-01-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshihiro Furuya
IPC: B60W30/20 , B60W10/06 , B60W30/18 , B60W10/02 , B60W20/00 , F02D41/06 , F02N11/08 , F02D35/02 , B60W20/40 , F02D41/02 , F02N11/04
CPC classification number: B60W30/18054 , B60W10/02 , B60W10/06 , B60W20/00 , B60W20/40 , B60W30/18 , B60W30/20 , B60W2030/206 , B60W2510/06 , B60W2510/0676 , B60W2520/04 , B60W2520/06 , B60W2540/10 , B60W2540/12 , B60W2540/20 , B60W2550/10 , B60W2560/06 , B60W2710/021 , B60W2710/06 , B60W2710/0622 , F02D35/026 , F02D41/022 , F02D41/065 , F02D2200/021 , F02D2200/50 , F02N11/04 , F02N11/0814 , F02N11/0825 , F02N2011/0896 , F02N2200/0801 , F02N2200/0802 , F02N2200/101 , F02N2200/12 , Y02T10/48
Abstract: If a predicted compression-time in-cylinder temperature Tp having a positive correlation with the intensity of predicted pre-ignition is equal to or higher than a pre-ignition threshold value Tig when a request for automatic start is made, a forward/reverse switching mechanism is placed in a released state, and an engine is automatically started. If the predicted compression-time in-cylinder temperature Tp is lower than the pre-ignition threshold value Tig, the forward/reverse switching mechanism is placed in an engaged state, and the engine is automatically started.
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公开(公告)号：US11433871B2
公开(公告)日：2022-09-06
申请号：US16942867
申请日：2020-07-30
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshihiro Furuya
Abstract: An ECU is configured to control an SOC control center of a battery and perform an engine torque suppression control. The engine torque suppression control is a control that suppresses output of an engine during a predetermined period of time after starting a system, and causes motor generators to output torque supplementing the suppressed output of the engine. When a deposition amount of PM on a filter exceeds a first specified amount, the ECU raises the SOC control center by controlling the motor generators before stopping the system as compared to when the deposition amount of PM is lower than a specified amount, and performs the engine torque suppression control at a next start after stopping the system.
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公开(公告)号：US11131232B2
公开(公告)日：2021-09-28
申请号：US16701762
申请日：2019-12-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshihiro Furuya
Abstract: A cooling system of an internal combustion engine includes a control valve that regulates the flow of a coolant in a circulation circuit, and an electronic control unit. The electronic control unit is configured to have the following functions: controlling the driving of a motor of the control valve; calculating a motor torque based on an effective voltage applied to the motor; calculating a valve body torque that is part of the motor torque, based on an angular acceleration rate of the motor; and calculating a driving stress based on a difference between the motor torque and the valve body torque.
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公开(公告)号：US10808597B2
公开(公告)日：2020-10-20
申请号：US16124779
申请日：2018-09-07
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshihiro Furuya , Rihito Kaneko , Noboru Takagi , Masaaki Yamaguchi , Hirokazu Ando , Mitsuru Yamaguchi
Abstract: An internal combustion engine includes a water jacket, a cooling water pump as a cooling liquid pump, and an adjusting valve. A control device for the internal combustion engine executes the water stoppage control of increasing the temperature of the engine body by limiting the discharge of the cooling liquid from the water jacket by the adjusting valve, and an automatic stop and automatic startup control of automatically stopping and automatically starting the internal combustion engine. The control device increases the fuel injection amount for automatically starting the internal combustion engine in a case where the water stoppage control is being executed when the internal combustion engine is automatically stopped as compared with a case where the water stoppage control is not being executed when the internal combustion engine is automatically stopped.
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