公开(公告)号：US20200158254A1

公开(公告)日：2020-05-21

申请号：US16660146

申请日：2019-10-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  AISIN SEIKI KABUSHIKI KAISHA

Inventor： Noboru TAKAGI ,  Hirokazu KATO ,  Rihito KANEKO ,  Naoto HISAMINATO ,  Hirokazu ANDO ,  Masaaki YAMAGUCHI ,  Hirotaka WATANABE ,  Takahiko AOYAGI ,  Masahiro YOSHIDA ,  Koji NUNAMI ,  Naoto YUMISASHI ,  Masafumi YOSHIDA

IPC: F16K31/163 ,  F16K17/36 ,  F02F1/14 ,  F01P7/14

Abstract: A cooling apparatus includes a circulation circuit, a pump, a flow rate adjustment valve, and a controller. The flow rate adjustment valve includes a valve member that rotates to change an open degree of the flow rate adjustment valve and a stopper that moves between a restriction position and a retraction position. The controller is configured to execute, when maintaining the open degree of the flow rate adjustment, a preparatory process of moving the stopper to the restriction position after arranging the stopper at the retraction position and arranging the valve member further in the valve-closing direction than the stopper through control of the pump discharge amount.

公开(公告)号：US20170218879A1

公开(公告)日：2017-08-03

申请号：US15408825

申请日：2017-01-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Rihito KANEKO ,  Noboru TAKAGI ,  Isao TAKAGI ,  Takashi MATSUTANI ,  Naoto HISAMINATO ,  Mitsuru YAMAGUCHI ,  Hirokazu ANDO

IPC: F02F1/14 ,  F01P7/16 ,  F02B75/22 ,  F01P5/12

CPC classification number: F01P7/16 ,  F01P2007/146 ,  F01P2037/02 ,  F02B75/22

Abstract: An engine cooling apparatus includes a mechanical water pump having a suction hole and N discharge holes (N is an integer not less than two), N water jackets that are arranged in an engine and correspond to the N discharge holes, N joint passages, each of which joins one of the N discharge holes to the associated water jacket, a return passage that returns coolant to the suction hole after the coolant has passed through the N water jackets and has merged in a merging portion, a coolant stopping mechanism that blocks return flow of coolant through the return passage, and N communication passages each of which allows the corresponding one of the N joint passages to communicate with the suction hole while bypassing the N water jackets and the coolant stopping mechanism.

公开(公告)号：US20200157999A1

公开(公告)日：2020-05-21

申请号：US16660211

申请日：2019-10-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  AISIN SEIKI KABUSHIKI KAISHA

Inventor： Noboru TAKAGI ,  Hirokazu KATO ,  Rihito KANEKO ,  Naoto HISAMINATO ,  Hirokazu ANDO ,  Masaaki YAMAGUCHI ,  Hirotaka WATANABE ,  Masahiro YOSHIDA ,  Koji NUNAMI ,  Naoto YUMISASHI ,  Masafumi YOSHIDA ,  Takahiko AOYAGI

IPC: F01P7/14 ,  F01P5/10 ,  F01P3/18 ,  F01P7/16

Abstract: A cooling apparatus for an internal combustion engine includes a pump, a radiator, a flow rate adjustment valve, a bypass passage, and a controller. The flow rate adjustment valve includes a valve member that rotates to change an open degree of the flow rate adjustment valve and a valve member biasing component that biases the valve member in a valve-closing direction in which the open degree decreases. The valve member rotates in a valve-opening direction in which the open degree increases when a pressure difference increases between positions upstream and downstream of the valve member in a flow direction of coolant in the circulation circuit and rotate in the valve-closing direction when the pressure difference decreases. The controller increases the pump discharge amount as a target radiator flow rate that is a target of an amount of coolant passing through the radiator increases.

公开(公告)号：US20190383202A1

公开(公告)日：2019-12-19

申请号：US16438564

申请日：2019-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  AISIN SEIKI KABUSHIKI KAISHA

Inventor： Rihito KANEKO ,  Noboru TAKAGI ,  Naoto HISAMINATO ,  Mitsuru YAMAGUCHI ,  Hirokazu ANDO ,  Masaaki YAMAGUCHI ,  Takahiko AOYAGI ,  Hirotaka WATANABE

IPC: F01P7/16 ,  F01P3/20 ,  F01P5/12

Abstract: A cooling device includes an inner passage, an outer passage, an engine-driven pump, an electromagnetic control valve, and a driving circuit that regulates current flowing through the electromagnetic control valve by activating and deactivating a switching element. A cooling controller for the cooling device includes a processing circuit configured to execute an operation process for operating, when the engine-driven pump is driven, the switching element by setting a duty cycle of an activation time to a switching cycle, which is a reciprocal of a switching frequency of the switching element, to be a larger value when a temperature of the internal combustion engine is low than when the temperature is high and a cycle varying process for setting a longer switching cycle when the temperature of the internal combustion engine is less than a preset temperature than when the temperature is greater than or equal to the preset temperature.

公开(公告)号：US20200325846A1

公开(公告)日：2020-10-15

申请号：US16837069

申请日：2020-04-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiko ASANO ,  Noboru TAKAGI ,  Naoto HISAMINATO ,  Minoru OKIMURA ,  Shinya WAKABAYASHI

IPC: F02F1/42 ,  F02F1/30

Abstract: A cylinder head includes an exhaust port through which exhaust gas discharged out of a combustion chamber of an internal combustion engine passes. The cylinder head includes a first fin and a second fin projecting from an inner wall of the exhaust port and extending in a flow direction of the exhaust gas. The cylinder head includes a first projection projecting from the inner wall of the exhaust port and extending in a direction intersecting the first fin. The cylinder head also includes a second projection projecting from the inner wall of the exhaust port and extending in a direction intersecting the second fin.

公开(公告)号：US20190010857A1

公开(公告)日：2019-01-10

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

IPC: F01P7/14 ,  B60K11/02 ,  F01P3/02 ,  F01P5/10

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.

公开(公告)号：US20180066567A1

公开(公告)日：2018-03-08

申请号：US15695432

申请日：2017-09-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Rihito KANEKO ,  Noboru TAKAGI ,  Isao TAKAGI ,  Naoto HISAMINATO ,  Mitsuru YAMAGUCHI ,  Hirokazu ANDO ,  Hidetoshi ONODA ,  Hiroshi AKEYAMA

IPC: F01P7/16 ,  F01P5/12

CPC classification number: F01P7/16 ,  F01P5/12 ,  F01P7/167 ,  F01P2007/146 ,  F01P2037/00

Abstract: An ECU includes a motor control unit that controls energization to a motor, and a fixation determination unit that makes a determination on fixation of a valve body. The motor drives the valve body housed in a housing of a control valve. When the fixation determination unit has determined that the valve body is fixed, the motor control unit performs fixation-time control that energizes the motor so as to drive the valve body.