公开(公告)号：US10393044B2

公开(公告)日：2019-08-27

申请号：US15642897

申请日：2017-07-06

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Hirokazu Ito ,  Yuji Yamaguchi ,  Yuji Miyoshi

IPC: F02D41/02 ,  F01N3/10 ,  F01N11/00 ,  F02D41/00 ,  F02D41/12 ,  F02D37/02

Abstract: A control device includes an electronic control unit. During deceleration of the engine, when a temperature of a three-way catalyst is equal to or higher than a predetermined temperature and execution conditions of fuel cut processing are established, the electronic control unit executes first control for closing an exhaust shutoff valve, while fuel injection and ignition are continued. When the exhaust shutoff valve reaches the closed state in the first control, the electronic control unit executes second control for bringing the engine into an intake control state in which the intake throttle is closed and an EGR valve is in a predetermined open state. In the second control, the electronic control unit executes the fuel cut processing by stopping the ignition before the engine is brought into the intake control state and stopping the fuel injection after the engine is brought into the intake control state.

公开(公告)号：US10385759B2

公开(公告)日：2019-08-20

申请号：US15895239

申请日：2018-02-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  AISIN SEIKI KABUSHIKI KAISHA

Inventor： Yoshio Hasegawa ,  Tomohiro Shinagawa ,  Kenichi Kubota ,  Ryo Michikawauchi ,  Yuji Miyoshi ,  Yoshiharu Hirata ,  Naoto Yumisashi

IPC: F01P7/16 ,  F01P3/02 ,  F01P5/10 ,  F01P3/18 ,  F01P7/14

Abstract: A cooling system includes: a first coolant passage; a second coolant passage; a pump; a radiator; a third coolant passage; a connection switching mechanism that switches between a forward flow connection state and a reverse flow connection state; a fourth coolant passage; a fifth coolant passage; and a shutoff valve configured to open/shut off the fifth coolant passage. The radiator is disposed at a location at which coolant flowing from a second end of the first coolant passage into a fourth end of the second coolant passage is not cooled in the reverse flow connection state, and coolant flowing out from the second end of the first coolant passage and the fourth end of the second coolant passage is cooled in the forward flow connection state.

公开(公告)号：US20190009645A1

公开(公告)日：2019-01-10

申请号：US16027631

申请日：2018-07-05

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Hidefumi Aikawa ,  Yoichi Ogura ,  Masatoshi Yano ,  Yuji Miyoshi ,  Yu Ofune

IPC: B60H1/00 ,  B60H1/12 ,  F01P3/20 ,  F01P5/10 ,  F01P7/16

Abstract: A control apparatus of a heat exchanging apparatus according to the invention executes a control for activating a connection system to connect an engine water passage to a heater water passage and then, executes a control for decreasing a heater pump duty ratio and a control for decreasing an engine pump duty ratio when the control for decreasing the heater pump duty ratio and the control for decreasing 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.

公开(公告)号：US10167791B2

公开(公告)日：2019-01-01

申请号：US15613632

申请日：2017-06-05

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Yuji Yamaguchi ,  Hirokazu Ito ,  Yuji Miyoshi

IPC: B01D53/94 ,  F01N3/10 ,  F02D41/00 ,  F02D41/02 ,  F02D41/26 ,  F02D9/08 ,  F02M26/17 ,  F02P5/04 ,  F02D41/12 ,  F02P5/15 ,  F02P9/00

Abstract: This disclosure is intended to suppress a noble metal supported by a three-way catalyst from being deteriorated by oxidation with the execution of fuel cut processing in a suitable manner. A control apparatus for a naturally aspirated gasoline engine is provided with a three-way catalyst, a first throttle valve, a second throttle valve arranged in the intake passage at the downstream side of the first throttle valve, an EGR valve, and a controller. When the controller carries out fuel cut processing and the temperature of the three-way catalyst is equal to or higher than a predetermined temperature, the controller introduces the EGR gas into a cylinder of the gasoline engine as intake air by fully closing the first throttle valve and by opening the EGR valve, and further controls an amount of the EGR gas by adjusting the degree of opening of the second throttle valve.

公开(公告)号：US09822672B2

公开(公告)日：2017-11-21

申请号：US14910731

申请日：2014-08-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki Haga ,  Yuji Miyoshi

IPC: F01L1/34 ,  F01L1/20 ,  F01L1/26 ,  F02D41/22 ,  F02D35/02 ,  F01L31/16 ,  F02D41/00

CPC classification number: F01L1/20 ,  F01L1/267 ,  F01L31/16 ,  F01L2800/11 ,  F02D35/023 ,  F02D41/221 ,  F02D2041/001 ,  Y02T10/40

Abstract: An internal combustion engine includes an exhaust valve, a plurality of cams Ca, Cb, and Cc used to drive the exhaust valve, a cam-switching variable valve mechanism that selects a use cam used to drive the exhaust valve out of the plurality of cams Ca, Cb, and Cc, and an electronic control unit that determines whether switching abnormality of the use cam in the variable valve mechanism is present on the basis of a locus M in a predetermined period K which is a period in which the exhaust valve is opened. The locus M is a locus of an in-cylinder pressure changing rate dPc/dθ and is specifically a locus indicating a variation of the in-cylinder pressure changing rate dPc/dθ depending on a crank angle θ.

公开(公告)号：US11780293B2

公开(公告)日：2023-10-10

申请号：US17720308

申请日：2022-04-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuji Miyoshi

IPC: B60H1/03 ,  B60H1/00

CPC classification number: B60H1/03 ,  B60H1/00885

Abstract: An in-vehicle temperature control system includes a refrigeration circuit including an inter-media heat exchanger that dissipates heat from a refrigerant to a heat medium, the refrigeration circuit being configured to realize a refrigeration cycle, and a heat circuit including a heater core, the inter-media heat exchanger, and an engine heat circuit. The heat circuit includes an adjusting valve. When heating is performed by using heat obtained by the refrigeration cycle, the adjusting valve is controlled to a first state where the heat medium flows into the heater core from the inter-media heat exchanger, and when heating is performed by using heat obtained by an internal combustion engine, the adjusting valve is controlled to a second state where the heat medium flows into the heater core from the engine heat circuit.

公开(公告)号：US11047285B2

公开(公告)日：2021-06-29

申请号：US16671176

申请日：2019-11-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takuya Hirai ,  Takashi Hotta ,  Yuji Miyoshi

IPC: F01N5/02 ,  F02D41/00 ,  F02M26/47 ,  F02M26/33 ,  F01N3/02 ,  F02M26/28 ,  F02M26/00 ,  F02M26/23 ,  F02M26/30 ,  F02D9/02

Abstract: A control apparatus of an internal combustion engine controls a heat exchange cooling water flow rate which is a flow rate of cooling water supplied to an exhaust heat recovery cooler apparatus, to a larger flow rate when the control apparatus executes an EGR control, and the exhaust heat recovery cooler apparatus performs an exhaust heat recovery function, than when the control apparatus executes the EGR control, and the exhaust heat recovery cooler apparatus does not perform the exhaust heat recovery function.

公开(公告)号：US10890102B2

公开(公告)日：2021-01-12

申请号：US15965569

申请日：2018-04-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshiharu Hirata ,  Yuji Miyoshi ,  Tomohiro Shinagawa ,  Hiroyuki Sugihara

IPC: F01P7/16 ,  F01P3/04 ,  F02F1/10 ,  F01P3/02 ,  F01P7/14

Abstract: A cooling apparatus of an internal combustion engine according to the invention controls an activation of a flow rate changing valve such that a block water flow rate proportion when an engine output is relatively large in a range of the engine output equal to or larger than a predetermine engine output, is larger than the block water flow rate proportion when the engine output is relatively small in the range of the engine output equal to or larger than a predetermine engine output.

公开(公告)号：US10823040B2

公开(公告)日：2020-11-03

申请号：US15634073

申请日：2017-06-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinya Asaura ,  Masaaki Sato ,  Ryohei Ono ,  Yuji Miyoshi

IPC: F01P3/20 ,  F01N3/20 ,  F01N3/36 ,  F01N3/10 ,  F01N13/00 ,  B01D53/94 ,  B01J23/44 ,  B01J29/06 ,  B01J35/00 ,  B01J35/04 ,  F01N3/035 ,  F02B23/02 ,  F02B37/00

Abstract: An exhaust gas control system includes an upstream purification device disposed in an exhaust passage of the internal combustion engine, a downstream purification device disposed in a portion of the exhaust passage downstream from the upstream purification device, a fuel addition valve disposed in a portion of the exhaust passage upstream from the upstream purification device, and a urea addition valve disposed in a portion of the exhaust passage between the upstream purification device and the downstream purification device, and a cooling device. The cooling device is configured such that refrigerant cools the fuel addition valve first and then cools the urea addition valve subsequent to the fuel addition valve.

公开(公告)号：US10808599B2

公开(公告)日：2020-10-20

申请号：US16239583

申请日：2019-01-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoichi Ogura ,  Kunihiko Hayashi ,  Yuji Miyoshi ,  Masatoshi Yano ,  Yu Ofune

IPC: F01P7/16 ,  B60K11/02 ,  H01M10/625 ,  H01M10/613 ,  B60W20/00

Abstract: A temperature control apparatus of a vehicle of the invention flows a cooling medium in an engine circulation circuit and a battery circulation circuit and an activation of an engine heat exchanging system so as not to perform an engine heat exchanging when an engine temperature is lower than an engine warming end temperature and a battery temperature is lower than a predetermined battery temperature lower than a battery warming end temperature, and flows the cooling medium in the engine circulation circuit and the battery circulation circuit and the activation of the engine heat exchanging system so as to perform the engine heat exchanging when the engine temperature is lower than the engine warming end temperature, and the battery temperature is equal to or higher than the predetermined battery temperature.