公开(公告)号：US20170037787A1

公开(公告)日：2017-02-09

申请号：US15223770

申请日：2016-07-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi WATANABE ,  Isao TAKAGI ,  Masaya SUNAGO ,  Shoichi AKIYAMA ,  Kenji SENDA ,  Norihito HANAI ,  Hisayuki ITO

IPC: F02D13/02 ,  F02D35/02 ,  F01L1/344

CPC classification number: F02D13/0238 ,  F01L1/3442 ,  F01L2001/34453 ,  F01L2001/34456 ,  F01L2001/34463 ,  F01L2800/01 ,  F02D13/0261 ,  F02D13/0269 ,  F02D35/027 ,  F02D41/006 ,  F02D41/2451 ,  F02D2041/001 ,  F02D2250/08 ,  F02P5/152 ,  Y02T10/142 ,  Y02T10/18 ,  Y02T10/46 ,  Y02T10/47

Abstract: An engine includes a variable valve mechanism capable of holding a valve timing of an intake valve in an intermediate phase when the engine is started. An ECU calculates a degree of deposit adhesion in a combustion chamber, and calculates a deposit correction amount that is a retard correction amount for an ignition timing set in accordance with the calculated degree of the deposit adhesion. The ECU calculates a first correction amount that is a first adaptive value for the retard correction amount for the ignition timing in a reference phase of the valve timing and a second correction amount that is a second adaptive value for the retard correction amount for the ignition timing in an adaptation phase of the valve timing. The deposit correction amount is set based on the first correction amount and the second correction amount.

Abstract translation: 发动机包括可变气门机构，当发动机起动时，能够将进气门的气门正时保持在中间阶段。 ECU计算燃烧室中的沉积粘附度，并计算作为根据计算出的沉积粘合度而设定的点火正时的延迟校正量的沉积校正量。 ECU计算作为气门正时的基准相位中的点火正时的延迟补偿量的第一自适应值的第一修正量，作为点火正时的延迟补偿量的第二自适应值的第二修正量 在气门正时的适应阶段。 基于第一校正量和第二校正量设定存款校正量。

公开(公告)号：US20220085394A1

公开(公告)日：2022-03-17

申请号：US17391163

申请日：2021-08-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomotaka ISHIKAWA ,  Satoshi WATANABE ,  Kazushi AKAMATSU

IPC: H01M8/04746 ,  H01M8/04119 ,  H01M8/04828

Abstract: A fuel cell system includes: a plurality of fuel cell units of which each includes a fuel cell, an air supply pipe, an air supply device, an air discharge pipe, and a control unit; and an exhaust pipe connected to the plurality of air discharge pipes and configured to discharge exhaust gas to the outside of the fuel cell system. The control units of the plurality of fuel cell units are configured such that, when one or more fuel cell units included in the plurality of fuel cell units are operating to generate electric power and each of the remainder of the plurality of fuel cell units is not operating to generate electric power, the control unit of the fuel cell unit that is not operating to generate electric power activates the air supply device of the corresponding fuel cell unit.

公开(公告)号：US20190273273A1

公开(公告)日：2019-09-05

申请号：US16286915

申请日：2019-02-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi WATANABE ,  Satoshi SHIOKAWA ,  Shuhei NAKAMURA ,  Norihiro FUKAYA

IPC: H01M8/0438 ,  H01M8/04111 ,  H01M8/04082 ,  H01M8/0432 ,  H01M8/04119 ,  H01M8/04858 ,  B60L50/72 ,  B60L50/71

Abstract: A fuel cell system includes: a flow sensor configured to measure an actual flow rate of air which is introduced into an oxidizing gas supply passage via a compressor when a fuel cell generates electric power; and a wind speed deriving unit configured to acquire a flow rate of air measured by the flow sensor in a state in which air flows from the oxidizing gas supply passage to an oxidizing gas discharge passage via the compressor and a bypass flow passage and to derive an actual wind speed of wind which is received by the fuel cell system, when the compressor stops.

公开(公告)号：US20220109168A1

公开(公告)日：2022-04-07

申请号：US17463682

申请日：2021-09-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomotaka ISHIKAWA ,  Satoshi WATANABE ,  Kazushi AKAMATSU

IPC: H01M8/04089 ,  H01M8/04746

Abstract: A fuel cell system includes fuel cell units each including a fuel cell stack, an anode gas discharge system configured to discharge anode gas from the fuel cell stack, and a cathode gas supply and discharge system configured to supply cathode gas to the fuel cell stack and discharge cathode gas from the fuel cell stack, a mixed gas discharge system configured to mix gas discharged from the anode gas discharge system and the cathode gas supply and discharge system of each fuel cell unit and discharge the mixed gas, and a controller configured to control the fuel cell units. The controller is configured to control at least one of the anode gas discharge system and the cathode gas supply and discharge system of each fuel cell unit to shift a time at which gas to be discharged from each fuel cell unit merges in the mixed gas discharge system.

公开(公告)号：US20190280317A1

公开(公告)日：2019-09-12

申请号：US16288412

申请日：2019-02-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Takahiko HASEGAWA ,  Kohei ODA ,  Satoshi WATANABE ,  Shuhei NAKAMURA ,  Norihiro FUKAYA

IPC: H01M8/04223 ,  H01M8/2404 ,  H01M8/242 ,  H01M8/04858 ,  H01M4/90

Abstract: A fuel cell system includes a removal treatment execution unit configured to execute an oxide layer removal treatment that removes an oxide layer generated on a catalyst of a fuel cell. The removal treatment execution unit is configured to execute the oxide layer removal treatment by adjusting a voltage of the fuel cell to be within a predetermined second voltage range lower than a predetermined first voltage range that is lower than an open-circuit voltage, when an operation of the fuel cell system shifts from a first operation, where a current value of the fuel cell is zero and the flow rate is controlled to maintain the voltage of the fuel cell within the first voltage range, to a second operation, where the current value is larger than zero and the flow rate is controlled in response to an output request to the fuel cell.

公开(公告)号：US20190280315A1

公开(公告)日：2019-09-12

申请号：US16288423

申请日：2019-02-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi WATANABE ,  Norihiro FUKAYA

IPC: H01M8/04089 ,  H01M8/0432 ,  H01M8/04746 ,  H01M8/0438

Abstract: A fuel cell system includes a control unit that is configured to perform pressure reduction control for increasing a flow rate of cathode gas supplied to a fuel cell from a turbo compressor, by controlling a pressure adjusting valve such that a pressure in the fuel cell is lower when a pressure reduction condition is fulfilled than when the pressure reduction condition is not fulfilled. The pressure reduction condition is a condition that an outside air pressure determined based on outside air pressure-associated information is lower than an outside air pressure threshold determined in advance and that an amount of water determined based on water amount-associated information is equal to or larger than a water amount threshold determined in advance.

公开(公告)号：US20180145356A1

公开(公告)日：2018-05-24

申请号：US15806575

申请日：2017-11-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshiaki TSURUTA ,  Satoshi WATANABE ,  Hideyuki KUMEI ,  Shuya KAWAHARA ,  Kohei ODA

IPC: H01M8/04858 ,  H01M8/04537 ,  H01M16/00

Abstract: A fuel cell system according to one embodiment performs refresh control of an electrode catalyst of a fuel cell, by reducing a stack voltage as a voltage of the fuel cell to a refresh voltage at which the electrode catalyst is activated. The system includes the fuel cell that generates electric power by an electrochemical reaction using fuel gas and oxidation gas, a stack voltage sensor that sensors the stack voltage, and a controller that controls power of the fuel cell. When a high load demand that makes the stack voltage lower than a given voltage is made on the fuel cell, the controller causes the fuel cell to deliver power commensurate with the high load demand, and performs refresh control when the stack voltage becomes lower than the given voltage through the above control.

公开(公告)号：US20220200019A1

公开(公告)日：2022-06-23

申请号：US17507011

申请日：2021-10-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomotaka ISHIKAWA ,  Satoshi WATANABE ,  Kazushi AKAMATSU

IPC: H01M8/04029 ,  H01M8/0267 ,  H01M8/0258 ,  H01M8/04007

Abstract: A fuel cell system includes a plurality of fuel cell units each including a fuel cell, a fuel cell cooling system having a heat exchanger that exchanges heat between a primary-side coolant, and a secondary-side coolant flowing through the fuel cell, and a coolant pump that adjusts the flow rate of the secondary-side coolant, and a controller that controls the fuel cell, a cooling device, and a cooling system that supplies the primary-side coolant from the cooling device to each fuel cell unit. During stop of operation of the fuel cell system, the cooling device supplies the primary-side coolant having a temperature equal to or higher than a predetermined temperature to each fuel cell unit, and the controller activates the coolant pump to cause the secondary-side coolant to flow through the heat exchanger, in one or more fuel cell units in which the fuel cell has a possibility of freezing.

公开(公告)号：US20180108926A1

公开(公告)日：2018-04-19

申请号：US15725651

申请日：2017-10-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshiaki TSURUTA ,  Kohei ODA ,  Satoshi WATANABE ,  Hideyuki KUMEI ,  Shuya KAWAHARA

IPC: H01M8/04858 ,  H01M16/00 ,  H01M8/04746 ,  H01M8/04089

CPC classification number: H01M8/04953 ,  H01M8/04089 ,  H01M8/04223 ,  H01M8/04238 ,  H01M8/04753 ,  H01M8/04925 ,  H01M8/0494 ,  H01M10/48 ,  H01M16/006 ,  H01M2250/20 ,  Y02T90/32

Abstract: A fuel cell system of the present disclosure performs a first and a second catalyst activation process, and the first catalyst activation process is performed where a flow rate of the air supplied to the fuel cell by the air compressor is reduced to be less than that before the refresh control is performed while keeping an amount of a current drawn from the fuel cell by the fuel cell converter at the same value as that before the refresh control is performed, and the second catalyst activation process is performed where the value of the current drawn from the fuel cell by the fuel cell converter is increased to be greater than that before the refresh control is performed while keeping the flow rate of the air supplied to the fuel cell by the air compressor at the same value as that before the refresh control is performed.