公开(公告)号：US20250038235A1

公开(公告)日：2025-01-30

申请号：US18915955

申请日：2024-10-15

Applicant: DENSO CORPORATION

Inventor： Naoya WAKAYAMA ,  Jun KAWAMURA

IPC: H01M8/04828 ,  H01M8/04746

Abstract: A fuel cell system includes a fuel cell, a first actuator capable of adjusting a first state quantity indicating an internal state of the fuel cell, a second actuator capable of adjusting a second state quantity indicating the internal state of the fuel cell, and a control unit. The control unit is configured to perform a first control and a second control, the first control includes acquiring a present value of the first state quantity and controlling operation of the first actuator so that the acquired present value of the first state quantity approaches a predetermined first target value, and the second control includes acquiring a present value of the second state quantity and controlling operation of the second actuator so that the acquired present value of the second state quantity approaches a predetermined second target value.

公开(公告)号：US20250046842A1

公开(公告)日：2025-02-06

申请号：US18716418

申请日：2023-02-01

Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  DENSO CORPORATION

Inventor： Takao WATANABE ,  Norihiro FUKAYA ,  Naoyuki YAMADA ,  Naoya WAKAYAMA ,  Kohei KAWABATA

IPC: H01M8/04992 ,  H01M8/0432 ,  H01M8/04537 ,  H01M8/04664 ,  H01M8/10

Abstract: A condition-estimating device includes a first device that updates a parameter Pm[i] and an internal state Qn[i] included in a voltage estimation model of a polymer electrolyte fuel cell, a second device that successively acquires a current I[i] and a measured voltage value Vmes[i], a third device that calculates an estimated voltage value Vest[i] by using the voltage estimation model including the updated Pm[i] and Qn[i], and a fourth device that corrects a correction factor CF[i] used for the update of Pm[i] and/or Qn[i] so as to decrease |Vmes[i]−Vest[i]|. The fault-determining device includes a fault determination device that performs fault determination of a polymer electrolyte fuel cell by using Vest[i], Pm_est[i], and/or Qn_est[i]. The condition-estimating/fault-determining device includes such condition-estimating device and fault-determining device.

公开(公告)号：US20200217265A1

公开(公告)日：2020-07-09

申请号：US16735905

申请日：2020-01-07

Applicant: DENSO CORPORATION

Inventor： Yuichi AOTSUKA ,  Naoya WAKAYAMA

IPC: F02D41/38 ,  F02M47/02 ,  F02M63/00 ,  F02D41/40

Abstract: A fuel injection device includes a first driver for driving a first valve and a second driver for driving a second valve. A control device performs an open control of the first valve multiple times by using the first driver, for enabling multistage fuel injection from an injection hole in one fuel cycle of an internal combustion engine via a high pressure fuel passage. The control device performs an open-close control of the second valve by using the second driver during an open control of the first valve by using the first driver, for controlling an inclination of injection rate of the fuel injection. The control device stops an output of a drive signal to the second driver when detecting an overheat of a drive circuit based on a temperature detection result of a temperature sensor.