公开(公告)号：US20190145368A1

公开(公告)日：2019-05-16

申请号：US16308699

申请日：2017-06-15

Applicant: DENSO CORPORATION

Inventor： Takuro NAKAOKA ,  Akihiro IMURA ,  Mitsuru SHIBANUMA ,  Yuki KUBO ,  Minoru OKAMIYA ,  Suguru MIZUNO

IPC: F02N11/00 ,  F02N11/08 ,  F02N11/04 ,  F02N15/02 ,  F02N15/04

Abstract: A first controller includes a start control section and a passage determination section. After activating a second starter to start cranking, the start control section stops the operation of the second starter and starts the motor operation of the first starter at a predetermined timing. The passage determination section determines whether a predetermined passage conditional expression holds after cranking is started by the second starter. The start control section stops the operation of the second starter and starts the motor operation of the first starter if the passage conditional expression holds before the engine passes the first compression top dead center, regardless of whether the engine has passed the first compression top dead center.

公开(公告)号：US20190229667A1

公开(公告)日：2019-07-25

申请号：US16317230

申请日：2017-07-10

Applicant: DENSO CORPORATION

Inventor： Takuro NAKAOKA ,  Kiyoshi FUJII

IPC: H02P21/34 ,  H02P6/182 ,  H02P21/22 ,  H02P25/22

Abstract: A rotor position judging unit detects a rotor position by utilizing induced voltages generated at respective phases of an armature winding. While a field current flowing through a field winding rises toward a target value (while the field current temporally changes), induced voltages are generated at the respective phases of the armature winding by temporal differentiation of a magnetic flux which interlinks with the armature winding. The rotor position judging unit detects the rotor position (d-axis of a rotor) on a basis of a table containing combination of amplitude ratios and polarities of the induced voltages generated at the respective phases.

公开(公告)号：US20190032621A1

公开(公告)日：2019-01-31

申请号：US16073257

申请日：2017-01-25

Applicant: DENSO CORPORATION

Inventor： Yoshitomo TAKEUCHI ,  Atsuyuki HIRUMA ,  Akira YAMADA ,  Akihiro IMURA ,  Takuro NAKAOKA

IPC: F02N11/08 ,  F02D41/04 ,  F02N15/00

Abstract: A control apparatus controls the operation of a starter such that, after an idling stop is executed and before a request for starting an engine is subsequently issued, the control apparatus executes a preset which causes a pinion to engage a ring gear. A control apparatus controls the operation of a starter such that, after an idling stop is executed and before a request for starting an engine is subsequently issued, the control apparatus executes a preset which causes a pinion to engage a ring gear. It is determined that the preset condition has been cancelled, and the preset is again executed. In that case, the pinion is already engaged with the ring gear at the time point when a request for starting the engine is issued. In that way it is unnecessary for the control apparatus to push out the pinion after a start request is issued.

公开(公告)号：US20230354563A1

公开(公告)日：2023-11-02

申请号：US18217870

申请日：2023-07-03

Applicant: DENSO CORPORATION

Inventor： Shin YASUDA ,  Hiroshi TAKI ,  Takuro NAKAOKA

IPC: H05K7/20

CPC classification number: H05K7/20909 ,  H05K7/20927 ,  H05K7/2039 ,  H05K7/20272 ,  H05K7/20145

Abstract: In a power conversion apparatus, at least one intra-casing cooling passage is a passage through which a coolant for cooling at least a power converter flows, and is arranged in a casing. At least one extra-casing cooling passage communicates with the at least one intra-casing cooling passage and is drawn out from an inside of the casing. The at least one extra-casing cooling passage is disposed not to be in contact to the outer periphery of the casing. The power converter is arranged to be cooled by the coolant flowing through the at least one intra-casing cooling passage, and a heat exchanger and the casing are arranged to be subjected to cooling air, resulting in the heat exchanger and the casing being cooled by the cooling air.

公开(公告)号：US20170254310A1

公开(公告)日：2017-09-07

申请号：US15447849

申请日：2017-03-02

Applicant: DENSO CORPORATION

Inventor： Takuro NAKAOKA ,  Akihiro IMURA

IPC: F02N11/08 ,  F02N15/04 ,  F02N11/10 ,  F02N11/04 ,  F02N11/00 ,  F02D35/02

CPC classification number: F02N11/0833 ,  F02D35/02 ,  F02N11/006 ,  F02N11/04 ,  F02N11/0825 ,  F02N11/0844 ,  F02N11/101 ,  F02N15/04 ,  F02N2250/04 ,  F02N2300/104 ,  F02N2300/2011 ,  Y02T10/48

Abstract: A control device sets reverse rotation period as a cranking prohibition period, and when a start request of an engine is generated during reverse rotation period, cranking is started by driving either or both of the first starter and the second starter when it is detected that a crankshaft is shifted from reverse rotation to forward rotation based on an information of a rotation angle sensor. As a result, the delay from generation of the start request of the engine until cranking is started can be reduced, so that the starting time of the engine can be shortened.

公开(公告)号：US20170204828A1

公开(公告)日：2017-07-20

申请号：US15408539

申请日：2017-01-18

Applicant: DENSO CORPORATION

Inventor： Akihiro IMURA ,  Takuro NAKAOKA ,  Atsuyuki HIRUMA

IPC: F02N11/08 ,  F02N11/04

CPC classification number: F02N11/0844 ,  F02N11/04 ,  F02N2200/042 ,  F02N2300/104

Abstract: An engine start system has a rotating electrical machine, a starter motor, an engine ECU and an ISG controller. The rotating electrical machine is connected to an output shaft of an engine. The starter motor drives the engine to be restarted. The engine ECU controls the engine operation. The ISG controller instructs an inverter when the rotating electrical machine performs power running and regenerative power generation. The ISG controller communicates with the engine ECU, and adjusts the operation of the starter motor and the rotating electrical machine. When receiving an engine restart request, the ISG controller drives at least one of the starter motor and the rotating electrical machine so as to restart the engine.