-
公开(公告)号：US20250164005A1
公开(公告)日：2025-05-22
申请号：US18841313
申请日：2022-09-08
Applicant: Hitachi Astemo, Ltd.
Inventor： Kenta SUZUKI , Takaki ITAYA , Kosaku ONO
Abstract: Provided is a vehicle drive system that reduces oil agitation loss which occurs in a reduction gear during vehicle startup, and that sufficiently sends a cooling oil to a motor to improve the reliability of the motor. This vehicle drive system 100a is characterized by comprising: an electric motor 1; a reduction gear 2; a reduction gear casing 2b that houses the reduction gear 2; an oil 8 that is accommodated in the reduction gear casing 2b; an oil storage unit vertically over the electric motor 1; a pump 3 that sends the oil 8 stored in a lower portion of the reduction gear 2 to the oil storage unit 5; a pipe 9 that connects the oil storage unit 5 and the electric motor 1; a valve 6 that is provided to the pipe 9 to control conduction/interruption of the pipe 9; and a control device 20 that controls the electric motor 1, the reduction gear 2, the pump 3, and the valve 6. This vehicle drive system is also characterized in that the control device 20 uses the valve 6 to control the starting/stopping of supply of the oil 8 from the oil storage unit 5 to the electric motor 1.
-
公开(公告)号：US20250154916A1
公开(公告)日：2025-05-15
申请号：US18838017
申请日：2023-02-06
Applicant: Hitachi Astemo, Ltd.
Inventor： Ryo MOCHIZUKI , Masaki KOBAYASHI
Abstract: Provided is an apparatus and a method for controlling an internal combustion engine such that emissions may not worsen during recovery from a fuel cut. An internal combustion engine control apparatus executes feedback control on the air-fuel ratio of an internal combustion engine. The control apparatus increases a supply of fuel, with the air-fuel ratio feedback stopped, when combustion restarts after a fuel cut of the internal combustion engine. The control apparatus sets the air-fuel ratio criteria based on a rich-side peak value of the air-fuel ratio obtained after the fuel supply increase starts. The control apparatus starts the air-fuel ratio feedback when the air-fuel ratio falls within the set air-fuel ratio criteria after the fuel supply increase.
-
公开(公告)号：US12301075B2
公开(公告)日：2025-05-13
申请号：US17777991
申请日：2020-11-04
Applicant: HITACHI ASTEMO, LTD.
Inventor： Kenichi Nakayama , Akira Toba , Hiromitsu Okamoto , Teruaki Higuchi , Zhi Jing , Satoshi Yamamura
Abstract: The reliability of a rotating electrical machine is improved. A method for manufacturing a stator used in a rotating electrical machine includes: a first step of arranging a first segment coil and a second segment coil to face each other; a second step of processing the first segment coil to generate a bridge part that comes into contact with the second segment coil; and a third step of joining the bridge part and the second segment coil by laser welding.
-
公开(公告)号：US12301061B2
公开(公告)日：2025-05-13
申请号：US18019058
申请日：2021-05-10
Applicant: Hitachi Astemo, Ltd.
Inventor： Masahiro Hori , Takeshi Tokuyama , Noriaki Hino , Masanori Sawahata
Abstract: An object of the present invention is to provide a structure capable of stably holding a bonded magnet into a magnet insertion part of a rotor core. A rotor of a rotating electrical machine includes a bonded magnet 112, an elastic member 113 having a bent part 113a, and a rotor core provided with a magnet storage part storing the bonded magnet 112 and the elastic member 113. The elastic member 113 is embedded in the bonded magnet 112 in a state where at least a part of the bent part 113a is exposed from the bonded magnet 112, and an exposed part 113c of the bent part 113a from the bonded magnet 112 comes into contact with an inner wall of the magnet storage part 114 and elastically deforms.
-
公开(公告)号：US12297784B2
公开(公告)日：2025-05-13
申请号：US18281240
申请日：2022-02-21
Applicant: Hitachi Astemo, Ltd.
Inventor： Yuya Shinozaki , Akira Kiyomura
Abstract: A control device for a variable compression ratio mechanism for changing a compression ratio of an internal combustion engine by rotating a control shaft connected to an output shaft of an actuator, wherein with respect to a reference position, the control device determines the rotation angle of the control shaft by sequentially integrating the output values of an angle sensor that detects the rotation angle of the output shaft of the actuator in a range of 0° to 360° such that the rotation angle approaches a target angle. When the internal combustion engine is stopped, the control device rotates the control shaft to a high-compression-ratio side and a low-compression-ratio side, respectively, toward a stopper mechanism that defines the rotatable range and compares the determined rotation angle and a reference operation angle to diagnose whether a failure has occurred in the variable compression ratio mechanism.
-
Patent Agency Ranking
公开(公告)号：US12296903B2
公开(公告)日：2025-05-13
申请号：US18368193
申请日：2023-09-14
Applicant: Hitachi Astemo, Ltd.
Inventor： Xiaoliang Zhu , Subrata Kumar Kundu , Paul Liu
Abstract: In some examples, a service computing device receives, from a vehicle computing device onboard a vehicle, a communication including sensor data obtained from at least one sensor onboard the vehicle. Based on the communication, the service computing device determines a transmission delay corresponding to a difference between a time when the vehicle sent the communication and a time when the communication was received. Based on the communication, the service computing device determines a trajectory of the vehicle on a travel route. Based on the sensor data, transmission delay, wind direction and magnitude, surrounding objects, and trajectory, the service computing device determines vehicle control information for the vehicle. The service computing device sends, to the vehicle, based at least on the vehicle control information, at least one instruction causing the vehicle to perform at least one control operation for traversing one or more locations associated with the trajectory of the vehicle.
-
公开(公告)号：US20250147749A1
公开(公告)日：2025-05-08
申请号：US18836908
申请日：2022-08-24
Applicant: HITACHI ASTEMO, LTD.
Inventor： Tatsuaki NAGAI , Hideyuki SAKAMOTO , Yuji FUKUSHIMA , Tsutomu KANEKO , Takaaki NOKAIDO
IPC: G06F8/65
Abstract: An object of the present invention is to obtain an update management system that makes it possible to perform writing and switching of a program in an ECU configuration having redundancy while a vehicle is traveling, even when the ECU configuration does not have a double-sided memory structure. An update management system of the present invention is mounted on a vehicle and includes: a plurality of arithmetic operation devices; and an update management device that controls the plurality of arithmetic operation devices. The plurality of arithmetic operation devices include at least a first arithmetic operation device and a second arithmetic operation device. The update management device determines whether the second arithmetic operation device is executing a redundant process while the vehicle is traveling, and when determining that the second arithmetic operation device is not executing the redundant process, the update management device restricts execution of the redundant process by the first arithmetic operation device and updates a program stored in the second arithmetic operation device.
-
公开(公告)号：US20250146451A1
公开(公告)日：2025-05-08
申请号：US18835914
申请日：2022-11-10
Applicant: Hitachi Astemo, Ltd.
Inventor： Koichi TSUKIO
IPC: F02D41/20
Abstract: Provided is an electronic control device that drives and controls a fuel injection valve, the electronic control device increasing a boost current of a booster circuit only in a scene where boosting energy needs to be increased by short-time boosting, and reducing the boost current of the booster circuit in other scenes. The electronic control device including; a booster circuit; a boost setting controller that holds boost control information of the booster circuit; a boost controller that controls an energizing current of the booster circuit based on a current setting value from the boost setting controller; and a fuel injection circuit that supplies current to a fuel injection valve using voltage generated by the booster circuit, in which the boost setting controller reduces a boost speed of the booster circuit when information on engine temperature is higher than a predetermined value.
-
公开(公告)号：US20250137415A1
公开(公告)日：2025-05-01
申请号：US18836144
申请日：2022-03-03
Applicant: Hitachi Astemo, Ltd.
Inventor： Daichi KAWAKAMI , Noriaki SUMISHA , Junpei KOGAWA
Abstract: An electromagnetic valve driving device that controls an energization period to a solenoid coil provided in a fuel injection valve and causes the fuel injection valve to inject fuel a plurality of times during one combustion cycle of an internal combustion engine, the electromagnetic valve driving device includes: a storage that stores a correction amount map indicating a relationship between an energization pause period from a completion time of a first-half energization period, which is the energization period for a first fuel injection in the one combustion cycle, to a start time of a later-half energization period, which is the energization period for next fuel injection, and a correction amount for the later-half energization period; an energization period correction unit that obtains the correction amount from a command value of the energization pause period based on the correction amount map and corrects the later-half energization period based on the obtained correction amount; and an energization controller that energizes the solenoid coil based on a later-half correction energization period that is the later-half energization period corrected by the energization period correction unit.
-
公开(公告)号：US20250136107A1
公开(公告)日：2025-05-01
申请号：US18834651
申请日：2022-07-28
Applicant: Hitachi Astemo, Ltd.
Inventor： Koichi UEMURA , Taku TAKAHAMA
Abstract: A vehicle control device that achieves preferred steering control characteristics of a driver while keeping lane tracing during lane keeping control. Included are: a lane shape detection unit that detects a lane shape around a vehicle; a steering torque detection unit that detects a steering torque of a driver who drives the vehicle; a lane keeping control unit that calculates a steering command for keeping within a lane based on the detected lane shape; and a steering control unit that controls vehicle steering based on the steering command from the lane keeping control unit, and the lane keeping control unit having a plurality of control characteristics including at least a first control characteristic and a second control characteristic selectable according to a preference of the driver, and selects the first or second control characteristic on the basis of switching information input in advance according to the preference of the driver.
-
-
-
-
-
-
-
-
-
Search Results
1893
records
(took 0.078 seconds)
