公开(公告)号：US20180345793A1

公开(公告)日：2018-12-06

申请号：US15968891

申请日：2018-05-02

Applicant: DENSO CORPORATION

Inventor： Masaki NISHIYAMA ,  Hirofumi YAMASHITA

IPC: B60L3/00 ,  H02P29/68

Abstract: An inverter ECU is applied to a hybrid vehicle having an engine and a motor generator as drive power source and a motor generator control system. A drive control part generates drive signals for an inverter based on torque request to the motor generator. A temperature information acquiring part acquires an element temperature value and a cooling water temperature value as an inverter temperature value. An abnormality detection part detects whether the inverter temperature value is within a diagnosable temperature range, and performs abnormality detection for the motor generator control system when the inverter temperature value is within the diagnosable temperature range. When the inverter temperature value is not placed within the diagnosable temperature range, the energy supplied to the inverter is adjusted to move the inverter temperature value into the diagnosis allowable temperature range to correctly perform the abnormality detection.

公开(公告)号：US20240331467A1

公开(公告)日：2024-10-03

申请号：US18607437

申请日：2024-03-16

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shogo WATANABE ,  Tokuya INAGAKI ,  Ryosuke MURAKAMI ,  Hirofumi YAMASHITA ,  Shinnosuke SUGAWARA ,  Takeshi MATSUI

IPC: G07C5/08 ,  G07C5/00

CPC classification number: G07C5/085 ,  G07C5/008

Abstract: A log management device acquires an alive monitoring log indicating that a security sensor of an electronic control unit mounted on a vehicle is operating; records acquisition of the alive monitoring log in an alive monitoring table; identifies an unacquired alive monitoring log, and records, in the alive monitoring table, an unacquired period during which the unacquired alive monitoring log is not acquired; and invalidates a record of the unacquired alive monitoring log in the alive monitoring table when the unacquired period of the unacquired alive monitoring log is equal to or longer than a predetermined period.

公开(公告)号：US20170141716A1

公开(公告)日：2017-05-18

申请号：US15235605

申请日：2016-08-12

Applicant: DENSO CORPORATION

Inventor： Xuezhi HE ,  Masaki NISHIYAMA ,  Hirofumi YAMASHITA

IPC: H02P29/68 ,  H02P27/06 ,  H02P25/03

CPC classification number: H02P29/68 ,  H02P25/03 ,  H02P27/06 ,  H02P29/60

Abstract: A motor-generator control part controls driving of a motor-generator, which is a drive power source of a vehicle. A torque limitation part of the MG control part limits a torque of the motor-generator when an element temperature indicating a system temperature increases to be higher than a limitation starting temperature. The torque limitation part continues the torque limitation, which was performed when the element temperature was at a peak temperature, until a limitation continuation period elapses, when the element temperature changes from increasing to decreasing as a result of limiting the torque of the motor-generator. Thus torque variation is suppressed while also suppressing overheating of a motor-generator driving system.

公开(公告)号：US20160121755A1

公开(公告)日：2016-05-05

申请号：US14926346

申请日：2015-10-29

Applicant: DENSO CORPORATION

Inventor： Masaki NISHIYAMA ,  Hirofumi YAMASHITA

IPC: B60L15/20 ,  B60L11/04

CPC classification number: B60L15/2045 ,  B60L3/003 ,  B60L11/04 ,  B60L15/20 ,  B60L15/2081 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2240/423 ,  B60L2240/525 ,  B60L2240/80 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275

Abstract: A control apparatus is provided in a rotary electric machine driving system that includes a rotary electric machine for a vehicle and a control unit that controls driving of the rotary electric machine. The apparatus includes a malfunction determination section determining whether or not a system malfunction that requires torque limitation has occurred, a to-be-avoided state determination section determining whether or not the vehicle is in a to-be-avoided state, a torque limitation section limiting an output torque outputted from the rotary electric machine to a limiting torque smaller than a command torque, when the system malfunction is determined to have occurred and the vehicle is not in the to-be-avoided state, and a torque limitation relaxation section permitting the output torque to be a limitation relaxation torque larger than the limiting torque, when the system malfunction is determined to have occurred and the vehicle is in the to-be-avoided state.

Abstract translation: 一种控制装置设置在包括车辆用旋转电机的旋转电机驱动系统和控制旋转电机的驱动的控制单元中。 该装置包括确定是否发生了需要扭矩限制的系统故障的故障判定部，确定车辆是否处于待避免状态的避免状态判定部，转矩限制部 当确定已经发生系统故障并且车辆不处于不能避免的状态时，限制从旋转电机输出的输出转矩到小于指令转矩的限制转矩，并且转矩限制放松部分允许 当确定发生系统故障并且车辆处于待避免状态时，输出转矩成为大于限制转矩的限制松弛转矩。