公开(公告)号：US20190061739A1

公开(公告)日：2019-02-28

申请号：US16084246

申请日：2017-03-30

Applicant: MAZDA MOTOR CORPORATION

Inventor： Toru YOSHIOKA ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Yasunori TAKAHARA ,  Masaki CHIBA

IPC: B60W30/02

Abstract: There is provided a vehicle behavior control device capable of improving responsivity of a vehicle behavior and a linear feeling with respect to a steering wheel operation without causing a driver to experience a strong feeling of intervention of the control, and capable of controlling behavior in such a manner as to improve stability of the vehicle attitude and riding comfort. The device includes a PCM which acquires a steering speed relating to a jerk in a width direction of the vehicle, sets a torque reduction flag, indicative of whether or not a condition for allowing reduction of an output torque of an engine is satisfied, based on the steering speed, and starts to reduce a torque when the torque reduction flag is set to True indicative of a state in which the condition for allowing reduction of the torque is satisfied.

公开(公告)号：US20180281780A1

公开(公告)日：2018-10-04

申请号：US15763696

申请日：2016-12-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Chikako OHISA

IPC: B60W30/045 ,  B60W40/114 ,  B62D6/00 ,  F02D17/02

CPC classification number: B60W30/045 ,  B60W40/114 ,  B60W2540/10 ,  B60W2710/0666 ,  B60W2710/105 ,  B62D6/00 ,  B62D6/003 ,  F02D17/02

Abstract: Disclosed is a vehicle control device which is applied to a vehicle equipped with an engine (10) and an engine torque adjustment mechanism for adjusting an engine torque. The control device comprises a PCM (50) configured, upon satisfaction of a condition that the vehicle is traveling and a steering angle-related value relevant to a steering angle of a steering device is increasing, to control the engine torque adjustment mechanism to reduce the engine torque, so as to execute a vehicle attitude control for generating vehicle deceleration. The PCM (50) is configured, upon satisfaction of a vehicle attitude control-terminating condition for terminating the vehicle attitude control, to control the engine torque adjustment mechanism to restore the engine torque to an original level of torque before the execution of the vehicle attitude control. The PCM (50) is further configured to gradually ease the vehicle attitude control-terminating condition, as the number of times of combustion per unit time in the engine (10) becomes smaller.

公开(公告)号：US20190193723A1

公开(公告)日：2019-06-27

申请号：US16208361

申请日：2018-12-03

Applicant: MAZDA MOTOR CORPORATION

Inventor： Osamu SUNAHARA ,  Daisuke UMETSU ,  Yasunori TAKAHARA ,  Hirofumi FUJISHITA ,  Kazunori TSUMURA

IPC: B60W30/045 ,  B60T8/1755 ,  B60T8/24

CPC classification number: B60W30/045 ,  B60T8/17551 ,  B60T8/17555 ,  B60T8/245 ,  B60T8/246 ,  B60T2201/16 ,  B60T2220/03 ,  B60T2230/04 ,  B60W2520/14 ,  B60W2540/18

Abstract: The vehicle behavior control device comprised a drive control system 4 and a brake control system 18, wherein a PCM 14 is configured, when steering angle is increasing, to set an additional deceleration to be added to the vehicle, and control the drive control system 4 to attain the additional deceleration, and, when the steering angle is decreasing, to set a yaw moment oriented in a direction opposite to that of a yaw rate being generated in the vehicle, as a target yaw moment to be applied to the vehicle, and control the brake control system 18 to apply the target yaw moment to the vehicle. Particularly, when the steering angle is 0, PCM 14 is configured to set the target yaw moment to 0 so as to terminate the control via the brake control system 18.

公开(公告)号：US20180086349A1

公开(公告)日：2018-03-29

申请号：US15713330

申请日：2017-09-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Takahiro KAWAMURA ,  Chikako OHISA

IPC: B60W40/105 ,  B60W40/10 ,  F02P5/15

CPC classification number: B60W40/105 ,  B60W10/02 ,  B60W10/04 ,  B60W40/10 ,  B60W2510/0275 ,  B60W2510/0657 ,  B60W2520/10 ,  B60W2520/14 ,  B60W2520/16 ,  B60W2520/18 ,  B60W2540/10 ,  B60W2540/18 ,  F02P5/15 ,  F02P5/1504

Abstract: The vehicle control device is designed to control a vehicle equipped with an engine (10), and an automatic transmission (200) comprising a torque converter (202) with a lockup clutch (202f). The vehicle control device comprises a controller (50) configured to perform control of changing an engagement degree of the lockup clutch (202f) and to, when such a condition that the vehicle is traveling and a steering angle-related value as a parameter related to a steering angle of a steering apparatus of the vehicle increases is satisfied, reduce an output toque of the engine (10) to generate a deceleration of the vehicle to thereby execute a torque reduction control for controlling an attitude of the vehicle. The controller (50) is configured to reduce the output toque of the engine (10), in accordance with the engagement degree of the lockup clutch (202f) controlled by a lockup control.

公开(公告)号：US20170254281A1

公开(公告)日：2017-09-07

申请号：US15446348

申请日：2017-03-01

Applicant: MAZDA MOTOR CORPORATION

Inventor： Chikako OHISA ,  Osamu SUNAHARA ,  Daisuke UMETSU ,  Takuo HIRANO ,  Kunihiro SHISHIMA ,  Takahiro KAWAMURA ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Takeatsu ITO

IPC: F02D41/02 ,  F02D9/02 ,  F16H63/50

CPC classification number: F02D41/023 ,  B60W2540/18 ,  F02D9/02 ,  F02D11/105 ,  F02D41/0002 ,  F02D2200/501 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2250/26 ,  F16H63/502 ,  Y02T10/42

Abstract: The engine control device comprises a basic target torque-deciding part for deciding a basic target torque based on a driving state of a vehicle, a torque reduction amount-deciding part for deciding a torque reduction amount based on a steering wheel operation state, an TCM for deciding a torque-down demand amount, based on a driving state of the vehicle other than the steering wheel operation state, and a final target torque-deciding part for deciding a final target torque, based on the decided basic target torque, the decided torque reduction amount and the decided torque-down demand amount, wherein the final target torque-deciding part is operable, when there is a torque-down demand, to restrict a change in the final target torque corresponding to a change in the torque reduction amount.

公开(公告)号：US20210024137A1

公开(公告)日：2021-01-28

申请号：US16930230

申请日：2020-07-15

Applicant: MAZDA MOTOR CORPORATION

Inventor： Hiroyuki OKAMOTO ,  Fumihiro KUROHARA ,  Norio ASANO ,  Hiroto KIDO ,  Yasunori TAKAHARA

IPC: B62D21/15 ,  B60K8/00 ,  B60G7/00 ,  B62D21/11

Abstract: A subframe structure of a front suspension that leads a subframe and a vehicle driving apparatus to the lower side after separation of a rear portion of the subframe due to a frontal collision without increasing weight and parts. A subframe structure of the front suspension provides a subframe that supports a vehicle driving apparatus in a mounting manner, and a rear portion of the subframe is mounted on a lower portion of a vehicle body via a fastening member. Fastening between the subframe and the fastening member is configured such that the rear portion of the subframe is separated when a collision load to a vehicle rear side is applied to the subframe. A leading guide portion that abuts against the fastening member and leads the subframe to a lower side after separation from the fastening member is integrally formed on the rear portion of the subframe.

公开(公告)号：US20210024135A1

公开(公告)日：2021-01-28

申请号：US16929219

申请日：2020-07-15

Applicant: MAZDA MOTOR CORPORATION

Inventor： Hiroyuki OKAMOTO ,  Fumihiro KUROHARA ,  Ippei KURODA ,  Yasunori TAKAHARA

IPC: B62D21/11 ,  B62D21/15

Abstract: A front suspension apparatus in which a front side of a suspension arm can be cut off from a subframe at the time of a small overlap collision without a complication of structure and formability. A front suspension apparatus in which a lower arm from which a front wheel is suspended is provided, and a front arm portion and a rear arm portion of the lower arm are axially supported by axially supporting portions of a subframe is characterized in that an axially supporting portion of the front arm portion is joined to the subframe at a joined portion extending in a vehicle width direction, a joined portion extending in an up-down direction, and a joined portion extending in a front-rear direction, and a joining strength of a joined portion in the front-rear direction is lower than a joining strength of the joined portion in the up-down direction.

公开(公告)号：US20180347477A1

公开(公告)日：2018-12-06

申请号：US15515101

申请日：2016-09-09

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Chikako OHISA

IPC: F02D17/02 ,  F02D29/02 ,  F02D41/12 ,  F02D45/00

CPC classification number: F02D17/02 ,  F02D29/02 ,  F02D41/12 ,  F02D45/00 ,  F02P5/15

Abstract: A control device for a vehicle includes: an engine (10); an engine torque adjustment mechanism for adjusting an output torque of the engine; and a PCM (50) configured, upon satisfaction of a condition that the vehicle is traveling, and that a steering angle-related value pertaining to a steering angle of a steering system is increasing, to control the engine torque adjustment mechanism to reduce the engine torque to thereby generate deceleration of the vehicle so as to control vehicle attitude. The PCM (50) is configured to set a time period from the satisfaction of the condition through until start of reduction in the engine torque, such that it becomes longer, as the number of times of combustion per unit time in the engine becomes larger, and to control the engine torque adjustment mechanism to start to reduce the engine torque when the set time period has elapsed.

公开(公告)号：US20180345977A1

公开(公告)日：2018-12-06

申请号：US15515115

申请日：2016-09-09

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Chikako OHISA

IPC: B60W30/18 ,  F02D41/12 ,  F02D41/00

CPC classification number: B60W30/18145 ,  B60K28/10 ,  B60W30/02 ,  B60W2510/0638 ,  B60W2540/10 ,  B60W2540/18 ,  B60W2710/0666 ,  B60W2710/0672 ,  F02D17/02 ,  F02D29/02 ,  F02D41/0087 ,  F02D41/12 ,  F02D2200/101 ,  F02D2200/60 ,  F02P5/15

Abstract: A control device for a vehicle includes: an engine (10); an engine torque adjustment mechanism; and a PCM (50) configured, upon satisfaction of a condition that the vehicle is traveling and a steering angle-related value is increasing, to control the engine torque adjustment mechanism to reduce the engine torque to thereby execute a vehicle attitude control for generating deceleration of the vehicle, and, upon satisfaction of a given terminating condition for terminating the vehicle attitude control, to restore the reduced engine output torque to an original state before the execution of the vehicle attitude control. The PCM (50) sets a time period from the satisfaction of the terminating condition through until start of restoration of the engine torque, such that it becomes longer as the number of times of combustion per unit time becomes larger, and starts to restore the engine torque when the set time period has elapsed.

公开(公告)号：US20180345975A1

公开(公告)日：2018-12-06

申请号：US15515054

申请日：2016-09-09

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Chikako OHISA ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Yasunori TAKAHARA ,  Daisaku OGAWA

IPC: B60W30/18 ,  F02D41/12 ,  F02D41/00

CPC classification number: B60W30/18145 ,  B60W30/02 ,  B60W30/045 ,  B60W30/18063 ,  B60W30/18172 ,  B60W2510/0638 ,  B60W2510/0657 ,  B60W2540/18 ,  B60W2710/0666 ,  F02D41/0087 ,  F02D41/021 ,  F02D41/12 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2200/50 ,  F02D2200/60 ,  F02D2250/21

Abstract: A control device for a vehicle includes: an engine (10); an engine torque adjustment mechanism; and a PCM (50) configured to execute vehicle attitude control for, upon satisfaction of a vehicle attitude control executing condition that the vehicle is traveling and a steering angle-related value is increasing, reducing the engine torque to thereby generate deceleration of the vehicle. The PCM (50) is configured, upon satisfaction of a given terminating condition for terminating the vehicle attitude control, to control the engine torque adjustment mechanism to restore the reduced engine torque to an original state before the execution of the vehicle attitude control. The PCM (50) sets a rate of change in the engine output torque being restored, such that it becomes larger as the number of times of combustion per unit time becomes smaller, and restores the engine torque according to the rate of change set in the above manner.