公开(公告)号：US10688999B2

公开(公告)日：2020-06-23

申请号：US15701652

申请日：2017-09-12

Applicant: Mazda Motor Corporation

Inventor： Keiichi Hiwatashi ,  Yasunori Takahara ,  Daisaku Ogawa ,  Daisuke Umetsu ,  Osamu Sunahara ,  Chikako Ohisa

IPC: B60W30/188 ,  F02D41/02 ,  F02D41/00 ,  F02D11/10 ,  F02D37/02 ,  F02D41/26

Abstract: A vehicle control device includes a drive source for generating torque as driving force that causes a vehicle to travel, a drive source control mechanism for controlling the torque generation by the drive source, a driving force transmission mechanism for transmitting the torque to vehicle wheels, an engageable element provided in the transmission mechanism, and a processor configured to execute an engagement state change control in which an engagement state of the engageable element is changed, a vehicle attitude controlling module for controlling attitude of the vehicle by driving the drive source control mechanism to reduce the torque so as to decelerate the vehicle, when a condition is satisfied, the condition being that the vehicle is traveling and a steering angle related value increases, and an engagement state change restricting module for restricting the execution of the engagement state change control while the vehicle attitude control is executed.

公开(公告)号：US20190100210A1

公开(公告)日：2019-04-04

申请号：US16127529

申请日：2018-09-11

Applicant: Mazda Motor Corporation

Inventor： Yasumasa Imamura ,  Osamu Sunahara ,  Daisuke Umetsu ,  Naoki Nobutani

IPC: B60W30/18 ,  B60K23/08 ,  B60W10/06 ,  B60W10/119

Abstract: The vehicle driving force control device comprises: a behavior control mechanism for reducing a driving force of an engine according to a steering speed; a driving force distribution mechanism for distributing the driving force of the engine to rear road wheels; and an ECU for controlling the mechanisms. The behavior control mechanism reduces the driving force by a target torque reduction amount set based on the steering speed, to thereby generate a deceleration, and the driving force distribution mechanism distributes the driving force to the front road wheels and the rear road wheels based on a distribution rate set for the rear road wheels depending on a traveling state, and the ECU corrects the distribution rate based on the target torque reduction amount during cornering of the vehicle.

公开(公告)号：US10220838B2

公开(公告)日：2019-03-05

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

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：US10220837B2

公开(公告)日：2019-03-05

申请号：US15634823

申请日：2017-06-27

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yasunori Takahara ,  Tomoji Izumi ,  Daisuke Umetsu ,  Osamu Sunahara ,  Masaki Chiba

IPC: B60W30/045 ,  B60W10/04 ,  B60W10/20 ,  B62D5/04 ,  B60W30/02

Abstract: A vehicle behavior control device for controlling a vehicle equipped with a steering apparatus comprises: a PCM operable to acquire a steering speed in the steering apparatus, and, when the steering speed becomes equal to or greater than a given threshold (TS1) which is greater than 0, to reduce a driving force for the vehicle according to the steering speed, wherein the steering apparatus comprises a steering shaft coupled to the steering wheel and rotatable together with the steering wheel, wherein the steering shaft has a torsion bar whose torsional rigidity about a rotational axis of the steering shaft is less than a remaining portion of the steering shaft. The steering speed acquisition section is configured to acquire the steering speed of the steering apparatus at a position on the side of the front road wheels with respect to the low rigidity portion.

公开(公告)号：US10151259B2

公开(公告)日：2018-12-11

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 ,  F02D11/10 ,  F02D41/00

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：US20180072317A1

公开(公告)日：2018-03-15

申请号：US15701652

申请日：2017-09-12

Applicant: Mazda Motor Corporation

Inventor： Keiichi Hiwatashi ,  Yasunori Takahara ,  Daisaku Ogawa ,  Daisuke Umetsu ,  Osamu Sunahara ,  Chikako Ohisa

IPC: B60W30/188

CPC classification number: B60W30/1882 ,  B60W2520/10 ,  B60W2520/14 ,  B60W2710/0605 ,  B60W2710/0666 ,  F02D11/105 ,  F02D37/02 ,  F02D41/0005 ,  F02D41/021 ,  F02D41/26 ,  F02D2041/002 ,  F02D2200/602 ,  F02D2250/18 ,  Y02T10/42

Abstract: A vehicle control device includes a drive source for generating torque as driving force that causes a vehicle to travel, a drive source control mechanism for controlling the torque generation by the drive source, a driving force transmission mechanism for transmitting the torque to vehicle wheels, an engageable element provided in the transmission mechanism, and a processor configured to execute an engagement state change control in which an engagement state of the engageable element is changed, a vehicle attitude controlling module for controlling attitude of the vehicle by driving the drive source control mechanism to reduce the torque so as to decelerate the vehicle, when a condition is satisfied, the condition being that the vehicle is traveling and a steering angle related value increases, and an engagement state change restricting module for restricting the execution of the engagement state change control while the vehicle attitude control is executed.

公开(公告)号：US20170145940A1

公开(公告)日：2017-05-25

申请号：US15338106

申请日：2016-10-28

Applicant: Mazda Motor Corporation

Inventor： Chikako Ohisa ,  Osamu Sunahara ,  Daisuke Umetsu ,  Takahiro Kawamura ,  Yasunori Takahara ,  Daisaku Ogawa ,  Takeatsu Ito

IPC: F02D41/10 ,  F02D41/26

CPC classification number: F02D11/105 ,  B60W30/16 ,  F02D37/02 ,  F02D41/021 ,  F02D2200/501 ,  F02D2200/60 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2250/26

Abstract: An engine control device for controlling an engine based on a vehicle operating state is provided, that includes a basic target torque determinator for setting a vehicle target acceleration based on an accelerator pedal operation and determining a basic target engine torque based on the vehicle target acceleration, a torque reduction demand determinator for determining whether an engine torque reduction is demanded based on the vehicle operating state other than the accelerator pedal operation, a torque reduction amount determinator for determining an engine torque reduction amount according to the operating state when the torque reduction is demanded, a final target torque determinator for determining as a final target torque an engine torque calculated by subtracting the torque reduction amount from the basic target torque when the torque reduction is demanded, and an engine controller for controlling the engine so as to output the final target torque.