公开(公告)号：US10266173B2

公开(公告)日：2019-04-23

申请号：US15342857

申请日：2016-11-03

Applicant: MAZDA MOTOR CORPORATION

Inventor： Osamu Sunahara ,  Daisuke Umetsu

IPC: B60W30/045

Abstract: The vehicle behavior control device is designed to control a behavior of a vehicle having steerable front road wheels. The vehicle behavior control device comprises a PCM configured to perform control to reduce a driving force for the vehicle according to a steering speed of the vehicle, wherein the PCM is operable to reduce a change rate during increasing of a reduction amount of the driving force according to the steering speed of the vehicle, to a smaller value, as a steering wheel angle of the vehicle becomes larger.

公开(公告)号：US10246085B2

公开(公告)日：2019-04-02

申请号：US15710459

申请日：2017-09-20

Applicant: MAZDA MOTOR CORPORATION

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

IPC: B60W30/02 ,  B60W30/045 ,  B62D6/00 ,  B62D15/02 ,  B60K1/00

Abstract: The vehicle behavior control device comprises: a steer-by-wire type steering apparatus (6) having a steering wheel-side mechanism and a road wheel-side mechanism which are mechanically separated from each other; and a controller (8) performs a driving force reduction control of reducing a driving force for a vehicle (1) when a steering speed in the steering apparatus (6) becomes equal to or greater than a given threshold. The steering apparatus (6) comprises a first steering angle sensor (14) provided in the steering wheel-side mechanism and a second steering angle sensor (19) provided in the road wheel-side mechanism. The controller (8) performs the driving force reduction control based on the steering speed in accordance with a sum of an output of the first steering angle sensor (14) and an output of the second steering angle sensor (19).

公开(公告)号：US20180266345A1

公开(公告)日：2018-09-20

申请号：US15901670

申请日：2018-02-21

Applicant: Mazda Motor Corporation

Inventor： Daisaku Ogawa ,  Daisuke Umetsu ,  Osamu Sunahara ,  Yasunori Takahara ,  Yuichiro Akiya ,  Chikako Ohisa ,  Atsushi Yamasaki ,  Keiichi Hiwatashi

IPC: F02D41/00 ,  B62D15/02

CPC classification number: F02D41/0087 ,  B60W30/02 ,  B60W30/18145 ,  B60W2510/0638 ,  B60W2540/18 ,  B60W2710/0666 ,  B60Y2300/1815 ,  B62D15/021 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/021 ,  F02D2200/101 ,  F02D2200/50 ,  F02D2250/18

Abstract: A vehicle control device is provided, which includes an engine, an engine control mechanism configured to control torque generated by the engine, a steering device, and a processor. The processor determines whether a vehicle is traveling and a steering angle related value that is related to a steering angle of the steering device increases, executes a control of the engine control mechanism to reduce the torque when the vehicle is determined to be traveling and the steering angle related value is determined to increase, determines whether a combustion frequency of the engine per unit time is lower than a given value, executes the control for reducing the torque when the combustion frequency is determined to be higher than the given value, and prevents the execution of the control for reducing the torque when the combustion frequency is determined to be lower than the given value.

公开(公告)号：US20180265118A1

公开(公告)日：2018-09-20

申请号：US15899688

申请日：2018-02-20

Applicant: Mazda Motor Corporation

Inventor： Daisaku Ogawa ,  Daisuke Umetsu ,  Osamu Sunahara ,  Yasunori Takahara ,  Yuichiro Akiya ,  Chikako Ohisa ,  Atsushi Yamasaki ,  Keiichi Hiwatashi

IPC: B62D5/04 ,  G05D1/08 ,  B60W10/06 ,  B60W30/18

CPC classification number: B62D5/0463 ,  B60W10/06 ,  B60W30/18 ,  B60W2510/0661 ,  G05D1/08

Abstract: A vehicle control device is provided, which includes an engine, an engine control mechanism configured to control torque generated by the engine, a processor configured to execute a vehicle attitude controlling module to control attitude of a vehicle by controlling the engine control mechanism to reduce the torque so as to decelerate the vehicle, when a condition that the vehicle is traveling and a steering angle related value that is related to a steering angle of a steering device increases is satisfied, and a torque reduction amount setting module to set the reduction amount of the torque to be larger as a combustion frequency of the engine per unit time decreases. The vehicle attitude controlling module controls the engine control mechanism to reduce the torque based on the set reduction amount.

公开(公告)号：US09744967B2

公开(公告)日：2017-08-29

申请号：US15342820

申请日：2016-11-03

Applicant: MAZDA MOTOR CORPORATION

Inventor： Daisuke Umetsu ,  Osamu Sunahara

IPC: B60W30/045 ,  B60W10/04

CPC classification number: B60W30/045 ,  B60W10/04 ,  B60W10/06 ,  B60W30/02 ,  B60W30/18145 ,  B60W2510/182 ,  B60W2510/202 ,  B60W2520/10 ,  B60W2520/12 ,  B60W2520/125 ,  B60W2520/14 ,  B60W2520/26 ,  B60W2540/10 ,  B60W2540/18 ,  B60W2710/0605 ,  B60W2710/0666 ,  B60W2720/106 ,  B60W2720/125 ,  B60W2720/14 ,  B60W2720/20

Abstract: The vehicle behavior control device comprises a PCM configured to decide a target additional deceleration. The PCM is operable: to correct the target additional deceleration in such a manner that it is reduced by multiplying the target additional deceleration by a coefficient K1 set according to a vehicle speed, a coefficient K2 set according to a steering wheel angle, a coefficient K3 set according to an accelerator position and a coefficient K4 decided according to a required deceleration; when a value derived by multiplying the target additional deceleration by K1 and K2 is less than a threshold DT, to stop a torque reduction control; and, when the value derived by multiplying the target additional deceleration by K1 and K2 is equal to or greater than DT, and a value derived by multiplying the target additional deceleration by K3 and K4 is less than DT, to maintain the torque reduction control.

公开(公告)号：US12049216B2

公开(公告)日：2024-07-30

申请号：US17273719

申请日：2019-09-04

Applicant: MAZDA MOTOR CORPORATION ,  IKUTOKU GAKUEN

Inventor： Takatoshi Tsukano ,  Shohei Yamada ,  Daisuke Umetsu ,  Fuminori Kato ,  Osamu Sunahara ,  Masato Abe ,  Makoto Yamakado ,  Yoshio Kano ,  Kazuki Sato

IPC: B60W30/045 ,  B60W10/04 ,  B60W10/18 ,  B60W10/20

CPC classification number: B60W30/045 ,  B60W10/04 ,  B60W10/18 ,  B60W10/20 ,  B60W2520/06 ,  B60W2540/18

Abstract: A vehicle control method is applied to a vehicle 1 in which a front wheel 2 is driven by an engine 4, and the method includes a basic torque setting step of setting basic torque to be generated by the engine 4, based on an operational state of the vehicle 1; a deceleration torque setting step of setting deceleration torque, based on an increase in steering angle of a steering apparatus 5 mounted on the vehicle 1; a torque generation step of controlling the engine 4 so that torque based on the basic torque and the deceleration torque is generated; and a deceleration torque changing step of changing the deceleration torque, based on a vehicle-width-direction mounting position of a steering wheel 6 and an operation direction of the steering wheel 6 when the steering angle is increased. Thus, vehicle posture control is performed in consideration of the vehicle-width-direction mounting position of the steering wheel 6 and the operation direction of the steering wheel 6, so that a driver fatigue reduction effect of the vehicle posture control can be secured appropriately.

公开(公告)号：US11827211B2

公开(公告)日：2023-11-28

申请号：US17648760

申请日：2022-01-24

Applicant: Mazda Motor Corporation

Inventor： Daisaku Ogawa ,  Osamu Sunahara ,  Daisuke Umetsu

IPC: B60W30/045

CPC classification number: B60W30/045 ,  B60W2540/18 ,  B60W2710/083 ,  B60W2720/106

Abstract: A control system for a vehicle is provided, which includes a driving force source configured to generate torque for driving drive wheels, a steering wheel, a steering angle sensor, and a controller. Based on the detected steering angle, the controller reduces the driving torque to add deceleration to the vehicle when the steering wheel is being turned in one direction, and increases the torque to add acceleration when the steering wheel is being turned back in the other direction. The controller controls the torque, when the steering wheel is being turned in the returning direction from a state where it is turned in the one direction, so as to add forward acceleration until the steering wheel returns to a neutral position, and when the steering wheel is then being turned in the other direction after passing through the neutral position, so as not to add the forward acceleration.

公开(公告)号：US20220234571A1

公开(公告)日：2022-07-28

申请号：US17648760

申请日：2022-01-24

Applicant: Mazda Motor Corporation

Inventor： Daisaku Ogawa ,  Osamu Sunahara ,  Daisuke Umetsu

IPC: B60W30/045

Abstract: A control system for a vehicle is provided, which includes a driving force source configured to generate torque for driving drive wheels, a steering wheel, a steering angle sensor, and a controller. Based on the detected steering angle, the controller reduces the driving torque to add deceleration to the vehicle when the steering wheel is being turned in one direction, and increases the torque to add acceleration when the steering wheel is being turned back in the other direction. The controller controls the torque, when the steering wheel is being turned in the returning direction from a state where it is turned in the one direction, so as to add forward acceleration until the steering wheel returns to a neutral position, and when the steering wheel is then being turned in the other direction after passing through the neutral position, so as not to add the forward acceleration.

公开(公告)号：US11041450B2

公开(公告)日：2021-06-22

申请号：US16489384

申请日：2018-03-09

Applicant: Mazda Motor Corporation

Inventor： Daisaku Ogawa ,  Osamu Sunahara ,  Yasunori Takahara ,  Chikako Ohisa ,  Yuichiro Akiya ,  Atsushi Yamasaki ,  Keiichi Hiwatashi ,  Daisuke Umetsu

IPC: F02D17/02 ,  B60W10/06 ,  F02D41/00

Abstract: A vehicle control device includes an engine 10 capable of switching between reduced-cylinder operation and all-cylinder operation, an engine control mechanism that controls an engine torque, and a PCM 50 that executes vehicle posture control for generating vehicle deceleration by controlling the engine control mechanism to reduce the engine torque upon satisfaction of a condition that a vehicle is travelling and a steering angle-related value related to a steering angle of a steering device increases. In addition, this PCM 50 permits the execution of the vehicle posture control when an engine rotation speed is more than or equal to a first rotation speed Ne1 and permits the execution of the reduced-cylinder operation of the engine 10 when the engine rotation speed is more than or equal to a second rotation speed Ne2 that is more than the first rotation speed Ne1.

公开(公告)号：US10850726B2

公开(公告)日：2020-12-01

申请号：US16084157

申请日：2017-03-30

Applicant: MAZDA MOTOR CORPORATION

Inventor： Toru Yoshioka ,  Daisuke Umetsu ,  Osamu Sunahara ,  Yasunori Takahara ,  Masaki Chiba

IPC: B60W30/045

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, at the same time, capable of controlling behavior of a vehicle in such a manner as to also improve stability of the vehicle attitude and riding comfort. In a vehicle behavior control device applied to a vehicle 1 having steerable front road wheels 2, the vehicle behavior control device includes a PCM 14 which acquires a steering speed of the vehicle, and increases a pitch angle in such a direction that a front portion of the vehicle dips when the steering speed becomes equal to or greater than a given threshold TS1 which is greater than zero.