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公开(公告)号：US11772633B2
公开(公告)日：2023-10-03
申请号：US17273723
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 , B60W2510/20
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; an acceleration torque setting step of setting acceleration torque, based on a reduction 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 acceleration torque is generated; and an acceleration torque changing step of changing the acceleration 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 reduced. 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.
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公开(公告)号：US20220001749A1
公开(公告)日：2022-01-06
申请号：US17356137
申请日：2021-06-23
Applicant: Mazda Motor Corporation
Inventor： Daisaku Ogawa , Daisuke Umetsu , Shinya Morishita
Abstract: A vehicle driving system that can suppress a difference in effect of vehicle attitude control between the cases where a friction braking force is applied and not applied, is provided. The system includes a rotating electric machine, a battery, a steering apparatus, a steering angle sensor, a brake actuator that applies a friction braking force, a friction braking force sensor, and a controller that sets a deceleration torque based on a steering speed detected by the steering angle sensor and controls the rotating electric machine to apply the deceleration torque to a front wheel of the vehicle, thereby executing a vehicle attitude control. When the friction braking force is applied to the wheels by the brake actuator during the vehicle attitude control, if the friction braking force is large, the controller corrects the deceleration torque to a larger value than when the friction braking force is small.
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公开(公告)号：US10793136B2
公开(公告)日：2020-10-06
申请号：US16084982
申请日：2017-03-30
Applicant: MAZDA MOTOR CORPORATION
Inventor： Toru Yoshioka , Daisuke Umetsu , Osamu Sunahara , Yasunori Takahara , Masaki Chiba
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 having steerable front road wheels, the vehicle behavior control device includes a PCM which acquires a steering speed of the vehicle, and generates a deceleration jerk which is a rearward jerk in a longitudinal direction of the vehicle when the steering speed becomes equal to or greater than a given threshold TS1 which is greater than zero.
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公开(公告)号：US10525962B2
公开(公告)日：2020-01-07
申请号：US16084761
申请日：2016-07-13
Applicant: MAZDA MOTOR CORPORATION
Inventor： Keiichi Hiwatashi , Daisuke Umetsu , Osamu Sunahara , Yasunori Takahara , Chikako Ohisa , Daisaku Ogawa
Abstract: A vehicle control device comprises: a downshift control part (51) configured, upon issuance of a downshift request for downshifting an automatic transmission (200), to execute a downshift control of downshifting the automatic transmission (200) and driving an engine torque regulating mechanism to increase an output torque of an engine (10); a vehicle attitude control part (53) configured, upon satisfaction of a condition that the vehicle is traveling and a steering angle-related value pertaining to a steering angle of a steering device increases, to execute a vehicle attitude control of reducing the output torque of the engine (10) to generate deceleration of the vehicle so as to control vehicle attitude; and a downshift suppression part (55) configured, when the vehicle attitude control is executed, to suppress the execution of the downshift control.
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公开(公告)号：US10408146B2
公开(公告)日：2019-09-10
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
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.
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Patent Agency Ranking
公开(公告)号：US10407071B2
公开(公告)日：2019-09-10
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
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.
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公开(公告)号：US10253711B2
公开(公告)日：2019-04-09
申请号：US15382953
申请日：2016-12-19
Applicant: MAZDA MOTOR CORPORATION
Inventor： Osamu Sunahara , Daisuke Umetsu , Chikako Ohisa , Yasunori Takahara
IPC: B62D15/02 , F02B75/18 , F02D11/10 , F02D17/02 , F02D29/02 , F02D41/00 , F02D41/10 , F02D41/12 , F02D41/26
Abstract: The vehicle behavior control device comprises an engine control part operable, when an steering speed is greater than a predetermined threshold, and both of a steering wheel angle of a vehicle and the steering speed are increasing, to reduce an output torque of a multi-cylinder internal combustion engine along with an increase in the steering speed, and when the steering speed is equal to or less than the threshold, to stop the reduction of the output torque, and a threshold setting part operable, when the operation mode of the engine is the all-cylinder operation, to set the threshold to a first threshold TS1, and, when the operation mode of the engine is the reduced-cylinder operation, to set the threshold to a second threshold TS2 which is less than the first threshold TS1.
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公开(公告)号：US10138824B2
公开(公告)日：2018-11-27
申请号：US15429354
申请日：2017-02-10
Applicant: MAZDA MOTOR CORPORATION
Inventor： Chikako Ohisa , Osamu Sunahara , Daisuke Umetsu , Taizo Ohmae , Yugou Sunagare , Yasunori Takahara , Daisaku Ogawa , Takahiro Kawamura , Takeatsu Ito
IPC: F02D41/00 , F02D9/08 , F02D37/02 , F02D41/26 , F02M35/10 , F02P5/145 , F02D41/02 , F02D11/10 , F02D23/00 , F02P5/15 , F02B37/12
Abstract: The turbocharged engine control device comprises a basic target torque-deciding part for deciding a basic target torque based on a driving state of a vehicle including an accelerator pedal operation state; a torque reduction amount-deciding part for deciding a torque reduction amount based on a driving state of the vehicle other than the accelerator pedal operation state; a final target torque-deciding part for deciding a final target torque based on the decided basic target torque and the decided torque reduction amount; and an engine output control part for controlling an intake air amount so as to realize a target air amount required for an engine to output the decided final target torque, wherein the engine output control part is operable, when an operating state of the engine falls within a supercharging region, to restrict a reduction in the intake air amount corresponding to a change in the torque reduction amount.
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公开(公告)号：US20180266346A1
公开(公告)日：2018-09-20
申请号：US15901697
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 , B60W10/06 , B60W10/10 , B60W30/18 , B60W30/045
Abstract: A vehicle control device is provided, which includes an engine, an engine control mechanism configured to control torque generated by the engine, and a processor configured to execute a vehicle attitude controlling module to perform a vehicle attitude control in which the engine control mechanism is controlled 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 preventing module to prevent a combustion frequency of the engine per unit time from falling below a given value while the vehicle attitude controlling module executes the vehicle attitude control.
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公开(公告)号：US09889846B2
公开(公告)日：2018-02-13
申请号：US15341710
申请日：2016-11-02
Applicant: MAZDA MOTOR CORPORATION
Inventor： Osamu Sunahara , Daisuke Umetsu
IPC: B62D12/00 , B60W30/045 , B62D6/00
CPC classification number: B60W30/045 , B60W30/18145 , B60W2510/207 , B60W2520/10 , B60W2520/14 , B60W2540/10 , B60W2710/1055 , B62D6/003
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 torque for the vehicle according to a steering speed of the vehicle, and acquire an understeer-causing state of the vehicle which is a factor causing understeer, wherein the PCM is further configured to perform control to, after reducing the torque, increase the torque at a change rate decided based on the understeer-causing state of the vehicle acquired by the PCM.
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