-
公开(公告)号：US11433879B2
公开(公告)日：2022-09-06
申请号：US16758059
申请日：2018-11-29
Applicant: MAZDA MOTOR CORPORATION
Inventor： Daisaku Ogawa , Osamu Sunahara , Yasunori Takahara , Chikako Ohisa , Yuichiro Akiya , Atsushi Yamasaki , Keiichi Hiwatashi , Daisuke Umetsu
IPC: B60W30/045 , B60W30/18 , B62D1/04 , F02D11/02
Abstract: A vehicle control system comprises: an engine (4); an accelerator position sensor (10) configured to detect the position of an accelerator pedal; a steering device; a PCM (14) configured to generate a deceleration in the vehicle to control the attitude of the vehicle, when a steering angle-related value as a parameter related to a steering angle of the steering device increases; and a brake unit (16) configured to generate a deceleration in the vehicle, independently of reduction of an output torque of the engine, wherein the PCM is configured to generates the deceleration by means of the reduction of the output torque of the engine when a depression of the accelerator pedal is detected by the accelerator position sensor, and to generate the deceleration by the brake unit (16) when the depression of the accelerator pedal is not detected by the accelerator position sensor.
-
公开(公告)号：US10562537B2
公开(公告)日：2020-02-18
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 , B60W10/02 , B60W10/04 , B60W40/10 , F02P5/15
Abstract: The vehicle control device is designed to control a vehicle equipped with an engine, and an automatic transmission comprising a torque converter with a lockup clutch. The vehicle control device comprises a controller configured to perform control of changing an engagement degree of the lockup clutch 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 torque of the engine to generate a deceleration of the vehicle to thereby execute a torque reduction control for controlling an attitude of the vehicle. The controller is configured to reduce the output torque of the engine, in accordance with the engagement degree of the lockup clutch controlled by a lockup control.
-
公开(公告)号：US10465614B2
公开(公告)日：2019-11-05
申请号：US15763681
申请日：2016-12-22
Applicant: MAZDA MOTOR CORPORATION
Inventor： Keiichi Hiwatashi , Yasunori Takahara , Daisaku Ogawa , Daisuke Umetsu , Osamu Sunahara , Chikako Ohisa , Koichi Kimoto
IPC: B60W30/045 , F02D17/02 , B60W40/114 , B62D6/00 , B60W30/18 , F02D31/00
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 output torque (engine torque) of the engine (10). The vehicle 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 generate vehicle deceleration to control vehicle attitude. The PCM (50) is further configured to gradually ease the condition, as the number of times of combustion per unit time in the engine (10) becomes smaller.
-
公开(公告)号：US10246084B2
公开(公告)日：2019-04-02
申请号：US15710332
申请日：2017-09-20
Applicant: MAZDA MOTOR CORPORATION
Inventor： Tomoji Izumi , Yasunori Takahara , Daisuke Umetsu , Osamu Sunahara , Masaki Chiba
Abstract: A 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 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 using the first steering angle sensor (14) when a yaw rate or a steering speed is equal to or greater than a given value, and performs the driving force reduction control using the second steering angle sensor (19) when the yaw rate or the steering speed is less than the given value.
-
公开(公告)号：US20170145931A1
公开(公告)日：2017-05-25
申请号：US15338081
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
Abstract: An engine control device is provided, that includes an air amount controller, an ignition timing controller, a basic target torque determinator which determines a basic target torque, a change rate acquirer for acquiring a change rate of a steering operation, a target additional deceleration setter for increasing a target additional deceleration while an increase rate thereof becomes less as the change rate increases, a torque reduction amount determinator for determining an engine torque reduction amount, a final target torque determinator for determining a final target torque, and an actual air amount estimator for estimating an actual air amount introduced into a combustion chamber. The air amount controller determines a target air amount and controls the intake air amount to achieve the target air amount. The ignition timing controller retards the ignition timing more as the actual air amount becomes more excessive with respect to the target amount.
-
Patent Agency Ranking
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.
-
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.
-
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.
-
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.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
47
records
(took 0.019 seconds)
