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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
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.
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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
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.
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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.
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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
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.
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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.
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Patent Agency Ranking
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
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.
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公开(公告)号：US20200325841A1
公开(公告)日：2020-10-15
申请号：US16783986
申请日：2020-02-06
Applicant: Mazda Motor Corporation
Inventor： Taiga Kamiji , Takuo Hirano , Chikako Ohisa , Yoshiaki Aritome
Abstract: A method for controlling an internal combustion engine is provided, which includes defining a first area in which the engine operates in a stoichiometric combustion mode and a second area in which the engine operates in a lean combustion mode, on an operation map defined by the engine load and speed, and causing a controller to determine that an operation point on the operation map shifts from the first area to the second area based on signals from an accelerator opening sensor and a crank angle sensor, predict a length of time that the operation point stays in the second area, switch a combustion mode to the lean combustion mode when the predicted time is longer than a given period of time, and maintain the stoichiometric combustion mode when the predicted time is shorter than the given period of time.
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公开(公告)号：US10767582B2
公开(公告)日：2020-09-08
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
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：US10414400B2
公开(公告)日：2019-09-17
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
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.
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公开(公告)号：US10351164B2
公开(公告)日：2019-07-16
申请号：US15899750
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
Abstract: A vehicle control device is provided, which includes a drive source configured to generate torque as driving force of a vehicle, a transmission torque control mechanism configured to control transmission torque to drive wheels according to the generated torque, and a processor configured to execute a vehicle attitude controlling module to perform a vehicle attitude control by controlling the transmission torque control mechanism to reduce the transmission torque so as to decelerate the vehicle when a starting condition that the vehicle is traveling and a steering angle related value increases is satisfied, and then, when a given terminating condition is satisfied, controlling the mechanism to resume the transmission torque back to the torque before being reduced. The transmission torque is controlled so as to cause a yaw rate that occurs in the vehicle while the vehicle attitude control is performed, to be lower than an upper limit yaw rate.
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