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Patent Agency Ranking
公开(公告)号：US11242817B2
公开(公告)日：2022-02-08
申请号：US16962482
申请日：2019-01-16
Applicant: MAZDA MOTOR CORPORATION
Inventor： Shinji Takayama , Takeatsu Ito , Masahiro Nagoshi , Yuichiro Akiya , Yuto Matsushima , Kenko Ujihara , Daisaku Ogawa , Daisuke Umetsu
Abstract: An engine control method includes a step of setting combustion mode in which a first combustion mode in which a mixed gas is combusted by propagating flame or a second combustion mode in which the mixed gas is combusted by self-ignition is selected, a step of setting air-fuel ratio mode in which a lean first air-fuel ratio mode or a second air-fuel ratio mode equal to or richer than a theoretical air-fuel ratio is selected, a step of setting torque reduction in which a torque reduction amount by which a torque generated by an engine is reduced based on a steer angle of a steering wheel, and a suppressing step in which reducing the torque generated by the engine based on the torque reduction amount set in the step of setting torque reduction is suppressed.
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公开(公告)号：US11091150B2
公开(公告)日：2021-08-17
申请号：US16489452
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: B60W30/045 , B60W10/06 , B60W10/10 , B60W30/18 , B60W30/188 , F02D41/12
Abstract: A vehicle control device includes an engine (10), an engine control mechanism that controls an engine torque, and a PCM (50) that performs 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. When a driver performs an accelerator operation for reducing an accelerator opening during execution of vehicle posture control, the PCM (50) suppresses reduction of a generated torque of the engine due to the accelerator operation.
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公开(公告)号：US11046324B2
公开(公告)日：2021-06-29
申请号：US16652777
申请日：2018-10-01
Applicant: Mazda Motor Corporation
Inventor： Kentaro Yanagisawa , Ryohei Yasutomi , Hidemasa Tomiyori , Hisanobu Okada , Tatsuya Matsukawa , Yukihiro Soeda , Tatsuo Sasaki , Daisaku Shiraishi , Tetsutaka Shibata , Keiichi Hiwatashi , Yuichiro Akiya
Abstract: A control device for a multi-stage automatic transmission-equipped vehicle includes a hydraulic power controller, a combustion controller configured to, if a predetermined combustion stop condition is satisfied when the vehicle is traveling, perform deceleration-period combustion stop control, and limit combustion restart triggered by a reduction in rotational speed of an internal combustion engine, during execution of the deceleration-period combustion stop control, and a motoring controller configured to control the rotational drive of the internal combustion engine by a motor during execution of the deceleration-period combustion stop control so that the rotational speed of the internal combustion engine is maintained at a predetermined rotational speed during a period of time from the time that the rotational speed of the internal combustion engine decreases to the predetermined rotational speed until downshifting to a predetermined gear ratio is completed.
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公开(公告)号：US10336364B2
公开(公告)日：2019-07-02
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
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.
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公开(公告)号：US20180265119A1
公开(公告)日：2018-09-20
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
CPC classification number: B62D5/0463 , B60L15/2072 , B60L2240/12 , B60L2240/14 , B60L2240/22 , B60L2240/423 , B60L2240/461 , B60L2240/463 , B60L2250/26 , B60L2260/26 , B60W10/06 , B60W2510/0661 , G05D1/08
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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