公开(公告)号：US20200070813A1

公开(公告)日：2020-03-05

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 ,  F02D41/12 ,  B60W30/18 ,  B60W30/188 ,  B60W10/06 ,  B60W10/10

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.

公开(公告)号：US20190077391A1

公开(公告)日：2019-03-14

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

IPC: B60W10/11 ,  B60W10/04 ,  B60W40/10 ,  B60W30/18 ,  B60W30/045

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：US20180345976A1

公开(公告)日：2018-12-06

申请号：US15515084

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

IPC: B60W30/18 ,  F02D41/12 ,  F02D41/00

CPC classification number: B60W30/18145 ,  B60K28/10 ,  B60W30/02 ,  B60W2510/0638 ,  B60W2540/18 ,  B60W2710/0672 ,  F02D13/06 ,  F02D29/02 ,  F02D41/0087 ,  F02D41/021 ,  F02D41/12 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2200/60 ,  F02D2250/26 ,  F02P5/15

Abstract: A control device for a vehicle includes: an engine (10); an engine torque adjustment mechanism for adjusting an output torque of the engine; and a PCM (50) configured, upon satisfaction of a vehicle attitude control executing 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 generate deceleration of the vehicle so as to control vehicle attitude. The PCM (50) is further configured to set a rate of change in the engine output torque being reduced, such that the rate of change becomes larger as the number of times of combustion per unit time in the engine (10) becomes smaller, and to control the engine torque adjustment mechanism to reduce the engine output torque according to the rate of change set by the torque reduction change rate-setting part.

公开(公告)号：US20170234210A1

公开(公告)日：2017-08-17

申请号：US15429319

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: F02B37/12 ,  F02B37/16

CPC classification number: F02B37/127 ,  F02B37/16 ,  F02D41/0007 ,  F02D2200/602 ,  Y02T10/144

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 the engine so as to cause the 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 where supercharging by a compressor, to restrict control of the engine corresponding to a change in the torque reduction amount.

公开(公告)号：US20210094563A1

公开(公告)日：2021-04-01

申请号：US16955413

申请日：2019-01-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Daisaku OGAWA ,  Daisuke UMETSU ,  Setsuya KISHIMURA

IPC: B60W60/00 ,  B60W10/18 ,  B60W10/20 ,  B60W10/04 ,  B60W40/114

Abstract: Provided is a vehicle control system capable of, when a swaying phenomenon occurs during towing, preventing the swaying phenomenon from becoming worse due to driving force reduction control based on an increase in steering angle-related value. This vehicle control system comprises a steering wheel (6), a driving force control mechanism to control a driving force of a vehicle (1), and a PCM (16) to control the driving force control mechanism, wherein the PCM (16) is operable, upon an increase in steering angle, to control an engine (4) to reduce an output torque of the engine (4), and, when a reversal of yaw rate of the vehicle (1) is repeated in a situation where the vehicle (1) is performing a towing operation, to restrict the output torque reduction based on the increase in the steering angle.

公开(公告)号：US20210079869A1

公开(公告)日：2021-03-18

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

IPC: F02D41/30 ,  F02D37/02

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.

公开(公告)号：US20210039624A1

公开(公告)日：2021-02-11

申请号：US16965901

申请日：2019-01-29

Applicant: MAZDA MOTOR CORPORATION

Inventor： Daisuke UMETSU ,  Osamu SUNAHARA ,  Daisaku OGAWA

IPC: B60W10/196 ,  B60W20/14

Abstract: In a control method for a vehicle that adds deceleration to a vehicle so as to control a vehicle posture when a turning operation of a steering system is performed, the deceleration is appropriately set on the basis of an operation of a single pedal. The control method for the vehicle includes: a step of adding the deceleration that corresponds to an accelerator pedal depression amount to a vehicle 1 when the accelerator pedal depression amount detected by an accelerator operation amount sensor 10 is smaller than a specified value A1 that is larger than 0; a step of determining whether the turning operation of the steering system is performed on the basis of a steering angle detected by a steering angle sensor 8; a step of adding the deceleration to the vehicle 1 so as to control the vehicle posture when it is determined that the turning operation of the steering system is performed; and a step of setting the deceleration on the basis of the accelerator pedal depression amount detected by the accelerator operation amount sensor 10, the deceleration being added to the vehicle 1 when it is determined that the turning operation of the steering system is performed.

公开(公告)号：US20200369261A1

公开(公告)日：2020-11-26

申请号：US16969182

申请日：2019-02-14

Applicant: MAZDA MOTOR CORPORATION

Inventor： Daisuke UMETSU ,  Osamu SUNAHARA ,  Daisaku OGAWA

IPC: B60W30/045 ,  B60L15/20 ,  B60L7/10

Abstract: A control method for a vehicle has: a step of determining whether a turning operation of a steering system including a steering wheel 6 and the like is performed on the basis of a steering angle that is detected by a steering angle sensor 8; a step of causing a motor generator 4 to generate regenerative power and adding deceleration to a vehicle 1 so as to control a vehicle posture when it is determined that the turning operation of the steering system is performed; and a step of increasing the deceleration, which is added to the vehicle 1 in order to control the vehicle posture, to be higher when the deceleration generated on the vehicle 1 has a first value than when the deceleration generated on the vehicle 1 has a second value that is lower than the first value.

公开(公告)号：US20180086349A1

公开(公告)日：2018-03-29

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 ,  B60W40/10 ,  F02P5/15

CPC classification number: B60W40/105 ,  B60W10/02 ,  B60W10/04 ,  B60W40/10 ,  B60W2510/0275 ,  B60W2510/0657 ,  B60W2520/10 ,  B60W2520/14 ,  B60W2520/16 ,  B60W2520/18 ,  B60W2540/10 ,  B60W2540/18 ,  F02P5/15 ,  F02P5/1504

Abstract: The vehicle control device is designed to control a vehicle equipped with an engine (10), and an automatic transmission (200) comprising a torque converter (202) with a lockup clutch (202f). The vehicle control device comprises a controller (50) configured to perform control of changing an engagement degree of the lockup clutch (202f) 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 toque of the engine (10) to generate a deceleration of the vehicle to thereby execute a torque reduction control for controlling an attitude of the vehicle. The controller (50) is configured to reduce the output toque of the engine (10), in accordance with the engagement degree of the lockup clutch (202f) controlled by a lockup control.

公开(公告)号：US20170254281A1

公开(公告)日：2017-09-07

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

IPC: F02D41/02 ,  F02D9/02 ,  F16H63/50

CPC classification number: F02D41/023 ,  B60W2540/18 ,  F02D9/02 ,  F02D11/105 ,  F02D41/0002 ,  F02D2200/501 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2250/26 ,  F16H63/502 ,  Y02T10/42

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.