公开(公告)号：US20230311842A1

公开(公告)日：2023-10-05

申请号：US18190010

申请日：2023-03-24

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki

IPC: B60W10/11 ,  B60W10/188 ,  B60K6/48 ,  B60W30/18 ,  B60K6/547 ,  B60W40/114

CPC classification number: B60W10/11 ,  B60W10/188 ,  B60K6/48 ,  B60W30/18127 ,  B60K6/547 ,  B60W40/114 ,  B60W2540/18 ,  B60K2006/4825 ,  B60W2520/10 ,  B60W2510/207

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration during which the friction brake system is distributing a braking force to front and rear wheels, a regeneration control of imparting a regenerative braking torque to the rear wheels and a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft to the transmission. When the controller determines an oversteered state of the vehicle during the regeneration control, the controller increases an input torque of the input shaft so that the regenerative braking torque decreases while maintaining the regeneration operation of the motor and, at the same time, interrupts motive power transmission between the input shaft and an output shaft of the transmission.

公开(公告)号：US20230311883A1

公开(公告)日：2023-10-05

申请号：US18190543

申请日：2023-03-27

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki ,  Taiki Kado ,  Keita Ejiri ,  Kiminori Higo

IPC: B60W30/18 ,  B60W10/08 ,  B60W10/11 ,  B60W10/188

CPC classification number: B60W30/18127 ,  B60W10/08 ,  B60W10/11 ,  B60W10/188 ,  B60W30/18145 ,  B60W2520/14 ,  B60W2540/12

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes a regeneration control of imparting a regenerative braking torque to rear wheels by causing the motor to perform a regeneration operation and a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft. The controller starts the gear-shifting control, triggered by the rotation speed decreasing to a predetermined downshift point during a downshift of the shift stage, and during deceleration of the vehicle when a coefficient of friction of a road surface is lower than a predetermined threshold in the regeneration control, the controller sets the downshift point lower than when the coefficient of friction is equal to or higher than the threshold.

公开(公告)号：US11834028B2

公开(公告)日：2023-12-05

申请号：US18190010

申请日：2023-03-24

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki

IPC: B60W30/18 ,  B60W10/11 ,  B60K6/48 ,  B60K6/547 ,  B60W40/114 ,  B60W10/188

CPC classification number: B60W10/11 ,  B60K6/48 ,  B60K6/547 ,  B60W10/188 ,  B60W30/18127 ,  B60W40/114 ,  B60K2006/4825 ,  B60W2510/207 ,  B60W2520/10 ,  B60W2540/18

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration during which the friction brake system is distributing a braking force to front and rear wheels, a regeneration control of imparting a regenerative braking torque to the rear wheels and a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft to the transmission. When the controller determines an oversteered state of the vehicle during the regeneration control, the controller increases an input torque of the input shaft so that the regenerative braking torque decreases while maintaining the regeneration operation of the motor and, at the same time, interrupts motive power transmission between the input shaft and an output shaft of the transmission.

公开(公告)号：US20230347749A1

公开(公告)日：2023-11-02

申请号：US18189800

申请日：2023-03-24

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki

IPC: B60L15/20 ,  B60L7/26

CPC classification number: B60L7/26 ,  B60L15/2009 ,  B60L15/2036 ,  B60L2240/20 ,  B60L2240/24 ,  B60L2240/48

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes regeneration control and gear-shifting control during deceleration of the vehicle with a braking force to front and rear wheels. The controller increases an input torque of an input shaft according to a downshift so that an accompanying acceleration fluctuation equals a target acceleration fluctuation. When the controller determines an oversteered state during the regeneration control and during a downshift, the controller increases the input torque so that a regenerative braking torque decreases while maintaining a regeneration operation of the motor and, at the same time, the controller causes the automatic transmission to perform the downshift in a state where an amount of increase of the input torque in accordance with the downshift has been increased compared to during a non-determination of the oversteered state.

公开(公告)号：US20230311841A1

公开(公告)日：2023-10-05

申请号：US18189992

申请日：2023-03-24

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki

IPC: B60W10/11 ,  B60K6/48 ,  B60K6/547 ,  B60W10/188 ,  B60W30/18

CPC classification number: B60W10/11 ,  B60K6/48 ,  B60K6/547 ,  B60W10/188 ,  B60W30/18127 ,  B60K2006/4833 ,  B60W2520/26 ,  B60K2006/4825

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of an automobile, a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft and a regeneration control of performing regeneration by at least one of distributing a braking force by the friction brake system and imparting a regenerative braking torque to rear wheels by causing the motor to perform a regeneration operation. The controller executes a first coordinated gear-shifting control of reducing hydraulic pressure in the friction brake system and, at the same time, changing the shift stage while continuing the regeneration operation during brake regeneration and executes a second coordinated gear-shifting control of changing the shift stage after increasing an input torque during non-brake regeneration.

公开(公告)号：US11891065B2

公开(公告)日：2024-02-06

申请号：US18189903

申请日：2023-03-24

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki

IPC: B60W30/18 ,  B60W10/184 ,  B60W10/11 ,  F16H59/42 ,  F16H59/58 ,  F16H61/16 ,  B60L7/26 ,  B60T8/1755 ,  B60T8/32 ,  B62D11/00 ,  F16H48/20 ,  B60T8/48

CPC classification number: B60W30/18127 ,  B60L7/26 ,  B60T8/1755 ,  B60W10/11 ,  B60W10/184 ,  F16H59/42 ,  F16H59/58 ,  F16H61/16 ,  B60T8/17554 ,  B60T8/3255 ,  B60T8/4809 ,  B60T2270/604 ,  B60W2510/1015 ,  B60W2520/14 ,  B60W2540/18 ,  B60W2710/1005 ,  B60W2710/1022 ,  B60W2710/18 ,  B60W2720/106 ,  B62D11/001 ,  B62D11/003 ,  B62D11/005 ,  B62D11/006 ,  B62D11/008 ,  F16H2048/205 ,  F16H2061/163 ,  F16H2061/168

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of a vehicle during which the friction brake system is distributing a braking force to front and rear wheels, a regeneration control of imparting a regenerative braking torque to the rear wheels by causing the motor to perform a regeneration operation and a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft to the automatic transmission. When the controller determines an oversteered state of the vehicle during the regeneration control, the controller increases an input torque of the input shaft so that the regenerative braking torque decreases while maintaining the regeneration operation of the motor and, at the same time, limits the gear-shifting control.

公开(公告)号：US11827205B2

公开(公告)日：2023-11-28

申请号：US18189992

申请日：2023-03-24

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki

IPC: B60W10/11 ,  B60W30/18 ,  B60W30/02 ,  B60W30/045 ,  B60K6/46 ,  B60K6/547 ,  B60K6/48 ,  B60W10/188

CPC classification number: B60W10/11 ,  B60K6/46 ,  B60K6/547 ,  B60W10/188 ,  B60W30/18127 ,  B60K6/48 ,  B60K2006/4825 ,  B60K2006/4833 ,  B60W30/02 ,  B60W30/045 ,  B60W2510/207 ,  B60W2520/26 ,  B60W2710/20 ,  B60W2710/202 ,  B60W2710/207 ,  B60W2720/26

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of an automobile, a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft and a regeneration control of performing regeneration by at least one of distributing a braking force by the friction brake system and imparting a regenerative braking torque to rear wheels by causing the motor to perform a regeneration operation. The controller executes a first coordinated gear-shifting control of reducing hydraulic pressure in the friction brake system and, at the same time, changing the shift stage while continuing the regeneration operation during brake regeneration and executes a second coordinated gear-shifting control of changing the shift stage after increasing an input torque during non-brake regeneration.

公开(公告)号：US20230347896A1

公开(公告)日：2023-11-02

申请号：US18189903

申请日：2023-03-24

Applicant: Mazda Motor Corporation

Inventor： Makoto Yamada ,  Tooru Uematsu ,  Atsushi Yamasaki

IPC: F16H61/16 ,  F16H59/58 ,  F16H59/42 ,  B60T8/1755 ,  B60W10/184 ,  B60W10/11 ,  B60W30/18 ,  B60L7/26

CPC classification number: B60W30/18127 ,  B60L7/26 ,  B60T8/1755 ,  B60W10/11 ,  B60W10/184 ,  F16H59/42 ,  F16H59/58 ,  F16H61/16 ,  B60T2270/604 ,  B60W2510/1015 ,  B60W2520/14 ,  B60W2540/18 ,  B60W2710/1005 ,  B60W2710/1022 ,  B60W2710/18 ,  B60W2720/106 ,  F16H2061/163 ,  F16H2061/168

Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of a vehicle during which the friction brake system is distributing a braking force to front and rear wheels, a regeneration control of imparting a regenerative braking torque to the rear wheels by causing the motor to perform a regeneration operation and a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft to the automatic transmission. When the controller determines an oversteered state of the vehicle during the regeneration control, the controller increases an input torque of the input shaft so that the regenerative braking torque decreases while maintaining the regeneration operation of the motor and, at the same time, limits the gear-shifting control.