公开(公告)号：US20200238823A1

公开(公告)日：2020-07-30

申请号：US16752449

申请日：2020-01-24

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yasumasa IMAMURA ,  Naoki NOBUTANI ,  Daisuke UMETSU

IPC: B60K17/35 ,  B60W10/02

Abstract: A vehicle system comprises an engine driving a vehicle, a front wheel and a rear wheel, a suspension device with an attachment portion to a vehicle body which is located at a higher level than a center axis of the rear wheel, an electromagnetic coupling to distribute a torque of the engine to the front wheel and the rear wheel, a steering wheel to be operated by a driver, a steering angle sensor to detect a steering angle corresponding to operation of the steering wheel, and a controller to control the engine and the electromagnetic coupling. The controller is configured to control the electromagnetic coupling such that the torque distributed to the rear wheel is decreased in accordance with returning operation of the steering wheel which is detected by the steering angle sensor.

公开(公告)号：US20200238995A1

公开(公告)日：2020-07-30

申请号：US16752369

申请日：2020-01-24

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yasumasa IMAMURA ,  Naoki NOBUTANI ,  Daisuke UMETSU

IPC: B60W30/188 ,  B62D1/04 ,  B62D15/02 ,  B60K17/04 ,  B60K17/24 ,  F02D41/02 ,  B60W10/04 ,  B60W10/119

Abstract: A vehicle system comprises an engine driving a vehicle, a front wheel and a rear wheel, a suspension device with an attachment portion to a vehicle body which is located at a higher level than a center axis of the rear wheel, an electromagnetic coupling to distribute a torque of the engine to the front wheel and the rear wheel, a steering wheel to be operated by a driver, a steering angle sensor to detect a steering angle corresponding to operation of the steering wheel, and a controller to control the engine and the electromagnetic coupling. The controller is configured to control the electromagnetic coupling such that the torque distributed to the rear wheel is increased in accordance with turning operation of the steering wheel which is detected by the steering angle sensor.

公开(公告)号：US20190263392A1

公开(公告)日：2019-08-29

申请号：US16346570

申请日：2017-11-02

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yasumasa IMAMURA ,  Yasushi YAGI ,  Tetsushi MARUTANI ,  Naoki NOBUTANI ,  Daisuke KOFU ,  Akihiro TATARA

IPC: B60W30/02 ,  B60K17/348 ,  B60W10/06 ,  B60W10/119 ,  B60W10/14 ,  B60W30/188 ,  B60W40/064 ,  B60W40/068

Abstract: A driving force control device 1 for a vehicle V comprises: a D-μ map M1 defining a linear correlation between a driving stiffness D and a maximum road surface μ; a slip ratio calculation circuit 21 for calculating a slip ratio S of one of a pair of front road wheels 10L, 10R; a DS calculation circuit 22 for calculating the driving stiffness D corresponding to a value the slip ratio S calculated by the slip ratio calculation circuit 21; a maximum road surface μ calculation circuit 23 for assigning a value of the driving stiffness D calculated by the DS calculation circuit 22 to the D-μ map M1 to calculate the maximum road surface μ; and a driving force distribution circuit 24 for controlling a driving force, using a value of the maximum road surface μ calculated by the maximum road surface μ calculation circuit 23.