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.

公开(公告)号：US20160214616A1

公开(公告)日：2016-07-28

申请号：US15003328

申请日：2016-01-21

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tetsushi MARUTANI ,  Hiraku NISHIKAWA

IPC: B60W30/20 ,  B60W10/06 ,  B60W10/119 ,  B60K17/34

CPC classification number: B60W30/20 ,  B60K23/0808 ,  B60K2023/0833 ,  B60K2023/0858 ,  B60W10/06 ,  B60W10/119 ,  B60W2030/206 ,  B60W2710/06 ,  B60W2720/40 ,  B60Y2306/09

Abstract: A control device controls a four-wheel drive vehicle including an engine, a torque transmission mechanism which transmits an output torque of the engine to main drive wheels and to auxiliary drive wheels, and a torque distribution adjustment mechanism provided in the torque transmission mechanism and configured to adjust torque distribution with respect to the auxiliary drive wheels. The control device is provided with an abnormal noise reduction unit which controls the torque distribution adjustment mechanism to adjust torque distribution with respect to the auxiliary drive wheels in such a manner as to suppress abnormal noise generation when the engine is operated in an abnormal noise generation range in which the torque transmission mechanism is in an abnormal noise generation state. The abnormal noise reduction unit adjusts the torque distribution with respect to the auxiliary drive wheels in accordance with a magnitude of torque fluctuation of the engine.

Abstract translation: 控制装置控制包括发动机的四轮驱动车辆，将发动机的输出转矩传递到主驱动轮和辅助驱动轮的扭矩传递机构，以及设置在扭矩传递机构中的扭矩分配调节机构， 调整相对于辅助驱动轮的转矩分配。 控制装置设置有异常噪声降低单元，其控制扭矩分配调节机构，以相对于辅助驱动轮调节扭矩分配，以便抑制发动机在异常噪声产生范围内操作时的异常噪声产生 其中扭矩传递机构处于异常噪声产生状态。 异常噪声降低单元根据发动机的转矩波动的大小来调整相对于辅助驱动轮的转矩分配。