CONTROL APPARATUS OF FOUR-WHEEL DRIVE VEHICLE

摘要

A four-wheel drive vehicle is provided, including an engine with an operating mode that is switchable between all-cylinder and reduced-cylinder operating modes, a torque transmission assembly for transmitting an output torque of an engine to main drive wheels and auxiliary drive wheels, a torque ratio adjusting device included in the torque transmission assembly and configured to adjust a ratio of the output torque distributed to the auxiliary drive wheels, and controller that executes a noise suppression module for increasing the torque ratio provided to the auxiliary drive wheels by the torque ratio adjusting device so as to suppress noise generation at the torque transmission assembly, in the all-cylinder and reduced-cylinder operating modes. The noise suppression device changes the torque ratio provided to the auxiliary drive wheels according to engine operating ranges where the torque transmission assembly is in a noise generating state in the all-cylinder and reduced-cylinder operating modes, respectively.

主权项

1. A four-wheel drive vehicle, comprising:
an engine configured with an operating mode that is switchable between an all-cylinder operating mode and a reduced-cylinder operating mode; a torque transmission assembly configured to transmit an output torque of the engine to main drive wheels and auxiliary drive wheels; a torque ratio adjusting device included within the torque transmission assembly, configured to adjust a ratio of the output torque that is distributed to the auxiliary drive wheels; and a controller that executes a noise suppression module to cause the torque ratio adjusting device to increase the torque ratio applied to the auxiliary drive wheels, so as to suppress a generation of noise at the torque transmission assembly in the all-cylinder and reduced-cylinder operating modes, wherein the controller that executes the noise suppression module causes the torque ratio adjusting device to change the torque ratio applied to the auxiliary drive wheels according to engine operating ranges in which the torque transmission assembly is in a noise generating state in the all-cylinder and reduced-cylinder operating modes.