公开(公告)号：US11572069B2

公开(公告)日：2023-02-07

申请号：US17267744

申请日：2019-08-15

Applicant: Caterpillar Inc.

Inventor： Robert Nicholas Harper ,  Abhishek Awana ,  Christopher L. Wynkoop ,  Mariappan Paramasivan

IPC: F16H61/16 ,  B60W30/18 ,  B60W10/06 ,  B60W10/11 ,  F16H59/44 ,  F16H61/02 ,  E02F9/20

Abstract: The present disclosure relates to a method of controlling gear selection in a transmission of a vehicle in response to a directional shift requested by an operator and to a control system for controlling gear selection to manage directional shifts in vehicles, from a first direct to a second direction (e.g. forward to reverse). The method compares the current transmission output speed with a predetermined direction shift threshold transmission output speed. If the current transmission output speed is less than or equal to the predetermined direction shift threshold transmission output speed, the transmission is caused to execute a direction shift from the initial first direction gear to the same second direction gear, or a next highest second direction gear if there is no second direction gear which corresponds to the initial first direction gear. If the current transmission output speed is greater than the predetermined direction shift threshold transmission output speed, the direction shift is inhibited until the current transmission output speed slows to less than or equal to the predetermined direction shift threshold transmission output speed.