SYSTEM AND METHOD FOR CONTROLLING A TRANSMISSION

摘要

A system for selecting shift schedules of a transmission of a vehicle configured to change gears according to two or more shift schedules includes a controller. The controller is configured to estimate mass of the vehicle based on a plurality of accelerations of the vehicle from a standstill, and estimate a road load of the vehicle based on the estimated mass. The controller is also configured to estimate a grade of terrain over which the vehicle is travelling based on the estimated mass of the vehicle. The controller is further configured to select between at least a first shift schedule and a second shift schedule based on at least one of the estimated mass of the vehicle, characteristics of the terrain over which the vehicle is travelling, the estimated grade of the terrain over which the vehicle is travelling, and functions capable of being performed by the vehicle.

主权项

1. A system for selecting shift schedules of a transmission of a vehicle configured to change gears according to two or more shift schedules, the system comprising:
a controller configured to:
estimate mass of the vehicle based on a plurality of accelerations of the vehicle from a standstill;estimate a road load of the vehicle based on the estimated mass of the vehicle;estimate a grade of terrain over which the vehicle is travelling based on the estimated mass of the vehicle; andselect between at least a first shift schedule and a second shift schedule based on at least one of the estimated mass of the vehicle, characteristics of the terrain over which the vehicle is travelling, the estimated grade of the terrain over which the vehicle is travelling, and functions capable of being performed by the vehicle.