Apparatus and method for automatically controlling a transmission of a wheel loader

摘要

An aspect of the present disclosure has been made in an effort to provide an apparatus and a method of automatically controlling a transmission, capable of increasing work efficiency by removing a time gap between a starting time point when an operation such as excavation of a wheel loader starts and a transmission time point when the kickdown is performed. In addition, an aspect of the present disclosure has been made in an effort to provide an apparatus and a method of automatically controlling a transmission, capable of performing an automatic kickdown transmission at the same time of the starting time point of operation, preferably before the operation is performed.

主权项

1. A method of automatically controlling a transmission of a wheel loader which includes an engine, a transmission connected to the engine, and a transmission control unit for controlling the transmission, the method comprising:
receiving information including a transmission load, and a travel speed from a plurality of sensors; receiving information about a bucket position; checking whether a combination of the information received from the sensors and the bucket position information satisfies a predetermined condition; and performing an automatic kickdown from shift stage 2 to shift stage 1 by driving a clutching means in the transmission, when the predetermined condition is satisfied, wherein in the checking, the predetermined condition is satisfied when the transmission load and the travel speed are lower than a predetermined reference value, and the bucket is positioned at a position that is below a predetermined position.