Patent ID: 6411880
Filing Date: 2002-06-25
Classification: B60K,F16H

Abstract:
A control system for a transmission of the type used in a work vehicle including an engine and driven wheels, the transmission is coupled between the engine and the driven wheels to transmit power therebetween, the transmission including a plurality of gears and associated clutches, the clutches engageable in predetermined combinations by the control system to define transmission gear ratios within the transmission, the control system comprising:an direction-selection, operator interface for generating a direction signal representative of the desired direction of the work vehicle; a memory circuit for storing a default start-up gear ratio value; a first control circuit coupled to the operator interface and the memory circuit, the control circuit configured to receive the direction signal and selectively engage the clutches in a combination corresponding to the gear ratio value when power is applied to the control circuit upon vehicle start-up; a databus coupled to the first control circuit and including a communication interface; a second control circuit coupled to the databus, the second control circuit being configured to control a predetermined function of the vehicle; and a system interface separate from the vehicle and adapted to communicate with the communication interface to communicate with at least the memory circuit such that the default start-up gear ratio value can be transmitted from the system interface to the memory circuit for storage therein.