Torque control for automatic transmission of motor vehicle - has additional range for selector control with infinitely variable gear ratio

摘要

The gear lever (11) for the automatic transmission has the normal settings, park, drive, neutral, reverse etc. as well as an additional range (14) in which the gear ratio is fixed on a sliding scale. This enables the driver to have better control on downhill travel and when travelling along strongly curved roads where constant gear changes become uncomfortable. The same control operates over all the ranges. The infinitely variable range is hydraulic or electric. The former operates between control valves while the latter operates with a potentiometer. The control can involve infinitely variable transmission elements and/or transmission brakes. ADVANTAGE - Improved control for automatic transmission vehicle; simple to operate.