Electrical control, for a gear change system, has a fail-safe action through an access control and valve setting data store to keep the valve safe on a control signal

摘要

The electrical system (10) is for the control of the first valve (26) of a gear change unit (22), with a controller (12) to generate the valve setting signal (28) and the valve control signal (30). The access control (16) has a data store (18) for the valve setting data, to bring the valve into a safe condition by the control signal.