Electronic transmission control unit has coupled gear ratio, transmission function processors that monitor each other for correct function; if one is faulty the other positively deactivates it

摘要

The device has a driver-operated gear selection lever, a gear selection actuator, a transmission controller and a signal line between the section lever and controller. The transmission controller has two control processors connected to the signal line, a gear ratio processor and a function processor for other transmission functions. The processors monitor each other for correct functionality; if one is faulty the other positively deactivates it. The device has a driver-operated gear selection lever (1), a gear selection actuator (7), a microprocessor-assisted transmission controller (3,4) and a signal line (2) between the section lever and controller carrying gear ratio information. The transmission controller has two control processors connected to the signal line, a gear ratio processor (3) for controlling the actuator and a function processor (4) for other transmission functions. The processors are coupled and monitor each other for correct functionality; if one is faulty the other positively deactivates it.