System and method for operating an automated transmission when a motor rotation indicator or a bus connection between control modules fails

摘要

The method involves verifying whether engine speed of an engine shaft is transferable from a control module to another control module over a bus connection. Engine speed of a transmission shaft is detected. A gear changing ramp function is determined for the latter module to execute a switching operation from a source gear to a target gear. A process for changing a gear of an automated transmission i.e. double clutch transmission, is initiated in reaction to a gear changing command that is given either by one of the modules or an operator of a motor vehicle, based on the detected speed. An independent claim is also included for a system for maintaining an operation of an automated transmission i.e. double clutch transmission, for a motor vehicle during a failure of a bus connection between two control modules.