Protecting shift elements in motor vehicle automatic gearbox involves applying torque to overloaded element in opposition to normal operation as result of protection function for shifts involving overloaded shift element

摘要

The method involves turning off one shift element and turning on another when shifting from one gear to another, whereby different load characteristics are determined for individual shift elements and are compared with threshold values to activate a protection function. For shifts involving an overloaded shift element a torque is applied to the overloaded element in opposition to normal operation as result of the protection function.