Invention Grant
US08523735B1 Method and apparatus for executing a shift in a hybrid transmission 有权
用于执行混合传输中的移位的方法和装置

Method and apparatus for executing a shift in a hybrid transmission
Abstract:
A method for executing a transmission shift in a hybrid transmission including first and second electric machines includes executing a shift-through-neutral sequence from an initial transmission state to a target transmission state including executing an intermediate shift to neutral. Upon detecting a change in an output torque request while executing the shift-through-neutral sequence, possible recovery shift paths are identified. Available ones of the possible recovery shift paths are identified and a shift cost for each said available recovery shift path is evaluated. The available recovery shift path having a minimum shift cost is selected as a preferred recovery shift path and is executed to achieve a non-neutral transmission state.
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