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Title: Method and apparatus for executing a shift in a hybrid transmission

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.
Authors:
; ;
Publication Date:
OSTI Identifier:
1093241
Report Number(s):
8,523,735
13/402,946
DOE Contract Number:
FC26-08NT04386
Resource Type:
Patent
Research Org:
GM Global Technology Operations LLC (Detroit, MI)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
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