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.
- Inventors:
- Issue Date:
- Research Org.:
- GM Global Technology Operations LLC (Detroit, MI)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1093241
- Patent Number(s):
- 8523735
- Application Number:
- 13/402,946
- Assignee:
- GM Global Technology Operations LLC (Detroit, MI)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60W - CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16H - GEARING
- DOE Contract Number:
- FC26-08NT04386
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Gupta, Pinaki, Kaminsky, Lawrence A, and Demirovic, Besim. Method and apparatus for executing a shift in a hybrid transmission. United States: N. p., 2013.
Web.
Gupta, Pinaki, Kaminsky, Lawrence A, & Demirovic, Besim. Method and apparatus for executing a shift in a hybrid transmission. United States.
Gupta, Pinaki, Kaminsky, Lawrence A, and Demirovic, Besim. Tue .
"Method and apparatus for executing a shift in a hybrid transmission". United States. https://www.osti.gov/servlets/purl/1093241.
@article{osti_1093241,
title = {Method and apparatus for executing a shift in a hybrid transmission},
author = {Gupta, Pinaki and Kaminsky, Lawrence A and Demirovic, Besim},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 03 00:00:00 EDT 2013},
month = {Tue Sep 03 00:00:00 EDT 2013}
}
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Method and apparatus to determine a preferred operating point for an engine of a powertrain system using an iterative search
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