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Title: Shape memory alloy heat engines and energy harvesting systems

Abstract

A heat engine includes a first rotatable pulley and a second rotatable pulled spaced from the first rotatable pulley. A shape memory alloy (SMA) element is disposed about respective portions of the pulleys at an SMA pulley ratio. The SMA element includes first spring coil and a first fiber core within the first spring coil. A timing cable is disposed about disposed about respective portions of the pulleys at a timing pulley ratio, which is different than the SMA pulley ratio. The SMA element converts a thermal energy gradient between the hot region and the cold region into mechanical energy.

Inventors:
; ; ; ; ; ;
Issue Date:
Research Org.:
GM Global Technology Operations LLC, Detroit, MI, USA
Sponsoring Org.:
USDOE
OSTI Identifier:
1111147
Patent Number(s):
8,607,562
Application Number:
13/340,955
Assignee:
GM Global Technology Operations LLC (Detroit, MI); Dynalloy, Inc. (Tustin, CA)
DOE Contract Number:  
AR0000040
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Browne, Alan L, Johnson, Nancy L, Keefe, Andrew C, Alexander, Paul W, Sarosi, Peter Maxwell, Herrera, Guillermo A, and Yates, James Ryan. Shape memory alloy heat engines and energy harvesting systems. United States: N. p., 2013. Web.
Browne, Alan L, Johnson, Nancy L, Keefe, Andrew C, Alexander, Paul W, Sarosi, Peter Maxwell, Herrera, Guillermo A, & Yates, James Ryan. Shape memory alloy heat engines and energy harvesting systems. United States.
Browne, Alan L, Johnson, Nancy L, Keefe, Andrew C, Alexander, Paul W, Sarosi, Peter Maxwell, Herrera, Guillermo A, and Yates, James Ryan. Tue . "Shape memory alloy heat engines and energy harvesting systems". United States. https://www.osti.gov/servlets/purl/1111147.
@article{osti_1111147,
title = {Shape memory alloy heat engines and energy harvesting systems},
author = {Browne, Alan L and Johnson, Nancy L and Keefe, Andrew C and Alexander, Paul W and Sarosi, Peter Maxwell and Herrera, Guillermo A and Yates, James Ryan},
abstractNote = {A heat engine includes a first rotatable pulley and a second rotatable pulled spaced from the first rotatable pulley. A shape memory alloy (SMA) element is disposed about respective portions of the pulleys at an SMA pulley ratio. The SMA element includes first spring coil and a first fiber core within the first spring coil. A timing cable is disposed about disposed about respective portions of the pulleys at a timing pulley ratio, which is different than the SMA pulley ratio. The SMA element converts a thermal energy gradient between the hot region and the cold region into mechanical energy.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {12}
}

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