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Title: Shape memory alloy heat engines and energy harvesting systems

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