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1979 Spirit with Stirling engine The Stirling engine in the 1979 Spirit experimental vehicle. The AMC Spirit served as a test vehicle for alternative engine and fuel experiments. [67] The Stirling engine was considered theoretically to be the most efficient of the alternative heat engines under development during the late 1970s. [68]
1979 DOE NASA AMC Spirit DL with a Stirling engine. NASA's Stirling MOD 1 powered engineering vehicles were built in partnership with the United States Department of Energy (DOE) and NASA, under contract by AMC's AM General to develop and demonstrate practical alternatives for standard engines. [7]
A Stirling engine is a heat engine that is operated by the cyclic expansion and contraction of air or other gas (the working fluid) by exposing it to different temperatures, resulting in a net conversion of heat energy to mechanical work. [1] [2]
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For the study, a 1980 four-door Lerma sedan was fitted with a P-40 engine and used to inform the public about the Stirling engine. [91] AM General subsidiary of AMC was the major subcontractor for engine and vehicle integration for "The Automotive Stirling Engine Development Program" awarded to MIT by NASA with funding by DOE.
In mechanical engineering, the Beale number is a parameter that characterizes the performance of Stirling engines. [1] It is often used to estimate the power output of a Stirling engine design. For engines operating with a high temperature differential, typical values for the Beale number are in the range 0.11−0.15; where a larger number ...
Usual technologies for the production of heat and power in one common process are e.g. internal combustion engines, micro gas turbines, stirling engines or fuel cells. Local generation has the potential for a higher efficiency than traditional grid-level generators since it lacks the 8-10% energy losses from transporting electricity over long ...
It was originally developed around 1900 for the twin-cylinder Lanchester car engine where it allowed perfect balancing of the inertial forces on both pistons. A current example of its use is on beta type-Stirling engines; the drive's complexity and tight tolerances, causing a high cost of manufacture, is a hurdle for the widespread usage of this drive.