Hoop spring in a pressure reactive piston

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United States of America Patent

PATENT NO 9957886
SERIAL NO

15648879

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Abstract

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Systems and methods are provided for varying a compression ratio in an engine having a pressure reactive piston. The pressure reactive piston may include a piston crown, and a spring positioned within the piston crown, wherein the spring includes a first ring, a second ring comprising a plurality of apertures, a rolling element positioned within each of the plurality of apertures, and a third ring. The first ring, the second ring, and the third ring of the spring may be arranged concentrically and the second ring may be positioned between the first ring and the third ring.

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Patent Owner(s)

  • FORD GLOBAL TECHNOLOGIES, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brevick, John Edward Livonia, US 44 205

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