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Patent Searching and Data


Title:
DIGITAL HYDRAULIC OPPOSED FREE PISTON ENGINES AND METHODS
Document Type and Number:
WIPO Patent Application WO/2013/019446
Kind Code:
A3
Abstract:
Digital hydraulic opposed free piston internal combustion engines having a pair of free pistons in a pair of cylinders defining a combustion chamber above each free piston. The pair of free pistons is arranged to move within the pair of cylinders with parallel axes of free piston motion, and preferably co-linear axes of free piston motion. At least one hydraulic plunger is under each free piston with each hydraulic plunger in a respective hydraulic cylinder. The hydraulic cylinders are coupled to electronically controlled hydraulic cylinder valving. A controller controls the electronically controlled hydraulic cylinder valving to control the pair of free pistons to have substantially equal and opposite motions.

Inventors:
STURMAN, Oded, Eddie (One Innovation Way, Woodland Park, CO, 80863, US)
Application Number:
US2012/047805
Publication Date:
July 11, 2013
Filing Date:
July 23, 2012
Export Citation:
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Assignee:
STURMAN DIGITAL SYSTEMS, LLC (One Innovation Way, Woodland Park, CO, 80863, US)
STURMAN, Oded, Eddie (One Innovation Way, Woodland Park, CO, 80863, US)
International Classes:
F02B71/04; F01B11/00; F04B35/00; F16F15/00
Foreign References:
US3170406A1965-02-23
US5647734A1997-07-15
US20110083643A12011-04-14
US20090250035A12009-10-08
US3065703A1962-11-27
Attorney, Agent or Firm:
VINCENT, Lester, J. et al. (Blakely, Sokoloff Taylor & Zafman LLP,1279 Oakmead Parkwa, Sunnyvale CA, 94085-4040, US)
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