Heat engine, method of control of the rotational speed in a heat engine, and method of design of a cam profile for a heat engine
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United States of America Patent
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Sep 20, 2016
Grant Date -
Nov 27, 2014
app pub date -
Oct 3, 2012
filing date -
Oct 5, 2011
priority date (Note) -
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Abstract
A heat engine comprises two coaxial discoidal sectors and a mechanism of control of the rotational speed of the sectors that makes their respective rotational speeds to vary cyclically between a maximum and a minimum speed. The mechanism includes a linked structure provided with four links arranged in a deformable parallelogram and connected to each other by corresponding rotary joints located at their ends, each link including a roller located adjacent one end of the link. The mechanism further includes at least one cam profile for the rollers to follow, the cam profile being the locus of the path followed by the rollers when the sectors follow a motion such that the speed of each sector is kept at a maximum for at least 90% of the duration of a half-cycle, and is kept at a minimum for at least 90% of the duration of the other half-cycle.
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