Variable cylinder capacity engine
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United States of America Patent
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Mar 21, 2006
Grant Date -
Sep 2, 2004
app pub date -
Jul 17, 2002
filing date -
Jul 18, 2001
priority date (Note) -
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Abstract
A mechanical transmission device for a variable cylinder capacity engine includes at least a cylinder (10) wherein moves a piston (2), which is integral in its lower portion with a transmission member (3) co-operating through a small-sized rack (37) with a roller bearing guide device (4) and through another large-sized rack (35) with a sprocket wheel (5) linked to a connecting rod (6), a control member (7) having a large-sized rack (73) co-operating with the sprocket wheel (5), elements for fixing (24, 31) the piston (2) on the transmission member (3) which provide a preload for clamping it and ensure its centring, linking elements (11, 12; 71, 72) for rigidifying the transmission (3) and control (7) members and for increasing the flexural strength of the teeth of the large-sized racks (35, 73) and elements for lightening (56) the sprocket wheel (5) which maintain its rigidity and load capacity.
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