VARIABLE CAM PHASER FOR AUTOMOBILE ENGINE
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United States of America Patent
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Issued Date -
May 23, 2013
app pub date -
May 18, 2010
filing date -
May 18, 2010
priority date (Note) -
Abandoned
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Abstract
The invention provides a variable cam phaser for an automobile engine, equipped with a self-locking mechanism which is simpler in structure, cost effective, and easy to manufacture. The self-locking mechanism includes: a eccentric circular members (12) integral with the camshaft (6) and a support groove (15) for supporting the eccentric circular members from the both sides thereof at positions offset from the camshaft axis towards the eccentric cam center; a lock plate integrally held with the control rotor by means of a coupling mechanism; and a cylindrical portion belonging to the drive rotor in which the lock plate is inscribed. The self-locking mechanism prevents an unexpected change in the phase angle caused by an external disturbing toque transmitted to the camshaft via the crankshaft of the engine.
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