Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2005-01-19
2008-08-19
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150, C123S090170, C123S090310
Reexamination Certificate
active
07412950
ABSTRACT:
A variable valve characteristic mechanism has a valve operation cam pivotally supported on a camshaft and a driving mechanism rocking an interlocking mechanism around the camshaft, the interlocking mechanism rocking the valve operation cam by a driving cam integrated into the camshaft. The engine valve starts to open and close in a damping portion of the valve operation cam, and the driving mechanism rocks the valve operation cam via the interlocking mechanism, thereby controlling an opening timing and a closing timing of the engine valve. A cam swelled portion of the driving cam has a constant velocity portion in which a lift velocity is constant, and the constant velocity portion is provided over an angular width where the opening timing in a most advanced angle position of the opening timing of the engine valve and the opening timing in a most retarded angle position of the opening timing are included.
REFERENCES:
patent: 4221199 (1980-09-01), Buuck et al.
patent: 6019076 (2000-02-01), Pierik et al.
patent: 7281504 (2007-10-01), Fujita et al.
patent: 7290512 (2007-11-01), Murata
patent: 2006/0207533 (2006-09-01), Fujita et al.
patent: 2004-11523 (2004-01-01), None
patent: 2004-353649 (2004-12-01), None
patent: 2005-69014 (2005-03-01), None
Translation of the International Preliminary Report on Patentability of International Application No. PCT/JP 2005/000942, with Form PCT/IB/373 and Form PCT/ISA/237.
Inomoto Yutaka
Kuroki Masahiro
Denion Thomas
Honda Motor Co. Ltd.
Riddle Kyle M
Westerman, Hattori, Daniels & Adrian , LLP.
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