Internal combustion engine valve mechanism

Details Internal combustion engine valve mechanism Internal combustion engine valve mechanism

2007-10-18

2011-11-22

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090390, C123S090440, C123S090450, C074S559000, C074S569000

Reexamination Certificate

active

08061314

ABSTRACT:
An internal combustion engine valve mechanism including a rocker arm, which includes a bearing section and a rocker roller, and an HLA. The HLA has a pivot, which is to be inserted into the bearing section, and supports one end of the rocker arm. The pivot has a spherically curved surface, whereas the bearing section has a shell-shaped dent. A swing arm rotates in synchronism with camshaft rotation and gives roller pressure force to the rocker roller. The direction in which the swing arm presses the rocker roller shifts toward the HLA when the lift of a valve disc increases. An osculating circle is inclined by inclining the axis of the bearing section at an angle of α° relative to the axis of the HLA.

REFERENCES:
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patent: 2005/0178350 (2005-08-01), Nakamura et al.
patent: 2006/0219196 (2006-10-01), Asada et al.
patent: 3 239712 (1991-10-01), None
patent: 2003 239712 (2003-08-01), None
patent: 03 095805 (2003-11-01), None
patent: 2005 059321 (2005-06-01), None

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