Engine having variable valve mechanism

Details Engine having variable valve mechanism Engine having variable valve mechanism

2009-02-18

2011-10-11

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090390, C123S090440, C074S559000, C074S569000

Reexamination Certificate

active

08033256

ABSTRACT:
An engine having a variable valve mechanism arranged to switch a lift degree of a valve between a low speed state and a high speed state includes a cam carrier defined by a cam bearing portion, a rocker shaft support, and a hydraulic cylinder support. The cam bearing portion is provided on a line passing through the bore center of a cylinder in a plane perpendicular or substantially perpendicular to the camshaft. The low speed rocker arm swings in response to the low speed cam of the camshaft. The high speed rocker arm swings in response to the high speed cam of the camshaft. The low speed rocker arm includes a through hole. A connecting pin is slidably inserted into the through hole and urged toward the hydraulic cylinder support. A hydraulic cylinder is provided in the hydraulic cylinder support.

REFERENCES:
patent: 5515820 (1996-05-01), Sugimoto et al.
patent: 6481398 (2002-11-01), Uchiyama
patent: 0 258 061 (1988-03-01), None
patent: 0 703 357 (1996-03-01), None
patent: 1 247 945 (2002-10-01), None
patent: 1 728 976 (2006-12-01), None
patent: 2 230 818 (1990-10-01), None
patent: 10-18826 (1998-01-01), None
patent: 2002-303109 (2002-10-01), None
patent: 2003-41915 (2003-03-01), None
Official Communication issued in corresponding European Patent Application No. 09002269.0 mailed on Aug. 18, 2009.

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