Variable valve control for piston internal combustion engine

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Patent

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Details

Other Related Categories

123 9027, 123 9039, F01L 134, F01L 1300

Type

Patent

Status

active

Patent number

06098581&

Description

ABSTRACT:
In a variable valve control arrangement for an internal combustion engine including a cylinder head with a first camshaft having exhaust valve operating cams and intake valve opening cams, a second camshaft having intake valve closing cams, exhaust valve operating rocker arms pivotally supported on a rocker arm support shaft mounted on the cylinder head in a force transmitting relation with the exhaust cams of the first camshaft, intake operating rocker arms mounted on the same rocker arm support shaft, and engagement members disposed on the intake valve operating rocker arms and in contact with the intake cams of both camshafts for the transmission of the intake valve opening control movement of the first camshafts and the intake valve closing control movement of the second camshaft to the intake valves, the rocker arm support shaft is disposed below the first camshaft and is supported by bearing blocks disposed in the area between adjacent cylinders and by an additional support structure formed in the middle between adjacent bearing blocks on a well extending from the cylinder head.

REFERENCES:
patent: 4535733 (1985-08-01), Honda
patent: 4546735 (1985-10-01), O'Neal
patent: 4662323 (1987-05-01), Moriya
patent: 4862845 (1989-09-01), Butterfield et al.
patent: 5052350 (1991-10-01), King
patent: 5163390 (1992-11-01), Shimamoto
patent: 5178105 (1993-01-01), Norris
patent: 5431132 (1995-07-01), Kreuter et al.
patent: 5555860 (1996-09-01), Wride
patent: 5586527 (1996-12-01), Kreuter
patent: 5592906 (1997-01-01), Kreuter et al.

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