Variable valve control for an internal combustion engine

Details Variable valve control for an internal combustion engine Variable valve control for an internal combustion engine

1998-10-15

2000-04-04

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9027, 123 9031, 1231933, F01L 104, F01L 134

Patent

active

060448164

ABSTRACT:
In a variable control arrangement in an internal combustion engine including intake and exhaust valves, a valve operating mechanism with a first camshaft controlling the intake valve opening times and a second camshaft controlling the intake valve closing times, a four gear coupler drive mounted on the first and second camshafts for controlling their relative angular positions, a control wheel supported coaxially with one of the camshafts and connected to the coupler drive for adjusting the relative angular position of the first and second camshafts, and a control arrangement including a control motor for operating the control wheel, the coupler drive with the control wheel and the valve operating mechanism are combined in a camshaft bearing housing assembly which is mounted on the cylinder head.

REFERENCES:
patent: 4535733 (1985-08-01), Honda
patent: 4546735 (1985-10-01), O'Neal
patent: 4862845 (1989-09-01), Butterfield et al.
patent: 4976229 (1990-12-01), Charles
patent: 4986801 (1991-01-01), Ohlendorf et al.
patent: 5052350 (1991-10-01), King
patent: 5178105 (1993-01-01), Norris
patent: 5431132 (1995-07-01), Kreuter et al.
patent: 5540197 (1996-07-01), Golovatai-Schmidt et al.
patent: 5555860 (1996-09-01), Wride
patent: 5586527 (1996-12-01), Kreuter
patent: 5592906 (1997-01-01), Kreuter et al.
patent: 5680837 (1997-10-01), Pierik

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