Variable valve performance mechanism in internal combustion engi

Details Variable valve performance mechanism in internal combustion engi Variable valve performance mechanism in internal combustion engi

1997-07-11

2000-10-17

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, 123 9031, F02D 1302, F01L 134

Patent

active

061315419

ABSTRACT:
An apparatus for adjusting an engine valve. The valve is actuated by a cam on a camshaft. The cam has a cam surface that drives the valve by way of a follower. The radius of the cam surface varies in the axial direction in an angular section of the cam. A pulley surrounds one end of the camshaft. The camshaft is rotated relative to the pulley to change the valve timing and the camshaft is also moved axially to change the lift of the valve by changing the area of the cam surface engaged by the follower.

REFERENCES:
patent: 4570581 (1986-02-01), Titolo
patent: 4794893 (1989-01-01), Masuda et al.
patent: 4850311 (1989-07-01), Sohn
patent: 5080055 (1992-01-01), Komatsu et al.
patent: 5329895 (1994-07-01), Nishida et al.
patent: 5381764 (1995-01-01), Fukuma et al.
Andrea Titolo: "Die Variable Ventilsteuerung von FIAT ", Mopotortechnische Zeitschrift, vol. 47, No. 5, pp. 185-188, 1986.

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