Valve timing control apparatus for an internal combustion engine

Details Valve timing control apparatus for an internal combustion engine Valve timing control apparatus for an internal combustion engine

1998-09-14

2000-01-18

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9018, F01L 1344, F01L 1300

Patent

active

060149523

ABSTRACT:
Each of a positive spline member and a negative spline member is engaged through a spline engagement with a vane rotor. Both the positive spline member and the negative spline member are securely fixed to a cam shaft by means of a bolt. The cam shaft causes an axial reciprocative movement relative to the vane rotor. Each external spline formed on the positive spline member is brought into contact at its trailing side with an internal spline of the vane rotor. Each external spline formed on the negative spline member is brought into contact at its leading side with an internal spline of the vane rotor. This arrangement eliminates any backlash formed between the internal splines of the vane rotor and the external splines of the positive and negative spline members.

REFERENCES:
patent: 4811698 (1989-03-01), Akasaka et al.
patent: 5329895 (1994-07-01), Nishida et al.
patent: 5381764 (1995-01-01), Fukuma et al.
patent: 5638782 (1997-06-01), Eguchi et al.
patent: 5881690 (1999-03-01), Park
patent: 5924397 (1999-07-01), Moriya et al.
"The Variable Valve Timing System-Application on a V8 Engine" by A. Titolo.

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