Engine camshaft phasing

Details Engine camshaft phasing Engine camshaft phasing

1990-02-12

1990-12-11

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, F01L 134

Patent

active

049762290

ABSTRACT:
A phase adjustment mechanism for setting the phase of the engine camshaft relative to that of the crankshaft. The operative coupling of the crankshaft to the camshaft is via two sets of splines, one set having pitch different from that of the other set. A spline engagement ring contains a spline of one set on its O.D. and a spline of the other set on its I.D. The axial positioning of the ring controls the relative phasing and is accomplished by a screw and nut mechanism with the nut being operated by a worm drive that is under the control of the engine ECU.

REFERENCES:
patent: 4421074 (1983-12-01), Garcea et al.
patent: 4463712 (1984-08-01), Stojek et al.
patent: 4535731 (1985-08-01), Banfi
patent: 4754727 (1988-07-01), Hampton
patent: 4811698 (1989-03-01), Akasaka et al.
patent: 4856465 (1989-08-01), Denz et al.
patent: 4889086 (1989-12-01), Scapecchi

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