Valve timing control device for an internal combustion engine

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

1985-05-10

1986-03-18

Lazarus, Ira S.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9027, 123 9031, F01L 112

Patent

active

045761272

ABSTRACT:
A first timing belt transmits rotation of a crankshaft to an exhaust valve operating camshaft whose rotation is in turn transmitted through a second timing belt to an intake valve operating camshaft. A pair of adjusting pulleys are provided which is brought into contact with a tension side section and a slack side section of the second timing belt and movable in unison with each other toward and away from the timing belt sections to vary the lengths of same and thereby vary the phase of the intake valve operating camshaft relative to the exhaust valve operating camshaft in accordance with operating conditions of the engine.

REFERENCES:
patent: 2010056 (1935-08-01), Brush
patent: 3888217 (1975-06-01), Hisserich
patent: 4174683 (1979-11-01), Vivian
patent: 4177689 (1979-12-01), Zeilinger et al.
patent: 4480603 (1984-11-01), Tsuboi
patent: 4484543 (1984-11-01), Maxey
patent: 4525151 (1985-06-01), Tomita et al.

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