Variable valve timing
AssigneeMechadyne PLC
InventorsDerek Frost, Timothy Mark Lancefield
Life of this patent
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Abstract
A valve operating mechanism comprises a hollow shaft (10), a sleeve journalled on the hollow shaft and having a cam, a coupling yoke (16) connected by a first pivot pin (18) to the hollow shaft (10) and by a second pivot pin (20) to the sleeve and means for pivoting the yoke (16) to effect a phase change between the hollow shaft (10) and the sleeve, wherein the means for pivoting the yoke (16) comprises an actuating rod (24) slidably received in the hollow shaft (10), a cam surface on the actuating rod (24) and a plunger (22) passing through a generally radial bore in the hollow shaft (10) to cause the yoke (16) to pivot in response to axial movement of the actuating rod (24).
Claims9
A valve operating mechanism comprising a hollow shaft, a sleeve journalled on the hollow shaft and having a cam, a coupling yoke connected by a first pivot pin to the hollow shaft and by a second pivot pin to the sleeve and means for pivoting the yoke to effect a phase change between the hollow shaft and the sleeve, wherein the means for pivoting the yoke comprise an actuating rod slidably received in the hollow shaft, a cam surface on the actuating rod and a plunger passing through a generally radial bore in the hollow shaft and being in operative contact with said cam surface and the yoke to cause the yoke to pivot in response to axial movement of the actuating rod.
Dependencies are inferred from the claim text.