F - Mech Eng,Light,Heat,Weapons – 01 – L
Patent
F - Mech Eng,Light,Heat,Weapons
01
L
F01L 1/04 (2006.01) F01L 1/14 (2006.01) F01L 1/26 (2006.01) F01L 13/00 (2006.01)
Patent
CA 2054879
TWO-STEP VALVE OPERATING MECHANISM Abstract of the Disclosure A camshaft has, for each valve lifter, a high lift cam between two low lift cams, the high lift cam fitting within the envelope of the low lift cams. The lifter comprises an outer tappet elongated in the direction of the camshaft and slidably mounted in an elongated bore in a cam carrier. The outer tappet is contacted by both low lift cams and operates two valves simultaneously. An elongated bore extending transverse of the outer tappet carries an elongated inner tappet which is contacted by the high lift cam. A hydraulically actuated locking mechanism couples the tappets for movement together for high lift operation and unlocks for low lift operation to allow the inner tappet to idle in the outer tappet.
Castellana John
Giannone Guy Ernest
Kunz Timothy Wilton
Mccarroll Michael Edward
Shost Mark Anthony
General Motors Corporation
Gowling Lafleur Henderson Llp
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