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公开(公告)号：US11808180B1
公开(公告)日：2023-11-07
申请号：US18114466
申请日：2023-02-27
Applicant: Caterpillar Inc.
Inventor： Jeremy C. Adams , Eric D. Wiebrecht
CPC classification number: F01L13/0005 , F01L1/2411 , F01L2013/001 , F01L2305/00
Abstract: An engine valve actuation system includes a lifter sleeve having a control fluid slot formed therein and extending from an outer sleeve surface to an inner sleeve surface. A valve lifter is movable in a sleeve bore in the lifter sleeve and limited from rotation about a longitudinal axis. The valve lifter includes a hydraulically actuated activation-deactivation switch, and a control fluid port in continuous fluid communication with the control fluid slot.
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