Invention Grant
- Patent Title: Switchable finger follower for a valve train of an internal combustion engine
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Application No.: US18024172Application Date: 2021-08-10
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Publication No.: US11933199B2Publication Date: 2024-03-19
- Inventor: Andreas Biermann , Rainer Schwinn , Adrian Bilan , Brian Koop , Jinhwan Jeon , Frank Himsel
- Applicant: Schaeffler Technologies AG & Co. KG
- Applicant Address: DE Herzogenaurach
- Assignee: Schaeffler Technologies AG & Co. KG
- Current Assignee: Schaeffler Technologies AG & Co. KG
- Current Assignee Address: DE Herzogenaurach
- Priority: DE 2020122920.8 2020.09.02
- International Application: PCT/DE2021/100679 2021.08.10
- International Announcement: WO2022/048703A 2022.03.10
- Date entered country: 2023-03-01
- Main IPC: F01L1/18
- IPC: F01L1/18 ; F01L1/46

Abstract:
A switchable finger follower for a valve train of an internal combustion engine includes an outer and an inner lever, which at a first longitudinal end run pivotably relative to one another via respective bores on a common shaft. At this longitudinal end, the finger follower has a gas-exchange valve contact face on an underside. The outer lever has a pivot bearing on the underside at a further longitudinal end, and at least the inner lever has a cam running face on an upper side. The inner and outer levers are connectable to one another via at least one coupling slide, which spans a separation area between the levers. The outer and inner levers are braced relative to one another via a cam return spring, and the shaft is connected to the bore of the outer lever by an interference fit. To mount the inner lever relative to the shaft without radial play but in a rotatable fashion, the bore of the inner lever includes, in its semi-circular segment facing the upper side, a pointed arch composed of two circular arcs as contact means.
Public/Granted literature
- US20230279788A1 SWITCHABLE FINGER FOLLOWER FOR A VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE Public/Granted day:2023-09-07
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