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Finger follower for lobe switching and single source lost motion

A follower and actuation technology, applied in the direction of engine components, combustion engines, engine control, etc., can solve problems such as limited applicability, achieve the effects of eliminating changes in locking or support positions, reducing costs, and simplifying the system

Active Publication Date: 2021-07-23
JACOBS VEHICLE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the above disadvantages, prior art switching finger followers may only have limited applicability to lost motion valve actuation systems

Method used

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  • Finger follower for lobe switching and single source lost motion
  • Finger follower for lobe switching and single source lost motion
  • Finger follower for lobe switching and single source lost motion

Examples

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Embodiment Construction

[0039] Figure 4 is a perspective view of a toggle finger follower system 100 assembled according to an example of the present disclosure. Figure 5 is an exploded perspective view of the same system. In particular, the switching finger follower may include a body or housing 400 arranged to support or house various other system components. The body 400 may extend in a longitudinal direction from a motion transfer or valve engagement end 410 adapted to connect or engage with one or more engine valves to a pivot end 420, the pivot end 420 Adapted for connection or engagement with a pivot which may contain HLA. Body 400 may further include a pair of lateral, longitudinally extending arms 402 and 404 defining a lever groove or pocket 406 therebetween. Arms 402 and 404 may include respective pivot pin receiving holes 403 and 405 at valve engaging end 410 to secure lever pivot pin 412 therein. A pair of side roller followers 430 and 434 may be secured to arms 402 and 404 by shaf...

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Abstract

A switching finger follower for an engine valve train utilizes an adjustable support assembly that eliminates potential for partial engagement during operation. A lever engagement member or latch is disposed for movement on the follower body and interacts with a lever to provide a constant contact geometry. The finger follower may be configured as a lost motion device and may include a biasing assembly and a travel limiter. The latch may support the lever in at least one precise position and may support the lever in a second position for partial lost motion, or permit the lever to pivot free of the latch for complete lost motion, as in cylinder deactivation applications.

Description

[0001] Related applications and priority claims [0002] This application claims priority to US Provisional Patent Application Serial No. 62 / 776,450, filed December 6, 2018 and entitled SWITCHINGFINGER FOLLOWER. This application further claims priority to U.S. Provisional Application Serial No. 62 / 776,453 filed December 6, 2018 and entitled SWITCHING FINGERFOLLOWER FOR SINGLE-SOURCE LOST MOTION right. The subject matter of two of these provisional applications is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure generally relates to systems and methods for actuating one or more engine valves in an internal combustion engine. More specifically, the present disclosure relates to systems and methods for varying the operational relationship between a source of motion, such as a cam, and one or more engine valves. Such systems and methods may incorporate a rocker arm in the form of a finger follower that provides for selective swi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/00
CPCF01L1/185F01L2013/001F02D13/0211F01L2305/02F01L2001/186F01L2303/00F02D13/06Y02T10/12F01L13/0005F01L1/2405F01L2305/00
Inventor J·曼德尔J·D·巴尔特鲁基D·M·费雷拉
Owner JACOBS VEHICLE SYST
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