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Bias mechanisms for a rocker arm and lost motion component of a valve bridge

A valve bridge, lost motion technology, applied to engine components, machines/engines, valve assemblies, etc., to solve problems such as separation and collision, noise or collision damage, loss of hydraulic fluid supply, etc.

Inactive Publication Date: 2016-12-14
JACOBS VEHICLE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complicating this supply of hydraulic fluid is the presence of interstitial spaces (i.e., gaps) between components in the valve train, which can cause separation and collision of adjacent valve train components, resulting in noise or collision damage, or such adjacent Loss of hydraulic fluid supply between components

Method used

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  • Bias mechanisms for a rocker arm and lost motion component of a valve bridge
  • Bias mechanisms for a rocker arm and lost motion component of a valve bridge
  • Bias mechanisms for a rocker arm and lost motion component of a valve bridge

Examples

Experimental program
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Embodiment Construction

[0022] Now refer to figure 2 , which shows a valve actuation system 200 according to the invention. As shown, system 200 includes valve actuation motion source 110 described above operatively connected to motion receiving end 212 of rocker arm 210 . Rocker arm 210 also includes a motion transfer end 214 that may be configured to support a biasing mechanism 250, as will be described further below. System 200 further includes valve bridge 220 operably connected to two or more engine valves 140 . The valve bridge 220 may include a lost motion component 230 as is known in the art of bridge braking systems. The valve bridge 240 may also be configured to support a biasing mechanism 240, as will be described further below.

[0023] Although figure 2 Not shown in , but rocker arm 210 is typically supported by a rocker shaft, and rocker arm 210 reciprocates about the rocker shaft. Also, the rocker shaft may contain elements of a hydraulic fluid supply 260 in the form of hydraulic ...

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PUM

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Abstract

Systems for actuating at least two engine comprise a valve bridge operatively connected to the at least two engine valves and having a hydraulically-actuated lost motion component. A rocker arm has a motion receiving end configured to receive valve actuation motions from a valve actuation motion source and a motion imparting end for conveying the valve actuation motions and hydraulic fluid to the lost motion component. The motion receiving end is biased toward the valve actuation motion source. A bias mechanism, supported by either the rocker arm, valve bridge or both, is configured to bias the motion receiving end of the rocker arm and the lost motion component into contact with each other. By maintaining such contact, the bias mechanism helps maintain the supply of hydraulic fluid from the rocker arm to the lost motion component.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 024,629, filed July 15, 2014, entitled "Valve Bridge With Integrated Lost Motion System," the teachings of which are incorporated by reference incorporated into this application. [0003] This application is also related to co-pending application entitled "System Comprising An Accumulator Upstream Of A Lost Motion Component In A Valve Bridge" (Attorney Docket No. 46115.00. 0063), and a co-pending application entitled "Pushrod Assembly" (Attorney Docket No. 46115.00.0064), both of which were filed on the same date. technical field [0004] The present application relates generally to actuating one or more engine valves in an internal combustion engine, and more particularly to valve actuation including lost motion systems. Background technique [0005] As is known in the art, valve actuation in internal combustion engines controls the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/00F01L1/24F01L1/18F01L9/10
CPCF01L1/181F01L1/20F01L13/06F01L13/065F01L2800/10F01L1/146F01L1/18F01L1/26F01L1/46F01L9/10F01L1/2422
Inventor J·巴尔特鲁基G·M·格龙
Owner JACOBS VEHICLE SYST