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Valve actuation system comprising two rocker arms and a collapsing mechanism

An engine valve and actuation technology, applied in the direction of machine/engine, mechanical equipment, engine control, etc., can solve the problems of unfeasible tightening mechanism, lack of space, and inability to accommodate the tightening mechanism

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

[0007] However, in some cases, deploying the tightening mechanism in the valve bridge is not feasible (for example, due to lack of sufficient space, or using a guided valve bridge that cannot accommodate the tightening mechanism) or the valve bridge is not required

Method used

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  • Valve actuation system comprising two rocker arms and a collapsing mechanism
  • Valve actuation system comprising two rocker arms and a collapsing mechanism
  • Valve actuation system comprising two rocker arms and a collapsing mechanism

Examples

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Embodiment Construction

[0021] figure 1 A valve actuation system 101 is schematically shown comprising a first rocker arm 104 and a second rocker arm 106 which are selectively coupled together such that valve actuation motion provided by a primary valve actuation motion source 102 Via the first rocker 104 and the second rocker 106 are communicated to one or more engine valves 108 (associated with a cylinder 109 of the internal combustion engine 100 ). Alternatively, the first and second rocker arms 104, 106 may be selectively disengaged from each other such that valve actuation motion applied to the first rocker arm 104 is not transferred to the second rocker arm 106, i.e., the valve actuation motion is lost . As is known in the art, the engine valves 108 may include intake valves, exhaust valves, or auxiliary valves, and in one embodiment, separate valve actuations may be provided for different engine valve types associated with a single cylinder. The system 101 is, for example, one instance of a...

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PUM

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Abstract

A valve actuation system for actuating at least one engine valve comprises a first half-rocker arm configured to receive main valve actuation motions from a main valve actuation motion source and a second rocker arm configured to actuate the at least one engine valve. A collapsing mechanism is also provided and configured relative to the first half-rocker arm and the second rocker arm, in a first collapsing mechanism state, to convey the main valve actuation motions from the first half-rocker arm to the second rocker arm and, in a second collapsing mechanism state, to prevent conveyance of the main valve actuation motions from the first half-rocker arm to the second rocker arm. The collapsing mechanism may be disposed in the first half-rocker arm or the second rocker arm, wherein the rocker arm not including the collapsing mechanism is provided with a collapsing mechanism contact surface.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of co-pending Provisional U.S. Patent Application Serial No. 62 / 776,935, entitled "Valve Actuation System Including Two Rocker Arms and Tensioning Mechanism," and filed December 7, 2018, which teaches The contents are hereby incorporated by reference. This application is also related to co-pending application entitled "Valve Actuation System Including At Least Two Rocker Arms and One-Way Linkage Mechanism" filed on the same date, attorney docket number JVSPP090US. technical field [0003] The present disclosure relates generally to valve actuation systems in internal combustion engines, and more particularly to valve actuation systems based on two rocker arms and a tightening mechanism. Background technique [0004] Valve actuation systems for use in internal combustion engines are well known in the art. Some valve actuation systems are capable of providing so-called secondary val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/00
CPCF01L1/26F01L1/18F01L2001/186F01L13/06F01L1/24F01L1/2416F01L2305/00F02D13/04F02D13/06F01L1/181
Inventor M·亚历山德鲁J·D·巴尔特鲁基G·S·罗伯茨J·曼德尔
Owner JACOBS VEHICLE SYST