CN110847995B - 用于往复式活塞发动机的可变气门机构 - Google Patents

用于往复式活塞发动机的可变气门机构 Download PDF

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CN110847995B
CN110847995B CN201910774872.6A CN201910774872A CN110847995B CN 110847995 B CN110847995 B CN 110847995B CN 201910774872 A CN201910774872 A CN 201910774872A CN 110847995 B CN110847995 B CN 110847995B
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switching
lever
push rod
linear actuator
variable valve
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CN110847995A (zh
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B·诺埃
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Schaeffler Holding China Co Ltd
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Schaeffler Technologies AG and Co KG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/031—Electromagnets

Abstract

本发明涉及一种往复式活塞发动机的可变气门机构，其针对每个气缸具有至少一个换气阀，所述换气阀的阀行程分别由凸轮轴的至少一个凸轮预给定并且借助可切换的气门压杆通过在横向孔中被引导并且从所述气门压杆的侧壁突出的切换销栓的轴向移动而能够被选择性地关断或转换成所述换气阀的另一种行程变化，其中，所述气门压杆的切换销栓通过连接元件与至少一个切换板(3)连接，所述切换板平行于凸轮轴布置并且能够借助至少一个在内燃机上固定的线性致动器(1)克服弹簧元件的力从静止位置移动到切换位置，其中，在所述线性致动器(1)的推杆(2)和所述切换板(3)之间安装有弹簧单元，所述弹簧单元适于存储所述推杆(2)的往复直线运动。

Description

用于往复式活塞发动机的可变气门机构
技术领域
本发明涉及一种往复式活塞发动机的可变气门机构，针对每个气缸具有至少一个换气阀，该换气阀的阀行程分别由凸轮轴的至少一个凸轮预给定并且借助可切换的气门压杆通过在横向孔中被引导并且从气门压杆的侧壁突出的切换销栓的轴向移动而能够选择性地被关断或被转换成换气阀的另一种行程变化，其中，气门压杆的切换销栓通过连接元件与至少一个切换板连接，该切换板平行于凸轮轴布置并且可借助于至少一个在内燃机上固定的线性致动器克服弹簧元件的力从静止位置纵向移动到切换位置。
背景技术
在申请人的尚未公开的专利申请DE 10 2017 101 792.5中描述了可变气门机构的这种布置。在那里，线性致动器安装在内燃机的气缸盖的纵向侧上并且与切换板处于作用连接中。切换板在气缸盖的另一端支撑在构造为压缩弹簧的弹簧元件上。线性致动器增大了内燃机的安装空间，这根据安装条件而定是不利的。此外，在切换板和切换销栓之间使用弹性连接元件作为能量存储器。这些连接元件在某些条件下在它们的边界处顶撞并且在它们的设计方面很困难。
发明内容
本发明的目的是，消除这些缺点并提供线性致动器和切换板之间的作用连接，该作用连接使得能够实现线性致动器的其他类型的连接和其他类型的附装。
根据本发明，该目的通过以下方式实现：在线性致动器的推杆与切换板之间安装弹簧单元，该弹簧单元实施成用于存储推杆的往复直线运动。因此，在切换板和切换销栓之间可以省去费事的弹性连接元件，特别是板簧，因为在切换板和线性致动器之间发生能量存储。
在本发明的另一方案中提出，线性致动器横向于切换板固定，推杆与在内燃机上固定地安置的扭转弹簧的一端部处于作用连接中，并且扭转弹簧的另一端部与切换板连接。在此，在切换板上布置杠杆，其中，扭转弹簧的另一端部接触杠杆。由此，线性致动器可以横向于切换板安装在空间上有利的位置处，其中，可以实现不同的位置。优选，杠杆通过冲压而与切换板分开并且与切换板大致成直角地定向。为了将推杆的往复直线运动有利地传递到扭转弹簧上，提出在内燃机上固定地安置的枢转杆，该枢转杆本身又与扭转弹簧的所述一端部处于作用连接中。
通过根据本发明的方案得到一种布置，在该布置中，线性致动器可以布置在横向于切换板上的任何位置处并且此外能量存储不是由单个的弹性连接元件进行，而是由线性致动器和切换板之间的弹簧单元进行。
附图说明
在附图中描述了本发明：
图1示出线性致动器及其与切换板的连接的立体视图。
图2示出根据图1的线性致动器和开切换的侧视图。
具体实施方式
在图1和图2中，在详细示出时，用1一般性地标记线性致动器，其在内燃机上固定地布置并且具有推杆2，推杆传递线性致动器的往复直线运动。用3标记切换板，其安置在至少一个平板4上。平板4本身是卡箍5的组成部分，该卡箍与线性致动器连接。在卡箍上固定有两个销栓，其中，一个销栓形成用于枢转杆6的轴承，该枢转杆与推杆2处于作用连接中。枢转杆6的超出推杆地延长的端部与扭转弹簧7的一端部处于作用连接中，该扭转弹簧可枢转地安置在第二销栓上。扭转弹簧7的另一端部与杠杆8接触，该杠杆与切换板3基本上成直角地定向并且优选与切换板3一体地制成。
推杆2在线性致动器启动时使枢转杆6根据图1和2向下枢转并且枢转杆本身使扭转弹簧7的所述一端部枢转。只要切换板允许移动，扭转弹簧就将输入运动传送给杠杆8。如果切换板3在该时间点不能运动，则扭转弹簧7存储其输入枢转，直到切换板3允许所有切换销栓移动。
附图标记列表
1)线性致动器
2)推杆
3)切换板
4)平板
5)卡箍
6)枢转杆
7)扭转弹簧
8)杠杆

Claims (5)

1.往复式活塞发动机的可变气门机构，针对每个气缸具有至少一个换气阀，所述换气阀的阀行程分别由凸轮轴的至少一个凸轮预给定并且借助可切换的气门压杆通过在横向孔中被引导并且从所述气门压杆的侧壁突出的切换销栓的轴向移动而能够被选择性地关断或转换成所述换气阀的另一种行程变化，其中，所述气门压杆的切换销栓通过连接元件与至少一个切换板(3)连接，所述切换板平行于凸轮轴布置并且能够借助至少一个在内燃机上固定的线性致动器(1)克服弹簧元件的力从静止位置移动到切换位置，其特征在于，在所述线性致动器(1)的推杆(2)和所述切换板(3)之间安装有弹簧单元，所述弹簧单元适于存储所述推杆(2)的往复直线运动。
2.根据权利要求1所述的可变气门机构，其特征在于，所述线性致动器(1)横向于所述切换板(3)地固定，所述推杆(2)与在内燃机上固定地安置的扭转弹簧(7)的一端部处于连接中，并且，所述扭转弹簧(7)的另一端部与切换板(3)连接。
3.根据权利要求2所述的可变气门机构，其特征在于，在所述切换板(3)上设置有杠杆(8)，并且所述扭转弹簧(7)的所述另一端部接触所述杠杆(8)。
4.根据权利要求3所述的可变气门机构，其特征在于，所述杠杆(8)通过冲压而与所述切换板(3)分离并且与切换板(3)大致成直角地定向。
5.根据权利要求2所述的可变气门机构，其特征在于，所述推杆(2)控制一在内燃机上固定地安置的枢转杆(6)，所述枢转杆本身与所述扭转弹簧(7)的所述一端部处于作用连接中。
CN201910774872.6A 2018-08-21 2019-08-21 用于往复式活塞发动机的可变气门机构 Active CN110847995B (zh)

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DE102018120270.9A DE102018120270A1 (de) 2018-08-21 2018-08-21 Variabler Ventiltrieb für Hubkolbenbrennkraftmaschinen
DE102018120270.9 2018-08-21

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DE102018116070A1 (de) 2018-07-03 2020-01-09 Schaeffler Technologies AG & Co. KG Modul für einen hubvariablen Ventiltrieb einer Brennkraftmaschine
DE102018122787A1 (de) 2018-09-18 2020-03-19 Schaeffler Technologies AG & Co. KG Modul für einen hubvariablen Ventiltrieb einer Brennkraftmaschine
CN114233431A (zh) * 2020-09-09 2022-03-25 舍弗勒技术股份两合公司 具有杠杆元件的配气机构控制设备

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Publication number Priority date Publication date Assignee Title
US4151817A (en) * 1976-12-15 1979-05-01 Eaton Corporation Engine valve control mechanism
CN1150618A (zh) * 1995-03-28 1997-05-28 易通公司 气阀控制系统
US5690066A (en) * 1996-09-30 1997-11-25 Eaton Corporation Engine valve control actuator with knee action linkage
US6499451B1 (en) * 2001-12-17 2002-12-31 Delphi Technologies, Inc. Control system for variable activation of intake valves in an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151817A (en) * 1976-12-15 1979-05-01 Eaton Corporation Engine valve control mechanism
CN1150618A (zh) * 1995-03-28 1997-05-28 易通公司 气阀控制系统
US5690066A (en) * 1996-09-30 1997-11-25 Eaton Corporation Engine valve control actuator with knee action linkage
US6499451B1 (en) * 2001-12-17 2002-12-31 Delphi Technologies, Inc. Control system for variable activation of intake valves in an internal combustion engine

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