CN104619960B - 用于运行具有电液压的阀控制装置的内燃机的方法 - Google Patents
用于运行具有电液压的阀控制装置的内燃机的方法 Download PDFInfo
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Classifications
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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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
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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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
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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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
- F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
- F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve
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- Valve Device For Special Equipments (AREA)
Abstract
本发明涉及一种用于运行具有电液压的阀控制装置(1)的内燃机(4)的方法,所述阀控制装置用于以可变升程的方式驱动换气阀(3),所述阀控制装置包含:凸轮轴(6);和设置在凸轮轴和换气阀之间的驱动路径中的液压系统,所述液压系统连接在内燃机的压力介质供给装置(14)上;由凸轮轴的凸轮(5)驱动的第一液压活塞(8);和朝向打开方向驱动换气阀的第二液压活塞(9);由液压活塞限界的容积可变的压力腔(10);和将压力腔与卸压腔(11)连接的控制通道(12);设置在控制通道中的电控制的液压阀(15),所述液压阀在打开位置中允许液压介质流通过控制通道并且在关闭位置中阻断液压介质流通过控制通道;和电子控制机构(16),以用于根据内燃机的运行参数控制液压阀。为了改进内燃机的冷启动表现,在启动阶段期间,液压阀在第一液压活塞的两个直接相继的升程之间关闭并且重新打开至少一次。
Description
技术领域
本发明涉及一种用于运行具有电液压的阀控制装置的内燃机的方法。
背景技术
从WO 2011/069836 A1中已知一种用于运行内燃机的这类方法。在此,在内燃机的冷启动阶段期间,应在最小的提升高度和最大的关闭时间点之内调整负荷变化所需要的换气阀升程。对此,接通液压阀,使得仅压力腔中的部分容积由压力介质填充进而仅部分地操作换气阀。
发明内容
本发明的目的是这类方法的有利的改进形式以用于改进内燃机的启动表现和尤其是冷启动表现。
所提出的方法设为用于运行具有电液压的阀控制装置的内燃机,所述阀控制装置用于以可变升程的方式驱动沿关闭方向加载弹力的换气阀。电液压的阀控制装置包含凸轮轴和设置在凸轮轴和换气阀之间的驱动路径中的液压系统。液压系统连接在内燃机的压力介质供应装置上。由凸轮轴的凸轮驱动第一液压活塞。换气阀沿打开方向由第二液压活塞驱动。在液压活塞之间设有压力腔。控制通道将压力腔与卸压腔连接。在控制通道中设置有电控制的液压阀,所述液压阀在液压阀的打开位置中允许液压介质流通过控制通道并且在关闭位置中阻断液压介质流通过控制通道。液压阀由电子控制机构根据内燃机的运行参数来控制。在内燃机的启动阶段期间,尤其在内燃机的冷启动阶段期间,液压阀在第一液压活塞的两个直接相继的升程之间关闭并且重新打开至少一次。
附加地,在启动阶段期间,在第一液压活塞提升期间关闭的液压阀在换气阀的最大升程之前重新打开。
通过在第一液压活塞的两个直接相继的升程之间关闭和打开液压阀,改进压力腔用液压介质的再填充。此外,通过在两个直接相继的升程之间打开和关闭液压阀加热液压系统,其方式在于将电控制的液压阀的电能转换成热并且输送给液压阀的阀座、阀活塞和压力介质。
附图说明
本发明根据在图1至3中示出的实施例来详细阐述。在此示出:
图1示出贯穿用于执行所提出的方法的配气机构的剖面图,
图2示出在接近启动的时间窗口中的配气机构关于分段示出的曲轴角的特性的序列,和
图3示出在启动阶段的随后的时间窗口中的与图2的序列类似的序列。
具体实施方式
图1示出本身已知的电液压的阀控制装置1的原理图。阀控制装置1用于以可变升程的方式驱动内燃机4的沿关闭方向通过阀弹簧2加载力的换气阀3。在凸轮轴6上设置有凸轮5,所述凸轮借助于杯形挺杆7驱动第一液压活塞8。第二液压活塞9将以进气阀或排气阀的形式的换气阀3沿其打开方向驱动。在第一液压活塞8和第二液压活塞9之间,形成容积可变的压力腔10和卸压腔11。卸压腔11借助于控制通道12与压力腔10连接并且包含弹簧加载的储压器13。设置在凸轮轴6和换气阀3之间的驱动路径中的液压系统连接在内燃机4的压力介质供应装置14上并且在此连接于其润滑介质循环。
在控制通道12中设置有以二位二通切换阀的结构类型的电控制的液压阀15。液压阀15在没有通电的状态下打开并且允许压力介质流通过控制通道12。在通电的状态下,液压阀15阻断控制通道12。对液压阀15的电控制根据内燃机4的运行参数借助于电子控制机构16来进行。控制机构16能够集成到发动机控制设备中。
阀控制装置1的本身已知的功能能够如下总结:位于压力腔10中的压力介质作用为液压传动杆。第一液压活塞8的由凸轮5预设的升程在液压阀15关闭时借助于第二液压活塞9传递到换气阀3上。在液压活塞15打开时,将液压介质部分地或完全地推到卸压腔11中。凸轮提升和换气阀提升的液压脱耦需要液压的阀制动装置17,所述阀制动装置对由第二液压活塞9挤回的压力介质进行节流从而将关闭的换气阀3制动到在机械和声学方面可接受的安放到阀座18上的安放速度。
参考图1的阀控制装置1,关于曲轴角γ详细阐述在图2和3中示出的序列20、21。所述序列分别示出在内燃机4的启动过程期间的第一液压活塞8的升程的变化曲线22以及换气阀3的升程的变化曲线23、24和液压阀15的通电28、29、30的变化曲线。图2示出序列20,所述序列在第一曲轴旋转期间在冷启动内燃机4时使用。在此,在两个直接相继的升程变化曲线22、23之间,液压阀15借助于通电28关闭并且随后在角度范围Δγ1中重新打开。在凸轮5接合到第一液压活塞8上期间,液压阀15借助于通电29关闭。在换气阀3的最大升程h(max)之前,切断通电并且液压阀15再次打开,使得换气阀3仅在缩短的角度范围中保持打开。通过压力腔10中的压力变化,所述压力腔至少部分地清空并且在凸轮5的基圆中延伸直至对液压阀15重新通电28的角度范围Δγ2中,在液压阀15仍打开的情况下由于出现的压力变化再次填充。借助于在第一液压活塞8的两个直接相继的升程之间的由通电28引起的关闭和打开过程,结合在角度范围Δγ1中对压力腔10的再填充引起改进地并且尽可能与压力介质的粘性无关地填充压力腔10。此外,凸轮轴每旋转一圈对液压阀15更频繁地执行的通电在内燃机4的启动阶段期间引起对液压系统的加热。
图3示出序列21,所述序列21对序列20替选地或在执行预定数量的图2的序列20之后经由凸轮轴旋转预定数量的圈数执行。不同于序列20,序列21在第一液压活塞8的整个提升期间具有延长的通电30。由此,换气阀3更长时间地保持打开并且完全适应于由两次通电28、30限界的角度范围Δγ1以用于再填充压力腔10。
应该理解的是,在第一液压活塞8的两个直接相继的升程之间的通电28的数量、角度范围Δγ1和Δγ2的扩展和通电29的持续时间能够匹配于内燃机的参数、压力介质和配气机构。
附图标记列表:
1 阀控制装置
2 阀弹簧
3 换气阀
4 内燃机
5 凸轮
6 凸轮轴
7 杯形挺杆
8 第一液压活塞
9 第二液压活塞
10 压力腔
11 卸压腔
12 控制通道
13 储压器
14 压力介质供给装置
15 液压阀
16 电子控制机构
17 液压的阀制动装置
18 阀座
20 序列
21 序列
22 变化曲线
23 变化曲线
24 变化曲线
28 电流变化曲线
29 电流变化曲线
30 电流变化曲线
h(max) 最大升程
γ 曲轴角
Δγ1 角度范围
Δγ2 角度范围
Claims (2)
1.一种用于运行具有电液压的阀控制装置(1)的内燃机(4)的方法,所述阀控制装置用于以可变升程的方式驱动沿关闭方向加载弹力的换气阀(3),所述阀控制装置包含:凸轮轴(6);和设置在所述凸轮轴(6)和所述换气阀(3)之间的驱动路径中的液压系统,所述液压系统连接在所述内燃机(4)的压力介质供给装置(14)上;由所述凸轮轴(6)的凸轮(5)驱动的第一液压活塞(8);和朝向打开方向驱动所述换气阀(3)的第二液压活塞(9);由所述第一液压活塞(8)和所述第二液压活塞(9)限界的容积可变的压力腔(10);和将所述压力腔(10)与卸压腔(11)连接的控制通道(12);设置在所述控制通道(12)中的电控制的液压阀(15),所述液压阀在所述液压阀(15)的打开位置中允许液压介质流通过所述控制通道(12)并且在所述液压阀(15)的关闭位置中阻断液压介质流通过所述控制通道(12);和电子控制机构(16),所述电子控制机构用于根据所述内燃机(4)的运行参数控制所述液压阀(15),
其特征在于,在所述内燃机(4)的启动阶段期间,所述液压阀(15)在所述第一液压活塞(8)的两个直接相继的升程之间关闭并且重新打开至少一次。
2.根据权利要求1所述的方法,其特征在于,在启动阶段期间,将在所述第一液压活塞(8)的提升期间关闭的所述液压阀(15)在所述换气阀(3)的最大升程(h(max))之前再次打开。
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DE102012212989.8 | 2012-07-24 | ||
DE102012212989.8A DE102012212989A1 (de) | 2012-07-24 | 2012-07-24 | Verfahren zum Betrieb einer Brennkraftmaschine mit elektrohydraulischer Ventilsteuerung |
PCT/DE2013/200072 WO2014015869A1 (de) | 2012-07-24 | 2013-07-24 | Verfahren zum betrieb einer brennkraftmaschine mit elektrohydraulischer ventilsteuerung |
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CN104619960A CN104619960A (zh) | 2015-05-13 |
CN104619960B true CN104619960B (zh) | 2017-06-27 |
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US (1) | US9435231B2 (zh) |
EP (1) | EP2877717B1 (zh) |
CN (1) | CN104619960B (zh) |
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WO (1) | WO2014015869A1 (zh) |
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US9464590B2 (en) | 2014-04-16 | 2016-10-11 | Fca Us Llc | Variable stroke direct injection fuel pump system |
CN109653829B (zh) * | 2018-12-26 | 2020-10-23 | 王自勤 | 一种气门滞后角的电液调控方法及装置 |
EP3715594B1 (de) * | 2019-03-29 | 2021-10-27 | ABB Schweiz AG | Ventiltrieb mit hydraulischem verzögerungselement für einen verbrennungsmotor |
US11566545B2 (en) | 2019-05-02 | 2023-01-31 | Caterpillar Inc. | Cam actuated gas admission valve with electro-hydraulic trim control |
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- 2013-07-24 EP EP13758723.4A patent/EP2877717B1/de active Active
- 2013-07-24 WO PCT/DE2013/200072 patent/WO2014015869A1/de active Application Filing
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EP2877717A1 (de) | 2015-06-03 |
EP2877717B1 (de) | 2016-06-08 |
US20150176439A1 (en) | 2015-06-25 |
US9435231B2 (en) | 2016-09-06 |
WO2014015869A1 (de) | 2014-01-30 |
CN104619960A (zh) | 2015-05-13 |
DE102012212989A1 (de) | 2014-01-30 |
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