CN110582625B - 用于活塞式发动机的长度可调的连杆 - Google Patents
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- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
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- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
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- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
- F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
- F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
- F15B11/126—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators of the standard type with special circuit controlling means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
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- F15B2211/00—Circuits for servomotor systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
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- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/31552—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line
- F15B2211/31558—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line having a single output member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F15B2211/00—Circuits for servomotor systems
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- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means
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Abstract
本发明涉及一种用于活塞式发动机的长度可调的连杆,连杆具有配属于曲轴的第一连杆部分和配属于发动机活塞的第二连杆部分,其中,在一个连杆部分内构造有缸,而另一个连杆部分设有活塞,活塞以能移动的方式布置在缸内,并且根据活塞在缸内的位置限界出至少一个液压压力室。为了使得连杆除了短连杆长度和长连杆长度之外也可以占据中间位置,本发明规定,液压压力室能各自通过排放阀来封锁,使得活塞能够占据居中位置,在居中位置中,活塞限界出两个液压压力室。
Description
技术领域
本发明涉及一种用于活塞式发动机的长度可调的连杆,连杆具有配属于曲轴的第一连杆部分和配属于发动机活塞的第二连杆部分,其中,在一个连杆部分内构造有缸,而另一个连杆部分设有活塞,活塞以能移动的方式布置在缸内并且根据活塞在缸内的位置限界出至少一个液压压力室。每个压力室分别以油线路联接至活塞式发动机的发动机油供给部并与单向输入阀连接,所述单向输入阀允许液压介质的流入但是阻断其流出,
背景技术
此长度可调的连杆例如从WO2015/055582中已知。在此类连杆中,活塞可以占据两个位置,在这些位置中,活塞分别移行抵靠机械止动部,并且通过在止动部的另一侧上形成的压力室将活塞液压封锁。
连杆的这种长度调节的优点是,通过机械止动部清晰地限定了两个位置,使得两个位置可以配属有明确的压缩比。
WO2016203043A1披露了类似的连杆。
当然,无法通过两个连杆长度给出全部的压缩比,因此希望也实现中间位置。在DE102012020999A1中描述了一种方案,其中连杆的长度调节通过偏心装置实现,偏心装置借助支持活塞和缸旋转。
发明内容
因此,本发明的任务是改进前述类型的长度可调的连杆,使得连杆在短连杆长度与长连杆长度之间也可以占据中间位置。
此任务根据本发明通过如下方式解决,即压力室与所述单向输入阀并行地与实施为三位三通换向阀的排放阀连接,所述压力室能通过三位三通换向阀来封锁,使得活塞能够占据居中位置,在所述居中位置中,所述活塞限界出两个液压压力室,其中,所述三位三通换向阀-在第一切换位置中阻断一个压力室的流出并且允许另一个压力室的流出,
-在第二切换位置中阻断两个压力室的流出,并且
-在第三切换位置中释放所述一个压力室的流出并且阻断所述另一个压力室的流出。
此解决方案规定,对于居中位置有意地省去机械止动部。至少对于中间位置,以此获得了通过机械地并且以此被清晰限定的止动部确定了确定的连杆长度这样的优点。另一方面,获得的优点是可以将发动机的连杆长度并且以此可以将发动机的压缩比与相应的运行状态更好地匹配。优选地,两个连杆部分伸缩式地插入彼此。也可以优选在小连杆孔内使用要液压调节的偏心块。
根据本发明,每个压力室与单向输入阀连接,单向输入阀允许液压介质的流入但是阻断其流出。与能控制的排放阀的组合引起的是,在压力室被阻断时虽然液压介质不可以逸出,但是可以流入。换言之,这意味着补偿压力室内的可能的泄漏损耗。
以此方式可以简单地实现的是,一方面将长度可调的连杆调短并且另一方面将长度可调的连杆调长,并且通过阻断两个压力室将长度可调的连杆锁止在每个居中位置中。
根据优选实施方案,液压介质是发动机油,使得可以简单地将长度可调的连杆连接到发动机油供给部上。
也有利的是,排放阀构造为电磁控制阀。因此,在发动机运行期间可以通过简单地驱控电磁阀来调设连杆长度。
在此,特别有利的是,排放阀被设计为能驱控的,其中,爆震传感器装入到排放阀的驱控部中。由此,可以使得发动机总是在爆震边界附近运行。
对连杆的长度调节的调设可以以简单的方式在驱控排放阀的持续时间内来调控。
对排放阀的这种驱控以有利的方式也实现的是,依赖于另外的发动机特征数据,例如转速、负荷、消耗和速度,来实现连杆的长度调节。
附图说明
在下文中根据唯一的附图详细解释本发明。
图1示意性地示出了用于往复活塞式发动机的长度可调的连杆。
具体实施方式
图1示意性地示出了用于往复活塞式发动机的长度可调的连杆1。连杆1包括第一连杆部分2,第一连杆部分包括径向伸出的缸3,具有活塞5的第二连杆部分4插入到缸中。第二连杆部分4具有活塞杆6,活塞杆将活塞5与小连杆孔7连接,小连杆孔配属于内燃机的活塞销。缸3设有缸盖8,缸盖同时充当用于活塞5的上止动部。缸底9形成活塞5的下止动部。活塞5在图1中示出为处于中间位置,在中间位置中,长度可调的连杆1也占据在最大长度与最小长度之间的中间位置。在此位置中,双作用的活塞5将缸分为两个压力室10和11,压力室被填充以发动机油。其中每个压力室10、11以油线路12和13联接至内燃机的发动机油供给部。止回阀14、15位于油线路12和13中,这些止回阀允许油流入到压力室10和11内,但是阻断油从压力室的流出。与止回阀14、15并行地,油线路12和13分路至三位三通换向阀,通过三位三通换向阀可以以有选择的方式阻断一个压力室10或11的排放或两个压力室10和11的排放。在图1中图示的三位三通换向阀16的位置中,上压力室11的排放被打开,而下压力室10的排放被阻断。在三位三通换向阀的此位置中,发动机的惯性力导致活塞5向上朝通过缸盖8形成的止动部的方向上运动。发动机的实际上导致活塞向下运动的气体压力通过被阻断的压力室10来阻挡。当活塞向上运动时压力室10被进一步填充以发动机油,然而油无法流出。长度可调的连杆1因此在三位三通换向阀的此位置中占据其最大长度。
当由于所获知的发动机数据应缩短连杆长度时,例如在发动机趋近于爆震时的情况中,三位三通换向阀完全向左移动,使得下压力室10被打开并且处在下压力室10处的发动机油可以流出,而阻断上压力室11的排放。以此方式,活塞可以向下运动,直至低于爆震边界。如果这在达到下止动部之前发生,则可以设置如下的发动机控制,使得三位三通换向阀移行到居中位置,其中,将上压力室11和下压力室10都阻断。长度可调的连杆占据居中位置。以此,发动机可以总是在爆震边界附近运行。
附图标号列表
1 连杆
2 第一连杆部分
3 缸
4 第二连杆部分
5 活塞
6 活塞杆
7 连杆孔
8 缸盖
9 缸底
10 压力室
11 压力室
12 油线路
13 油线路
14 单向输入阀
15 单向输入阀
16 三位三通换向阀
Claims (7)
1.用于活塞式发动机的长度可调的连杆(1),所述连杆具有配属于曲轴的第一连杆部分(2)和配属于发动机活塞的第二连杆部分(4),其中,在一个连杆部分内构造有缸(3),而另一个连杆部分设有活塞(5),所述活塞(5)以能移动的方式布置在所述缸(3)内,并且根据所述活塞(5)在缸内的位置限界出至少一个液压压力室(10、11),每个压力室分别以油线路(12、13)联接至活塞式发动机的发动机油供给部并与单向输入阀(14、15)连接,所述单向输入阀(14、15)允许液压介质的流入但是阻断其流出,其特征在于,与所述单向输入阀(14、15)并行地,所述压力室(10、11)与三位三通换向阀(16)连接,所述压力室能通过三位三通换向阀(16)来封锁,使得所述活塞能够占据居中位置,在所述居中位置中,所述活塞限界出两个液压压力室(10、11),其中,所述三位三通换向阀
-在第一切换位置中阻断一个压力室(10)的流出并且允许另一个压力室(11)的流出,
-在第二切换位置中阻断两个压力室(10、11)的流出,并且
-在第三切换位置中释放所述一个压力室(10)的流出并且阻断所述另一个压力室(11)的流出。
2.根据权利要求1所述的长度可调的连杆,其特征在于,液压介质是发动机油。
3.根据权利要求1至2中任一项所述的长度可调的连杆,其特征在于,所述三位三通换向阀构造为电磁控制阀(16)。
4.根据权利要求1至2中任一项所述的长度可调的连杆,其特征在于,所述三位三通换向阀被设计为能驱控的,其中,爆震传感器装入到所述三位三通换向阀的驱控部中。
5.根据权利要求1至2中任一项所述的长度可调的连杆,其特征在于,在驱控所述三位三通换向阀的持续时间内实现对所述连杆(1)的长度调节的控制。
6.根据权利要求1至2中任一项所述的长度可调的连杆,其特征在于,依赖于另外的发动机特征数据来实现对所述连杆(1)的长度调节。
7.根据权利要求6所述的长度可调的连杆,其特征在于,所述另外的发动机特征数据是转速、负荷、消耗和速度。
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DE102017107731.6 | 2017-04-10 | ||
DE102017107731.6A DE102017107731A1 (de) | 2017-04-10 | 2017-04-10 | Längenverstellbares Pleuel für einen Kolbenmotor |
PCT/EP2018/000186 WO2018188793A1 (de) | 2017-04-10 | 2018-04-10 | Längenverstellbares pleuel für einen kolbenmotor |
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AT522793B1 (de) * | 2019-10-08 | 2021-02-15 | Avl List Gmbh | Kompakter hydraulischer Ventilmechanismus für eine längenverstellbare Pleuelstange |
AT522570B1 (de) * | 2019-10-08 | 2020-12-15 | Avl List Gmbh | Hydraulischer Ventilmechanismus mit Drosselbohrung |
CN113250819A (zh) * | 2021-06-11 | 2021-08-13 | 刘平 | 一种用直杆活塞七轮传动机构传输动力的装置及其用途 |
Citations (6)
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DE102012020999A1 (de) * | 2012-07-30 | 2014-01-30 | Fev Gmbh | Hydraulischer Freilauf für variable Triebwerksteile |
WO2014162043A1 (en) * | 2013-04-03 | 2014-10-09 | Wärtsilä Finland Oy | Arrangement for setting a compression ratio of an internal combustion piston engine |
CN104279055A (zh) * | 2013-07-05 | 2015-01-14 | 德国海利特有限公司 | 用于两级可变压缩比的连杆 |
WO2015172168A1 (de) * | 2014-05-12 | 2015-11-19 | Imt-C Innovative Motorfahrzeuge Und Technologie - Cooperation Gmbh | Pleuel für eine verbrennungskraftmaschine |
CN205477932U (zh) * | 2016-03-16 | 2016-08-17 | 吉林大学 | 液压驱动式可变压缩比活塞连杆组件 |
WO2016203043A1 (de) * | 2015-06-18 | 2016-12-22 | Avl List Gmbh | Längenverstellbare pleuelstange |
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GB2161580B (en) * | 1984-07-07 | 1987-08-12 | Peter Robert Davis | Variable length connecting rod |
US5255637A (en) * | 1992-04-30 | 1993-10-26 | Ford Motor Company | Internal combustion engine with adaptive control of compression ratio |
AT514071B1 (de) | 2013-10-18 | 2014-10-15 | Avl List Gmbh | Längenverstellbare Pleuelstange |
DE102015203387A1 (de) * | 2015-02-25 | 2016-08-25 | Fev Gmbh | Doppelt wirkender Kolben eines VCR-Motors |
EP3334915B1 (de) * | 2015-08-10 | 2020-06-03 | AVL List GmbH | Hubkolbenmaschine, insbesondere brennkraftmaschine |
DE102016215282A1 (de) * | 2015-08-14 | 2017-02-16 | Avl List Gmbh | Längenverstellbare Pleuelstange |
WO2017102108A1 (de) * | 2015-12-14 | 2017-06-22 | Avl List Gmbh | Längenverstellbare pleuelstange mit elektromagnetisch betätigbarem schaltventil |
CN108603438B (zh) * | 2015-12-14 | 2022-01-25 | Avl 里斯脱有限公司 | 长度可调节的连杆、往复式活塞发动机和车辆 |
-
2017
- 2017-04-10 DE DE102017107731.6A patent/DE102017107731A1/de not_active Withdrawn
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2018
- 2018-04-10 AT ATA50304/2018A patent/AT519805B1/de not_active IP Right Cessation
- 2018-04-10 WO PCT/EP2018/000186 patent/WO2018188793A1/de active Application Filing
- 2018-04-10 CN CN201880024226.1A patent/CN110582625B/zh not_active Expired - Fee Related
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DE102012020999A1 (de) * | 2012-07-30 | 2014-01-30 | Fev Gmbh | Hydraulischer Freilauf für variable Triebwerksteile |
WO2014162043A1 (en) * | 2013-04-03 | 2014-10-09 | Wärtsilä Finland Oy | Arrangement for setting a compression ratio of an internal combustion piston engine |
CN104279055A (zh) * | 2013-07-05 | 2015-01-14 | 德国海利特有限公司 | 用于两级可变压缩比的连杆 |
WO2015172168A1 (de) * | 2014-05-12 | 2015-11-19 | Imt-C Innovative Motorfahrzeuge Und Technologie - Cooperation Gmbh | Pleuel für eine verbrennungskraftmaschine |
WO2016203043A1 (de) * | 2015-06-18 | 2016-12-22 | Avl List Gmbh | Längenverstellbare pleuelstange |
CN205477932U (zh) * | 2016-03-16 | 2016-08-17 | 吉林大学 | 液压驱动式可变压缩比活塞连杆组件 |
Also Published As
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AT519805A3 (de) | 2019-02-15 |
WO2018188793A1 (de) | 2018-10-18 |
AT519805A2 (de) | 2018-10-15 |
AT519805B1 (de) | 2020-02-15 |
CN110582625A (zh) | 2019-12-17 |
DE102017107731A1 (de) | 2018-10-11 |
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