CN115298423A - 气缸盖 - Google Patents
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- F02B19/1004—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements
- F02B19/1014—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements design parameters, e.g. volume, torch passage cross sectional area, length, orientation, or the like
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- F02B19/00—Engines characterised by precombustion chambers
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- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/108—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
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- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
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- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
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- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or the combustion chamber
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- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
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Abstract
本发明涉及一种带有至少一个凹槽(23)的气缸盖(1),该至少一个凹槽(23)用于布置至少一个气体阀(20)和至少一个火花塞(15)。火花塞(15)达到预先腔室(17)中并沿着火花塞旋转轴线(16)布置,而气体阀(20)沿着气体阀旋转轴线(19)布置,其中,气体阀旋转轴线(19)相对于火花塞旋转轴线(16)倾斜,且气体阀旋转轴线(19)和火花塞旋转轴线(16)之间的距离(A)随着在背离燃烧室(2)的方向上距预先腔室(17)的距离的增加而减少。本发明的目的是提供一种改进的气缸盖(1),其实现了改进的组装并且需要的安装空间更少。根据本发明,以如下方式通过前述气缸盖(1)实现此目的,用于火花塞(15)和气体阀(20)的凹槽(23)具有由初级模制工艺、优选地是铸造工艺形成的表面(O),且特别优选地是经过没有机加工的后处理的。
Description
本发明涉及一种气缸盖,其具有至少一个凹槽,用于布置至少一个气体阀(气门)和至少一个火花塞,其中,火花塞延伸到预先腔室中,火花塞沿火花塞旋转轴线布置,而气体阀沿气体阀旋转轴线布置,其中,气体阀旋转轴线相对于火花塞旋转轴线倾斜,并且气体阀旋转轴线与火花塞旋转轴线之间的距离随着在远离燃烧室的方向上与预先腔室的距离增大而减小。
此气缸盖设置为用于带有借助气态燃料燃烧的汽油发动机燃烧的内燃机。例如,可以使用天然气作为燃料。任何其他气态燃料的燃烧也是可能的。这样的气缸盖是已知的,例如,来自CN 109098834 A。其具有在气缸轴线的一侧上的气体阀,而火花塞在气缸轴线跨越的平面的另一侧上与气体阀相对布置。气体阀平行于气缸轴线对齐。为此,火花塞稍微地远离预先腔室向外倾斜。所需的安装空间随着远离预先腔室而急剧增加。各气体交换阀必须进一步向外移动,其引导件通常位于此布置(此结构)周围,因此各气体交换阀具有在阀轴线和气缸轴线之间的更大的距离。
AT 516619 A4中示出了类似的布置。在这种情况下,气体阀和火花塞的旋转轴线是平行设计的,与上文所示的CN 109098834 A相反。在所示的两个实施例之一中,两个(机)加工表面重叠并引入(通入)共用腔。在第二个所示的实施例中,各加工表面彼此间隔开,大大增加了所需的安装空间的大小。
带有互锁、重叠的加工表面的布置(结构)可以节省安装空间,但这会降低用于适配其他部件的所得表面质量。这增加了生产期间的废品量,导致在减少安装空间的同时提高了生产成本。
本发明的目的是提供一种改进的气缸盖,其允许更快的精加工。上述气缸盖根据本发明以如下方式解决该目的,用于火花塞和气体阀(气门)的凹槽具有通过初级成型工艺形成的表面,该工艺优选地是铸造工艺,并且特别优选地是经过没有机加工(不以切削加工的方式)的后处理。
因此,气缸盖中的用于容纳火花塞的腔体的大部分都是通过初级成型工艺形成的。因此,后续的(机)加工更快且更容易。
在这种情况下,各(机)加工表面不重叠,并且所得表面的质量提高,制造工作量降低。在与燃烧室的距离减小的倾斜布置中,节省了安装空间。气体交换阀引导件可以围绕火花塞径直地布置(直接布置在)火花塞周围。
在本发明中,凹槽大部分是铸造的,仅仅用于插入火花塞和气体阀的部分、气体阀接收表面和火花塞接收表面是机加工的。两个机加工表面不重叠。根据本发明的设计具有可以节省安装空间的优点。
如果气体阀旋转轴线和火花塞旋转轴线之间的倾角在0.5°至5°之间,优选地是1.5°,则可以特别好地利用这种效果。
如果火花塞旋转轴线与气缸膛的气缸旋转轴线同心布置,则实现了火花塞相对于由气体阀引入的气态燃料而言特别有利的位置。这允许燃烧尽可能均匀地从居中布置的火花塞开始。因此,可以在很大程度上积极影响点火质量。
如果预先腔室旋转轴线与气缸膛的气缸旋转轴线同心,则可以进一步增强这种效果。
此外,各部件的这种同心布置对所需的安装空间有利。因此,可以减少横向于气缸旋转轴线的单独的部件的膨胀(扩张)。
为了使生产更加高效,气缸盖具有用于气体阀和火花塞的至少一个接收套是有利的,在接收套中形成有凹槽。
用于气体阀和火花塞的此共用凹槽通过铸造形成在单独的部件中。该单独的部件被称为接收套。有利地,凹槽不以任何方式再加工。这节省了生产步骤、成本和时间。
为了实现火花塞的完美紧密适配,有利地规定,从凹槽开始的火花塞接收表面由机械加工的表面形成,优选地由膛形成。
如果从凹槽开始的气体阀接收表面由机械加工的表面形成,优选地由膛形成,则对于气体阀也可以有利地实现这一点。
为了保证接收表面的质量、简化制造并最少化废品,有利的是,火花塞接收表面和气体阀接收表面是间隔开来且不相交的机械加工的表面。
此外,有利的是,用于获得气体阀接收表面和火花塞接收表面的机加工表面不穿透到凹槽中使得各机加工表面没有任何重叠。这可以减少切屑在机加工期间进入相应的其他接收凹槽。
有利的是,设置气体交换阀用于进到燃烧室中的换气(充气交换),并且每个气体交换阀均分配有阀弹簧。这使得这种布置在节省安装空间方面的优势得到了完美的利用。
当接收套沿气缸旋转轴线的方向延伸至阀弹簧所在的高度和/或延伸到阀弹簧所在的高度以上时,而气体交换阀处于关闭位置时,这种效果对于实施例特别明显。
与传统的气缸盖相比,如果在正交于气缸旋转轴线的平面上的接收套和气体交换阀之间的距离较小,则安装空间的节省可以进一步增加,其中直径与距离之间的比率在1.5至3.5之间。
下面参照非限制性附图进一步解释本发明,其中:
图1示出了根据本发明的气缸盖的截面;
图2详细示出了根据本发明的气缸盖的接收套和预先腔室套的类似于图1的截面;以及
图3示出了图2所示的接收套和预先腔室套的另一详图。
图1示出了根据本发明的气缸盖1的截面。在本图中,未更详细示出的、到气缸的燃烧室2的表面被称为防火板3。气体交换通道4延伸到燃烧室2中,并可通过气体交换阀5关闭。为此,各气体交换阀5在引导件(导轨)6中各自是可位移的并承受(抵抗)阀弹簧7的力。
在此截面视图中可见两个气体交换阀5,它们布置在气缸旋转轴线8的两侧并且设计为提升阀。在所示的实施例中,阀弹簧7以第一端部10、沿着气缸旋转轴线8的方向、远离燃烧室2支承在气缸盖1的覆盖表面9上。第二端部11支承抵靠气体交换阀5,第二端部11布置为围绕气体交换阀5背离燃烧室2。
从气缸旋转轴线8径向向两个气体交换阀5内部(在两个气体交换阀径向内部),气缸盖1具有带开口13的壁12,其中,开口13沿着气缸旋转轴线8穿透气缸盖1。在此开口13内布置有接收套14。在接收套14内,火花塞15沿着火花塞旋转轴线16布置。在燃烧室2的方向上,预先腔室17设置为与火花塞15相邻,其至少部分地被预先腔室套18包围。预先腔室17经由未更详细示出的溢流开口连接到燃烧室2。预先腔室17具有预先腔室旋转轴线27,预先腔室17沿着该预先腔室旋转轴线27布置。
在所示的实施例中,预先腔室17与其预先腔室旋转轴线27和火花塞15与其火花塞旋转轴线16同心地和具有气缸旋转轴线8的气缸膛对齐,气缸膛未更详细地示出。
在替代的实施例中,此开口13定位为从气缸旋转轴线8偏离。此外,预先腔室旋转轴线27和火花塞旋转轴线16可以彼此独立地与气缸旋转轴线8间隔开。
接收套14的外径D非常靠近阀弹簧7。接收套14和气体交换阀5之间的距离E对应于约0.4倍的外径D。直径D和距离E之间的关系在这里用比率D/E表示,约为2.4。在传统的实施例中,比率D/E可以在1.5至3.5之间。
这里的距离E在平面ε中给出,该平面ε横向于气缸旋转轴线8,因此形成与气缸旋转轴线8正交的法向轴线。
气体阀旋转轴线19与火花塞旋转轴线16的交点布置在接收套14的外侧,在覆盖表面9的方向上背离燃烧室2。
冷却室和冷却通道布置在接收套14和预先腔室壳体18周围,它们由附图标记K标示。冷却室K还设置在气体交换通道4周围,用于冷却气缸盖1。设置有密封件以保护各个工作液彼此隔离。
气体阀20沿着气体阀旋转轴线19对齐。此气体阀20延伸进气体通道21,气体通道21又将气体阀20流体连接到预先腔室17。
接收套14从防火板3延伸至高度H。在此高度处,阀弹簧7的第一端部10搁靠在轴承表面22上。在所示的实施例中,接收套14在开口13中几乎延伸到覆盖表面9。
接收套14和接受套14内的各元件、以及预先腔室壳体18在图2中放大示出。这里可以清楚地看到,气体阀旋转轴线19倾斜于火花塞旋转轴线16。在所示的实施例中,倾斜角大致为1.5°。在替代的实施例中,倾斜角在0.5°至5°之间。在这种情况下,气体阀20在气缸盖1的覆盖表面9的方向上向着火花塞15倾斜。
这里,火花塞15布置为与具有气缸旋转轴线8的气缸膛和预先腔室17同心。
接收套14具有在其内部中的凹槽23。此凹槽23通过铸造接收套14形成,一起用于气体阀20和火花塞15。凹槽23的表面O未被机加工。
气体阀20和火花塞15两者都从燃烧室2延伸进凹槽23。
气体阀接收表面24设置为用于在接受套14中容纳和固定气体阀20。气体阀接收表面24通过沿着机加工表面25进行机加工来形成,用于气体阀20。
类似的,火花塞接收表面26位于接收套14中,用于容纳和固定火花塞15。此火花塞接收表面26又通过沿着第二机加工表面25进行机加工来形成,用于火花塞15。
例如,此气体阀接收表面24和火花塞接收表面26是圆柱形的。
在所示的实施例中,火花塞15和气体阀20各自布设在膛中。
优选地,预先腔室套18通过未详细示出的连接方式连接到接收套14。
用于气体阀20和用于火花塞15的各机加工表面25在图2和图3中用虚线表示。
各机加工表面25在接收套14内不重叠,并且在接收套14内总是间隔开。
图3示出了图2所示的接收套14和预先腔室套18的另一放大详图。
Claims (12)
1.一种气缸盖(1),所述气缸盖(1)具有至少一个凹槽(23),所述至少一个凹槽(23)用于布置至少一个气体阀(20)和至少一个火花塞(15),其中,所述火花塞(15)延伸到预先腔室(17)中,所述火花塞(15)沿着火花塞旋转轴线(16)布置,而所述气体阀(20)沿着气体阀旋转轴线(19)布置,其中,所述气体阀旋转轴线(19)相对于所述火花塞旋转轴线(16)倾斜,且所述气体阀旋转轴线(19)和所述火花塞旋转轴线(16)之间的距离(A)随着在背离燃烧室(2)的方向上离所述预先腔室(17)的距离的增加而减少,其特征在于,给所述火花塞(15)和所述气体阀(20)的所述凹槽(23)具有表面(O),所述表面(O)由初级模制工艺、优选地是铸造工艺形成,特别优选地是经过没有机加工的后处理的。
3.根据权利要求1或2所述的气缸盖(1),其特征在于,所述火花塞旋转轴线(16)与气缸膛的气缸旋转轴线(8)同心布置。
4.根据权利要求1到3中任一项所述的气缸盖(1),其特征在于,预先腔室旋转轴线(27)与所述气缸膛的所述气缸旋转轴线(8)同心布置。
5.根据权利要求1到4中任一项所述的气缸盖(1),其特征在于,所述气缸盖(1)具有用于所述气体阀(20)和所述火花塞(15)的至少一个接收套(14),所述凹槽(23)形成于所述接收套(14)中。
6.根据权利要求1到5中任一项所述的气缸盖(1),其特征在于,从所述凹槽(23)开始,通过机械加工的表面、优选地通过膛形成火花塞接收表面(26)。
7.根据权利要求1到6中任一项所述的气缸盖(1),其特征在于,从所述凹槽(23)开始,通过膛形成气体阀接收表面(24)。
8.根据权利要求6或7中任一项所述的气缸盖(1),其特征在于,火花塞接收表面(26)和气体阀接收表面(24)是分隔开且不相交的机械加工的表面。
9.根据权利要求6到9中任一项所述的气缸盖(1),其特征在于,用于在所述凹槽(23)中获得所述气体阀接收表面(24)和所述火花塞接收表面(26)的多个机加工表面(25)不穿透,使得各所述机加工表面(25)不重叠。
10.根据权利要求1到9中任一项所述的气缸盖(1),其特征在于,气体交换阀(5)设置为用于进到所述燃烧室(2)中的换气,其中,每个所述气体交换阀(5)均分配有阀弹簧(7)。
11.根据权利要求10所述的气缸盖(1),其特征在于,所述接收套(14)在所述气缸旋转轴线(8)的方向上延伸到一高度(H)和/或延伸超过所述高度(H),所述阀弹簧(7)布置在所述高度(H),其中,所述气体交换阀(7)处于关闭位置。
12.根据权利要求10或11所述的气缸盖(1),其特征在于,所述接收套(14)和所述气体交换阀(5)之间的在正交于所述气缸旋转轴线(8)的平面(ε)中的距离(E)是小的,其中,直径(D)和所述距离(E)之间的比率(D/E)在1.5至3.5之间。
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US12049843B2 (en) | 2024-07-30 |
US20230112789A1 (en) | 2023-04-13 |
AT523273A4 (de) | 2021-07-15 |
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CN115298423B (zh) | 2024-02-06 |
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