CN106014695A - 预燃室气门 - Google Patents

预燃室气门 Download PDF

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CN106014695A
CN106014695A CN201610305035.5A CN201610305035A CN106014695A CN 106014695 A CN106014695 A CN 106014695A CN 201610305035 A CN201610305035 A CN 201610305035A CN 106014695 A CN106014695 A CN 106014695A
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valve
prechamber
chamber
prechamber valve
valve body
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R·雅各布
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Innio Jenbacher GmbH and Co OG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/12—Engines characterised by precombustion chambers with positive ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/026—Lift valves, i.e. stem operated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/026—Lift valves, i.e. stem operated valves
    • F02M21/0269—Outwardly opening valves, e.g. poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/12—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
    • F16K1/126—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
    • F16K15/028—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open the valve member consisting only of a predominantly disc-shaped flat element
    • 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
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • 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
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    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Lift Valve (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

本发明涉及一种预燃室气门(5)，包括一个阀体(24)、至少一个阀门弹簧(15)和至少一个阀针(14)，其中，阀体(24)具有在运行状态中被加载燃气的下部腔(21)和其中设置有阀门弹簧(15)的上部腔(22)，其中，所述上部腔(22)经由压合的塞子(17)封闭。

Description

预燃室气门
技术领域
本发明涉及一种具有权利要求1前序部分特征的预燃室气门以及用于制造这种预燃室气门的方法.
背景技术
(燃气)内燃机从一个确定的孔(约150mm)起配备有用于点火放大的预燃室.伸入到预燃室中的点火源点燃在那里存在的在清洗过的预燃室中含油脂相对多的混合物，由此，点火火舌由预燃室进入到主燃烧室并且点燃在那里存在的混合物.
为了预燃室的燃料供应，存在不同的设计.在未经清洗的预燃室中，混合物在压缩冲程中被从主燃烧室压到预燃室中。
在清洗过的预燃室中此外存在的可能性是：为预燃室额外地供应燃料.这种单独的燃料供应经由预燃室气门实现。该预燃室气门可以直接设置在汽缸盖上或设置在火花塞套中.
这种类型的EP0480545(洋马柴油发动机公司)示出一种预燃室气门，该预燃室气门经由通道(18)被供应燃料气体.这种结构包括多个同心的套筒状部件，这些组件相互插接.部分地经由套筒状部件的壁中的深孔来完成燃气引导.
JPH04171256A和WO2004/099584A1示出一种阀，该阀具有阀体、阀门弹簧、阀针和被加载燃气的下部腔.同样地存在上部腔，在该上部腔中设置有阀门弹簧.在此，一个罩用作上部阀腔的封盖，该罩套到并且旋拧到所述上部阀腔上，并且由此才构成所述上部阀腔.
在US2667155A中描述了一种预燃室气门，该预燃室气门拥有两件式的阀体、阀门弹簧以及阀针。下部阀腔由气体加载，并且弹簧安置在上部阀腔中.该上部阀腔利用塞子通过以下方式封闭，即，该塞子旋拧在阀体中。整个阀在此通过独立的构件夹紧并且由此紧固在汽缸盖上.
发明内容
本发明的目的在于：提供一种相对现有技术改进的预燃室气门或者用于制造预燃室气门的方法.
所述目的通过具有权利要求1特征的预燃室气门或者根据权利要求9或10所述的用于制造的方法得以实现.有益的实施方式在从属权利要求中给出。
根据本发明设定：构造在阀体中的、其中设置有阀门弹簧的腔经由压合的塞子封闭.这显示处相对现有技术的实质性的结构改进.由现有技术已知的预燃室气门经由套筒封闭，这要求对用于定心的平台的繁复的制造.
可以设定：为了将阀针相对阀座夹紧而设置有罩，该罩可插入到预燃室气门的阀体中，并且该罩与阀针相连.
优选可以设定：在预燃室气门的打开状态中，罩在止挡上贴靠在阀体上.这带来特别的优点：阀针的运动具有明确限定的终端位置.所述止挡优选如下地构造，即，预燃室气门的上部腔具有至少两个具有不同直径的区段，其中，罩在具有较大直径的区段中可运动并且在到达预燃室气门的打开位置的情况下处在具有较大直径的区段与具有较小直径的区段之间.在具有较小直径的区段中有益地安置阀门弹簧.该阀门弹簧这样在具有较小直径的区段中获得引导。
此外由此保障特别紧凑的构造和良好的可制造性.
为了各部件(优选至少壳体)的耐久性，这些部件可以硬化.如果壳体两件式地构造，所述硬化使得焊接变得困难.任何其它结合技术在空间技术上都是困难的。连接必须密封且牢固.因此，壳体的一体式设计是优选的.
优先可以设定：阀体一件式地构造。这种变型是特别有益的，因为这样构造的预燃室阀体特别坚固.在制造时还省略繁复的装配步骤.
可以设定：阀针的引导通过阀体完成，该阀体同时还构成预燃室气门的壳体.这样实现特别有益的构件整合.阀体因此承担多个功能.
可以设定：在预燃室气门的阀盘座与预燃室气门通入到预燃室中的入口之间或者在预燃室气门的阀盘座与该预燃室气门通入到通道中的入口之间设置有腔。
优选设定：所述腔具有最大程度梨形的并且向着预燃室变细的造型.
还请求保护用于制造预燃室气门的方法.
因此设定：为了封闭上部腔，借助压合座将塞子与阀体相连.
替换地或附加地设定：将阀门弹簧相对阀座夹紧的罩经由射束焊接而与预燃室气门的阀针相连.
附图说明
通过附图来进一步阐述本发明.附图中：
图1a至1c 火花塞套
图2a至2c 火花塞套
图3a至3c 火花塞套
图4a至4e 供气设计的细节
图5a、5b 预燃室气门及其变型
具体实施方式
图1a至1c示出按照第一个实例的火花塞套4的三个视图.火花塞套4在安装状态中插入到汽缸盖2中。
图1a示出腔体7的纵剖视图，该腔体容纳火花塞6(未示出)和预燃室气门5.所述腔体7在这个实例中构造在火花塞套4中.
腔体7一方面包括围绕对称轴线S1的同心的竖井，该竖井包括多个柱段并且用于容纳火花塞6。
腔体7此外具有孔10，该孔具有对称轴线S2，所述孔用于容纳预燃室气门5.
通道8从预燃室气门5通向预燃室3.预燃室3一方面包括本身的腔体、即所谓的空腔，在该空腔中发生混合物的点火.预燃室3当然也是一个物理构件。在本实施方式中，预燃室3设计为相对火花塞套4独立的构件并且与火花塞套4连接、例如压合.
为了清楚性而未示出的火花塞6经由与对称轴线S1同心的井筒插入到火花塞套4中，使得该火花塞与预燃室3平齐而该火花塞的电极伸入到预燃室3中.预燃室3经由通道8而由预燃室气门5积聚燃气.在预燃室3中的点火之后，点燃的混合物经由溢流孔9到达主燃烧室(未示出)中.
图1b示出图1a的俯视图.可以看到的是：处于腔体7中的用于容纳火花塞6以及预燃室气门5的平行的柱形井筒。火花塞6如参照图1a所示的那样未示出.在预燃室气门5处可以看到的是八角形，预燃室气门5以该八角形拧入到火花塞套4中.在当前实例中存在腔体7的最大的孔径D1，该孔径在俯视图中外切用于容纳火花塞6和预燃室气门5的孔.换而言之，在这个实例中存在一个用于火花塞6和预燃室气门5的共同的井筒.
所述直径为D1的最大孔的中心线位于对称轴线S1与S2之间.所述共同的井筒在火花塞6和预燃室气门5的装配方面具有优点，但由于仅仍剩余小的壁厚，所以对火花塞套4有所削弱.
图1c示出这个实例的火花塞套的透视图。
图2a至2c示出根据另一实例的火花塞套4的不同视图。
在根据图1a至1c的实例中，腔体7具有柱形的区段，该区段在其最大直径中既外切用于容纳火花塞的孔又外切用于容纳预燃室气门5的孔，而在本实例中，腔体7的最大直径不再完全包围火花塞套4的孔.更确切地说，预燃室气门5的孔10在火花塞孔11的具有最大直径的上部区段中穿过该火花塞孔.这在图2b和2c中特别清楚.在俯视图(图2b)中，用于容纳预燃室气门5的孔10和用于容纳火花塞6的孔交叠。
图3a至图3c示出另一实例.用于容纳预燃室气门5的孔在此同样不被腔体7的最大直径外切.换而言之，这里用于容纳火花塞6和用于容纳预燃室气门5的孔在此也穿过彼此.相比于图2a至2c所述的实例，腔体7的轮廓发生变化.腔体7的轮廓在此如下的设计，使得用于容纳火花塞6和预燃室气门5的各孔流畅地相互融入.换而言之，按照图2a至2c的尖锐的过渡部在此通过两个孔过渡部的平滑的半径代替.
图4a示出火花塞套的剖视图，该剖视图如下地显示，使得向预燃室气门5的燃气输送变得明显。该阶梯剖在图4b中示出.可以看到供气通道12，该供气通道如何通到支承预燃室气门5的孔中.孔10与预燃室气门共同构成环形通道13，供气通道12通到该环形通道中.流入的燃气从由孔10和预燃室气门5构成的环形通道13被均匀地引导到预燃室气门5中.
图4c示出火花塞套4的纵剖视图。这个阶梯剖由图4d获知.如在图4c中可以看到的那样，此处如下地选择阶梯剖，使得可以看到供气通道12的与对称轴线S1平行延伸的部分.
图4e示出预燃室气门5和其气体供给的等轴透视图.气体供给通过供气通道12的水平和竖直区段进行.
图5a示出预燃室气门5的剖视图.可以清楚看到的是环形通道13，该环形通道构成在腔体的壁10与预燃室气门5的外轮廓之间.所述壁10可以由汽缸盖2自身构成，或者可以由插入到汽缸盖2中的火花塞套4构成.
阀针14由弹簧15相对其支座夹紧.罩16围绕弹簧15并且与阀针14相连.该连接优选可以经由射束焊接来进行.
在本实施例中特别优选的情况示出，在预燃室气门5的打开状态中，罩16在止挡上贴靠在阀体24上.这带来特别的优点，即，阀针14的运动具有明确限定的终端位置.预燃室气门5的上部腔22为此划分为两个直径不同的柱形区段.在本图右侧、即向着塞子17的方向，罩17沿着预燃室气门5的纵轴线的方向可运动.当预燃室气门5到达打开位置时，罩17以在较大直径的区段与较小直径的区段之间的在腔22中构成的凸肩处于止挡上.在腔22的具有较小直径的区段中安置有阀门弹簧15。
塞子17封闭腔22并且向上密封预燃室气门5.在此借助压合座将塞子17与阀体24连接.阀体24作为一个整体从汽缸盖2的阀座延伸直到阀座的(预燃室气门的)背向的端部.
直接在阀座之前构造有另一腔21.该腔21由从环形间隙13出发的通道20被供应燃气.
在预燃室气门5的阀盘座与该预燃室气门5的通入到预燃室3中的入口之间或者在该预燃室气门5的阀盘座与该预燃室气门5通入到通道8中的入口之间具有另一腔23.在本图中腔23柱形构造，然而该腔也可以具有其它形式.例如也可以构造成梨形.
环形通道13在径向上经由O型环18相对于腔体7密封.这些O型环设置在由凸起19构成的环形容纳部中.此处示出的预燃室气门5的密封设计设定：在径向上、即在预燃室气门5的外表面上进行密封.
凸起19的朝向环形通道13的侧面限定环形通道13.凸起19一方面实现了为密封件、在此作为O型环提供容纳部的功能，另一方面凸起19限定环形通道13。
图5b示出图5a的变型，在该变型中，腔23具有最大程度梨形的、向着预燃室3变细的造型.这种造型在流动技术上是特别有益的。
附图标记列表
1 内燃机
2 汽缸盖
3 预燃室
4 火花塞套
5 预燃室气门
6 火花塞
7 腔体
8 通道
9 溢流孔
10 腔体7的壁
11 火花塞孔
12 供气通道
13 环形通道
14 阀针
15 阀门弹簧
16 罩
17 塞子
18 O型环
19 凸起
20 气体通道
21 预燃室气门的下部腔
22 预燃室气门的上部腔
23 腔
24 阀体
S1 对称轴线
S2 对称轴线

Claims (11)

1.预燃室气门(5)，包括一个阀体(24)、至少一个阀门弹簧(15)和至少一个阀针(14)，其中，阀体(24)具有在运行状态中被加载燃气的下部腔(21)和其中设置有阀门弹簧(15)的上部腔(22)，其特征在于，所述上部腔(22)经由压合的塞子(17)封闭。
2.根据权利要求1所述的预燃室气门(5)，其特征在于，阀体(24)构造成从汽缸盖(2)中的阀座直到该阀座的预燃室气门(5)的背向的端部的一个整体。
3.根据权利要求1或2所述的预燃室气门(5)，其特征在于，为了将阀针(14)相对阀座夹紧而设置有罩(16)，该罩能插入到预燃室气门(5)的阀体(24)中，并且该罩与阀针(14)相连。
4.根据权利要求3所述的预燃室气门(5)，其特征在于，在预燃室气门(5)的打开状态中，罩(16)在止挡上贴靠在阀体(24)上。
5.根据上述权利要求中至少一项所述的预燃室气门(5)，其特征在于，阀体(24)一体式构造。
6.根据权利要求5所述的预燃室气门(5)，其特征在于，通过阀体(24)自身实现阀针(14)的引导，该阀体同时还构成预燃室气门(5)的壳体。
7.根据上述权利要求中至少一项所述的预燃室气门(5)，其特征在于，在预燃室气门(5)的阀盘座与该预燃室气门(5)通入到预燃室(3)中的入口之间或者在预燃室气门(5)的阀盘座与该预燃室气门(5)通入到通道(8)中的入口之间设置有腔(23)。
8.根据权利要求7所述的预燃室气门(5)，其特征在于，所述腔(23)具有最大程度梨形的并且向着预燃室(3)的方向变细的造型。
9.根据上述权利要求中至少一项所述的预燃室气门(5)，其特征在于，预燃室气门(5)在其外轮廓上具有至少一个凸起(19)，该凸起的朝向环形通道(13)的侧面限定该环形通道(13)，并且在该凸起的其它侧面上贴靠有密封件，该密封件用于将预燃室气门(5)相对容纳该预燃室气门(5)的腔体(7)的壁(10)密封。
10.用于制造预燃室气门(5)、优选用于制造根据上述权利要求中至少一项所述的预燃室气门(5)的方法，该预燃室气门包括一个阀体(24)，该阀体(24)具有在运行状态中被加载燃气的下部腔(21)和其中设置有阀门弹簧(15)的上部腔(22)，其特征在于，为了封闭上部腔(22)，借助压合连接或螺纹连接将塞子(17)与阀体(24)相连。
11.用于制造预燃室气门(5)、优选用于制造根据权利要求1至8中至少一项所述的预燃室气门(5)的方法，该预燃室气门包括阀门弹簧(15)，该阀门弹簧用于将阀针(14)相对阀座夹紧，其特征在于，将阀门弹簧(15)相对阀座夹紧的罩(16)经由射束焊接而与预燃室气门(5)的阀针(14)相连。
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