CN1462338A - 燃料喷射阀 - Google Patents
燃料喷射阀 Download PDFInfo
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- CN1462338A CN1462338A CN02801584A CN02801584A CN1462338A CN 1462338 A CN1462338 A CN 1462338A CN 02801584 A CN02801584 A CN 02801584A CN 02801584 A CN02801584 A CN 02801584A CN 1462338 A CN1462338 A CN 1462338A
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- 238000002347 injection Methods 0.000 title abstract description 8
- 239000007924 injection Substances 0.000 title abstract description 8
- 238000013016 damping Methods 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 241001672694 Citrus reticulata Species 0.000 claims description 12
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- 239000007921 spray Substances 0.000 description 1
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- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
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- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
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- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/903—Glass
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- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9053—Metals
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- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
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- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0667—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature acting as a valve or having a short valve body attached thereto
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- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
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- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
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- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/166—Selection of particular materials
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- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
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- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
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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
- 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
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- Y10S239/00—Fluid sprinkling, spraying, and diffusing
- Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
燃料喷射阀(1)具有一个电磁线圈(10),该电磁线圈与一个被复位弹簧(23)加载的衔铁(20)配合作用,该衔铁与一个阀针(3)一起构成一个可轴向运动的阀件。在阀针(3)上设置一个阀关闭体(4),该阀关闭体与一个阀座体(5)形成一个密封座。在燃料喷射阀(1)的一个被燃料流过的凹部(36)内安置至少一个减振元件(37)。
Description
技术水平
本发明涉及一种按照独立权利要求所述类型的燃料喷射阀。
例如从DE 19626576 A1中知道了一种可电磁操作的燃料喷射阀,在这种喷射阀中,为了进行电磁操作,一个衔铁与一个可用电激励的电磁线圈共同作用,衔铁行程通过一个阀针传递到阀关闭体上,阀关闭体与一个阀座面共同作用形成一个密封座。在衔铁中设置了多个燃料通道。衔铁的复位借助一个复位弹簧进行。
在由DE 19626576 A1中知道的燃料喷射阀中缺点特别是,主要由燃料喷射阀周期性打开和关闭引起的压力脉动被未经减振地传递到燃料喷射系统的其他件上,例如传递到燃料分配管道上,并且由此引起共振,该共振导致在燃料喷射阀运行中产生干扰噪声。
由于共振,还存在因振动造成构件之间连接松开的可能性,这导致燃料喷射装置、或者甚至内燃机的功能故障,这大大影响工作的安全性。
本发明优点
相比而言,具有独立权利要求所述特征的本发明燃料喷射阀的优点是,安置在燃料喷射阀的一个凹部(Ausnehmung)内的至少一个减振元件将由阀针运动引起的压力脉动这样衰减,使得燃料分配管道内不发生共振并且噪声产生被降低。
通过在从属权利要求中提出的措施可以有利地扩展在独立权利要求中给出的燃料喷射阀。
有利的特别是,以一个隔板的形式构成的减振元件安置在一个过滤元件的出流侧,使得被燃料随带的杂质可以被过滤出去并且不会堵塞隔板的孔。
此外有利的是,带孔的隔板可以以简单的形式制成并且在装配燃料喷射阀时可以容易地被装入凹部内。
在燃料喷射阀具有较长结构长度的情况下,可以有利地使用多个减振元件,它们可以例如通过不同的轴向长度改善减振特性。
在使用多个减振元件的情况下,孔可以较大,因为通过构件的较大长度可以使减振作用加强。通过此,减振元件也可以安置在过滤元件的入流侧,这可以使得装配更简单或者也可以补充装备在已经处于运行中的燃料喷射阀上。
使用一个类似节流的减振元件是有利的,因为通过弹性元件和嵌件在减振元件内的相互嵌套可以通过抑制共振实现很有效的减振。
附图
附图中简化示出本发明的实施例并且在下面的说明中详细解释。图中示出:
图1一个按照本发明构造的燃料喷射阀的第一实施例的示意剖视图,
图2一个按照本发明构造的燃料喷射阀的第二实施例的示意剖视图,
图3一个按照本发明构造的燃料喷射阀的第三实施例在图2中区域III内的局部剖面图。
实施例说明
图1以一个局部剖视图示出本发明燃料喷射阀1的一个第一实施例。该燃料喷射阀1以一个用于混合气压缩、强迫点火式内燃机的燃料喷射装置中的燃料喷射阀1的形式实施。该燃料喷射阀1适合用于将燃料直接喷射到一个未示出的内燃机燃烧室中。
燃料喷射阀1包括一个喷嘴体2,在该喷嘴体内安置了一个阀针3。阀针3与一个阀关闭体4作用连接,该阀关闭体4与安置在一个阀座体5上的一个阀座面6配合作用形成一个密封座。在本实施例中,燃料喷射阀1涉及一个向内打开的燃料喷射阀1,该燃料喷射阀具有一个喷射孔7。
喷嘴体2通过一个密封件8被相对于一个电磁线圈10的外极9密封。电磁线圈10被罩在一个线圈壳体11内并卷绕在一个线圈架12上,该线圈架贴靠在电磁线圈10的一个内极13上。内极13与外极9通过一个间隙26相互分开并且支承在一个连接构件29上。电磁线圈10通过一个导线19被一个可通过一个电插接接头17导入的电流激励。插接接头17被一个塑料包套18包围,该塑料包套18可以被注塑在内极13上。
阀针3在一个盘状构成的阀针导向件14中被导向。一个匹配成对的调整盘15用于调整行程。一个衔铁20位于调整盘15的另一侧。衔铁20通过一个第一法兰21与阀针3构成传力链地(kraftschluessig)连接,阀针3通过一个焊缝22与该第一法兰21连接。一个复位弹簧23支承在第一法兰21上,在燃料喷射阀1的这种实施形式中,复位弹簧23通过一个套筒24被预紧。
在衔铁20的出流侧安置了一个第二法兰31,该法兰用作下侧衔铁限位件。该法兰通过一个焊缝33构成传力链地与阀针3连接。在衔铁20与第二法兰31之间安置了一个弹性的中间环32用于在燃料喷射阀1关闭时缓冲衔铁的碰撞。
燃料通道30a至30c在阀针导向件14中、在衔铁20中和阀座体5上延伸。这些燃料通道将通过一个中央燃料输入口16输入并通过一个过滤元件25过滤的燃料引导向喷射孔7。燃料喷射阀1通过一个密封件28被相对于未示出的分配管道密封。
在燃料喷射阀1处于静止状态中时,阀针3上的第一法兰21被复位弹簧23逆着其行程方向这样加载,使得阀关闭体4保持密封地贴靠在阀座6上。衔铁20支承在中间环32上,中间环32支承在第二法兰31上。在电磁线圈10被激励时,它建立一个磁场,该磁场使衔铁20逆着复位弹簧23的弹簧力向行程方向运动。在此,衔铁20带动与阀针3焊接的第一法兰21并且从而同样带动阀针3沿行程方向一起运动。与阀针3处于作用连接中的阀关闭体4从阀座面6上抬起,由此,通过燃料通道30a至30c引导向喷射孔7的燃料被喷射出。
如果关断线圈电流,在磁场充分衰减后,由于复位弹簧23作用在第一法兰21上的压力,衔铁20从内极13上落下,由此,阀针3逆着行程方向运动。因此,阀关闭体4落到阀座面6上,燃料喷射阀1被关闭。衔铁20落到由第二法兰31形成的衔铁限位件上。
按照本发明,在内极13的一个凹部36内安置一个隔板34,该隔板设置有孔35。在这里,隔板34安置在过滤元件25与过滤元件25下游侧的调整套筒24之间,通过此抑制了流过过滤元件25并接着流过隔板34的燃料中的杂质,隔板34的孔35因而不会被堵塞。
通过隔板34可以切断在燃料喷射阀1运行期间产生的压力脉动,该压力脉动例如由燃料喷射阀1的周期性打开和关闭引起并且会由于特别是在没有继续示出的燃料分配管道中的共振导致产生噪声的后果。通过压力脉动的衰减也可以抑制各个构件之间的插接连接由于被激发的振动而松开。
在第一实施例中,隔板34作为单独的构件制成并且最好被压入内极13的凹部内。但也可以将隔板34例如作为与调整套筒24或过滤元件25的组合构件构成。
在这里,隔板34的孔35这样确定尺寸,使得压力脉动被有效衰减,但经过燃料喷射阀1的燃料流不被节流。压力脉动的衰减越强,燃料分配管道中的共振和由此引起的噪声就越小。
在这里,用于制造隔板34的材料的选择特别是由其相对于燃料溶剂质量的稳定性来决定。金属和金属合金由于材料的可锻性允许通过压入将隔板34简单地装到内极的凹部36内,除了它们之外,也可以设想使用弹簧钢套筒或聚四氟乙烯环以及弹性体、各种不同弹性体的组合及弹性体与金属的组合。弹性体可以用织物加强或者加入填料如玻璃纤维、玻璃球、岩石粉或金属粉末。
图2以一个局部示意剖视图示出按照本发明构造的燃料喷射阀1的第二实施例的一个纵剖面,该燃料喷射阀特别适合用于将燃料喷射到未详细示出的内燃机进气管内。在这里,在图1和图2中相同的构件使用相同的参考标号。
燃料喷射阀1包括一个电磁线圈10,该电磁线圈卷绕在一个线圈架12上。线圈架12被罩在一个阀壳体40中并通过一个盖41封闭。
线圈架12被一个阀套43穿过,该阀套呈管状构造并且包围一个涨紧在其内或者焊接在其内的支撑管44,该支撑管起到电磁线圈10的内极的作用。可以例如用阀壳体40作为电磁线圈10的外极。在支撑管44的出流侧安置了一个衔铁20,该衔铁与一个阀针3一体式构成。在阀针3内设置了多个通流孔45,这些通流孔将流过燃料喷射阀1的燃料引导向一个密封座。
在通流孔45的区域内安置了一个用于过滤燃料的环形过滤器46。阀针3最好通过焊接与一个在本实施例中呈球状的阀关闭体4处于作用连接中,该阀关闭体与一个阀座体5构成一个密封座。在密封座下游,在一个喷射孔板47中构成至少一个喷射孔7,燃料从该喷射孔被喷入未继续示出的进气管内。
在燃料喷射阀1处于静止状态中时,衔铁20被一个复位弹簧23这样加载,使得燃料喷射阀1由于阀关闭体4被压紧到阀座体5上而保持关闭。复位弹簧23安置在衔铁20或者支撑管44的一个凹部48内,并且通过一个调整套筒24被预紧。在调整套筒24的入流侧,一个钵状的过滤元件25被压入阀套43内。通过中心燃料输入口16输入的燃料经过凹部48和通流孔45流向密封座和喷射孔7,流过燃料喷射阀1。
一个管状的金属空心体50插入阀套43的入流侧端部49内并且例如在过滤元件25的区域内与阀套43焊接。为了安装到未示出的燃料分配管道上,燃料喷射阀1在金属空心体50的入流侧端部51上设置有一个密封件28。另一个密封件52密封燃料喷射阀1与进气管之间的未继续示出的连接。电磁线圈10通过导线19被一个可通过电插接接头17输入的电流激励。插接接头17被一个塑料外罩18包围,该塑料外罩可以被注塑到阀套43上或者空心体50上。
如果电磁线圈10通过一个未继续示出的电线输入电流,则建立一个磁场,在强度足够时,该磁场克服复位弹簧23的力逆着燃料流动方向将衔铁20吸入电磁线圈10中。由此使衔铁20与支撑管44之间构成的工作间隙27闭合。通过衔铁20的运动,与衔铁20一体式构成的阀针3也被沿行程方向一起带动,使得阀关闭体4从阀座体5上抬起并且燃料被引导向喷射孔7。
一旦激励电磁线圈10的电流被切断并且磁场衰减这样多,使得复位弹簧23将衔铁20压离支撑管44,阀针3向出流方向运动并且阀关闭体4落到阀座体5上,则燃料喷射阀1关闭。
按照本发明,在金属空心体50内安置至少一个减振元件37。在本实施例中,为了提高减振特性设置了两个减振元件37a和37b。减振元件37a和37b与在图1所示第一实施例中介绍的隔板34履行一样的功能,它们衰减主要由燃料喷射阀1的打开和关闭以及随后产生的燃料分配系统不同件内的共振的引起的压力脉动。
由于燃料喷射阀1具有较大的结构长度因而可以提供位置,减振元件37a和37b具有较大的轴向结构长度,由此,减振元件37a和37b的一个凹部38的尺寸可以确定得大于图1中所示的孔35,减振作用不会被削弱。
为了避免在燃料流中产生旋流,减振元件37a和37b的形状可以变化。例如凹部38可以具有在减振元件37a和37b轴向长度上变化的直径,该凹部可以在入流区域中倒角或者在内壁上具有用于改善流动的结构。减振元件37a和37b的轴向间距X同样可以可变化地构成。
图3以一个局部剖视图示出本发明减振元件37的一个第三实施例,该减振元件例如可以插入燃料喷射阀1的金属空心体50内,该金属空心体在对图2的说明中已经详细说明过。
在这里,减振元件37在其凹部38内具有至少一个、最好多个弹性元件56,它们与减振元件37的一个入流侧端部55连接。这些弹性元件沿燃料流动方向延伸到凹部38内直至进入一个钵状的嵌件57内,该嵌件在减振元件37的出流侧端部58上安置在凹部38内并且在至少一个位置上与减振元件37连接。
钵状嵌件57朝向减振元件37的入流侧端部55敞开并且在嵌件57的壁60上具有至少一个、最好多个通流孔59。
流过燃料喷射阀1的燃料通过入流侧端部55进入减振元件37并且通过凹部38的一个由弹性元件56构成的收缩部被稍微节流。在这里,弹性元件56被燃料径向向外压。燃料继续流入钵状的嵌件57内,该嵌件向入流方向敞开。然后,燃料首先通过嵌件57的壁60中的通流孔59离开嵌件57,最后离开减振元件37。在这里,用箭头表示出燃料通过减振元件37的可能路径。
通过在图3中描述的减振元件37达到的减振是很有效的,因为通过嵌件57在减振元件37内和弹性元件56在嵌件57内的相互嵌套使得振动不会向燃料输入口16的方向蔓延,通过此,可以特别强地降低噪声。
本发明不局限于所示出的实施例,例如也可用于混合气压缩、自点火的内燃机中用的燃料喷射阀1。
Claims (13)
1.燃料喷射阀(1),具有一个电磁线圈(10),该电磁线圈与一个被复位弹簧(23)加载的衔铁(20)配合作用,该衔铁与一个阀针(3)一起构成一个可轴向运动的阀件,其中,在阀针(3)上设置一个阀关闭体(4),该阀关闭体与一个阀座体(5)形成一个密封座,其特征为,在燃料喷射阀(1)的一个被燃料流过的凹部(36)内安置至少一个减振元件(37)。
2.按照权利要求1所述的燃料喷射阀,其特征为,该至少一个减振元件(37)以一个隔板(34)的形式构成,该隔板具有一个孔(35)。
3.按照权利要求1或2所述的燃料喷射阀,其特征为,该至少一个减振元件(37)安置在一个过滤元件(25)与一个用于预紧复位弹簧(23)的调整套筒(24)之间。
4.按照权利要求2所述的燃料喷射阀,其特征为,隔板(34)的孔(35)这样确定尺寸,使得流过燃料喷射阀(1)的燃料流不被节流。
5.按照权利要求1或2所述的燃料喷射阀,其特征为,该至少一个减振元件(37)安置一个在入流侧将燃料喷射阀(1)加长的金属空心体(50)内。
6.按照权利要求5所述的燃料喷射阀,其特征为,设置两个减振元件(37a,37b)。
7.按照权利要求6所述的燃料喷射阀,其特征为,这些减振元件(37a,37b)安置在一个过滤元件(25)的入流侧。
8.按照权利要求6或7所述的燃料喷射阀,其特征为,这些减振元件(37a,37b)的轴向长度不相同。
9.按照权利要求6至8之一所述的燃料喷射阀,其特征为,这些减振元件(37a,37b)之间的轴向间距(x)是可变化的。
10.按照权利要求1所述的燃料喷射阀,其特征为,该至少一个减振元件(37)在一个入流侧端部(55)上具有至少一个弹性元件(56),该弹性元件沿燃料流动方向延伸到减振元件(37)的一个凹部(38)内。
11.按照权利要求10所述的燃料喷射阀,其特征为,该至少一个弹性元件(56)延伸到一个钵状的嵌件(57)内,该嵌件安置在减振元件(37)的出流侧端部(58)上,其中,嵌件(57)朝向减振元件(37)的入流侧端部(55)敞开。
12.按照权利要求11所述的燃料喷射阀,其特征为,该钵状嵌件(57)在嵌件(57)的壁(60)内具有至少一个通流孔(59)。
13.按照权利要求11或12所述的燃料喷射阀,其特征为,钵状嵌件(57)与减振元件(37)连接。
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DE10122353A DE10122353B4 (de) | 2001-05-09 | 2001-05-09 | Brennstoffeinspritzventil |
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EP (1) | EP1387942B1 (zh) |
JP (1) | JP4181418B2 (zh) |
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- 2002-04-23 CZ CZ200337A patent/CZ200337A3/cs unknown
- 2002-04-23 DE DE50206024T patent/DE50206024D1/de not_active Expired - Lifetime
- 2002-04-23 JP JP2002587794A patent/JP4181418B2/ja not_active Expired - Fee Related
- 2002-04-23 CN CN02801584A patent/CN1462338A/zh active Pending
- 2002-04-23 EP EP02740281A patent/EP1387942B1/de not_active Expired - Lifetime
- 2002-04-23 BR BR0205219-9A patent/BR0205219A/pt active Search and Examination
- 2002-04-23 US US10/332,567 patent/US7059548B2/en not_active Expired - Fee Related
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103764998A (zh) * | 2011-09-08 | 2014-04-30 | 德尔福技术控股有限公司 | 喷嘴 |
US9234487B2 (en) | 2011-09-08 | 2016-01-12 | Delphi International Operations Luxembourg S.A.R.L. | Injection nozzle |
CN103764998B (zh) * | 2011-09-08 | 2016-09-14 | 德尔福国际运营卢森堡有限公司 | 喷嘴 |
CN104373267A (zh) * | 2013-08-14 | 2015-02-25 | 大陆汽车有限公司 | 用于喷射阀的阀组件和喷射阀 |
CN104373267B (zh) * | 2013-08-14 | 2018-03-27 | 大陆汽车有限公司 | 用于喷射阀的阀组件和喷射阀 |
CN105829701A (zh) * | 2013-12-13 | 2016-08-03 | 罗伯特·博世有限公司 | 燃料喷射阀 |
US10753332B2 (en) | 2013-12-13 | 2020-08-25 | Robert Bosch Gmbh | Fuel injector having a throttle element |
CN105065095A (zh) * | 2015-08-21 | 2015-11-18 | 南岳电控(衡阳)工业技术有限公司 | 一种尿素直喷喷嘴 |
CN110709599A (zh) * | 2017-06-06 | 2020-01-17 | 株式会社电装 | 燃料喷射阀 |
CN111425322A (zh) * | 2020-03-30 | 2020-07-17 | 广西松浦电子科技有限公司 | 一种摩托车专用低噪声喷油器 |
CN111425322B (zh) * | 2020-03-30 | 2021-07-06 | 广西松浦电子科技有限公司 | 一种摩托车专用低噪声喷油器 |
Also Published As
Publication number | Publication date |
---|---|
JP4181418B2 (ja) | 2008-11-12 |
EP1387942A1 (de) | 2004-02-11 |
US7059548B2 (en) | 2006-06-13 |
DE10122353B4 (de) | 2004-04-22 |
WO2002090757A1 (de) | 2002-11-14 |
DE50206024D1 (de) | 2006-05-04 |
JP2004519600A (ja) | 2004-07-02 |
DE10122353A1 (de) | 2002-11-28 |
BR0205219A (pt) | 2003-06-24 |
EP1387942B1 (de) | 2006-03-08 |
US20030155448A1 (en) | 2003-08-21 |
CZ200337A3 (cs) | 2004-08-18 |
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