CN110541781A - 喷射器 - Google Patents
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- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000004043 responsiveness Effects 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000000446 fuel Substances 0.000 description 13
- 230000002093 peripheral effect Effects 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
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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
- 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
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
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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
- 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
- F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
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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
- 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
- F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
- F02M21/0266—Hollow stem valves; Piston valves; Stems having a spherical tip
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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
- 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
- F02M21/0272—Ball valves; Plate valves; Valves having deformable or flexible parts, e.g. membranes; Rotatable valves
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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
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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
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
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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
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Combustion & Propulsion (AREA)
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- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
提供一种喷射器,用物理方式抑制阀体位移时的倾斜,另外,通过使工作稳定化来防止挡止橡胶或阀体橡胶的不均匀磨损,从而消除阀体的位移量的增加以减小作用于板簧上的应力,进而不损害阀体的响应性且能够长期确保闭阀时的密封性。通过盘簧(7)和多个板簧(6、6)的配合在闭阀方向上对开闭阀(2)的阀体(21)施加力,从而在未通电时维持闭阀状态,盘簧沿所述阀体(21)的行程方向配置,多个板簧相对于阀体(21)的行程方向成直角设置且以支撑所述阀体(21)的方式配置。
Description
技术领域
本发明涉及一种用于喷射发动机所需流量的燃料的电磁驱动式喷射器,特别涉及一种常闭式喷射器,其借助由阀簧的弹性回弹力产生的弹簧载荷将开闭阀(燃料调节阀)的阀体压靠到阀座来确保闭阀时的密封性。
背景技术
以往使用的电磁驱动式喷射器是对电磁线圈通电来进行励磁并由此来吸引可动铁芯从而使开闭阀进行开阀,然而,为了达到下述目的,即,将用于使开闭阀进行工作的电信号设定为0.001~0.02秒左右的工作信号,并通过重复这样的极短的工作时间来正确地控制燃料的目的,燃料喷射阀自身需要有高度的响应性,另外,由于近年来用户对高品质的需求,还要求其具有非常高的耐用性。
并且,作为用于使喷射器的阀体进行闭阀的阀簧,已有:使用了在固定铁芯与可动铁芯之间装入的盘簧的结构,以及使用了如下的薄板状的板簧的结构,即,固定外侧周缘部从而在能够移位的中心固定有可动铁芯和阀体且能够使燃料通过的薄板状的板簧的结构,例如日本实开昭61-105756号公报所公开的那样,在喷射天然气(CNG)等气体燃料的喷射器中,由于不像喷射液体燃料的喷射器那样有润滑油,因而在耐用性以及响应性方面,使用没有滑动部且能够支撑为浮动状态并进行直线运动的板簧的结构是有利的。
但是,在利用所述板簧对阀体施加力的结构的喷射器中,借助板簧的弹性回弹力所产生的弹簧载荷可以确保闭阀时的密封性,但是由于构成板簧的材料的老化会导致板簧的弹性回弹力降低从而使弹簧载荷减小,由此会使开闭阀的密封性变得不充分,容易出现在闭阀时燃料泄漏的问题。
因此,在日本特开2009-91998号公报中公开有一种喷射器,沿着上述阀体的行程方向设置盘簧,在闭阀时通过板簧和盘簧这2个弹簧进行配合来以双重的弹簧载荷维持闭阀状态,由此,利用阀簧的弹簧载荷能够长期确保阀体的闭阀状态。
另外,通常对于喷射气体燃料的喷射器来说,若想获得与使用液体燃料时相同的发动机输出,则需要具有比使用液体燃料时更大的燃料通过截面面积,因而阀体的位移量会变大。因此,若使用板簧结构,则由于作用在板簧上的应力的关系,必然会使喷射器主体变大,但是,如日本特开2008-144693号公报所公开的那样,可知,将阀体支撑在浮动状态的开闭阀的中间,并使用盘簧来作为复位弹簧,由此能够不损害板簧结构的优点并防止大型化。
但是,上述以往的板簧结构是由1个弹簧体构成的,因而仅用中央部这一点来支撑阀体,会有由于各种干扰而导致工作不稳定的倾向,若在开闭阀时向可动铁芯上具有的挡止橡胶(Stopper rubber)或阀体上具有的阀体橡胶(Valve rubber)施加局部的力,则会使所述挡止橡胶或阀体橡胶出现不均匀磨损,由此会使阀体的位移量增加,使作用在板簧上的应力变大,因此存在发生喷射器的功能受损的情况的问题。
现有技术文献
专利文献
专利文献1:日本实开昭61-105756号公报
专利文献2:日本特开2009-91998号公报
专利文献3:日本特开2008-144693号公报
发明内容
发明要解决的问题
本发明旨在解决上述那样的问题点,其课题在于,提供一种常闭式喷射器,用物理方式抑制阀体位移时的倾斜,另外,通过使工作稳定化来阻止所述挡止橡胶或阀体橡胶等的不均匀磨损,从而消除阀体的位移量的增加以减小作用于板簧上的应力,进而不损害阀体的响应性且能够长期确保闭阀时的密封性。
用于解决问题的手段
用于解决所述问题的本发明的喷射器,利用电磁驱动,并通过盘簧和板簧的配合在闭阀方向上对开闭阀的阀体施加力,从而在未通电时维持闭阀状态,所述盘簧沿所述阀体的行程方向配置,所述板簧相对于阀体的行程方向成直角设置且以支撑所述阀体的方式配置,该喷射器的特征在于,所述板簧由沿所述阀体的行程方向配置的多个板簧形成。
另外,在本发明中,所述多个板簧以沿所述阀体的行程方向相互具有规定的间隔的方式配置,由此,能够使各板簧上产生的阀体开闭时的应力切实且均匀地分散并减小。
进而,在本发明中,当所述多个板簧为2个时,能够通过较少的部件和简单的结构来发挥效果。
发明的效果
根据本发明,能够提供一种常闭式喷射器,用物理方式抑制阀体位移时的倾斜,另外,通过使工作稳定化来防止所述挡止橡胶或阀体橡胶等的不均匀磨损,从而消除阀体的位移量的增加以减小作用于板簧上的应力进而防止损伤,不损害阀体的响应性且能够长期确保闭阀时的密封性。
附图说明
图1是示出本发明的实施方式的喷射器的闭阀状态的纵剖面局部视图。
附图标记说明
1喷射器、2开闭阀、3电磁线圈、4下板、5可动铁芯、6板簧、7盘簧、8内环、9主体、10外环、11固定铁芯、21阀体、22阀座、51挡止橡胶、61内周缘、62外周缘、91喷嘴、211阀体橡胶、221密封面
具体实施方式
下面,参照附图对本发明的优选实施方式进行详细说明。
图1示出了用于实施本发明优选实施方式的电磁驱动式喷射器1的以开闭阀2为中心的纵剖面局部的概要视图,该喷射器1向燃气发动机供给燃料,所述开闭阀2包括阀体21和阀座22;喷射器1具有电磁线圈3、下板4以及可动铁芯5,在可动铁芯5的下侧(下游侧)配置有前端具有阀体橡胶211的阀体21,可动铁芯5和阀体21被一对薄板圆盘状的板簧6、6以浮动状态支撑,该一对板簧6、6被配置为相对于阀行程方向成直角。
并且,各板簧6固定于主体9侧,该主体9具有用于使燃料通过的规定形状的开放部且该主体9的周缘部形成有喷嘴91,各板簧6将可动铁芯5支撑在上侧(上流侧)且将阀体21支撑在下侧(下游侧),并且,各板簧6的中央部因弹性变形而在上下方向上往复位移,各板簧6被盘簧7的载荷向下方向按压,使得阀体21的阀体橡胶211紧贴阀座22的密封面221从而形成闭阀状态。
此外,在本实施方式中,所述板簧6、6的内周缘固定在中空圆柱状的内环8上,该内环8以夹在所述可动铁芯5与阀体21之间的方式配置,并且,所述板簧6、6的外周缘固定在中空圆柱状的外环10上,该外环10以夹在主体9与下板4之间的方式配置,由此,所述板簧6、6通过被架设在主体9和与可动铁芯5联动的阀体21之间而被支撑,使得所述板簧6、6相互间有规定的间隔从而以相对于阀行程方向成直角的方式并排设置。
另外,与以往示例同样地,在阀体21的上方沿阀行程方向设置有盘簧7,盘簧7以在闭阀方向上对开闭阀2的阀体21施加力的方式在上下方向上以压缩状态配置。
此外,在附图中,附图标记51为挡止橡胶,其配置于可动铁芯5的上流侧,当开阀时,在可动铁芯5(阀体21)上升时,该挡止橡胶用于吸收可动铁芯5碰撞固定铁芯11的底部时的冲击。
具有以上结构的本实施方式与以往的该种喷射器同样地,通过对电磁线圈3通电来进行励磁来吸引可动铁芯5,从而对抗上述盘簧7与板簧6、6的作用力来打开开闭阀2,但是在本实施方式中,阀体21由以具有规定的间隔的方式配置的多个(2个)板簧6、6支撑。
由此,与使用了仅用中央部的一点来支撑阀体的一个板簧的上述以往的板簧结构不同,由于是由以规定的间隔的方式配置的2个板簧6、6支撑,因此不会因各种干扰而使工作不稳定,在开闭阀时,不会使所述阀体橡胶211(或挡止橡胶51)不均匀地磨损,也不会使阀体21的位移量增加,并且不会使作用在板簧6、6上的应力变大,因而不会发生损害喷射器1的功能的情况。
尤其,在本实施方式中,由于板簧6、6的内周缘61和外周缘62通过内环8和外环10固定在规定位置上,因而板簧6、6以沿阀行程方向成直角且相互间具有规定间隔的方式分别被切实地支撑在规定位置上,使得弹簧能够切实地工作,并且在组装时也很简单且能够快速地制造。
此外,在本实施方式中,为了减少部件数量以及使结构简化而使用了2个板簧6、6,但是也可以使用多个板簧,可以根据所采用的喷射器1的容量,进而板簧6、6的材质或厚度等来适当地选择和使用板簧。
Claims (3)
1.一种喷射器,利用电磁驱动,并通过盘簧和板簧的配合在闭阀方向上对开闭阀的阀体施加力,从而在未通电时维持闭阀状态,所述盘簧沿所述阀体的行程方向配置,所述板簧相对于阀体的行程方向成直角设置且以支撑所述阀体的方式配置,该喷射器的特征在于,
所述板簧由沿所述阀体的行程方向配置的多个板簧形成。
2.根据权利要求1所述的喷射器,其特征在于,所述多个板簧以沿所述阀体的行程方向相互具有规定的间隔的方式配置。
3.根据权利要求1或2所述的喷射器,其特征在于,所述多个板簧为2个。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2018-102499 | 2018-05-29 | ||
JP2018102499A JP7197108B2 (ja) | 2018-05-29 | 2018-05-29 | インジェクタ |
Publications (1)
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CN110541781A true CN110541781A (zh) | 2019-12-06 |
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Application Number | Title | Priority Date | Filing Date |
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CN201910392365.6A Pending CN110541781A (zh) | 2018-05-29 | 2019-05-13 | 喷射器 |
Country Status (5)
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US (1) | US20190368457A1 (zh) |
EP (1) | EP3575585A1 (zh) |
JP (1) | JP7197108B2 (zh) |
KR (1) | KR20190135918A (zh) |
CN (1) | CN110541781A (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102018122250A1 (de) * | 2018-09-12 | 2020-03-12 | Liebherr-Components Deggendorf Gmbh | Ventil eines Kraftstoffinjektors |
CN115306600B (zh) * | 2022-08-18 | 2023-12-29 | 一汽解放汽车有限公司 | 燃气喷射阀和汽车 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4948891B1 (zh) * | 1970-07-03 | 1974-12-24 | ||
US4365747A (en) * | 1979-09-08 | 1982-12-28 | Robert Bosch Gmbh | Electromagnetically actuatable fuel injection valve |
ATA33698A (de) * | 1998-02-24 | 2005-04-15 | Hoerbiger Ventilwerke Gmbh | Gasventil |
WO2016023757A1 (en) * | 2014-08-14 | 2016-02-18 | Continental Automotive Gmbh | Solenoid actuated fluid injection valve |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61105756U (zh) | 1984-12-19 | 1986-07-04 | ||
DE3531153A1 (de) * | 1985-06-14 | 1986-12-18 | Pierburg Gmbh & Co Kg, 4040 Neuss | Elektromagnetisches, intermittierendes einspritzventil |
DE8809143U1 (zh) * | 1988-07-16 | 1989-11-16 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
JP3640000B2 (ja) * | 1995-12-21 | 2005-04-20 | 株式会社ニッキ | 燃料噴射弁 |
JP4948891B2 (ja) | 2005-05-31 | 2012-06-06 | 花王株式会社 | 紙質向上剤 |
JP2008144693A (ja) | 2006-12-12 | 2008-06-26 | Nikki Co Ltd | 燃料噴射弁 |
JP2009091998A (ja) | 2007-10-10 | 2009-04-30 | Nikki Co Ltd | インジェクタ |
JP5644450B2 (ja) | 2010-12-07 | 2014-12-24 | 株式会社明電舎 | 産業車両のステアリング装置 |
JP2018044494A (ja) * | 2016-09-15 | 2018-03-22 | 株式会社ケーヒン | 燃料噴射弁 |
-
2018
- 2018-05-29 JP JP2018102499A patent/JP7197108B2/ja active Active
-
2019
- 2019-05-03 KR KR1020190052111A patent/KR20190135918A/ko not_active Application Discontinuation
- 2019-05-13 CN CN201910392365.6A patent/CN110541781A/zh active Pending
- 2019-05-21 EP EP19175770.7A patent/EP3575585A1/en not_active Withdrawn
- 2019-05-28 US US16/424,458 patent/US20190368457A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4948891B1 (zh) * | 1970-07-03 | 1974-12-24 | ||
US4365747A (en) * | 1979-09-08 | 1982-12-28 | Robert Bosch Gmbh | Electromagnetically actuatable fuel injection valve |
ATA33698A (de) * | 1998-02-24 | 2005-04-15 | Hoerbiger Ventilwerke Gmbh | Gasventil |
WO2016023757A1 (en) * | 2014-08-14 | 2016-02-18 | Continental Automotive Gmbh | Solenoid actuated fluid injection valve |
Also Published As
Publication number | Publication date |
---|---|
US20190368457A1 (en) | 2019-12-05 |
JP2019206935A (ja) | 2019-12-05 |
JP7197108B2 (ja) | 2022-12-27 |
EP3575585A1 (en) | 2019-12-04 |
KR20190135918A (ko) | 2019-12-09 |
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