WO2020174993A1 - Injecteur - Google Patents

Injecteur Download PDF

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Publication number
WO2020174993A1
WO2020174993A1 PCT/JP2020/003371 JP2020003371W WO2020174993A1 WO 2020174993 A1 WO2020174993 A1 WO 2020174993A1 JP 2020003371 W JP2020003371 W JP 2020003371W WO 2020174993 A1 WO2020174993 A1 WO 2020174993A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
outer needle
housing
injection port
inner needle
Prior art date
Application number
PCT/JP2020/003371
Other languages
English (en)
Japanese (ja)
Inventor
友基 藤野
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2020174993A1 publication Critical patent/WO2020174993A1/fr

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • F02M67/14—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type characterised by provisions for injecting different fuels, e.g. main fuel and readily self-igniting starting fuel

Definitions

  • the present disclosure relates to an injector.
  • Japanese Unexamined Patent Publication No. 20 15 _ 45 2 3 9 discloses a fuel injection valve having two valve bodies, a sub valve body and a main valve body.
  • This fuel injection valve drives a sub-valve body that has a small opening by electromagnetic force to open the valve, and by opening the sub-valve body, the pressure difference between the main valve body is released and the main valve body is easily moved. Open the valve. Summary of the invention
  • an injector includes a housing having a first injection port, a housing provided on the opposite side of the housing from the first injection port, housed in the housing and the housing, and sliding in the housing and the housing. And a second dollar assembly for opening and closing the first nozzle, an electric actuator arranged outside the housing for driving and moving the second assembly, and housed in the housing for the second dollar assembly.
  • a fixed core for restricting movement of the assembly is provided, and the needle assembly includes an outer needle for opening and closing the first injection port, and a second injection port.
  • An inner needle for opening and closing the inner needle which is housed inside the outer needle and slides inside the outer needle; a stopper provided on the opposite side of the inner needle from the second injection port; A movable core driven by an actuator, the movable core moving the inner needle together with the stopper; and the outer needle having the inner needle moved in a valve opening direction of the second injection port.
  • the movable core has an abutting portion that abuts on the inner needle, and the movable core moves the inner needle by driving the electric actuator to open the second injection port, and the inner needle contacts the abutment portion. After the contact with the contact portion, the outer needle is moved to open the first injection port.
  • one movable core can control opening and closing of the two needles of the inner needle and the outer needle.
  • FIG. 1 is a schematic configuration diagram of an injector according to a first embodiment.
  • FIG. 2 is an explanatory view showing a state in which the electric actuator is driven to open the inner needle and the inner needle comes into contact with the abutting portion
  • Fig. 3 is an explanatory view showing a state in which the outer needle is opened and the movable core contacts the fixed core.
  • Fig. 4 is an explanatory view showing a state in which the inner needle and the outer needle are lowered after the movable core contacts the fixed core.
  • Fig. 5 is an explanatory view showing a state in which the drive of the electric actuator is stopped and the inner needle is closed.
  • Fig. 6 is an explanatory diagram showing a state in which the drive of the electric actuator is stopped and the outer needle is closed.
  • Fig. 7 is a time chart showing the drive voltage of the electric actuator and the open/closed state of the inner needle and outer needle.
  • FIG. 8 is an explanatory view showing a state in which the movable core is moved in the outer needle direction, ⁇ 02020/174993 3 ⁇ (: 171?2020/003371
  • Fig. 9 is an explanatory view showing the method of welding the stopper to the inner needle.
  • Fig. 10 is an explanatory diagram showing the needle assembly after stopper welding.
  • FIG. 11 is a schematic configuration diagram of an injector according to a second embodiment
  • FIG. 12 is a cross-sectional view of a nozzle of the injector of the second embodiment.
  • the injector 100 includes a housing 10, an outer needle 20, an inner needle 30, a movable core 40, a stopper 50, an electric actuator 60, and a fixed core. 70, springs 803 and 8013, and a housing 90.
  • the outer needle 20, the inner needle 30, the movable core 40, and the stopper 50 are collectively referred to as a "needle assembly".
  • the housing 10 is a tubular member having a first injection port 10 at one end.
  • the housing 10 is made of, for example, martensite nonmagnetic stainless steel.
  • a housing 90 is provided on the opposite side of the housing 10 from the first injection port 10.
  • the housing 90 includes a substantially cylindrical first magnetic portion 903, a second magnetic portion 900, and a non-magnetic portion 90.
  • a first magnetic part 9 0 3 and the second magnetic portion 9 0_Rei a part member of substantially cylindrical formed in Fuwerai preparative based magnetic stainless steel.
  • the non-magnetic section 90 is a substantially cylindrical member provided between the first magnetic section 903 and the second magnetic section 900, and is a non-magnetic stainless steel of a stainless steel type. Is formed by. Inside the housing 10 and the housing 90, a needle assembly, a fixed core 70, springs 803 and 8013 are housed.
  • the outer needle 20 is a hollow cylindrical member having a second injection port 20 II.
  • the outer needle 20 includes a first outer needle portion 203, a second outer needle portion 20 and a contact portion 22. 1st outer needle part ⁇ 02020/174993 4 ⁇ (: 171?2020/003371
  • No. 203 has a second nozzle 20 communicating with the first nozzle 10 and has a function as a valve seat and a valve body for opening and closing the first nozzle 110 II. .. Therefore, the first outer needle portion 203 is made of martensite nonmagnetic stainless steel so as to be hard to wear.
  • the first outer needle portion 203 has a Pickers hardness of, for example, 600.
  • the second outer needle portion 201 3 is made of a ferrite type magnetic stainless steel.
  • the second Peckers hardness of the second outer needle portion 20 is, for example, 170.
  • An opening 200 is formed on a side surface of the second outer needle portion 20. The opening 200 connects the inside and the outside of the outer needle 20.
  • the first outer needle portion 203 and the second outer needle portion 203 are welded, and the inside thereof is hollow.
  • An abutting portion 22 is provided at the inner end of the first outer needle portion 20 3 and the second outer needle portion 20 3 at the end opposite to the first outer needle portion 20 3.
  • the contact portion 22 is made of martensite nonmagnetic stainless steel.
  • the Pickers hardness of the contact portion 22 is, for example, 600.
  • the inner needle 30 is the first inner needle portion 38, the second inner needle portion 30 and the third inner needle portion 3 from the side of the second nozzle 2 0 1 * 1 of the outer needle 20. Equipped with 0. Of these, the first inner needle portion 38 and the second inner needle portion 30 are housed inside the outer needle 20 and slide inside the outer needle 20. The third inner needle portion 300 is projected to the outside of the outer needle 20 from the side opposite to the second injection port 20 of the outer needle 20.
  • First inner needle unit 3_Rei 3 has a function as a valve body for opening and closing the second injection port 2 0.
  • the second inner needle portion 30 has a contact portion 30 that comes into contact with the contact portion 22 when the inner needle 30 moves in the valve opening direction.
  • the inner needle 30 is made of martensite type non-magnetic stainless steel so that the contact portion 30 is not worn.
  • the inner needle 30 has a Pickers hardness of, for example, 600. 3rd inner needle part 2nd inner needle part of 300 ⁇ 02020/174993 5 (:171?2020/003371
  • a stopper 50 is attached by welding on the side opposite to the 30 sill.
  • the stopper 50 may be attached to the third inner needle portion 300 by a method other than welding, such as screwing or pinning.
  • a movable core 40 is provided between the outer needle 20 and the stopper 50.
  • the movable core 40 includes a magnetic movable core portion 43, a first movable core portion 40, and a second movable core portion 400.
  • the first movable core portion 40 is located around the stopper 50, and the magnetic movable core portion 40 3 is arranged on the outer edge side of the first movable core portion 40.
  • the second movable core portion 400 is arranged on the outer needle 20 side of the first movable core portion 40.
  • Magnetic movable core portion 4 0 3 is formed by ferritic magnetic stainless steel, Vickers hardness, for example, 1 7 0.
  • the first movable core portion 40 and the second movable core portion 400 are made of non-magnetic stainless steel, and have Vickers hardness of 600, for example.
  • the second movable core portion 400 can be inserted with the contact portion 40 that comes into contact with the fixed core 70 when the needle assembly moves in the valve opening direction and the stopper 50. It has a large opening 406.
  • the contact portion 42 is in contact with the bottom of the opening 406.
  • the contact portion 42 is provided around the third inner needle portion 300.
  • the contact portion 42 is formed of non-magnetic stainless steel, and has a Pickers hardness of 600, for example.
  • the first movable core portion 40 is provided with a hole 40 and a concave portion 40 9 into which the outer needle 20 can be inserted.
  • a plurality of holes 40 are formed along the circumference with the inner needle 30 as the central axis.
  • the hole 40 is formed in parallel with the moving direction of the inner needle 30 and connects the opening 40 6 and the outer portion of the outer needle 20 to form a fuel flow channel 4 as described later. Function.
  • the fixed core 70 is a cylindrical member housed in the housing 90, and is provided at a position where movement is restricted so that the needle assembly does not move in the valve opening direction more than a certain amount.
  • First fixed core portion 7 0 3 is formed by ferritic magnetics stainless steel.
  • the Pickers hardness of the first fixed core portion 703 is, for example, 170.
  • the second stationary core portion 70 is made of martensitic non-magnetic stainless steel.
  • the Pickers hardness of the second fixed core portion 7 0 13 is, for example, 600.
  • the electric actuator 60 is formed of, for example, solenoid, and
  • a magnetic member 11 made of magnetic stainless steel is provided outside the electric actuator 60.
  • magnetic flux as shown by the arrow in Fig. 2 is generated inside and outside the electric actuator 60, and the magnetic member 11 and the first magnetic portion 903 and the first magnetic portion 90 A magnetic circuit passing through the fixed core portion 70 3 and is formed to move the movable core 40.
  • the electric actuator 60 further moves the inner needle 30 and the outer needle 20 through the movement of the movable core 40. The details of this operation will be described later.
  • the spring 803 biases the needle assembly in the valve opening direction, and the spring 80 biases the needle assembly in the valve closing direction.
  • the flow path of the fluid in the injector 100 is Explain 6.
  • flow passages 1 to 6 are formed as described below.
  • the flow path 1 is formed by the space inside the cylinder of the fixed core 70.
  • the channel 2 is formed by the space between the stopper 50 and the nonmagnetic portion 90.
  • ⁇ 3 is formed by an opening 4 0 6 of the first movable core part 4 0 spoon.
  • the channel 4 is formed by the hole 40 of the first movable core 40.
  • Channel 5 is connected to outer needle 20 ⁇ 02020/174993 7 ⁇ (: 171?2020/003371
  • the channel 6 is formed by the space between the outer needle 20 and the inner needle 30.
  • the channel 5 and the channel 6 are in communication with each other through the opening 200.
  • the diameter of the contact portion between the inner needle 30 and the outer needle 20 when the inner needle 30 is seated on the outer needle 20 is mouth 3, and the outer needle 20 when the outer needle 20 is seated on the housing 10 0
  • the elastic coefficient ! ⁇ is a value determined by the material and shape of the second outer needle portion 20 and the contact portion 22.
  • the conditions for opening the inner needle 30 are:
  • 0 1_Rei is a 2/4.
  • the valve closing force that acts on the inner needle 30 that opens when the valve opening force is small by the electric actuator 60 can be reduced, and the inner needle can be easily opened.
  • the fuel pressure acting on the outer needle 20 ⁇ 02020/174993 8 ⁇ (: 171?2020/003371
  • valve closing force can be set to a large value, it is possible to easily create a state in which only the inner needle 30 is opened.
  • mouth 3 is 1.2.01
  • ⁇ is 4.
  • the biasing force of the spring 80 is 31 ⁇ 1, and the lift amount!
  • suction mosquito electric A Kuchiyueta 6 0 necessary to open the inner needle 3 0 is 4. 2 4 1 ⁇ 1.
  • the left side of equation (2) is 17.041 ⁇ 1, and the right side is 53.1 ⁇ 1, which satisfies equation (2). Therefore, the inner needle 30 opens, but the outer needle 20 does not open.
  • the suction force of the electric actuator 60 required to open the outer needle 20 is 20.041 ⁇ from Equation (3).
  • the suction power of the electric actuator 60 can be easily controlled by the drive current that drives the electric actuator 60.
  • a voltage is applied to the electric actuator 60, and the suction force of the electric actuator 60 is set to be equal to or higher than the force for opening the inner needle 30.
  • the suction force at this time is less than the force for opening the outer needle 20.
  • the electric actuator 60 moves the movable core 40 in the valve opening direction (upward in the figure), and the movable core 40 moves the stopper 50 upward in the figure. Since the topper 50 and the inner needle 30 are fixed by welding, the inner needle 30 also moves upward and opens the second injection port 2011. That is, the inner needle 30 opens.
  • the fluid passes through the channels 1 to 5, the opening 200, the channel 6, the second nozzle 20 II, and is ejected from the first nozzle 1 0 1 * 1.
  • the suction force of the electric actuator 60 depends on the suction force of the electric actuator 60. ⁇ 02020/174993 9 ⁇ (: 171?2020/003371
  • both the abutting portion 30 of the inner needle 30 and the abutting portion 22 are formed of martensitic stainless steel having a high Pickers hardness, and therefore both are worn. It's hard to do.
  • both the first movable core portion 40 having the contact portion 40 1 of the movable core 40 and the second fixed core portion 70 of the fixed core 70 have a large Pickers hardness. Since it is made of martensite stainless steel, even if the abutting part 40 ⁇ 1 collides with the fixed core 70, it will not easily wear in any way.
  • the outer needle 20 is in a state of being opened with a certain size.
  • the contact portion 42 and the second movable core portion 400 are both formed of martensite stainless steel having a high Pickers hardness, the contact portion 42 is connected to the second movable core portion 4 Even if it collides with 0, neither is likely to wear. It should be noted that, in FIG. 4 and subsequent figures, some of the symbols and the flow of fuel are omitted because the figure becomes difficult to see.
  • the suction power of the electric actuator 60 disappears.
  • the stopper 50 and the inner needle 30 move downward due to the fluid pressure and the biasing force of the panel 80.
  • the 1st inner needle part 30 3 of the inner needle 30 is seated on the 1st outer needle part 20 3 of the outer needle 20 so that the 2nd injection port 2 of the outer needle 2 0 0 Close II and close inner needle 30.
  • the first inner needle portion 308 and the first outer needle portion 203 are both formed of martensitic stainless steel having a high Pickers hardness, the first inner needle portion 303 is Even if they are seated on the first outer-dollar part 203, they are not easily worn.
  • the outer needle 20 is not supported by any member. Further, the stopper 50 and the inner needle 30 move downward due to the fluid pressure and the biasing force of the spring 80. Therefore, it is difficult to maintain the state shown in FIG. 5, and then the outer needle 20 moves downward together with the stopper 50 and the inner needle 30.
  • the outer needle portion 203 and the housing 10 are both formed of martensite stainless steel having a high Pickers hardness, so that neither is easily worn.
  • FIG. 7 is a time chart showing the relationship between the drive voltage of the electric actuator 60 and the open/closed states of the inner needle 30 and the outer needle 20.
  • the inner needle 30 is opened by gradually increasing the driving voltage, that is, by first applying a small driving voltage to the electric actuator 60, and then a large driving voltage is applied.
  • the outer needle 20 can be opened as shown in Fig. 3.
  • the valve is closed, the inner needle 30 is closed as shown in Fig. 5 by stopping the voltage application to the electric actuator 60, and then the outer needle 20 is closed as shown in Fig. 6. Can be closed.
  • the opening/closing of the inner needle 30 and the outer needle 20 can be controlled by controlling the drive voltage of the electric actuator 60.
  • FIG. 8 shows a state in which the position of the movable core 40 is moved so that the movable core 40 and the contact portion are in contact with each other.
  • the stopper 5 0 can be welded to inner needle 30. Further, since the axial length of the inner needle 300 can be shortened, the injector 100 can be made compact. Further, when the stopper 50 is welded to the inner needle 30, it is possible to prevent the stopper 50 from coming off due to the impact when the movable core 40 collides with the fixed core 70. ⁇ 0 2020/174993 12 ⁇ (: 171? 2020 /003371
  • one movable core 40 is used for the inner needle 3
  • the cost can be reduced compared to providing two movable cores, one for the inner needle 30 and the other for the outer needle.
  • the valve opening force of the inner needle 30 is transmitted to the outer needle 20 by using the pressure of the fuel, and the outer needle 20 is not opened, but an electric valve is used. It is possible to control the opening and closing of the inner needle 30 and the outer needle 20 by moving the movable core 40 with the voltage applied to the actuator 60. Therefore, the fuel injected by the injector 100 is not limited to a liquid, and may be a gas that is a compressible fluid.
  • the first injection port 10 and the second injection port 20 can be provided on one axis, so that the injector 100 can be made smaller.
  • both the first injection port 10 II and the second injection port 20 are provided in the housing 10.
  • the first injection port 1011 and the second injection port 20 are both provided in the housing 10.
  • Figure 12 shows the X I I -X I cross section of Fig. 11.
  • the second injection port 20 II has a circular shape
  • the first injection port 10 II has an arc shape
  • a plurality of holes are formed around the second injection port 2 0 1 ⁇ . It is provided.
  • the first injection port 1011 is opened and closed by an outer needle 20 of the needle assembly
  • the second injection port is opened and closed by an inner needle 30 that slides inside the outer needle 20.
  • the first jet nozzle 10 and the second jet nozzle 20 may both be formed in the housing 10 as in the second embodiment, and the first jet nozzle 10 may be formed as in the first embodiment. It may be formed in the housing 10, the second nozzle 20 is formed in the outer needle 20 and the first nozzle 10 II and the second nozzle 20 II may be communicated with each other.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne un injecteur comprenant un logement (10) ayant un premier orifice d'injection (10h), un boîtier (90), un ensemble aiguille qui est reçu dans le logement et le boîtier pour ouvrir et fermer le premier orifice d'injection, un actionneur électrique (60) qui est disposé à l'extérieur du boîtier pour entraîner et déplacer l'ensemble aiguille, et un noyau fixe (70) qui est reçu dans le boîtier pour réguler le mouvement de l'ensemble aiguille, l'ensemble aiguille comprenant : une aiguille externe (20) qui ouvre et ferme le premier orifice d'injection et qui présente un second orifice d'injection (20h) ; une aiguille interne (30) qui est logée à l'intérieur de l'aiguille externe, coulisse à l'intérieur de l'aiguille externe, et ouvre et ferme le second orifice d'injection ; une butée (50) disposée sur le côté opposé de l'aiguille interne au second orifice d'injection ; et un noyau mobile (40) qui est entraîné par l'actionneur électrique et qui déplace l'aiguille interne conjointement avec la butée.
PCT/JP2020/003371 2019-02-26 2020-01-30 Injecteur WO2020174993A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-032314 2019-02-26
JP2019032314A JP7298184B2 (ja) 2019-02-26 2019-02-26 インジェクタ

Publications (1)

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WO2020174993A1 true WO2020174993A1 (fr) 2020-09-03

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192025A (ja) * 2006-01-17 2007-08-02 Hitachi Zosen Corp 内燃機関の燃料噴射装置およびスピンドルガイドの製造方法
US20150020769A1 (en) * 2012-02-07 2015-01-22 Westport Power Inc. Apparatus And Method For Igniting A Gaseous Fuel In A Direct Injection Internal Combustion Engine
JP2015045239A (ja) * 2013-08-27 2015-03-12 株式会社日本自動車部品総合研究所 燃料噴射弁
JP2017057785A (ja) * 2015-09-16 2017-03-23 株式会社デンソー 燃料噴射装置
JP2018044513A (ja) * 2016-09-16 2018-03-22 株式会社Ｓｏｋｅｎ 制御装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4621683Y1 (fr) * 1966-10-19 1971-07-27
JPH055471A (ja) * 1991-06-27 1993-01-14 Hino Motors Ltd 燃料噴射ノズル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192025A (ja) * 2006-01-17 2007-08-02 Hitachi Zosen Corp 内燃機関の燃料噴射装置およびスピンドルガイドの製造方法
US20150020769A1 (en) * 2012-02-07 2015-01-22 Westport Power Inc. Apparatus And Method For Igniting A Gaseous Fuel In A Direct Injection Internal Combustion Engine
JP2015045239A (ja) * 2013-08-27 2015-03-12 株式会社日本自動車部品総合研究所 燃料噴射弁
JP2017057785A (ja) * 2015-09-16 2017-03-23 株式会社デンソー 燃料噴射装置
JP2018044513A (ja) * 2016-09-16 2018-03-22 株式会社Ｓｏｋｅｎ 制御装置

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JP7298184B2 (ja) 2023-06-27

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