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WO2018198632A1 - Vanne d'injection de carburant - Google Patents

Vanne d'injection de carburant Download PDF

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Publication number
WO2018198632A1
WO2018198632A1 PCT/JP2018/012167 JP2018012167W WO2018198632A1 WO 2018198632 A1 WO2018198632 A1 WO 2018198632A1 JP 2018012167 W JP2018012167 W JP 2018012167W WO 2018198632 A1 WO2018198632 A1 WO 2018198632A1
Authority
WO
WIPO (PCT)
Prior art keywords
passage
fuel
fuel injection
needle
valve body
Prior art date
Application number
PCT/JP2018/012167
Other languages
English (en)
Japanese (ja)
Inventor
鈴木　雅幸
侑己 田北
浩一朗 安田
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
Priority to DE112018002145.9T priority Critical patent/DE112018002145T5/de
Publication of WO2018198632A1 publication Critical patent/WO2018198632A1/fr

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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
    • 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
    • F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188
    • 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
    • F02M61/1866—Valve seats or member ends having multiple cones

Definitions

  • This disclosure relates to a fuel injection valve.
  • the fuel injection valve described in Patent Document 1 has a configuration in which a spiral swirl groove is provided on the outer peripheral portion of a needle that is reciprocally accommodated in a nozzle body, whereby the fuel flow that has passed through the seat portion is reduced. A swirl component is imparted, and fuel spray having high dispersion characteristics is formed by swirling the fuel.
  • the fuel injection valve of Patent Document 1 has a configuration in which high dispersion characteristics are uniformly imparted in any fuel injection state during fuel injection. Therefore, it is impossible to realize fuel injection even in a situation where it is desirable to form a spray with a strong penetration state instead of a spray with a high dispersion state.
  • spray penetration is insufficient during high-load operation of an internal combustion engine, combustion concentrates in a region near the fuel injection valve in the combustion chamber. As a result, the amount of oxygen is locally insufficient, and problems such as a decrease in output and an increase in smoke due to a decrease in combustion speed may occur.
  • the spray penetration is excessive, heat escape near the wall surface in the combustion chamber is increased, which may cause a problem of deterioration in fuel consumption due to a decrease in efficiency.
  • the present disclosure has been made in view of the above-described problems, and a main object thereof is to provide a fuel injection valve that can appropriately switch fuel spray.
  • a fuel injection valve includes a body that has a cylindrical shape and has a sac chamber and an injection hole extending from the sac chamber at a distal end portion thereof, and a valve body that is provided in the body so as to be capable of reciprocating.
  • a fuel injection valve that injects fuel from the nozzle hole by separating from a seated state with respect to the inner peripheral surface of the body, wherein the valve body has a through passage extending in an axial direction thereof.
  • the passage inlet of the through passage is provided on the downstream side of the seat portion seated on the inner peripheral surface of the body in the valve body and on the upstream side of the sac chamber.
  • the valve body when the valve body is separated from the inner peripheral surface of the body when the fuel injection valve is opened, fuel can flow into the sac chamber through two paths.
  • One path is a path that passes through a gap between the inner peripheral surface of the body and the outer peripheral surface of the valve body, and the other path is a path that passes through a through passage provided in the valve body.
  • the passage inlet is provided on the downstream side of the seat part of the valve body and on the upstream side of the sac chamber, so that fuel does or does not flow into the through-passage. Is switched according to the lift amount of the valve body.
  • the gap between the inner peripheral surface of the body and the outer peripheral surface of the valve body is small, so that fuel easily flows into the through passage, and the fuel sucks through the through passage. Flows into the room. Further, in a situation where the lift amount of the valve body is relatively large, the gap between the inner peripheral surface of the body and the outer peripheral surface of the valve body is large, so that it is difficult for the fuel to flow into the through passage, and the fuel passes through the through passage. It flows into the sac chamber via a gap between the inner peripheral surface of the body and the outer peripheral surface of the valve body.
  • FIG. 1 is a cross-sectional view showing a configuration of a tip portion of a fuel injection valve
  • 2 (a) is a perspective view showing the tip configuration of the needle
  • FIG. 2 (b) is a front view of the needle viewed from the tip side.
  • FIG. 3 is a diagram for supplementarily explaining the configuration of the needle
  • 4A is a diagram showing the flow of fuel when the needle lift amount is small
  • FIG. 4B is a diagram showing the fuel flow when the needle lift amount is small
  • 5A is a diagram showing fuel spray when the needle lift amount is small
  • FIG. 5B is a diagram showing fuel spray when the needle lift amount is small
  • FIG. 6 is a diagram showing a configuration around the combustion chamber of the engine
  • FIG. 7 is a diagram showing a configuration of a needle in another example.
  • FIG. 8 is a diagram showing a configuration of a needle in another example.
  • FIG. 9 is a diagram showing a configuration of a needle in another example.
  • the present embodiment embodies a fuel injection valve used in a diesel engine for a vehicle, and the fuel injection valve performs a valve opening operation in response to a valve opening command signal from an electronic control unit (ECU).
  • ECU electronice control unit
  • the high-pressure fuel accumulated in the common rail is injected into the engine combustion chamber.
  • FIG. 6 is a diagram showing a configuration around the combustion chamber of the engine.
  • a piston 12 is accommodated in a cylinder 11 of the engine, and a combustion chamber 13 is formed on the upper surface side of the piston 12.
  • a recess 12a (cavity) is formed on the upper surface of the piston 12 so as to extend in the radial direction from the center.
  • the fuel injection valve 20 realizes so-called center injection, and is provided at a position substantially at the center of the combustion chamber 13 in the cylinder head 14 above the piston 12.
  • the fuel injection valve 20 has a cylindrical nozzle holder 21 as a configuration of its tip portion, and a nozzle body 22 held by the nozzle holder 21, and radially from the tip portion of the nozzle body 22 as shown in the figure. Fuel spray F is injected.
  • FIG. 1 is an enlarged cross-sectional view showing the main configuration of the tip of the fuel injection valve 20.
  • the nozzle body 22 is formed in a bottomed cylindrical shape, and an inner wall surface 23 having the same diameter and extending along the central axis J as an inner peripheral surface thereof, and an inner diameter is reduced as it approaches the tip.
  • a conical conical surface 24 and a concave surface 25 formed in a concave shape at the bottom of the cylindrical portion.
  • the accommodation chamber 26 in the nozzle body 22 accommodates a needle 30 as a valve body, and the conical surface 24 serves as a valve seat portion that comes into contact with the needle 30.
  • a portion surrounded by the concave surface 25 is a sack chamber 27.
  • a plurality of nozzle holes 28 extending from the sack chamber 27 and opening to the outer surface of the nozzle body are formed at the tip of the nozzle body 22.
  • the injection holes 28 are provided, for example, at several or even ten locations evenly in the circumferential direction so as to extend radially from the central axis J of the fuel injection valve 20.
  • the concave surface 25 surrounding the sac chamber 27 has a curved portion serving as a bottom portion and a side wall portion extending along the central axis J other than the bottom portion, and each nozzle hole 28 is formed in the side wall portion. ing. However, each nozzle hole 28 may be formed in the bottom (curved portion).
  • Each injection hole 28 is provided so as to extend in a direction intersecting the central axis J, and an angle ⁇ formed by the central axis J and the direction in which the injection hole 28 extends on the front end side in the axial direction of the fuel injection valve 20 is: It is within the range of 45 to 90 °.
  • the sac chamber 27 and each nozzle hole 28 are always in communication regardless of the lift state of the needle 30.
  • the sac chamber 27 serves as a distribution chamber that distributes fuel to the injection holes 28 when the fuel injection valve 20 is opened.
  • the needle 30 is accommodated in an accommodating chamber 26 in the nozzle body 22 so as to be capable of reciprocating in the axial direction.
  • the needle 30 is disposed coaxially with the nozzle body 22.
  • the needle 30 has a substantially cylindrical shape, and has a shaft portion 31 having the same outer diameter, and a conical cone portion 32 whose outer diameter is reduced toward the tip on the tip side of the shaft portion 31. ing.
  • the conical portion 32 has two tapered portions 33 and 34 having different inclination angles with respect to the central axis J.
  • the taper portions 33 and 34 are also referred to as an upper taper portion 33 and a lower taper portion 34 below.
  • the lower taper portion 34 has a larger inclination angle with respect to the central axis J than the upper taper portion 33.
  • the inclination angle of the upper tapered portion 33 is smaller than the inclination angle of the conical surface 24, and the inclination angle of the lower tapered portion 34 is larger than the inclination angle of the conical surface 24. Is also getting bigger.
  • the upper end portion of the lower taper portion 34 that is, the boundary portion between the upper taper portion 33 and the lower taper portion 34 is the seat portion 34 a, and in the valve closing state shown in FIG. Sheet portion 34a abuts.
  • the tip surface 35 of the needle 30 is positioned on the tip side in the axial direction with respect to the inner opening of the injection hole 28.
  • the tip surface 35 is a flat surface extending in a direction orthogonal to the axial direction.
  • a fuel passage is formed between the inner peripheral surface of the nozzle body 22 and the outer peripheral surface of the needle 30, and a lower tapered portion 34 (seat portion) with respect to the conical surface 24 on the nozzle body 22 side.
  • the needle 30 has a through passage 36 extending in the axial direction thereof. That is, the lower taper portion 34 of the needle 30 has a plurality of (eight in the present embodiment) through passages 36 penetrating through the needle 30 and linearly communicating at two different positions in the axial direction. Is formed.
  • the through passage 36 is provided in an oblique direction with respect to the central axis J.
  • the nozzle hole 28 is provided at a position different from the extension line obtained by extending the axis of the through passage 36.
  • the plurality of through passages 36 are each formed so as to face a predetermined range (tip surface 35) including the central axis J of the needle 30 in the axial direction of the needle 30.
  • a passage inlet 36 a is provided on the outer surface of the lower tapered portion 34, and a passage outlet 36 b is provided on the distal end surface 35, and a linear through passage is provided between the passage inlet 36 a and the passage outlet 36 b. 36 is formed.
  • the inclination angle of the through passage 36 with respect to the central axis J is larger than the inclination angle of the outer surface of the lower taper portion 34.
  • the passage inlets 36a are provided in the same number as the through passages 36, whereas the passage outlets 36b are provided in common in the respective through passages 36.
  • the through passages 36 are formed radially from the central axis J at equal intervals in the circumferential direction.
  • the diameter of the through passage 36 is, for example, about 0.1 mm.
  • the diameter of the passage outlet 36b may be the same as the diameter of the through passage 36, but may be larger than the diameter of the through passage 36.
  • the diameter of the passage outlet 36b is, for example, about 0.2 mm.
  • the passage inlet 36 a of the through passage 36 is provided on the downstream side of the seat portion 34 a and on the upstream side of the sack chamber 27.
  • the passage inlet 36a may be provided on the upstream side of the sac chamber 27 in the valve-closed state (on the opposite side to the inlet of the sac chamber 27 in the axial direction).
  • the passage inlet 36a is provided in the lower taper portion 34 of the taper portions 33, 34 of the conical portion 32, inflow of fuel to the through passage 36 is prevented in the valve-closed state.
  • the passage inlet 36 a is provided at a position facing the conical surface 24 of the nozzle body 22.
  • the needle 30 has a facing portion facing the conical surface 24 of the nozzle body 22 in a close state from the seat portion 34a to a portion serving as the inlet of the sack chamber 27, and a passage inlet 36a is provided in the facing portion. It has been.
  • the tip of the needle 30 is accommodated in a state of protruding into the sac chamber 27, and a passage outlet 36 b is provided at a protruding portion of the needle 30 protruding into the sack chamber 27.
  • the distal end surface 35 of the needle 30 is positioned on the distal end side with respect to the inner opening portion of the injection hole 28, so that the passage outlet 36 b is similarly more distal than the inner opening portion of the injection hole 28.
  • the passage outlet 36 b is provided on the tip side of the nozzle hole 28 in the axial direction of the needle 30.
  • D ⁇ b> 1 is an outer diameter dimension of the seat portion 34 a in the needle 30.
  • D2 is an outer diameter dimension of a portion connecting positions that are the outermost peripheral portions with respect to the passage inlet 36a of the through passage 36.
  • D3 is the outer diameter of the entrance of the sack chamber 27.
  • D1 when D1 to D3 are compared, D1> D2. Therefore, in the valve closed state, that is, in the state where the needle 30 is seated on the nozzle body 22, the inflow of fuel to the through passage 36 is prevented. Further, D2> D3. Therefore, the passage outlets 36b of the respective through passages 36 are concentrated in the vicinity of the central axis J of the needle 30, and fuel collision is likely to occur in the vicinity of the central axis J.
  • the passage outlet 36 b is provided on the tip side of the nozzle hole 28 in the axial direction of the needle 30, and the nozzle hole 28 is provided at a position different from the extension line obtained by extending the axis of the through passage 36.
  • each through passage 36 is formed so as to face a predetermined range including the central axis J of the needle 30, a situation in which turbulence of the fuel flow in the sac chamber 27 is likely to occur is suitably created. It is like that.
  • a highly dispersed spray is formed in the combustion chamber.
  • the fuel spray can be separated from the wall surface (for example, the concave wall surface of the piston 12) in the combustion chamber, and heat escape to the wall surface can be suppressed during fuel combustion.
  • the separation distance of the lower taper portion 34 of the needle 30 from the conical surface 24 of the nozzle body 22, that is, the nozzle body 22 and the needle 30 are close to each other.
  • the gap distance between the opposing parts is large. Therefore, the fuel flowing from the upstream side in the fuel injection valve 20 does not flow into the through passage 36 and passes through the gap passage between the nozzle body 22 and the needle 30. Then, the fuel flows directly into the injection hole 28 from the gap passage and is injected from the injection hole 28. In this case, the fuel flow is less likely to be disturbed in the sac chamber 27.
  • a strongly penetrating spray is formed in the combustion chamber.
  • the fuel spray can reach the wall surface (for example, the concave wall surface of the piston 12) in the combustion chamber, and the air (oxygen) in the combustion chamber including the air (oxygen) in the vicinity of the wall surface is effectively used during fuel combustion. It can be used up.
  • the ratio of the fuel amount passing through the through passage 36 in the injected fuel amount is different, and FIG. 4 (a), that is, the lift amount of the needle 30 is smaller.
  • the ratio of the fuel passing through the through passage 36 is increased.
  • the smaller the lift amount of the needle 30 is the larger the proportion of the fuel that passes through the through passage 36 is.
  • the larger the lift amount of the needle 30 the more the fuel that passes through the through passage 36 is. The ratio becomes smaller.
  • the fuel injection amount is controlled based on the engine speed and load, and the fuel injection amount increases as the engine speed increases or the load increases.
  • strong injection is performed because the injection pulse becomes longer in a high rotation state or a high load state.
  • low rotation state or a low load state since the injection pulse becomes short, it is conceivable that high dispersion injection is performed.
  • the fuel injection valve 20 is configured to perform fuel injection by flowing fuel through two paths when the fuel injection valve 20 is opened.
  • one path is a path that passes through the gap between the body inner peripheral surface and the needle outer peripheral surface
  • the other path is a path that passes through the through passage 36 of the needle 30.
  • the passage inlet 36 a is provided on the downstream side of the seat portion 34 a of the needle 30 and on the upstream side of the sack chamber 27, so that the fuel flows into or does not flow into the through passage 36. This can be switched according to the lift amount of the needle 30.
  • fuel spray in a highly dispersed state can be formed due to the disturbance of the fuel flow in the sac chamber 27.
  • the passage inlet 36 a of the through passage 36 is provided in the opposed portion facing the inner peripheral surface (conical surface 24) of the nozzle body 22 in a close state, so that the through passage in a situation where the lift amount of the needle 30 is relatively small.
  • the inflow of fuel to 36 can be suitably realized.
  • the passage outlet 36 b of the through passage 36 is provided in the protruding portion that protrudes into the sac chamber 27, so that when the fuel flows into the sac chamber 27 through the through passage 36, the fuel is in the body inner peripheral surface.
  • the fuel flows in at a deeper position in the sac chamber 27 than in the case where it flows into the sac 27 chamber through a gap between the needle and the outer peripheral surface of the needle. Therefore, it is possible to suitably create a situation in which the turbulence of the fuel flow in the sac chamber 27 is likely to occur.
  • the passage outlet 36b of the through passage 36 is provided on the tip side of the injection hole 28 in the axial direction of the needle 30, the fuel flowing to the sack chamber 27 side through the through passage 36 is directed to the tip side of the fuel injection valve 20. After flowing in the direction, it goes back (U-turn) toward the nozzle hole 28. Therefore, it is possible to suitably create a situation in which the turbulence of the fuel flow in the sac chamber 27 is likely to occur.
  • the injection hole 28 is provided at a position different from the extended line obtained by extending the axis of the through passage 36, the fuel that has passed through the through passage 36 does not directly reach the injection hole 28, but is injected through the collision and retention. 28 and is injected from the injection hole 28 into the combustion chamber. Thereby, desired high dispersion spray can be realized.
  • each through passage 36 is formed so as to face a predetermined range including the central axis J of the needle 30 in the axial direction of the needle 30, the fuel flowing to the sack chamber 27 side through each through passage 36 flows through the needle 30. It becomes easy to collide with each other in the vicinity of the central axis J. Therefore, the fuel flow is easily disturbed in the sac chamber 27, and a highly dispersed fuel spray can be suitably formed.
  • both high dispersion characteristic spray and strong penetration characteristic spray can be realized depending on the operating state of the engine and the like. As a result, it is possible to improve fuel consumption and exhaust in the engine.
  • ⁇ A modification of the through passage 36 in the needle 30 is shown below.
  • a passage outlet 36 b is provided for each through passage 36 as a difference from the configuration of FIG. 2 described above.
  • the plurality of through passages 36 are each formed so as to face a predetermined range (tip surface 35) including the central axis J of the needle 30 in the axial direction of the needle 30.
  • the tip surface 35 of the needle 30 is not a flat surface but a conical circle.
  • the tip surface 35 of the needle 30 may be a flat surface.
  • each through passage 36 is provided as a group of two.
  • the plurality of through passages 36 are provided so that an extension line obtained by extending the axis of each through passage 36 does not pass through the central axis J of the needle 30. It has been. However, all of the passage outlets 36 b are provided on the tip surface 35. In this case, the fuel flowing through the through passages 36 toward the sac chamber 27 turns in a predetermined direction (clockwise in FIG. 9B) in the sac chamber 27. Therefore, the fuel flow is easily disturbed in the sac chamber 27, and a highly dispersed fuel spray can be suitably formed.
  • the plurality of through passages 36 provided in the needle 30 may not all have the same diameter, and a large diameter through passage 36 and a small diameter through passage 36 may be provided in a mixed manner.
  • the needle 30 may be provided with large-diameter through passages 36 and small-diameter through passages 36 alternately in the circumferential direction.
  • the passage outlet 36b of the through-passage 36 in the needle 30 is provided on the tip side of the nozzle hole 28 in the needle axis direction, but this is changed so that the passage outlet 36b is changed to the nozzle hole in the needle axis direction.
  • 28 may be provided at the same position as that of the nozzle hole 28 or on the opposite end side from the nozzle hole 28.
  • the passage outlet 36b may be provided in the vicinity of the nozzle hole 28 in the axial direction of the needle 30 or on the tip side of the nozzle hole 28.
  • the conical portion 32 of the needle 30 is configured by the two tapered portions 33 and 34 having different inclination angles with respect to the central axis J.
  • the inclination angle may be constant throughout the entire area.
  • the fuel injection valve 20 is arranged at the center position of the combustion chamber 13 in the engine to perform center injection.
  • the fuel injection valve 20 may be disposed at a position deviated from the center position of the combustion chamber 13 and fuel injection may be performed from an oblique position of the combustion chamber 13.
  • the position and size of the injection hole 28 may be changed as appropriate according to the direction of spraying for each injection hole 28 while the configuration related to the through passage 36 of the needle 30 is the same.
  • the fuel injection valve 20 having the above configuration can be applied to, for example, a direct injection gasoline engine in addition to the diesel engine.

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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

L'invention concerne une vanne d'injection de carburant (20) comprenant : un corps (22) qui présente une forme cylindrique et possède une chambre en sac (27) au niveau d'une section d'extrémité distale ainsi que des trous d'injection (28) qui s'étendent depuis la chambre en sac ; et un élément de vanne (30) disposé à l'intérieur du corps de façon à être mobile dans un mouvement de va-et-vient. Lorsque l'élément de vanne est libéré d'un état dans lequel il est en appui sur une surface périphérique intérieure du corps, du carburant est injecté depuis des trous d'injection. L'élément de vanne comporte des passages de pénétration (36) qui s'étendent dans la direction axiale de celui-ci. Des entrées de passage (36a) des passages de pénétration sont disposées dans l'élément de vanne plus en aval qu'une section de siège (34a) qui repose sur la surface périphérique interne du corps et plus en amont que la chambre en sac.
PCT/JP2018/012167 2017-04-24 2018-03-26 Vanne d'injection de carburant WO2018198632A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112018002145.9T DE112018002145T5 (de) 2017-04-24 2018-03-26 Kraftstoffeinspritzventil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017085388A JP6747370B2 (ja) 2017-04-24 2017-04-24 燃料噴射弁
JP2017-085388 2017-04-24

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WO2018198632A1 true WO2018198632A1 (fr) 2018-11-01

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ID=63919122

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PCT/JP2018/012167 WO2018198632A1 (fr) 2017-04-24 2018-03-26 Vanne d'injection de carburant

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JP (1) JP6747370B2 (fr)
DE (1) DE112018002145T5 (fr)
WO (1) WO2018198632A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10196490A (ja) * 1997-01-14 1998-07-28 Zexel Corp 燃料噴射ノズル
JP2002161833A (ja) * 2000-09-14 2002-06-07 Denso Corp 燃料噴射ノズル
JP2007231852A (ja) * 2006-03-01 2007-09-13 Toyota Motor Corp 燃料噴射装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6426076B2 (ja) 2015-10-29 2018-11-21 日本電信電話株式会社 ルーティングテーブル生成装置、ルーティングテーブル生成方法、及びプログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10196490A (ja) * 1997-01-14 1998-07-28 Zexel Corp 燃料噴射ノズル
JP2002161833A (ja) * 2000-09-14 2002-06-07 Denso Corp 燃料噴射ノズル
JP2007231852A (ja) * 2006-03-01 2007-09-13 Toyota Motor Corp 燃料噴射装置

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JP6747370B2 (ja) 2020-08-26
JP2018184843A (ja) 2018-11-22
DE112018002145T5 (de) 2020-01-09

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