JP2005155453A - Sealing structure of fuel injection valve - Google Patents

Sealing structure of fuel injection valve Download PDF

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Publication number
JP2005155453A
JP2005155453A JP2003395369A JP2003395369A JP2005155453A JP 2005155453 A JP2005155453 A JP 2005155453A JP 2003395369 A JP2003395369 A JP 2003395369A JP 2003395369 A JP2003395369 A JP 2003395369A JP 2005155453 A JP2005155453 A JP 2005155453A
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Prior art keywords
fuel injection
injection valve
hole
seal member
cylinder head
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JP3876248B2 (en
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Seiji Matsumoto
誠司 松本
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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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
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a sealing member from being deformed or dropping by suppressing a pressure rise in a space sealed by the sealing member while holding a sealing function, such as the prevention of the invasion of water from an exterior in the sealing structure of the fuel injection valve of a cylinder direct injection internal combustion engine. <P>SOLUTION: In the sealing structure of the fuel injection valve, a protrusion (20) which projects outward from the upper surface of the sealing member (17) is provided at the sealing member (17) mounted at the upper part of the fuel injection valve (12) disposed in the through hole (7) of a cylinder head (1). The respiratory hole (19) communicating with the exterior via the through hole of the cylinder head is formed at this protrusion. The outside opening (19a) of the respiratory hole is directed in the lateral direction or down from the lateral direction at a position away from the upper surface of the sealing member. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、気筒内直接噴射式内燃機関のシリンダヘッドに装着される燃料噴射弁のシール構造に関する。   The present invention relates to a seal structure for a fuel injection valve mounted on a cylinder head of an in-cylinder direct injection internal combustion engine.

従来、シリンダヘッドに装着した燃料噴射弁から気筒（燃焼室）内に直接燃料を噴射する気筒内直接噴射式内燃機関（単に直噴エンジンともいう）において、シリンダヘッド内を飛散するオイルがシリンダヘッドカバーと燃料噴射弁の間の隙間から外部へ漏れ出るのを防止するため、燃料噴射弁の上部にシール部材を装着することが知られている（例えば特許文献１参照）。   2. Description of the Related Art Conventionally, in a cylinder direct injection internal combustion engine (also referred to simply as a direct injection engine) in which fuel is directly injected into a cylinder (combustion chamber) from a fuel injection valve attached to the cylinder head, oil scattered in the cylinder head is covered with the cylinder head cover. In order to prevent leakage to the outside from the gap between the fuel injection valve and the fuel injection valve, it is known to install a seal member on the upper part of the fuel injection valve (see, for example, Patent Document 1).

特開２００２−２９５３４１（図１、図５）JP 2002-295341 A (FIGS. 1 and 5)

このように燃料噴射弁の上部にシール部材を装着した場合、例えばエンジン動作による温度上昇に伴ってシール部材によって封鎖された空間内の圧力が上昇すると、それによってシール部材が外向きに押され燃料噴射弁から外れたり、不所望に変形したりする恐れがある。これを防止するべくシール部材の固定を強固なものとすると、シール部材の脱落は防止できるものの、組み付け作業に多大な工数が必要となったり、燃料噴射弁に応力がかかって耐久性を損なったりする恐れがある。別の対策として、圧力上昇を防ぐための空気逃し孔（呼吸孔）をシール部材に形成することが考えられるが、そうすると、雨等によりエンジンの上面に溜まった水やメンテナンス時に燃料供給管を脱着する際に落下する燃料が、呼吸孔を通じてエンジン内部に侵入し得るという問題が生じる。   In this way, when the seal member is mounted on the upper part of the fuel injection valve, for example, when the pressure in the space sealed by the seal member rises as the temperature rises due to engine operation, the seal member is pushed outward and the fuel There is a possibility that it may come off from the injection valve or be deformed undesirably. If the sealing member is firmly fixed to prevent this, the sealing member can be prevented from falling off, but a large number of man-hours are required for the assembly work, or stress is applied to the fuel injection valve and the durability is impaired. There is a fear. As another measure, it is conceivable to form an air escape hole (breathing hole) in the seal member to prevent pressure rise. However, if this happens, the water accumulated on the upper surface of the engine due to rain or the fuel supply pipe will be removed during maintenance. In this case, there is a problem that the fuel that falls can enter the engine through the breathing hole.

本発明は上記のような従来の問題を解決するためのものであり、その主たる課題は、外部からの水の侵入防止などのシール機能を保ちつつ、シール部材によって封鎖された空間内の圧力上昇を抑制しシール部材の変形や脱落を防止することが可能な気筒内直接噴射式内燃機関の燃料噴射弁のシール構造を提供することである。   The present invention is for solving the conventional problems as described above, and the main problem is to increase the pressure in the space sealed by the seal member while maintaining a sealing function such as preventing water from entering from the outside. It is intended to provide a seal structure for a fuel injection valve of an in-cylinder direct injection internal combustion engine that can suppress the deformation and drop-off of the seal member.

本発明に基づくと、気筒内直接噴射式内燃機関の燃料噴射弁のシール構造であって、シリンダヘッド（１）の外側から燃焼室（２）内へと開かれた貫通孔（７）内に設けられた燃料噴射弁（１２）と、燃料噴射弁の上部に装着されたシール部材（１７）とを有し、シール部材はその上面から外向きに突出する突出部（２０）を備え、この突出部にシリンダヘッドの貫通孔と外気とを連通する呼吸孔（１９）が形成され、呼吸孔の外側開口（１９ａ）がシール部材の上面から離間した位置において横方向または横方向より下向きに向いていることを特徴とする燃料噴射弁のシール構造が提供される。   According to the present invention, there is provided a fuel injection valve seal structure for an in-cylinder direct injection internal combustion engine in a through hole (7) opened from the outside of the cylinder head (1) into the combustion chamber (2). A fuel injection valve (12) provided, and a seal member (17) mounted on the upper portion of the fuel injection valve, the seal member having a protrusion (20) protruding outward from the upper surface thereof, A breathing hole (19) for communicating the through hole of the cylinder head and the outside air is formed in the projecting portion, and the outer opening (19a) of the breathing hole is directed laterally or downward from the lateral direction at a position away from the upper surface of the seal member. A fuel injection valve sealing structure is provided.

本発明の好適実施例では、燃料噴射弁の上端部に燃料供給管（１６）との接続のためのフランジ（１４）が設けられており、シール部材の突出部はフランジの下方に配置される。燃料噴射弁の上端部がクランプ部材（１３）により保持される場合、シール部材の突出部をクランプ部材の下方に配置してもよい。   In the preferred embodiment of the present invention, a flange (14) for connection to the fuel supply pipe (16) is provided at the upper end of the fuel injection valve, and the protruding portion of the seal member is disposed below the flange. . When the upper end portion of the fuel injection valve is held by the clamp member (13), the protruding portion of the seal member may be disposed below the clamp member.

上記シール構造では、シール部材に呼吸孔が設けられていることからエンジン動作に伴い温度が上昇しても内部圧力の上昇を抑制することができるのでシール部材が不所望に押し出されることがなく、また、呼吸孔の外側開口がシール部材の上面から離間した位置に設けられることから、雨等によりシール部材の上面（またはエンジン上面）に水が溜まっても呼吸孔を通じて水がエンジン内部に侵入するのを防止することができ、良好なシール性を発揮することができる。更に、呼吸孔が横方向または横方向より下向きに向いているため上方から落下してくる水滴等が呼吸孔に侵入するのを効果的に防止することができる。   In the above seal structure, since the breathing hole is provided in the seal member, even if the temperature rises as the engine operates, the increase in internal pressure can be suppressed, so the seal member is not pushed out undesirably, Further, since the outer opening of the breathing hole is provided at a position separated from the upper surface of the seal member, even if water accumulates on the upper surface of the seal member (or the upper surface of the engine) due to rain or the like, water enters the engine through the breathing hole. Can be prevented, and good sealing performance can be exhibited. Further, since the breathing hole is oriented in the lateral direction or downward from the lateral direction, it is possible to effectively prevent water drops falling from above from entering the breathing hole.

シール部材の突出部がフランジまたはクランプ部材の下方に配置されるようにすると、フランジまたはクランプ部材が呼吸孔内への水滴の侵入を防止するカバーとして働くので、より一層効果的にエンジン内部への水の侵入を防止することができる。   If the protrusion of the seal member is arranged below the flange or the clamp member, the flange or the clamp member serves as a cover for preventing water droplets from entering the breathing hole, so that the inside of the engine can be more effectively applied. Intrusion of water can be prevented.

以下、本発明の実施の形態を、図面を参照しながら説明する。図１は本発明による気筒内直接噴射式内燃機関のシリンダヘッドに装着される燃料噴射弁の取付構造の一例を示す縦断面図である。シリンダヘッド１の外側から燃焼室２内に向けて、貫通孔７が開かれ、シリンダヘッド１の外側の、貫通孔７を囲撓する部分には環状突部８が一体に設けられている。環状突部８内には、筒状のスリーブ９が圧入され、その内孔が、貫通孔７の延長部分を画定している。シリンダヘッド１はアルミニウム合金からなり、その内部に、燃焼室２に向けて開かれた吸気ポート５及び排気ポート６が設けられ、それぞれ、公知の要領をもって、吸気弁３及び排気弁４により開閉されるようになっている。スリーブ９の上端は、シリンダヘッド１の上面を覆うシリンダヘッドカバー（またはカムケースカバー）１１の開口に突入し、リップシール１０によりシールされている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an example of a fuel injection valve mounting structure mounted on a cylinder head of an in-cylinder direct injection internal combustion engine according to the present invention. A through hole 7 is opened from the outside of the cylinder head 1 into the combustion chamber 2, and an annular protrusion 8 is integrally provided at a portion of the outside of the cylinder head 1 surrounding the through hole 7. A cylindrical sleeve 9 is press-fitted into the annular protrusion 8, and the inner hole defines an extended portion of the through hole 7. The cylinder head 1 is made of an aluminum alloy, and an intake port 5 and an exhaust port 6 opened toward the combustion chamber 2 are provided in the cylinder head 1. The cylinder head 1 is opened and closed by an intake valve 3 and an exhaust valve 4, respectively, in a known manner. It has become so. The upper end of the sleeve 9 enters an opening of a cylinder head cover (or cam case cover) 11 that covers the upper surface of the cylinder head 1 and is sealed by a lip seal 10.

燃料噴射弁１２は、スリーブ９の上端側から、貫通孔７内に挿入され、噴口を有するその先端が燃焼室２を臨むようになっている。スリーブ９を用いることによりシリンダヘッド１内において飛散するオイルが燃料噴射弁１２に付着するのを防止することができる。燃料噴射弁１２の基端（上端）側とスリーブ９の内周との間には、ゴム状のエラストマからなる環状のシール部材１７が設けられ、燃料噴射弁１２に至るリード線１８がシール部材１７を貫通している。また、シール部材１７には、燃料噴射弁１２と貫通孔７及びスリーブ９の内周との間の空室を外気と連通させる呼吸孔１９が設けられている。呼吸孔１９が設けられていることにより、エンジン動作に伴い温度が上昇しても、貫通孔７及びスリーブ９内の圧力が過度に上昇してシール部材１７が外部へと押し出されることがない。   The fuel injection valve 12 is inserted into the through-hole 7 from the upper end side of the sleeve 9, and the tip having an injection hole faces the combustion chamber 2. By using the sleeve 9, oil scattered in the cylinder head 1 can be prevented from adhering to the fuel injection valve 12. An annular seal member 17 made of rubber elastomer is provided between the base end (upper end) side of the fuel injection valve 12 and the inner periphery of the sleeve 9, and the lead wire 18 reaching the fuel injection valve 12 is connected to the seal member. 17 is penetrated. Further, the seal member 17 is provided with a breathing hole 19 for communicating an empty space between the fuel injection valve 12 and the through hole 7 and the inner periphery of the sleeve 9 with the outside air. By providing the breathing hole 19, even if the temperature rises as the engine operates, the pressure in the through-hole 7 and the sleeve 9 does not rise excessively and the seal member 17 is not pushed out.

燃料噴射弁１２の上端は外向フランジ（または接続フランジ）１４をなし、その上面に、燃料供給管１６に接続されたカバー部材１５が螺着され、図示外のポンプから送られた燃料が燃料噴射弁１２内に達するようになっている。燃料噴射弁１２の外向フランジ１４の直下には上向きの肩面２１（図３参照）が画定され、二股のクランプ部材１３が、外向フランジ１４の下側の小径部の両側から、この肩面２１に係合し、燃料噴射弁１２を貫通孔７内に不動に固定している。   The upper end of the fuel injection valve 12 forms an outward flange (or connection flange) 14, and a cover member 15 connected to the fuel supply pipe 16 is screwed onto the upper surface of the fuel injection valve 12 so that fuel sent from a pump (not shown) is injected into the fuel. It reaches into the valve 12. An upward shoulder surface 21 (see FIG. 3) is defined immediately below the outward flange 14 of the fuel injection valve 12, and a bifurcated clamp member 13 is provided from both sides of the small diameter portion on the lower side of the outward flange 14. The fuel injection valve 12 is fixedly fixed in the through hole 7.

図２は、図１に示した燃料噴射弁の取付構造の要部を示す部分拡大上面図であり、図３は本発明に基づく燃料噴射弁のシール構造をより詳細に示すべくクランプ部材１３及びカバー部材１５を省略した部分拡大縦断面図である。尚、図２では外向フランジ１４はカバー部材１５に隠れて図示されていないが、カバー部材１５と概ね同じ外形を有する。図３によく示されているように、本発明によると、シール部材１７に設けられた呼吸孔１９は、シール部材１７の上面から外向きに延出する突出部（呼吸管）２０に設けられ、その外側開口１９ａは突出部２０の上端部に位置している。即ち、呼吸孔１９は、シール部材１７の上面（またはシリンダヘッドカバー１１の上面）から離間した位置にて外気と連通している。これにより雨等によってシール部材１７の上面に水が溜まっても呼吸孔１９の開口１９ａは水面の上に位置することができるので、呼吸孔１９からエンジン内部に水が侵入するのを防止し良好なシール性を確保することができる。また図示されているように、本実施例では呼吸孔１９は、突出部２０の上部において横向きに曲がり、開口１９ａは横方向やや下向きに向いている。これにより、特に上方から落下してくる水滴等が呼吸孔１９に侵入するのを効果的に防止することができる。   FIG. 2 is a partially enlarged top view showing the main part of the fuel injection valve mounting structure shown in FIG. 1, and FIG. 3 shows the clamp member 13 and the fuel injection valve sealing structure according to the present invention in more detail. FIG. 6 is a partially enlarged longitudinal sectional view in which the cover member 15 is omitted. In FIG. 2, the outward flange 14 is not shown hidden behind the cover member 15, but has substantially the same outer shape as the cover member 15. As well shown in FIG. 3, according to the present invention, the breathing hole 19 provided in the seal member 17 is provided in the protrusion (breathing tube) 20 extending outward from the upper surface of the seal member 17. The outer opening 19 a is located at the upper end of the protrusion 20. That is, the breathing hole 19 communicates with the outside air at a position separated from the upper surface of the seal member 17 (or the upper surface of the cylinder head cover 11). Accordingly, even if water accumulates on the upper surface of the seal member 17 due to rain or the like, the opening 19a of the breathing hole 19 can be positioned on the water surface, so that water can be prevented from entering the engine from the breathing hole 19 and good. A good sealing property. Further, as shown in the figure, in this embodiment, the breathing hole 19 bends sideways at the upper part of the protruding portion 20, and the opening 19a faces slightly downward in the horizontal direction. Thereby, it is possible to effectively prevent a water drop or the like falling from above from entering the breathing hole 19 in particular.

図２において点線Ａで示すように、シール部材１７の呼吸孔１９（または突出部２０）はクランプ部材１３の二股の間において外向フランジ１４の下方に配置され、外向フランジ１４が呼吸孔１９への水滴等の侵入を防止するカバーとして働くようになっている。これにより、エンジン内部への水等の侵入をより一層効果的に防止することができる。クランプ部材１３の下方に十分なスペースがある場合には、図２において点線Ｂで示すように、呼吸孔１９をクランプ部材１３の下方に設け、同様の効果を奏することも可能である。   As shown by a dotted line A in FIG. 2, the breathing hole 19 (or the protrusion 20) of the seal member 17 is disposed below the outward flange 14 between the two forks of the clamp member 13, and the outward flange 14 is connected to the breathing hole 19. It works as a cover that prevents the intrusion of water droplets. Thereby, the penetration | invasion of the water etc. to the engine inside can be prevented much more effectively. When there is a sufficient space below the clamp member 13, as shown by a dotted line B in FIG. 2, a breathing hole 19 can be provided below the clamp member 13 to achieve the same effect.

以上、本発明を実施例に基づいて詳細に説明したが、これらの実施例はあくまでも例示であって本発明は実施例によって限定されるものではない。当業者であれば特許請求の範囲によって定められる本発明の技術的思想を逸脱することなく様々な変形若しくは変更が可能であることは言うまでもない。例えば、上記実施例では呼吸孔１９の開口１９ａは概ね横方向に向いているが、より下向きにすることもできる。   As mentioned above, although this invention was demonstrated in detail based on the Example, these Examples are an illustration to the last and this invention is not limited by an Example. It goes without saying that those skilled in the art can make various modifications or changes without departing from the technical idea of the present invention defined by the claims. For example, in the above-described embodiment, the opening 19a of the breathing hole 19 is oriented generally in the lateral direction, but can be made more downward.

本発明に係る気筒内直接噴射式内燃機関の燃料噴射弁のシール構造は、外部からの水の侵入防止などのシール機能を保ちつつ、シール部材で閉鎖された空間内の圧力上昇を抑制しシール部材の脱落や変形を防止するのに有用である。   The fuel injection valve sealing structure of a direct injection type internal combustion engine according to the present invention suppresses a pressure increase in a space closed by a sealing member while maintaining a sealing function such as preventing water from entering from the outside. This is useful for preventing the members from falling off or deforming.

本発明による気筒内直接噴射式内燃機関のシリンダヘッドに装着される燃料噴射弁の取付構造の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows an example of the attachment structure of the fuel injection valve with which the cylinder head of the direct injection type internal combustion engine by this invention is mounted | worn. 図１に示した燃料噴射弁の取付構造の要部を示す部分拡大上面図である。FIG. 2 is a partially enlarged top view showing a main part of the fuel injection valve mounting structure shown in FIG. 1. クランプ部材及びカバー部材を省略した図１の要部を拡大して示す部分拡大縦断面図である。It is the elements on larger scale which expand and show the principal part of Drawing 1 which omitted a clamp member and a cover member.

符号の説明Explanation of symbols

１ シリンダヘッド
２ 燃焼室
７ 貫通孔
９ スリーブ
１２ 燃料噴射弁
１３ クランプ部材
１４ 外向フランジ
１６ 燃料供給管
１７ シール部材
１８ リード線
１９ 呼吸孔
１９ａ 呼吸孔の開口
２０ 突出部（呼吸管） DESCRIPTION OF SYMBOLS 1 Cylinder head 2 Combustion chamber 7 Through-hole 9 Sleeve 12 Fuel injection valve 13 Clamp member 14 Outward flange 16 Fuel supply pipe 17 Seal member 18 Lead wire 19 Breathing hole 19a Breathing hole opening 20 Protruding part (breathing pipe)

Claims (4)

気筒内直接噴射式内燃機関の燃料噴射弁のシール構造であって、
シリンダヘッドの外側から燃焼室内へと開かれた貫通孔内に設けられた燃料噴射弁と、
前記燃料噴射弁の上部に装着されたシール部材とを有し、
前記シール部材はその上面から外向きに突出する突出部を備え、該突出部に前記シリンダヘッドの前記貫通孔と外気とを連通する呼吸孔が形成され、前記呼吸孔の外側開口が前記シール部材の上面から離間した位置において横方向または横方向より下向きに向いていることを特徴とする燃料噴射弁のシール構造。 A seal structure for a fuel injection valve of an in-cylinder direct injection internal combustion engine,
A fuel injection valve provided in a through hole opened from the outside of the cylinder head into the combustion chamber;
A seal member mounted on the upper part of the fuel injection valve;
The seal member includes a projecting portion projecting outward from an upper surface thereof, and a breathing hole is formed in the projecting portion to communicate the through hole of the cylinder head with outside air, and the outer opening of the breathing hole is the seal member. A fuel injection valve sealing structure characterized by being directed laterally or downward from the lateral direction at a position spaced from the upper surface of the fuel injection valve. 前記燃料噴射弁の上端部に燃料供給管との接続のためのフランジが設けられており、
前記シール部材の前記突出部が前記フランジの下方に配置されていることを特徴とする請求項１に記載の燃料噴射弁のシール構造。 A flange for connection with a fuel supply pipe is provided at the upper end of the fuel injection valve,
2. The fuel injection valve seal structure according to claim 1, wherein the protruding portion of the seal member is disposed below the flange. 3. 前記燃料噴射弁の上端部がクランプ部材により保持されており、
前記シール部材の前記突出部が前記クランプ部材の下方に配置されていることを特徴とする請求項１に記載の燃料噴射弁のシール構造。 The upper end of the fuel injection valve is held by a clamp member;
2. The fuel injection valve seal structure according to claim 1, wherein the protruding portion of the seal member is disposed below the clamp member. 前記シリンダヘッドの前記貫通孔中に筒状のスリーブが圧入され、前記燃料噴射弁は前記スリーブの上端側から前記貫通孔内に挿入されており、
前記シール部材は前記燃料噴射弁の前記上部の外周と前記スリーブの内周との間に装着されていることを特徴とする請求項１乃至請求項３のいずれかに記載の燃料噴射弁のシール構造。 A cylindrical sleeve is press-fitted into the through hole of the cylinder head, and the fuel injection valve is inserted into the through hole from the upper end side of the sleeve,
4. The fuel injection valve seal according to claim 1, wherein the seal member is mounted between an outer periphery of the upper portion of the fuel injection valve and an inner periphery of the sleeve. 5. Construction.
JP2003395369A 2003-11-26 2003-11-26 Fuel injection valve seal structure Expired - Fee Related JP3876248B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109026385A (en) * 2018-08-28 2018-12-18 河南柴油机重工有限责任公司 A kind of cylinder drain valve mounting structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697118A (en) * 2016-01-26 2016-06-22 重庆长安汽车股份有限公司 Sealing structure of turbo-charged direct injection engine exhaust system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109026385A (en) * 2018-08-28 2018-12-18 河南柴油机重工有限责任公司 A kind of cylinder drain valve mounting structure
CN109026385B (en) * 2018-08-28 2023-11-03 河南柴油机重工有限责任公司 Mounting structure of engine cylinder drain valve

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