JP5087138B2 - FUEL SYSTEM PROTECTION DEVICE AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH THE SAME - Google Patents

FUEL SYSTEM PROTECTION DEVICE AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH THE SAME Download PDF

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JP5087138B2
JP5087138B2 JP2010511853A JP2010511853A JP5087138B2 JP 5087138 B2 JP5087138 B2 JP 5087138B2 JP 2010511853 A JP2010511853 A JP 2010511853A JP 2010511853 A JP2010511853 A JP 2010511853A JP 5087138 B2 JP5087138 B2 JP 5087138B2
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fuel system
protection device
main body
system protection
fuel
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JPWO2009139081A1 (en
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聡 熊谷
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Aichi Machine Industry 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
    • 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
    • F02M2200/18—Fuel-injection apparatus having means for maintaining safety 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
    • F02M2200/185—Fuel-injection apparatus having means for maintaining safety not otherwise provided for means for improving crash safety

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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)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

本発明は、内燃機関へ燃料を供給する燃料系統部品を保護するための燃料系統保護装置、および、これを備える内燃機関に関するものである。   The present invention relates to a fuel system protection device for protecting a fuel system component that supplies fuel to an internal combustion engine, and an internal combustion engine including the same.

従来、この種の燃料系統保護装置としては、例えば特許文献１に開示されているように、車両衝突時にインジェクタや燃料パイプなどの燃料系統部品にエンジンルーム内の部品が衝突するのを防ぐために、燃料系統部品を覆い保護するためのプロテクタを備えるものが提案されている。
この燃料系統保護装置では、プロテクタを板材により箱型に立体成形することにより、軽量化とともに強度が向上するものとしている。
特開２００１−３１７４３６号公報 Conventionally, as this type of fuel system protection device, for example, as disclosed in Patent Document 1, in order to prevent parts in the engine room from colliding with fuel system parts such as an injector and a fuel pipe at the time of a vehicle collision, Some have been provided with a protector for covering and protecting the fuel system components.
In this fuel system protection device, the protector is three-dimensionally formed into a box shape with a plate material, thereby reducing the weight and improving the strength.
JP 2001-317436 A

しかしながら、上記した燃料系統保護装置では、衝突エネルギーをプロテクタで吸収する構造であるため、エンジンルーム内の部品が過大な衝突エネルギーをもってプロテクタに衝突した場合、プロテクタが大きく変形してしまい燃料系統部品を良好に保護できない場合が生ずるという問題点があった。   However, since the above-described fuel system protection device has a structure in which the collision energy is absorbed by the protector, when a component in the engine compartment collides with the protector with excessive collision energy, the protector is greatly deformed and the fuel system component is There was a problem that the case where it was not able to protect well occurred.

本発明は、重量増加を抑えながら燃料系統部品を確実に保護する構造を簡易に確保することを目的の１つとし、この目的の少なくとも一部を達成するために以下の手段を採った。
本発明の燃料系統保護装置は、内燃機関へ燃料を供給するための燃料管を含む燃料系統部品を保護するための燃料系統保護装置であって、
前記燃料系統部品の少なくとも一部を覆う被覆部材と、
車両衝突の際に前記燃料系統部品に衝突しようとする周辺部品を破壊可能なように前記被覆部材の一部を切り起こすことにより前記燃料系統部品側とは反対側に突出形成させた突出部と、
を備え、
前記被覆部材は、前記内燃機関に取り付けるための取付部と、前記燃料系統部品を覆う本体部とを有してなり、
前記取付部は、前記本体部に対して破断しやすい態様で該本体部に設けられてなり、
前記本体部または前記取付部には、前記取付部の破断方向を規制する規制部が形成されてなることを要旨とする。
本発明の燃料系統保護装置によれば、燃料系統部品の少なくとも一部を覆う被覆部材により車両衝突の際の周辺部品と燃料系統部品との衝突を良好に保護するとともに、被覆部材の一部を切り起こすことにより燃料系統部品側とは反対側に突出形成した突出部により燃料系統部品に衝突しようとする周辺部品を破壊する。即ち、過大な衝突エネルギーをもって周辺部品が燃料系統保護装置に衝突したとしても、衝突エネルギーの一部は破壊エネルギーとして吸収するから燃料系部品を確実に保護できる。しかも、被覆部材の一部を切り起こすだけだから、重量増加を招くことなく、燃料系統部品を確実に保護する構造を簡易に確保できる。
また、衝突エネルギーを、取付部と本体部との破壊エネルギーとして吸収できるから、燃料系統部品をより確実に保護できる。
また、取付部の本体部から破断する方向を規制することができる。この結果、燃料系統部品をより確実に保護することができる。
また、本発明の燃料系統保護装置において、前記規制部は、少なくとも前記取付部の破断の際に前記取付部をガイド可能に該取付部を挟み込むよう前記本体部の一部を切り起こして形成した一対のガイド壁とすることもできる。
こうすれば、本体部の一部を切り起こすだけだから、規制部を簡易に確保することができる。
また、本発明の燃料系統保護装置において、前記取付部は、前記本体部に対して重合して接合されてなるものとすることもできる。
こうすれば、取付部を本体部に対して重合して接合するだけだから、本体部に対して破断しやすい構造を簡易に確保することができる。
また、本発明の燃料系統保護装置において、前記取付部は、前記本体部に対してスポット溶接により接合されてなるものとすることもできる。
こうすれば、取付部を本体部に対してスポット溶接により接合するだけだから、本体部に対して破断しやすい構造をより簡易に確保することができる。
また、本発明の燃料系統保護装置において、前記取付部と前記本体部とは、一体的に折曲形成されてなり、折曲部の少なくとも一部が他の部分に比して薄肉化されてなる構造とすることもできる。
こうすれば、取付部と本体部とを一体的に折曲形成して、折曲部の少なくとも一部に他の部分よりも薄肉化した部分を設けるだけだから、本体部に対して破断しやすい構造を簡易に確保することができる。
また、本発明の燃料系統保護装置において、前記本体部には、入力が入った際に前記内燃機関に当接するよう該内燃機関に対して所定距離隔てて対向する当接片部が形成されてなり、該当接片部は、前記本体部の一部を切り起こすことにより形成することもできる。
こうすれば、入力が入った際に当接片部が内燃機関に当接するから、燃料系統部品をより確実に保護することができる。しかも本体部の一部を切り起こすだけだから当接片部を簡易に確保することができる。
また、本発明の内燃機関は、燃焼室を形成するシリンダヘッドと、該シリンダヘッドの上部に取り付けられるヘッドカバーと、前記燃焼室に空気を供給する吸気系部品と、少なくとも燃料管が前記シリンダヘッドに取り付けられる燃料系統部品と、前記吸気系部品と前記燃料系統部品との間に配設され前記ヘッドカバーを介して前記シリンダヘッドに取り付けられる請求項１乃至請求項６何れかに記載の燃料系統保護装置と、を備えることを要旨とする。
本発明の内燃機関では、上述した各態様の何れかの本発明の燃料系統保護装置を備えるから、本発明の燃料系統保護装置が奏する効果と同様の効果、例えば燃料系統部品に周辺部品としての吸気系部品が衝突する際の衝突エネルギーの一部を破壊エネルギーとして吸収して、燃料系統部品を確実に保護する構造を、重量増加を招くことなく簡易に確保できる効果などを奏することができる。 One object of the present invention is to simply secure a structure that reliably protects fuel system components while suppressing an increase in weight, and the following measures have been taken to achieve at least a part of this object.
A fuel system protection device of the present invention is a fuel system protection device for protecting fuel system components including a fuel pipe for supplying fuel to an internal combustion engine,
A covering member covering at least a part of the fuel system component;
Protrusions is protruded opposite to the fuel system component side by cutting and raising a portion of the covering member peripheral components to allow destruction to be impinging on the fuel system components in the event of a vehicle collision When,
Equipped with a,
The covering member includes an attachment portion for attachment to the internal combustion engine, and a main body portion that covers the fuel system component,
The mounting portion is provided on the main body in a form that is easy to break with respect to the main body.
The gist of the invention is that the main body part or the attaching part is formed with a restricting part for restricting the breaking direction of the attaching part .
According to the fuel system protection device of the present invention, together with good protection of the collision between the peripheral part and the fuel system component during a vehicle collision by covering at least a portion covering member of the fuel system component, a part of the covering member The peripheral parts that are about to collide with the fuel system parts are destroyed by the protruding part that is formed to protrude on the opposite side to the fuel system part side. That is, even if a peripheral component collides with the fuel system protection device with excessive collision energy, a part of the collision energy is absorbed as destruction energy, so that the fuel system component can be reliably protected. In addition, since only a part of the covering member is cut up, a structure that reliably protects the fuel system components can be easily secured without increasing the weight.
Further, since the collision energy can be absorbed as the breaking energy between the attachment portion and the main body portion, the fuel system components can be more reliably protected.
Moreover, the direction which fractures | ruptures from the main-body part of an attaching part can be controlled. As a result, the fuel system components can be protected more reliably.
Further, in the fuel system protection device of the present invention, the restriction portion is formed by cutting and raising a part of the main body portion so as to sandwich the attachment portion so that the attachment portion can be guided at least when the attachment portion is broken. It can also be a pair of guide walls.
In this way, since only a part of the main body is raised, the restricting portion can be easily secured.
In the fuel system protection device of the present invention, the mounting portion may be formed by being superposed on and joined to the main body portion.
In this case, since the attachment portion is only polymerized and joined to the main body portion, a structure that is easily broken with respect to the main body portion can be easily ensured.
In the fuel system protection device of the present invention, the attachment portion may be joined to the main body portion by spot welding.
In this case, since the attachment portion is simply joined to the main body portion by spot welding, it is possible to more easily ensure a structure that is easily broken with respect to the main body portion.
Further, in the fuel system protection device of the present invention, the attachment portion and the main body portion are integrally bent, and at least a part of the bending portion is thinner than other portions. It can also be set as the structure which becomes.
In this way, the attachment part and the main body part are bent integrally, and at least a part of the bent part is provided with a thinner part than the other parts, so that the main body part is easily broken. The structure can be easily secured.
In the fuel system protection device of the present invention, the main body portion is formed with a contact piece portion facing the internal combustion engine at a predetermined distance so as to contact the internal combustion engine when an input is input. Thus, the corresponding piece part can be formed by cutting and raising a part of the main body part.
In this way, when the input is made, the contact piece comes into contact with the internal combustion engine, so that the fuel system components can be more reliably protected. And since only a part of a main-body part is raised, a contact piece part can be ensured simply.
The internal combustion engine of the present invention includes a cylinder head that forms a combustion chamber, a head cover that is attached to an upper portion of the cylinder head, an intake system component that supplies air to the combustion chamber, and at least a fuel pipe to the cylinder head. The fuel system protection device according to any one of claims 1 to 6 , wherein the fuel system protection device is disposed between the fuel system component to be attached and the intake system component and the fuel system component, and is attached to the cylinder head via the head cover. And a gist of the above.
Since the internal combustion engine of the present invention includes the fuel system protection device of the present invention according to any one of the above-described aspects, the same effect as that produced by the fuel system protection device of the present invention, for example, a fuel system component as a peripheral component It is possible to obtain an effect of easily securing a structure that absorbs part of the collision energy when the intake system component collides as destruction energy and reliably protects the fuel system component without causing an increase in weight.

図１は、燃料系統保護装置を取り付けた内燃機関の概略構成図である。
図２は、第１実施例の燃料系統保護装置の拡大斜視構成図である。
図３は、図２の燃料系統保護装置の取付け状態の拡大図である。
図４は、第２実施例の燃料系統保護装置の拡大斜視図である。
図５は、第２実施例の燃料系統保護装置の取付け状態の拡大図である。
図６は、第３実施例の燃料系統保護装置の拡大斜視図である。
図７は、第４実施例の燃料系統保護装置の拡大斜視図である。
図８は、第４実施例の燃料系統保護装置の取付け状態の拡大図である。 FIG. 1 is a schematic configuration diagram of an internal combustion engine equipped with a fuel system protection device.
FIG. 2 is an enlarged perspective configuration diagram of the fuel system protection device of the first embodiment.
FIG. 3 is an enlarged view of the attached state of the fuel system protection device of FIG.
FIG. 4 is an enlarged perspective view of the fuel system protection device of the second embodiment.
FIG. 5 is an enlarged view of the attached state of the fuel system protection device of the second embodiment.
FIG. 6 is an enlarged perspective view of the fuel system protection device of the third embodiment.
FIG. 7 is an enlarged perspective view of the fuel system protection device of the fourth embodiment.
FIG. 8 is an enlarged view of the attached state of the fuel system protection device of the fourth embodiment.

次に、本発明を実施するための最良の形態を実施例を用いて説明する。   Next, the best mode for carrying out the present invention will be described using examples.

図１は、内燃機関の概略構成図であり、内燃機関１は、シリンダブロック２上にシリンダヘッド３が取り付けられ、シリンダヘッド３の上部にはヘッドカバー４が取り付けられている。また、シリンダブロック２の下部にはオイルパン５が設けられている。
シリンダブロック２内にはピストン６が配置され、冷却水が通るウォータージャケット２ａが形成されている。
また、シリンダヘッド３内に形成された燃焼室７の上面には吸気バルブ８ａと排気バルブ８ｂが配設されており、吸気バルブ８ａは、吸気側カムシャフトに設けられたカム９ａの回転によってバルブリフター１０ａを介して開閉されるように構成されている。また、排気バルブ８ｂも、排気側カムシャフトに設けられたカム９ｂの回転によりバルブリフター１０ｂを介して開閉されるように構成されている。
シリンダヘッド３内の吸気バルブ８ａ側には吸気路１１が形成されており、この吸気路１１に連通状に、吸気系部品である樹脂製のインテークマニホールド１２がシリンダヘッド３に取り付けられ、インテークマニホールド１２から吸気路１１を通り燃焼室７に空気が供給されるように構成されている。また、吸気路１１内に燃料を供給する燃料管１３とインジェクタ１４を含む燃料系統部品がシリンダヘッド３に取り付けられている。
この燃料系統部品の燃料管１３とインテークマニホールド１２の間には燃料系統保護装置１５が配置されており、この燃料系統保護装置１５は、ヘッドカバー４を介してシリンダヘッド３に取り付けられている。
なお、燃料系統保護装置１５の拡大斜視図を図２に示し、図３では燃料系統保護装置１５の取付け状態の要部拡大図を示す。
燃料系統保護装置１５は、燃料管１３およびインジェクタ１４を含む燃料系統部品の一部を覆うことのできる略Ｌ字状断面の被覆部材１６で構成されており、この被覆部材１６は、本体部１７と、本体部１７に突出状に取り付けられた３個の取付部１８，１８，１８で構成されている。
本体部１７は、燃料管１３の上面側を覆うことのできる略水平な上面片１７ａと、この上面片１７ａのインテークマニホールド１２側の端部から湾曲して下向きに垂下された垂下片１７ｂと、上面片１７ａから垂下片１７ｂと反対側に突出した延出片１７ｃを備え、この延出片１７ｃは水平面内で間隔をおいて３個突出されており、それぞれの延出片１７ｃに、前記取付部１８が重ね合わせ状にしてスポット溶接で接合されている。
各取付部１８には、ヘッドカバー４をシリンダヘッド３に取り付けるためのボルト２２を通すことのできるボルト孔１８ａが上下に貫通形成されている。
また、上面片１７ａからインテークマニホールド１２側へ向かって略水平に突出する突出部１９が、本体部１７の垂下片１７ｂから切り起こして形成されている。
また、本体部１７の上面片１７ａの左右端側には、下方側へ切り起こして垂下状に当接片部２０ａ，２０ｂが一対形成されている。この当接片部２０ａ，２０ｂは、垂下片１７ｂが形成された平面に対して直交する平面内に形成されており、ヘッドカバー４に対して所定の間隙を隔てて対向している。
また、本体部１７の各延出片１７ｃの幅方向左右端には切り起こし状に一対のガイド壁２１，２１が立ち上げ形成されており、この一対のガイド壁２１，２１内に各取付部１８が配置されて、取付部１８の幅方向左右端をこの一対のガイド壁２１，２１で挟み込んでいる。
この一対のガイド壁２１，２１は、延出片１７ｃに重合されてスポット溶接された取付部１８が、車両衝突時に外れる時に、取付部１８が横方向に向かずに真っ直ぐに外れるように、取付部１８の破断方向を規制するものである。
また、前記突出部１９は車両衝突時に、吸気系部品であるインテークマニホールド１２を破壊するために形成されたものである。
また、前記一対の当接片部２０ａ，２０ｂは、車両衝突時にヘッドカバー４に当接して、燃料系統保護装置１５が燃料管１３等の燃料系統部品へ当接するのを防ぐために設けられたものであり、図３に示すように、燃料系統保護装置１５の取付け状態において、当接片部２０ａ，２０ｂとヘッドカバー４間の距離ａは、燃料管１３と垂下片１７ｂ間の距離ｂよりも短くなるように設定されており、垂下片１７ｂが燃料管１３に当接する前に当接片部２０ａ，２０ｂがヘッドカバー４に当接して、燃料管１３等の燃料系統部品を確実に保護できるものである。
このように構成された燃料系統保護装置１５の作用を説明する。
燃料系統保護装置１５が取り付けられた状態において、車両衝突等の際に衝突エネルギーがインテークマニホールド１２側から内燃機関１側へ加わると、インテークマニホールド１２が突出部１９に衝突し、突出部１９により樹脂製のインテークマニホールド１２が破壊される。この時、衝突エネルギーの一部を破壊エネルギーとして良好に吸収することができ、また、本体部１７の延出片１７ｃにスポット溶接で接合されている３個の取付部１８が衝突エネルギーにより本体部１７から破断され、衝突エネルギーを取付部１８の破壊エネルギーとして吸収することができる。なお、この取付部１８が破断する際には、一対のガイド壁２１，２１により、横方向にずれることなく真っ直ぐに取付部１８が破断されるため、確実に衝突エネルギーを吸収できるものである。
なお、更に大きな衝突エネルギーが加わった際には、一対の当接片部２０ａ，２０ｂがヘッドカバー４に当接することで、燃料管１３等の燃料系統部品に燃料系統保護装置１５が衝突することが防がれて、燃料管１３等の燃料系統部品を確実に保護できるものとなる。
なお、燃料系統保護装置１５の突出部１９および当接片部２０ａ，２０ｂは、本体部１７の一部を切り起こして形成させることができ、重量増加を招くことがない。同様にガイド壁２１，２１も本体部１７の一部を切り起こすだけであるため簡易に形成させることができ、また、各取付部１８はスポット溶接で接合するから、燃料系統保護装置１５は比較的容易に形成させることができる。 FIG. 1 is a schematic configuration diagram of an internal combustion engine. In the internal combustion engine 1, a cylinder head 3 is mounted on a cylinder block 2, and a head cover 4 is mounted on the cylinder head 3. An oil pan 5 is provided at the lower part of the cylinder block 2.
A piston 6 is disposed in the cylinder block 2, and a water jacket 2a through which cooling water passes is formed.
An intake valve 8a and an exhaust valve 8b are disposed on the upper surface of the combustion chamber 7 formed in the cylinder head 3. The intake valve 8a is driven by rotation of a cam 9a provided on the intake side camshaft. It is configured to be opened and closed via a lifter 10a. The exhaust valve 8b is also configured to be opened and closed via a valve lifter 10b by rotation of a cam 9b provided on the exhaust side camshaft.
An intake passage 11 is formed on the side of the intake valve 8 a in the cylinder head 3. A resin intake manifold 12, which is an intake system component, is attached to the cylinder head 3 so as to communicate with the intake passage 11. The air is supplied from 12 through the intake passage 11 to the combustion chamber 7. A fuel system component including a fuel pipe 13 for supplying fuel into the intake passage 11 and an injector 14 is attached to the cylinder head 3.
A fuel system protection device 15 is disposed between the fuel pipe 13 of the fuel system component and the intake manifold 12, and the fuel system protection device 15 is attached to the cylinder head 3 via the head cover 4.
An enlarged perspective view of the fuel system protection device 15 is shown in FIG. 2, and FIG.
The fuel system protection device 15 includes a covering member 16 having a substantially L-shaped cross section that can cover a part of fuel system parts including the fuel pipe 13 and the injector 14, and the covering member 16 includes a main body portion 17. And three attachment portions 18, 18, 18 attached to the main body portion 17 in a projecting manner.
The main body 17 has a substantially horizontal upper surface piece 17a that can cover the upper surface side of the fuel pipe 13, and a drooping piece 17b that is bent downward from the end portion of the upper surface piece 17a on the intake manifold 12 side. There are extended pieces 17c protruding from the upper surface piece 17a to the opposite side of the hanging piece 17b, and three extended pieces 17c are protruded at intervals in a horizontal plane, and the above-mentioned attachment pieces 17c are attached to the respective extended pieces 17c. The portions 18 are overlapped and joined by spot welding.
Bolt holes 18 a through which bolts 22 for attaching the head cover 4 to the cylinder head 3 can be passed are formed vertically through each attachment portion 18.
Further, a protruding portion 19 that protrudes substantially horizontally from the upper surface piece 17 a toward the intake manifold 12 side is formed by being raised from the hanging piece 17 b of the main body portion 17.
A pair of contact piece portions 20a and 20b are formed on the left and right ends of the upper surface piece 17a of the main body 17 so as to be cut and raised downward. The contact piece portions 20a and 20b are formed in a plane orthogonal to the plane on which the hanging piece 17b is formed, and face the head cover 4 with a predetermined gap.
In addition, a pair of guide walls 21 and 21 are formed upright and cut at the left and right ends in the width direction of each extending piece 17 c of the main body portion 17, and each mounting portion is provided in the pair of guide walls 21 and 21. 18 is arranged, and the left and right ends in the width direction of the mounting portion 18 are sandwiched between the pair of guide walls 21 and 21.
The pair of guide walls 21 and 21 are mounted so that the mounting portion 18 overlapped with the extension piece 17c and spot-welded is removed without being directed in the lateral direction when the mounting portion 18 is removed in the event of a vehicle collision. The breaking direction of the portion 18 is regulated.
The protrusion 19 is formed to destroy the intake manifold 12 which is an intake system component in the event of a vehicle collision.
The pair of contact piece portions 20a and 20b are provided to contact the head cover 4 at the time of a vehicle collision and prevent the fuel system protection device 15 from contacting the fuel system parts such as the fuel pipe 13. As shown in FIG. 3, when the fuel system protection device 15 is attached, the distance a between the contact piece portions 20a and 20b and the head cover 4 is shorter than the distance b between the fuel pipe 13 and the hanging piece 17b. The abutment pieces 20a and 20b abut against the head cover 4 before the drooping piece 17b abuts on the fuel pipe 13, so that fuel system components such as the fuel pipe 13 can be reliably protected. .
The operation of the fuel system protection device 15 configured as above will be described.
When the collision energy is applied from the intake manifold 12 side to the internal combustion engine 1 side at the time of a vehicle collision or the like in a state where the fuel system protection device 15 is attached, the intake manifold 12 collides with the protruding portion 19 and the protruding portion 19 The made intake manifold 12 is destroyed. At this time, a part of the collision energy can be satisfactorily absorbed as the breaking energy, and the three attachment parts 18 joined to the extending piece 17c of the main body part 17c by spot welding cause the main body part by the collision energy. 17 is broken, and the collision energy can be absorbed as the breaking energy of the mounting portion 18. In addition, when this attachment part 18 fractures | ruptures, since the attachment part 18 is fracture | ruptured straight without shifting | deviating to a horizontal direction by a pair of guide walls 21 and 21, collision energy can be absorbed reliably.
When a larger amount of collision energy is applied, the fuel system protection device 15 may collide with fuel system components such as the fuel pipe 13 by the pair of contact pieces 20a and 20b contacting the head cover 4. This prevents the fuel system parts such as the fuel pipe 13 from being protected.
In addition, the protrusion part 19 and the contact piece parts 20a and 20b of the fuel system protection device 15 can be formed by cutting and raising a part of the main body part 17 without causing an increase in weight. Similarly, the guide walls 21 and 21 can be easily formed because only a part of the main body portion 17 is raised, and the mounting portions 18 are joined by spot welding, so that the fuel system protection device 15 is compared. Can be formed easily.

次に、燃料系統保護装置の第２実施例を図４の斜視図で、また、図５の取付け状態の拡大構成図で示す。
第２実施例では、本体部１７の３本の延出片１７ｃ，１７ｃ，１７ｃにそれぞれ重合されてスポット溶接で接合される取付部１８の形状を変更したものである。
本例では、延出片１７ｃ上に重合される取付部１８の幅方向左右端に、取付部１８から一体状に垂下させて左右一対のガイド壁１８ｂ，１８ｂを形成したものであり、本体部の延出片１７ｃにこのような取付部１８を重合させて接合すると、取付部１８から一体形成されたガイド壁１８ｂ，１８ｂが本体部の延出片１７ｃの幅方向左右側に垂下され、左右のガイド壁１８ｂ，１８ｂ間に延出片１７ｃが挟み込まれる。
このような取付部１８に一体形成されたガイド壁１８ｂ，１８ｂによっても、取付部１８の本体部１７からの破断方向を規制することができ、破断時に取付部１８は横方向に向かずに真っ直ぐに破断され、車両衝突の際の衝突エネルギーを取付部１８の破壊エネルギーとして吸収することができるものである。
なお、燃料系統保護装置１５の、その他の構成は、図２の第１実施例のものと同様であり、作用効果も第１実施例のものと同様である。即ち、燃料系統保護装置１５が取り付けられた状態において、車両衝突等の際に衝突エネルギーがインテークマニホールド１２側から内燃機関１側へ加わると、インテークマニホールド１２が突出部１９に衝突して破壊され、これにより衝突エネルギーの一部を破壊エネルギーとして良好に吸収することができ、また、３個の取付部１８が衝突エネルギーにより本体部１７から破断して外れ、衝突エネルギーを破壊エネルギーとして吸収することができる。
さらに、燃料系統保護装置１５の取付け状態において、図５に示すように、当接片部２０ａ，２０ｂとヘッドカバー４間の距離ａを、燃料管１３と垂下片１７ｂ間の距離ｂよりも短くなるように設定しているから、大きな衝撃エネルギーが加わったときでも、垂下片１７ｂが燃料管１３に当接する前に当接片部２０ａ，２０ｂがヘッドカバー４に当接し、燃料管１３等の燃料系統部品に燃料系統保護装置１５が衝突することが防がれて、燃料管１３等の燃料系統部品を確実に保護できるものとなる。 Next, a second embodiment of the fuel system protection device is shown in the perspective view of FIG. 4, and in the enlarged configuration diagram of the attached state of FIG.
In the second embodiment, the shape of the mounting portion 18 that is superposed on the three extending pieces 17c, 17c, and 17c of the main body portion 17 and joined by spot welding is changed.
In this example, a pair of left and right guide walls 18b and 18b are formed by being integrally suspended from the mounting portion 18 on the left and right ends in the width direction of the mounting portion 18 superimposed on the extending piece 17c. When the mounting portion 18 is overlapped and joined to the extending piece 17c, the guide walls 18b and 18b integrally formed from the mounting portion 18 are suspended to the left and right sides in the width direction of the extending piece 17c of the main body portion, and left and right The extending piece 17c is sandwiched between the guide walls 18b and 18b.
The guide walls 18b, 18b formed integrally with the mounting portion 18 can also regulate the breaking direction of the mounting portion 18 from the main body portion 17, and when broken, the mounting portion 18 does not face in the lateral direction and is straight. The collision energy at the time of the vehicle collision can be absorbed as the breaking energy of the mounting portion 18.
The other configuration of the fuel system protection device 15 is the same as that of the first embodiment shown in FIG. 2, and the operational effects are also the same as those of the first embodiment. That is, in a state where the fuel system protection device 15 is attached, when collision energy is applied from the intake manifold 12 side to the internal combustion engine 1 side in the event of a vehicle collision or the like, the intake manifold 12 collides with the protruding portion 19 and is destroyed. As a result, a part of the collision energy can be favorably absorbed as the breaking energy, and the three attachment portions 18 can be separated from the main body portion 17 due to the collision energy, and the collision energy can be absorbed as the breaking energy. it can.
Further, when the fuel system protection device 15 is attached, as shown in FIG. 5, the distance a between the contact pieces 20a, 20b and the head cover 4 is shorter than the distance b between the fuel pipe 13 and the hanging piece 17b. Therefore, even when a large impact energy is applied, the contact pieces 20a and 20b come into contact with the head cover 4 before the hanging piece 17b comes into contact with the fuel pipe 13, and the fuel system such as the fuel pipe 13 and the like. The fuel system protection device 15 is prevented from colliding with the parts, and the fuel system parts such as the fuel pipe 13 can be reliably protected.

次に、図６に拡大斜視図で示す燃料系統保護装置１５は、更なる変形例を示すものであり、図６では、一対の当接片部２０ａ，２０ｂを、本体部１７の上面片１７ａの左右両端側に垂下状に折り曲げ形成したものである。
その他の構成は、図２の第１実施例のものと同様であり、このような燃料系統保護装置１５においても、重量増加を招くことなく燃料系統部品を確実に保護できるものである。 Next, the fuel system protection device 15 shown in an enlarged perspective view in FIG. 6 shows a further modification. In FIG. 6, the pair of abutting piece portions 20a and 20b are replaced with the upper surface piece 17a of the main body portion 17. Is formed in a bent shape on both right and left ends.
The other configuration is the same as that of the first embodiment of FIG. 2, and the fuel system protection device 15 can reliably protect the fuel system components without increasing the weight.

次に、図７の拡大斜視図で、また図８の取付け状態の拡大構成図で示すものは、第４実施例であり、第４実施例においては、取付部を別体のものとせず、本体部１７に一体形成したものである。
即ち、図７および図８に示すように、本体部１７の３本の延出片１７ｃ，１７ｃ，１７ｃの先端には、それぞれ上方側へ立ち上げて折曲部１７ｄが一体形成されており、折曲部１７ｄの上端から更に水平方向へ延出片１７ｃと平行状に延出して取付部１７ｅが一体形成されており、取付部１７ｅにはヘッドカバー固定用のボルト２２を通すことのできるボルト孔１７ｆが上下に貫通形成されている。
この各取付部１７ｅの根元にある折曲部１７ｄには、本体部１７側から切り込み状に破断用溝２３が幅方向全域に亘り形成されており、この破断用溝２３が形成されたことにより折曲部１７ｄの一部は他の部分に比べて薄肉状となり、車両衝突時の衝突エネルギーを受けると、この破断用溝２３の部分で取付部１７ｅが破断されて、本体部１７から外れるように構成したものである。
その他の構成は、第１実施例の図２のものと同様であり、作用効果も第１実施例のものと同様である。即ち、燃料系統保護装置１５が取り付けられた状態において、車両衝突等の際に衝突エネルギーがインテークマニホールド１２側から内燃機関１側へ加わると、インテークマニホールド１２が突出部１９に衝突して破壊され、これにより衝突エネルギーの一部を破壊エネルギーとして良好に吸収することができ、また、取付部１７ｅが衝突エネルギーにより本体部１７から破断されて、衝突エネルギーを破壊エネルギーとして吸収することができる。
さらに、燃料系統保護装置１５の取付け状態において、図８に示すように、当接片部２０ａ，２０ｂとヘッドカバー４間の距離ａを、燃料管１３と垂下片１７ｂ間の距離ｂよりも短くなるように設定しているから、大きな衝撃エネルギーが加わったときでも、垂下片１７ｂが燃料管１３に当接する前に当接片部２０ａ，２０ｂがヘッドカバー４に当接し、燃料管１３等の燃料系統部品に燃料系統保護装置１５が衝突することが防がれて、燃料管１３等の燃料系統部品を確実に保護できるものとなる。なお、このような燃料系統保護装置１５は、重量増加を招くことなく燃料系統部品を確実に保護できるものである。
以上、本発明の実施の形態について実施例を用いて説明したが、本発明はこうした実施例に限定されるものではなく、本発明の要旨を逸脱しない範囲内において、種々なる形態で実施し得ることは勿論である。 Next, what is shown in the enlarged perspective view of FIG. 7 and the enlarged configuration diagram of the attached state of FIG. 8 is the fourth embodiment, and in the fourth embodiment, the attaching portion is not a separate one. It is formed integrally with the main body portion 17.
That is, as shown in FIG. 7 and FIG. 8, the bent portions 17d are integrally formed at the tips of the three extending pieces 17c, 17c, 17c of the main body portion 17 so as to rise upward. A mounting portion 17e is integrally formed extending from the upper end of the bent portion 17d in the horizontal direction in parallel with the extending piece 17c, and a bolt hole through which the head cover fixing bolt 22 can be passed. 17f is formed penetrating up and down.
In the bent portion 17d at the base of each mounting portion 17e, a breaking groove 23 is formed in a cut shape from the main body portion 17 side over the entire width direction, and this breaking groove 23 is formed. A part of the bent portion 17d is thinner than the other portions, and when receiving the collision energy at the time of the vehicle collision, the attachment portion 17e is broken at the portion of the breaking groove 23 so as to be detached from the main body portion 17. It is configured.
Other configurations are the same as those of the first embodiment shown in FIG. 2, and the operational effects are also the same as those of the first embodiment. That is, in a state where the fuel system protection device 15 is attached, when collision energy is applied from the intake manifold 12 side to the internal combustion engine 1 side in the event of a vehicle collision or the like, the intake manifold 12 collides with the protruding portion 19 and is destroyed. Accordingly, a part of the collision energy can be favorably absorbed as the breaking energy, and the attachment portion 17e is broken from the main body portion 17 by the collision energy, and the collision energy can be absorbed as the breaking energy.
Further, when the fuel system protection device 15 is attached, as shown in FIG. 8, the distance a between the contact pieces 20a, 20b and the head cover 4 is shorter than the distance b between the fuel pipe 13 and the hanging piece 17b. Therefore, even when a large impact energy is applied, the contact pieces 20a and 20b come into contact with the head cover 4 before the hanging piece 17b comes into contact with the fuel pipe 13, and the fuel system such as the fuel pipe 13 and the like. The fuel system protection device 15 is prevented from colliding with the parts, and the fuel system parts such as the fuel pipe 13 can be reliably protected. Such a fuel system protection device 15 can reliably protect the fuel system components without causing an increase in weight.
As mentioned above, although embodiment of this invention was described using the Example, this invention is not limited to such an Example, In the range which does not deviate from the summary of this invention, it can implement with a various form. Of course.

Claims (7)

内燃機関へ燃料を供給するための燃料管を含む燃料系統部品を保護するための燃料系統保護装置であって、
前記燃料系統部品の少なくとも一部を覆う被覆部材と、
車両衝突の際に前記燃料系統部品に衝突しようとする周辺部品を破壊可能なように前記被覆部材の一部を切り起こすことにより前記燃料系統部品側とは反対側に突出形成させた突出部と、
を備え、
前記被覆部材は、前記内燃機関に取り付けるための取付部と、前記燃料系統部品を覆う本体部とを有してなり、
前記取付部は、前記本体部に対して破断しやすい態様で該本体部に設けられてなり、
前記本体部または前記取付部には、前記取付部の破断方向を規制する規制部が形成されてなる
燃料系統保護装置。A fuel system protection device for protecting a fuel system component including a fuel pipe for supplying fuel to an internal combustion engine,
A covering member covering at least a part of the fuel system component;
Protrusions is protruded opposite to the fuel system component side by cutting and raising a portion of the covering member peripheral components to allow destruction to be impinging on the fuel system components in the event of a vehicle collision When,
Equipped with a,
The covering member includes an attachment portion for attachment to the internal combustion engine, and a main body portion that covers the fuel system component,
The mounting portion is provided on the main body in a form that is easy to break with respect to the main body.
A fuel system protection device in which a restriction portion for restricting a breaking direction of the attachment portion is formed in the main body portion or the attachment portion . 前記規制部は、少なくとも前記取付部の破断の際に前記取付部をガイド可能に該取付部を挟み込むよう前記本体部の一部を切り起こして形成した一対のガイド壁である請求項１に記載の燃料系統保護装置。The regulating unit, according to claim 1 which is a pair of guide walls formed by cutting and raising a portion of at least said during the mounting portion breaks the attachment portion of the guide possible as to sandwich the mounting portion and the main body portion Fuel system protection device. 前記取付部は、前記本体部に対して重合して接合されてなる請求項１または請求項２に記載の燃料系統保護装置。The fuel system protection device according to claim 1 , wherein the attachment portion is superposed and joined to the main body portion. 前記取付部は、前記本体部に対してスポット溶接により接合されてなる請求項３に記載の燃料系統保護装置。  The fuel system protection device according to claim 3, wherein the attachment portion is joined to the main body portion by spot welding. 前記取付部と前記本体部とは、一体的に折曲形成されてなり、折曲部の少なくとも一部が他の部分に比して薄肉化されてなる請求項１または請求項２に記載の燃料系統保護装置。The said attachment part and the said main-body part are integrally formed by bending, and at least one part of a bending part is thinned compared with another part of Claim 1 or Claim 2. Fuel system protection device. 前記本体部には、入力が入った際に前記内燃機関に当接するよう該内燃機関に対して所定距離隔てて対向する当接片部が形成されてなり、
該当接片部は、前記本体部の一部を切り起こすことにより形成されてなる請求項１乃至請求項５何れかに記載の燃料系統保護装置。The main body portion is formed with a contact piece portion facing the internal combustion engine at a predetermined distance so as to contact the internal combustion engine when an input is input,
Abutment piece portion, the fuel system protection system according to claim 1 or any one of claims 5 formed by formed by cutting and raising a portion of the main body portion. 燃焼室を形成するシリンダヘッドと、該シリンダヘッドの上部に取り付けられるヘッドカバーと、
前記燃焼室に空気を供給する吸気系部品と、
少なくとも燃料管が前記シリンダヘッドに取り付けられる燃料系統部品と、
前記吸気系部品と前記燃料系統部品との間に配設され前記ヘッドカバーを介して前記シリンダヘッドに取り付けられる請求項１乃至請求項６何れかに記載の燃料系統保護装置と、
を備える内燃機関。A cylinder head forming a combustion chamber, a head cover attached to an upper portion of the cylinder head,
An intake system component for supplying air to the combustion chamber;
A fuel system component in which at least a fuel pipe is attached to the cylinder head; and
The fuel system protection device according to any one of claims 1 to 6 , wherein the fuel system protection device is disposed between the intake system component and the fuel system component and is attached to the cylinder head via the head cover.
An internal combustion engine.
JP2010511853A 2008-05-15 2008-05-15 FUEL SYSTEM PROTECTION DEVICE AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH THE SAME Expired - Fee Related JP5087138B2 (en)

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