JP6352591B2 - Injector and fuel supply device for fuel supply device of internal combustion engine - Google Patents

Injector and fuel supply device for fuel supply device of internal combustion engine Download PDF

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Publication number
JP6352591B2
JP6352591B2 JP2013046419A JP2013046419A JP6352591B2 JP 6352591 B2 JP6352591 B2 JP 6352591B2 JP 2013046419 A JP2013046419 A JP 2013046419A JP 2013046419 A JP2013046419 A JP 2013046419A JP 6352591 B2 JP6352591 B2 JP 6352591B2
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injector
pressure
supply device
fuel supply
accumulator
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JP2013194732A (en
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シュテファン・ケルン
ヴェルナー・ウォール
ハラルド・ヴェレンコッター
ヨーゼフ・フィッシャー
アンドレアス・パンパス
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MAN Energy Solutions SE
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MAN Energy Solutions SE
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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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8076—Fuel injection apparatus manufacture, repair or assembly involving threaded members
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering

Description

本発明は、請求項１のおいて書きに記載された、内燃機関の燃料供給装置用のインジェクタに関する。本発明はさらに、請求項８のおいて書きに記載された、内燃機関の燃料供給装置に関する。   The present invention relates to an injector for a fuel supply device for an internal combustion engine as described in claim 1. The invention further relates to a fuel supply device for an internal combustion engine as described in claim 8.

特許文献１には、内燃機関、すなわち重油で運転される船舶ディーゼル内燃機関であって、複数のシリンダを有し、各シリンダにはコモンレール燃料供給装置の一つのインジェクタが割り当てられている内燃機関が開示されている。これらインジェクタを介して内燃機関のシリンダのそれぞれに燃料が噴射可能である。特許文献１に記載のコモンレール燃料供給装置は、コモンレール燃料供給装置の低圧領域から、同コモンレール燃料供給装置の高圧領域へ燃料を供給するために、複数の高圧ポンプを有する一つのポンプ装置を有しており、高圧領域内のポンプ装置とインジェクタとの間には、常時、高圧下にある一つのプレッシャアキュムレータシステムが設けられている。この常時、高圧下にあるプレッシャアキュムレータシステムはコモンレールとも称され、特許文献１によると複数のアキュムレータユニットを有し、やはり常時、高圧下にある高圧燃料管を介してポンプ装置に接続されている。プレッシャアキュムレータシステムはまた、噴射サイクルに応じて一時的に高圧下にある高圧燃料管を介してインジェクタに接続されている。噴射サイクルに応じて一時的に高圧下にある高圧燃料管により、インジェクタがプレッシャアキュムレータシステムに接続されており、これら高圧燃料管には、噴射サイクルに応じてインジェクタに燃料を供給するスイッチ要素が割り当てられている。   Patent Document 1 discloses an internal combustion engine, that is, a marine diesel internal combustion engine operated with heavy oil, which has a plurality of cylinders, and each cylinder is assigned one injector of a common rail fuel supply device. It is disclosed. Fuel can be injected into each cylinder of the internal combustion engine via these injectors. The common rail fuel supply device described in Patent Document 1 has one pump device having a plurality of high pressure pumps for supplying fuel from the low pressure region of the common rail fuel supply device to the high pressure region of the common rail fuel supply device. One pressure accumulator system that is always under high pressure is provided between the pump device and the injector in the high pressure region. This pressure accumulator system always under high pressure is also called a common rail. According to Patent Document 1, it has a plurality of accumulator units and is always connected to a pump device via a high pressure fuel pipe under high pressure. The pressure accumulator system is also connected to the injector via a high pressure fuel tube that is temporarily under high pressure in response to the injection cycle. Injectors are connected to the pressure accumulator system by means of high-pressure fuel pipes that are temporarily under high pressure according to the injection cycle, and these high-pressure fuel pipes are assigned switch elements that supply fuel to the injector according to the injection cycle. It has been.

大型ディーゼル内燃機関又は船舶ディーゼル内燃機関においては、燃料供給装置のインジェクタと燃料供給装置のプレッシャアキュムレータシステムとの間の空間的間隔が比較的大きくなる可能性があり、そのため、これらインジェクタをプレッシャアキュムレータシステムに接続している、噴射サイクルに応じて一時的に高圧下にある高圧燃料管が比較的長い構成になり得るため、圧力損失を低減させるためのインジェクタがすでに知られており、そのインジェクタは、内燃機関のシリンダ内へと実際に燃料を噴射する一つのノズル本体のほかに、一つのアキュムレータ本体を有しており、このアキュムレータ本体は個々のインジェクタごとの燃料アキュムレータ容積を提供する。そのようなアキュムレータ本体を備えた、実用的に知られているインジェクタにおいては、それぞれのインジェクタのアキュムレータ本体は、そのインジェクタのノズル本体と同様、ねじ締めによりそれぞれのインジェクタの保持体に取り外し可能に取り付けられている。複数の構成部品をねじ締めすることにより、一方では取り付けコストが高まり、また他方では、燃料供給装置の密閉性を保つためにねじ締め部は高圧に耐える必要があり、それによりシーリングコストが高まる。   In a large diesel internal combustion engine or a marine diesel internal combustion engine, the spatial distance between the injector of the fuel supply device and the pressure accumulator system of the fuel supply device may be relatively large. An injector for reducing pressure loss is already known, because the high-pressure fuel pipe, which is temporarily under high pressure depending on the injection cycle, can be of a relatively long configuration, connected to the In addition to one nozzle body that actually injects fuel into the cylinder of the internal combustion engine, it has one accumulator body, which provides the fuel accumulator volume for each individual injector. In a practically known injector equipped with such an accumulator body, the accumulator body of each injector is removably attached to the holder of each injector by screwing, like the nozzle body of the injector. It has been. By screwing a plurality of components, on the one hand, the installation cost is increased, and on the other hand, in order to maintain the hermeticity of the fuel supply device, the screw tightening part needs to withstand high pressure, thereby increasing the sealing cost.

独国特許発明第101 57 135号明細書German Patent Invention No. 101 57 135 Specification

そのため本発明の課題は、より低コストで製造及び取り付けが可能な、新規な燃料供給装置用インジェクタを提供することである。さらに、そのようなインジェクタを備えた新規な燃料供給装置を提供することである。   Therefore, an object of the present invention is to provide a novel injector for a fuel supply device that can be manufactured and attached at a lower cost. Furthermore, it is providing the novel fuel supply apparatus provided with such an injector.

この課題は、請求項１に記載の、燃料供給装置用インジェクタにより解決される。本発明においては、保持体とアキュムレータ本体とは互いに材料結合的に結合されている。本発明では、個々のインジェクタ毎の燃料アキュムレータ容積を提供するためのアキュムレータ本体を有するインジェクタにおいて、そのインジェクタのアキュムレータ本体と保持体とを材料結合的に、したがって、取外し不可能に互いに結合することが提案される。アキュムレータ本体と保持体とを材料結合的に結合させることにより、インジェクタ取り付けの際に互いに結合すべきインジェクタ部品の数が少なくなる。   This problem is solved by the fuel supply device injector according to claim 1. In the present invention, the holding body and the accumulator body are coupled to each other in a material bond. According to the present invention, in an injector having an accumulator body for providing a fuel accumulator volume for each individual injector, the accumulator body and the holding body of the injector can be coupled to each other in a material-bonding manner, and thus non-removable. Proposed. By connecting the accumulator main body and the holding body in a material-bonding manner, the number of injector parts to be connected to each other when the injector is attached is reduced.

さらに、保持体とアキュムレータ本体とを材料結合的に結合することによりインジェクタの潜在的な漏れ部位の一つがなくなるため、従来技術に存在する、インジェクタの保持体とアキュムレータ本体との間の高圧シール面をシールするための高コストの対策を行わずにすむ。   Furthermore, since the holding body and the accumulator body are joined in a material-bonding manner, one of the potential leakage portions of the injector is eliminated, so that a high-pressure sealing surface between the injector holding body and the accumulator body exists in the prior art. This eliminates the need for costly measures for sealing.

本発明の一つの好適な発展形においては、保持体とアキュムレータ本体とは摩擦溶接により、望ましくは回転摩擦溶接により材料結合的に互いに結合される。摩擦溶接、望ましくは回転摩擦溶接により保持体とアキュムレータ本体との間に材料結合的な結合が提供されることにより、それぞれのインジェクタの保持体とアキュムレータ本体とが特に好適に、材料結合的に結合される。   In one preferred development of the invention, the holding body and the accumulator body are joined together in a material bond by friction welding, preferably by rotary friction welding. A material-bonded connection between the holding body and the accumulator body is provided by friction welding, preferably rotary friction welding, so that the holding body of each injector and the accumulator body are particularly preferably bonded in a material-bonded manner. Is done.

望ましくは、保持体とノズル本体とは特にねじ締めにより取外し可能に互いに結合される。   Preferably, the holding body and the nozzle body are detachably connected to each other, in particular by screwing.

本発明による燃料供給装置は請求項８において規定される。   A fuel supply device according to the invention is defined in claim 8.

本発明の望ましい展開は従属請求項及び以下の説明から明らかである。図を用いて本発明の実施例を説明するが、これに限定されるわけではない。   Desirable developments of the invention are evident from the dependent claims and the following description. Embodiments of the present invention will be described with reference to the drawings, but are not limited thereto.

サイドフィードインジェクタとして構成された、コモンレール燃料供給装置のインジェクタの高度に図式化された図である。FIG. 2 is a highly diagrammatic view of an injector of a common rail fuel supply device configured as a side feed injector. トップフィードインジェクタとして構成された、コモンレール燃料供給装置のインジェクタの高度に図式化された図である。FIG. 2 is a highly diagrammatic view of an injector of a common rail fuel supply device configured as a top feed injector. 図１及び図２のインジェクタの保持体及びアキュムレータ本体が結合されていない状態の図である。It is a figure of the state which the holding body and accumulator main body of the injector of FIG.1 and FIG.2 are not couple | bonded. 図３の保持体とアキュムレータとが結合された状態の図である。It is a figure of the state with which the holding body and accumulator of FIG. 3 were couple | bonded.

本発明は、大型ディーゼル内燃機関、特に重油で運転される船舶ディーゼル内燃機関のコモンレール燃料供給装置に関する。コモンレール燃料供給装置は、低圧領域及び高圧領域を有する。   The present invention relates to a common rail fuel supply device for a large diesel internal combustion engine, particularly a marine diesel internal combustion engine operated with heavy oil. The common rail fuel supply device has a low pressure region and a high pressure region.

コモンレール燃料供給装置の高圧領域は、少なくとも一つの高圧ポンプを有するポンプ装置、及び、少なくとも一つのアキュムレータユニットを有するプレッシャアキュムレータシステムを備えており、このポンプ装置により燃料が低圧領域から高圧領域へと供給され、このポンプ装置は少なくとも一つの高圧燃料管を介してプレッシャアキュムレータシステムに接続されている。プレッシャアキュムレータシステム及び、プレッシャアキュムレータシステムをポンプ装置に接続する当該の又はそれぞれの高圧燃料管は常時高圧の作動圧力下にある。   The high-pressure region of the common rail fuel supply device includes a pump device having at least one high-pressure pump and a pressure accumulator system having at least one accumulator unit, and this pump device supplies fuel from the low-pressure region to the high-pressure region. The pump device is connected to the pressure accumulator system via at least one high-pressure fuel pipe. The pressure accumulator system and the or each high-pressure fuel line connecting the pressure accumulator system to the pumping device are always under a high operating pressure.

燃料はプレッシャアキュムレータシステムからインジェクタを介してシリンダ内に噴射可能であり、各インジェクタは、内燃機関の噴射サイクルに応じて一時的に高圧下にある、少なくとも一つの高圧燃料管を介してプレッシャアキュムレータシステムに接続されている。   The fuel can be injected into the cylinder from the pressure accumulator system via the injector, and each injector is temporarily under high pressure according to the injection cycle of the internal combustion engine, and the pressure accumulator system via at least one high pressure fuel pipe It is connected to the.

内燃機関の噴射サイクルに応じて一時的に高圧下にあるそれぞれの高圧燃料管にはスイッチ要素が割り当てられており、このスイッチ要素により、内燃機関の噴射サイクルに応じて一時的に高圧下にある高圧燃料管を通る燃料の流れが許可又は遮断される。   A switch element is assigned to each high-pressure fuel pipe which is temporarily under high pressure according to the injection cycle of the internal combustion engine, and this switch element is temporarily under high pressure according to the injection cycle of the internal combustion engine. The flow of fuel through the high pressure fuel pipe is permitted or interrupted.

本発明はまた、そのようなコモンレール燃料供給装置のインジェクタ、つまり、個々のインジェクタ毎の燃料アキュムレータ容積を提供するためにプレッシャアキュムレータシステムの当該又はそれぞれのアキュムレータユニットのほかに一つのアキュムレータ本体を含むようなインジェクタの詳細に関するものである。そのようなアキュムレータ本体を用いることにより、プレッシャアキュムレータシステムとインジェクタとの間の燃料管が長いために起こりうる、コモンレール燃料供給装置の高圧領域内における圧力低下を減少させることができる。   The present invention also includes an injector body of such a common rail fuel supply system, i.e., an accumulator body in addition to the or each accumulator unit of the pressure accumulator system to provide a fuel accumulator volume for each individual injector. This is related to the details of a simple injector. By using such an accumulator body, it is possible to reduce the pressure drop in the high pressure region of the common rail fuel supply device, which can occur due to the long fuel tube between the pressure accumulator system and the injector.

図１及び図２は、インジェクタ１及び１'の大幅に図式化された図であり、図示されたインジェクタ１又は１'はそれぞれ、ノズル本体２、保持体３、アキュムレータ本体４を有している。   FIGS. 1 and 2 are highly schematic views of injectors 1 and 1 ′, each of which has a nozzle body 2, a holding body 3 and an accumulator body 4. .

それぞれのインジェクタ１，１'のノズル本体２は望ましくは、図示されていないインジェクタニードルを有しており、内燃機関のシリンダ内への実際の燃料噴射を行う。ノズル本体２は、それぞれのインジェクタ１，１'の保持体３の一方の側に接合され、この保持体３に取外し可能に、特にねじ締めにより取り付けられている。   The nozzle body 2 of each injector 1, 1 ′ preferably has an injector needle (not shown) and performs the actual fuel injection into the cylinder of the internal combustion engine. The nozzle body 2 is joined to one side of the holding body 3 of each injector 1, 1 ′, and is detachably attached to the holding body 3, particularly by screwing.

保持体３の、上記の側とは反対に位置する側には、それぞれのインジェクタ１，１'のアキュムレータ本体４が接合されており、アキュムレータ本体４はノズル本体２のすぐ近く、すなわち内燃機関のそれぞれのシリンダへの燃料噴射部位のすぐ近くで、個々のインジェクタ毎の燃料アキュムレータ容積を提供する。   The accumulator body 4 of each injector 1, 1 'is joined to the side of the holding body 3 opposite to the above side, and the accumulator body 4 is in the immediate vicinity of the nozzle body 2, that is, the internal combustion engine. Providing a fuel accumulator volume for each individual injector in the immediate vicinity of the fuel injection site to each cylinder.

図１ではインジェクタ１は、いわゆるサイドフィードインジェクタとして具現化されており、プレッシャアキュムレータシステムからインジェクタ１へ向かう方向に燃料を供給するための高圧燃料管５が、保持体３に接合されている。そのためこの場合、燃料は、保持体３を介してアキュムレータ本体４へ、及びノズル本体２へ供給可能である。   In FIG. 1, the injector 1 is embodied as a so-called side feed injector, and a high-pressure fuel pipe 5 for supplying fuel in a direction from the pressure accumulator system toward the injector 1 is joined to the holding body 3. Therefore, in this case, the fuel can be supplied to the accumulator body 4 and the nozzle body 2 via the holding body 3.

図２ではインジェクタ１１が、いわゆるトップフィードインジェクタとして具現化されており、プレッシャアキュムレータシステムからインジェクタ１'へ向かう方向に燃料を供給するための高圧燃料管５が、アキュムレータ本体４に接合されている。   In FIG. 2, the injector 11 is embodied as a so-called top feed injector, and a high-pressure fuel pipe 5 for supplying fuel in a direction from the pressure accumulator system toward the injector 1 ′ is joined to the accumulator body 4.

それぞれのインジェクタ１又は１'の保持体３とアキュムレータ本体４とは互いに材料結合的に結合されている。それぞれのインジェクタ１又は１’の保持体３とアキュムレータ本体４との材料結合的な結合は望ましくは摩擦溶接、特に回転摩擦溶接により行われる。   The holding body 3 and the accumulator body 4 of each injector 1 or 1 'are connected to each other in a material bond. The material bond between the holder 3 of each injector 1 or 1 'and the accumulator body 4 is preferably effected by friction welding, in particular rotary friction welding.

保持体３をそれぞれのインジェクタ１又は１'のアキュムレータ本体４に摩擦によって固定的に結合させることにより、燃料供給装置を取り付ける際に互いに結合すべき構成部品の数が減る。さらに、コモンレール燃料供給装置の高圧領域における漏れ可能部位の一つもなくなる。そのためそれぞれのインジェクタ１又は１’の保持体３とアキュムレータ本体４との間のこの漏れ可能部位の高コストのシール手段をなくすことができる。   By fixedly coupling the holding body 3 to the accumulator body 4 of each injector 1 or 1 'by friction, the number of components to be coupled to each other when mounting the fuel supply device is reduced. Further, there is no leaking portion in the high pressure region of the common rail fuel supply device. Therefore, it is possible to eliminate the costly sealing means of this leakable portion between the holding body 3 of each injector 1 or 1 ′ and the accumulator body 4.

図３には、保持体３とそれぞれのインジェクタ１又は１'のアキュムレータ本体４とを材料結合的に結合させる前の、保持体３とそれぞれのインジェクタ１又は１'のアキュムレータ本体４が図示されている。図４ではこれらは、途切れのない材料結合的な結合を介して互いに結合され、溶接線６が形成される。   FIG. 3 shows the holding body 3 and the accumulator body 4 of each injector 1 or 1 ′ before the holding body 3 and the accumulator body 4 of each injector 1 or 1 ′ are bonded in a material-bonding manner. Yes. In FIG. 4, they are connected to each other via a continuous material-bonded connection, and a weld line 6 is formed.

１ インジェクタ
１' インジェクタ
２ ノズル本体
３ 保持体
４ アキュムレータ本体
５ 高圧燃料管
６ 溶接線 DESCRIPTION OF SYMBOLS 1 Injector 1 'Injector 2 Nozzle main body 3 Holding body 4 Accumulator main body 5 High-pressure fuel pipe 6 Welding line

Claims (4)

内燃機関の燃料供給装置用の、すなわち大型ディーゼル内燃機関又は船舶ディーゼル内燃機関のコモンレール燃料供給装置用のインジェクタであって、ノズル本体(２)と、保持体(３)と、アキュムレータ本体(４)と、を備え、前記ノズル本体(２)は前記保持体(３)の第１の側に接合されており内燃機関のシリンダ内への燃料噴射を行い、また、前記アキュムレータ本体(４)は前記保持体(３)の第２の側に接合されており個々のインジェクタ毎の燃料アキュムレータ容積を提供しているインジェクタにおいて、前記保持体(３)は、その第２の側に平坦面を有し、かつ、前記アキュムレータ本体(４)は、前記保持体(３)の前記第２の側と接合される、その側に平坦面を有し、前記保持体(３)における前記平坦面と前記アキュムレータ本体(４)における前記平坦面とが回転摩擦溶接により溶接線(６)を伴って材料結合的に互いに結合されており、前記保持体(３)と前記ノズル本体(２)とが、ねじ締めにより、取外し可能に互いに結合されていることを特徴とするインジェクタ。 An injector for a fuel supply device of an internal combustion engine, that is, a common rail fuel supply device of a large diesel internal combustion engine or a marine diesel internal combustion engine, comprising a nozzle body (2), a holding body (3), and an accumulator body (4) The nozzle body (2) is joined to the first side of the holding body (3) to inject fuel into the cylinder of the internal combustion engine, and the accumulator body (4) In an injector joined to the second side of the holder (3) and providing a fuel accumulator volume for each individual injector, the holder (3) has a flat surface on its second side. The accumulator body (4) has a flat surface joined to the second side of the holding body (3), and the flat surface of the holding body (3) and the accumulator In the main body (4) And Tanmen are materials coupled coupled to one another with the weld line (6) by the rotation friction welding, the holding member (3) and the nozzle body (2), but, by screwing removably to each other An injector characterized by being coupled . プレッシャアキュムレータシステムから前記インジェクタの方向に燃料を導くための、前記燃料供給装置の高圧燃料管(５)が、トップフィードインジェクタの形で前記アキュムレータ本体(４)に接合されることを特徴とする請求項１に記載のインジェクタ。 A high-pressure fuel pipe (5) of the fuel supply device for guiding fuel from a pressure accumulator system in the direction of the injector is joined to the accumulator body (4) in the form of a top feed injector. Item 4. The injector according to Item 1 . プレッシャアキュムレータシステムから前記インジェクタの方向に燃料を導くための、前記燃料供給装置の高圧燃料管(５)が、サイドフィードインジェクタの形で前記保持体(３)に接合されることを特徴とする請求項１に記載のインジェクタ。 A high-pressure fuel pipe (5) of the fuel supply device for guiding fuel from a pressure accumulator system in the direction of the injector is joined to the holding body (3) in the form of a side feed injector. Item 4. The injector according to Item 1 . 燃料供給装置、すなわち大型ディーゼル内燃機関又は船舶ディーゼル内燃機関のコモンレール燃料供給装置が、低圧領域を備え、前記燃料供給装置の前記低圧領域から前記燃料供給装置の高圧領域へと燃料を供給するために、少なくとも一つの高圧ポンプを有するポンプ装置を備えており、前記高圧領域においては前記ポンプ装置と、シリンダに割り当てられているインジェクタとの間に少なくとも一つのアキュムレータユニットを有する、常時高圧下にあるプレッシャアキュムレータシステムが設けられており、前記プレッシャアキュムレータシステムは少なくとも一つのやはり常時高圧下にある高圧燃料管を介して前記ポンプ装置に接続されており、前記プレッシャアキュムレータシステムは、噴射サイクルに応じて一時的に高圧下にある高圧燃料管を介して前記インジェクタに接続されている燃料供給装置において、前記インジェクタ(１，１')が、請求項１から請求項３のいずれか一項又は複数の項に記載されたように構成されていることを特徴とする燃料供給装置。 A fuel supply device, that is, a common rail fuel supply device of a large diesel internal combustion engine or a marine diesel internal combustion engine, has a low pressure region, and supplies fuel from the low pressure region of the fuel supply device to the high pressure region of the fuel supply device. A pressure device that has a pump device having at least one high-pressure pump, and has at least one accumulator unit between the pump device and an injector assigned to a cylinder in the high-pressure region. An accumulator system is provided, the pressure accumulator system being connected to the pumping device via at least one high-pressure fuel pipe, which is also always under high pressure, the pressure accumulator system temporarily depending on the injection cycle Under high pressure In the fuel supply apparatus connected to the injector via the high-pressure fuel pipe, so that the injector (1, 1 ') have been described in any one or more of the preceding claims 1 to 3 A fuel supply device comprising the fuel supply device.
JP2013046419A 2012-03-22 2013-03-08 Injector and fuel supply device for fuel supply device of internal combustion engine Active JP6352591B2 (en)

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KR101937491B1 (en) 2019-01-11
IN2013CH01160A (en) 2015-08-14

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