JP2011202653A - Valve of fuel supply device for internal combustion engine - Google Patents

Valve of fuel supply device for internal combustion engine Download PDF

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Publication number
JP2011202653A
JP2011202653A JP2011017852A JP2011017852A JP2011202653A JP 2011202653 A JP2011202653 A JP 2011202653A JP 2011017852 A JP2011017852 A JP 2011017852A JP 2011017852 A JP2011017852 A JP 2011017852A JP 2011202653 A JP2011202653 A JP 2011202653A
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Prior art keywords
valve
fuel
spring member
chamber
valve body
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JP2011017852A
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JP5300884B2 (en
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Thomas Herman
トーマス・ハーマン
Karin Steinicke
カリン・シュタイニッケ
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MAN Energy Solutions SE
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MAN Diesel and Turbo SE
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/462—Delivery valves
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/464—Inlet valves of the check valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0054—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0433—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with vibration preventing means
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
    • E06B2009/524—Mesh details
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/04—Shutters, movable grilles, or other safety closing devices, e.g. against burglary of wing type, e.g. revolving or sliding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • F16B5/0692—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining flexible sheets to other sheets or plates or to strips or bars

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structural Engineering (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Safety Valves (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a fuel valve, particularly, a novel valve of a fuel supply device.SOLUTION: Via the valve, namely, the fuel valve of the fuel supply device for an internal combustion engine, fuel can be guided from a first region of the fuel supply device to a second region of the fuel supply device. The valve includes a valve element (4) to be cooperated with a valve seat (5). In the state that the valve is closed, an elastic force imparted by a spring member (6) pushes the valve element (4) against the valve seat (5), and in the state that the valve is opened, the valve element (4) is lifted up from the valve seat (5) against the elastic force of the spring member (6). The valve element (4) defines, at least in part, a fuel chamber (9) through which fuel flows in the state that the valve is opened. The spring member (6) to be cooperated with the valve element (4) is arranged in a spring member chamber (11), and the spring member chamber is connected to a fuel chamber (9) via at least one of recesses (12, 13). The size of the recess is equivalent to half the diameter of the spring wire of the spring member (6).

Description

本発明は、請求項１の、おいて書き部に記載の内燃機関の燃料供給装置の弁、すなわち特に吸入弁あるいは送り出し弁として形成された燃料弁に関する。   The present invention relates to a valve of a fuel supply device for an internal combustion engine according to claim 1, in particular a fuel valve formed as an intake valve or a delivery valve.

特許文献１には、複数の気筒を備えたエンジン、すなわち重油で運転される船舶用ディーゼルエンジンが開示されており、当該エンジンでは、各気筒にコモンレール式燃料供給装置のインジェクタが配設されている。当該インジェクタを介して、エンジンの各気筒に燃料が噴射可能である。特許文献１に記載されたコモンレール式燃料供給装置は、燃料をコモンレール式燃料供給装置の低圧領域から当該燃料供給装置の高圧領域に輸送するために、複数の高圧ポンプを有するポンプ装置を含んでおり、当該ポンプ装置と前記インジェクタとの間の高圧領域には、恒常的に高圧下に置かれている蓄圧システムが設けられている。当該恒常的に高圧下に置かれている蓄圧システムはコモンレールとも称され、特許文献１によれば、複数の蓄圧ユニットを有し、やはり恒常的に高圧下に置かれている高圧燃料導管を介して、ポンプ装置と接続されている。当該蓄圧システムはさらに、噴射のタイミングに応じて間欠的に高圧下に置かれる高圧燃料導管を介して、前記インジェクタに接続されている。特許文献１に記載のコモンレール式燃料供給装置においては、それぞれの高圧ポンプに吸入弁と送り出し弁が配設されており、個々の吸入弁を介して低圧領域から個々の高圧ポンプのポンプ室に燃料を吸い込み可能であり、送り出し弁を介して個々の高圧ポンプのポンプ室から蓄圧システムの方向に、および、それとともにコモンレール式燃料供給装置の高圧領域の方向に、燃料を搬送可能である。   Patent Document 1 discloses an engine having a plurality of cylinders, that is, a marine diesel engine operated with heavy oil. In the engine, an injector of a common rail fuel supply device is provided in each cylinder. . Fuel can be injected into each cylinder of the engine via the injector. The common rail fuel supply device described in Patent Document 1 includes a pump device having a plurality of high pressure pumps for transporting fuel from the low pressure region of the common rail fuel supply device to the high pressure region of the fuel supply device. In the high pressure region between the pump device and the injector, a pressure accumulating system that is constantly placed under high pressure is provided. The accumulator system that is constantly placed under high pressure is also referred to as a common rail. According to Patent Document 1, it has a plurality of accumulator units and is connected via a high-pressure fuel conduit that is also placed constantly under high pressure. And connected to the pump device. The accumulator system is further connected to the injector via a high-pressure fuel conduit that is intermittently placed under high pressure according to the timing of injection. In the common rail fuel supply apparatus described in Patent Document 1, each high-pressure pump is provided with a suction valve and a delivery valve, and fuel is supplied from the low-pressure region to the pump chamber of each high-pressure pump via each suction valve. The fuel can be transported from the pump chambers of the individual high-pressure pumps to the pressure accumulating system through the delivery valve and to the high-pressure region of the common rail fuel supply device.

このような燃料供給装置の吸入弁と送り出し弁とはそれぞれ、弁座と弁体とを備えており、弁が閉止された状態で、弁体は弁座に載り、弁が開放された状態で、弁体は弁座から持ち上げられている。このような弁を閉止するために、弁体はバネ部材によって、弁座に押し付けられ、開放するためには、バネ部材によって生じさせられた弾性力に抗して、弁座から持ち上げられる。   Each of the intake valve and the delivery valve of such a fuel supply device includes a valve seat and a valve body. When the valve is closed, the valve body rests on the valve seat and the valve is opened. The valve body is lifted from the valve seat. In order to close such a valve, the valve body is pressed against the valve seat by a spring member, and is lifted from the valve seat against the elastic force generated by the spring member to open.

従来技術では、このとき上記のような弁のバネ部材は、開弁時に燃料が貫流する燃料室に配置されている。バネ部材が例えば素材疲労のために破損した場合、バネ部材の断片が燃料によって押し流され、燃料供給装置の他の部材を損傷させる恐れがある。この点は不利である。   In the prior art, the spring member of the valve as described above is disposed in the fuel chamber through which fuel flows when the valve is opened. If the spring member breaks due to material fatigue, for example, the spring member fragment may be swept away by the fuel, damaging other members of the fuel supply device. This is a disadvantage.

独国特許出願公開第10 2004 060 003号明細書German Patent Application Publication No. 10 2004 060 003

上記の点に鑑み、本発明は燃料供給装置の新規な弁を創出することを課題とする。このような課題は、請求項１に記載の弁によって解決される。本発明によれば、弁体と協働するバネ部材は、バネ部材室に配置されており、当該バネ部材室は、少なくとも一つの凹所を介して燃料室と連通しており、当該凹所の寸法は最大で、バネ部材のバネ線の直径の半分に相当する。   In view of the above points, an object of the present invention is to create a new valve of a fuel supply device. Such a problem is solved by the valve according to claim 1. According to the present invention, the spring member that cooperates with the valve body is disposed in the spring member chamber, and the spring member chamber communicates with the fuel chamber via at least one recess. The maximum dimension is equivalent to half the diameter of the spring wire of the spring member.

本発明に係る弁において、バネ部材はバネ部材室に配置されており、当該バネ室は、開弁時に燃料が貫流する燃料室から、基本的に分離されているが、少なくとも一つの凹所を介して前記燃料室と連結されている。従って、弁を開放するために弁体を移動させる際に、バネ部材室にある燃料が押し出されることはあり得る。   In the valve according to the present invention, the spring member is disposed in the spring member chamber, and the spring chamber is basically separated from the fuel chamber through which the fuel flows when the valve is opened, but has at least one recess. And is connected to the fuel chamber. Therefore, when the valve body is moved to open the valve, the fuel in the spring member chamber may be pushed out.

しかしながら、バネ部材が破損した場合、当該バネ部材の断片が燃料によって押し流され、燃料供給装置の他の部材群の領域に到達し、当該部材群を損傷させる危険はない。   However, when the spring member is broken, there is no danger of damaging the member group because the fragment of the spring member is washed away by the fuel and reaches the region of the other member group of the fuel supply device.

本発明の好適なさらなる構成は、従属請求項および以下の詳細な説明に記載されている。図面を参照しながら以下に本発明の実施の形態をより詳しく説明するが、本発明は当該実施の形態に限定されない。   Further preferred configurations of the invention are described in the dependent claims and in the following detailed description. Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. However, the present invention is not limited to the embodiments.

コモンレール式燃料供給装置を、送り出し弁として形成された本発明に係る弁の領域において示す部分概略図である。It is a partial schematic diagram showing a common rail type fuel supply device in the area of the valve concerning the present invention formed as a delivery valve. 図１に示す弁の断面図である。It is sectional drawing of the valve shown in FIG.

本発明は内燃機関の燃料供給装置、特に船舶用ディーゼルエンジンのコモンレール式燃料供給装置の弁に関する。本発明に係る弁は、特に、吸入弁あるいは送り出し弁として形成された燃料弁であり、当該燃料弁を介して、燃料を、燃料供給装置の第一の領域から当該燃料供給装置の第二の領域へガイド可能である。   The present invention relates to a fuel supply device for an internal combustion engine, and more particularly to a valve of a common rail fuel supply device for a marine diesel engine. The valve according to the present invention is in particular a fuel valve formed as an intake valve or a delivery valve, through which fuel is fed from a first region of the fuel supply device to a second of the fuel supply device. Guide to the area.

コモンレール式燃料供給装置は低圧領域および高圧領域を有している。当該高圧領域は、少なくとも一つの高圧ポンプを有するポンプ装置と、少なくとも一つの畜圧ユニットを有する蓄圧システムとを含んでおり、ポンプ装置の単独または個々の高圧ポンプは、吸入弁を介して、燃料を低圧領域から高圧領域に吸引し、送り出し弁を介して蓄圧システムに供給する。燃料は蓄圧システムを起点として、インジェクタを介して気筒に噴射可能である。   The common rail fuel supply apparatus has a low pressure region and a high pressure region. The high-pressure region includes a pump device having at least one high-pressure pump and a pressure accumulating system having at least one livestock pressure unit. The single or individual high-pressure pump of the pump device is connected to a fuel via an intake valve. Is sucked from the low pressure region to the high pressure region and supplied to the pressure accumulating system via the delivery valve. The fuel can be injected into the cylinder via the injector, starting from the pressure accumulation system.

図１および図２は、燃料供給装置を、送り出し弁として形成された本発明に係る弁１の領域において示している。弁１は、弁ハウジング３の凹所２に配置された弁体４を含んでおり、当該弁体は、弁ハウジング３によって提供される弁座５と協働する。弁１が閉止されているとき、弁体４は弁座に当接するが、そのために弁体４はバネ部材６によって、弁座５に押し付けられる。弁１が開放されているとき、弁体４はバネ部材６によって提供される弾性力に抗して、弁座５から持ち上げられている。バネ部材６は弁体４と弁頭１４とに支持される。   1 and 2 show the fuel supply device in the region of the valve 1 according to the invention formed as a delivery valve. The valve 1 includes a valve body 4 arranged in a recess 2 in the valve housing 3, which cooperates with a valve seat 5 provided by the valve housing 3. When the valve 1 is closed, the valve body 4 comes into contact with the valve seat. For this purpose, the valve body 4 is pressed against the valve seat 5 by the spring member 6. When the valve 1 is opened, the valve body 4 is lifted from the valve seat 5 against the elastic force provided by the spring member 6. The spring member 6 is supported by the valve body 4 and the valve head 14.

既に述べたとおり、図１に示す弁１は燃料供給装置の送り出し弁であり、当該送り出し弁を介して、燃料は高圧ポンプのポンプ室から蓄圧システムの方向に搬送され得る。送り出し弁１が配置されている凹所２は、このために、燃料導管７を介して高圧ポンプのポンプ室に接続され、燃料導管８を介して蓄圧システムに接続されている。   As described above, the valve 1 shown in FIG. 1 is a delivery valve of the fuel supply device, and fuel can be conveyed from the pump chamber of the high-pressure pump toward the pressure accumulation system via the delivery valve. For this purpose, the recess 2 in which the delivery valve 1 is arranged is connected to the pump chamber of the high-pressure pump via a fuel conduit 7 and to the pressure accumulating system via a fuel conduit 8.

図に示す実施形態では、本発明に係る弁１の弁体４の径方向内側に燃料室９が設けられており、当該燃料室は弁１が開放された状態で、燃料に貫流されている。弁１が開放されているとき、燃料は開口部１０を介して、弁体４の径方向内側にある燃料室９に流入することができ、当該燃料室を貫流して燃料導管８に向かう。   In the embodiment shown in the figure, a fuel chamber 9 is provided radially inward of the valve body 4 of the valve 1 according to the present invention, and the fuel chamber flows through the fuel with the valve 1 being opened. . When the valve 1 is opened, the fuel can flow into the fuel chamber 9 located radially inside the valve body 4 through the opening 10, and flows through the fuel chamber toward the fuel conduit 8.

弁体４は、弁１が開放された状態で、燃料に貫流されている燃料室９を、少なくとも部分的に限定もしくは画定する。   The valve body 4 at least partially defines or demarcates the fuel chamber 9 that flows through the fuel with the valve 1 open.

弁体４に弾性力を付与するために用いられるバネ部材６は、当該燃料室９内に配置されておらず、図に示す実施形態では、弁体４に対して径方向外側に接続する別個のバネ室１１に配置されている。弁体４はバネ室１１を、少なくとも部分的に限定もしくは画定する。   The spring member 6 used for applying the elastic force to the valve body 4 is not disposed in the fuel chamber 9 and is separately connected to the valve body 4 in the radial direction outside in the embodiment shown in the figure. The spring chamber 11 is disposed. The valve body 4 at least partially defines or defines the spring chamber 11.

バネ部材６を収容するために用いられる当該バネ室１１は、少なくとも一つの凹所１２,１３を介して燃料室９と連通されているので、弁体９が移動する際、特に弁１を開放するとき、バネ室１１にある燃料は当該バネ室から押し出され得る。   Since the spring chamber 11 used for housing the spring member 6 communicates with the fuel chamber 9 via at least one recess 12, 13, the valve 1 is opened particularly when the valve body 9 moves. When doing so, the fuel in the spring chamber 11 can be pushed out of the spring chamber.

単独または個々の凹所１２および１３であって、当該凹所を介してバネ室１１が燃料室９と連通している単独または個々の凹所は、最大でバネ部材６のバネ線の直径の半分に相当する寸法を有している。   The single or individual recesses 12 and 13 through which the spring chamber 11 communicates with the fuel chamber 9 have a maximum diameter of the spring wire of the spring member 6. It has a dimension corresponding to half.

単独または個々の凹所１２および１３であって、当該凹所を介してバネ部材室１１が燃料室９に連結されている単独または個々の凹所の寸法は、好適に、最大でバネ部材６のバネ線の直径の三分の一に相当する。   The size of the single or individual recesses 12 and 13 through which the spring member chamber 11 is connected to the fuel chamber 9 is preferably at most a maximum of the spring member 6. Equivalent to one third of the diameter of the spring wire.

図２の実施形態では、二つの異なる種類の凹所１２および１３が設けられている。当該凹所を介してバネ部材室１１は燃料室９に連結されている。すなわち、溝として形成された凹所１２と、穴として形成された凹所１３が設けられている。   In the embodiment of FIG. 2, two different types of recesses 12 and 13 are provided. The spring member chamber 11 is connected to the fuel chamber 9 through the recess. That is, a recess 12 formed as a groove and a recess 13 formed as a hole are provided.

溝として形成された凹所１２は弁体４の外側に、当該弁体の長手方向に延在するとともに、バネ部材６のバネ線の直径の最大で半分、好適に最大で三分の一に相当する幅および／または深さを有している。   The recess 12 formed as a groove extends outside the valve body 4 in the longitudinal direction of the valve body, and is at most half of the diameter of the spring wire of the spring member 6, preferably at most one third. It has a corresponding width and / or depth.

穴として形成された凹所１３は、弁体４の長手方向を横断するように延在し、当該凹所１３の直径は、バネ部材６のバネ線の直径の最大で半分、好適に最大で三分の一に相当する。   The recess 13 formed as a hole extends so as to cross the longitudinal direction of the valve body 4, and the diameter of the recess 13 is at most half, preferably at most, the diameter of the spring line of the spring member 6. Equivalent to one third.

当該実施形態と異なり、溝として形成された凹所１２のみ、あるいは、穴として形成された凹所１３のみが設けられていることも可能である。   Unlike the embodiment, it is possible to provide only the recess 12 formed as a groove or only the recess 13 formed as a hole.

本発明は類似の方法で、燃料供給装置の吸入弁に応用することもできる。吸入弁に応用した場合の唯一の相違点は、吸入弁が、高圧ポンプのポンプ室から蓄圧システムの方向に燃料を輸送するために用いられるのではなく、燃料を低圧領域から吸い込み、それによって高圧ポンプのポンプ室に輸送するために用いられることである。しかしながら弁の構成に関しては、上記の説明が参照され得る。   The invention can also be applied in a similar manner to the intake valve of a fuel supply device. The only difference when applied to the suction valve is that the suction valve is not used to transport fuel from the pump chamber of the high pressure pump in the direction of the pressure accumulator system, but sucks fuel from the low pressure region, thereby It is used for transporting to the pump chamber of the pump. However, reference may be made to the above description regarding the configuration of the valve.

１ 弁
２ 凹所
３ 弁ハウジング
４ 弁体
５ 弁座
６ バネ部材
７ 燃料導管
８ 燃料導管
９ 燃料室
１０ 凹所
１１ バネ室
１２ 凹所
１３ 凹所
１４ 弁頭 Reference Signs List 1 valve 2 recess 3 valve housing 4 valve body 5 valve seat 6 spring member 7 fuel conduit 8 fuel conduit 9 fuel chamber 10 recess 11 spring chamber 12 recess 13 recess 14 valve head

Claims (9)

内燃機関の燃料供給装置、特に船舶用ディーゼルエンジンのコモンレール式燃料供給装置の弁、特に、吸入弁あるいは送り出し弁として形成された燃料弁であって、当該燃料弁を介して、燃料を、前記燃料供給装置の第１の領域から当該燃料供給装置の第２の領域へガイド可能であり、前記弁は弁座と協働する弁体を有しており、
前記弁が閉止された状態で、バネ部材によって付与される弾性力は、前記弁体を前記弁座に押し付け、前記弁が開放された状態で、前記弁体は前記バネ部材の前記弾性力に抗して前記弁座から持ち上げられており、前記弁体は、前記弁が開放された状態で燃料に貫流される燃料室を、少なくとも部分的に限定もしくは画定する、弁において、
前記弁体(４)と協働する前記バネ部材(６)はバネ部材室(１１)に配置されており、当該バネ部材室は少なくとも一つの凹所(１２,１３)を介して前記燃料室(９)と接続されており、当該凹所の寸法は、最大で前記バネ部材(６)のバネ線の直径の半分に相当することを特徴とする弁。 A fuel supply device for an internal combustion engine, particularly a common rail fuel supply device for a marine diesel engine, particularly a fuel valve formed as an intake valve or a delivery valve, through which the fuel is supplied to the fuel Guideable from a first region of the supply device to a second region of the fuel supply device, the valve having a valve body cooperating with a valve seat;
In the state where the valve is closed, the elastic force applied by the spring member presses the valve body against the valve seat, and in the state where the valve is opened, the valve body acts on the elastic force of the spring member. Wherein the valve body is lifted from the valve seat and the valve body at least partially defines or defines a fuel chamber through which the fuel flows with the valve open;
The spring member (6) cooperating with the valve body (4) is disposed in a spring member chamber (11), and the spring member chamber is connected to the fuel chamber via at least one recess (12, 13). The valve is connected to (9), and the dimension of the recess corresponds to half the diameter of the spring wire of the spring member (6) at the maximum. 単独または個々の凹所(１２,１３)であって、当該凹所を介して前記バネ部材室(１１)が前記燃料室(９)に接続されている単独または個々の凹所の寸法は、最大で前記バネ部材(６)のバネ線の直径の三分の一に相当することを特徴とする請求項１に記載の弁。   The dimensions of the single or individual recesses (12, 13) through which the spring member chamber (11) is connected to the fuel chamber (9) are as follows: 2. Valve according to claim 1, characterized in that it corresponds to at most one third of the diameter of the spring wire of the spring member (6). 燃料に貫流されている前記燃料室(９)は、前記弁体(４)内の径方向内側に形成されており、前記バネ室(１１)は前記弁体(４)に対して径方向外側に接続することを特徴とする請求項１または請求項２に記載の弁。   The fuel chamber (9) flowing through the fuel is formed radially inside the valve body (4), and the spring chamber (11) is radially outside the valve body (4). The valve according to claim 1, wherein the valve is connected to the valve. 単独または個々の凹所(１２)であって、当該凹所を介して前記バネ部材室(１１)が前記燃料室(９)に接続されている単独または個々の凹所は、溝として形成されていることを特徴とする請求項１から請求項３のいずれか一項に記載の弁。   A single or individual recess (12) through which the spring member chamber (11) is connected to the fuel chamber (9) is formed as a groove. The valve according to any one of claims 1 to 3, wherein the valve is provided. 個々の前記溝は、前記弁体(４)の外側において、当該弁体の長手方向に延在することを特徴とする請求項４に記載の弁。   The valve according to claim 4, wherein each of the grooves extends in the longitudinal direction of the valve body outside the valve body (4). 単独または個々の前記溝(１３)の幅および／または深さは、前記バネ部材(６)のバネ線の直径の最大で半分、特に最大で三分の一に相当することを特徴とする請求項４または請求項５に記載の弁。   The width and / or depth of the single or individual groove (13) corresponds to at most half of the diameter of the spring wire of the spring member (6), in particular at most one third. Item 6. The valve according to item 4 or item 5. 単独または個々の凹所(１３)であって、当該凹所を介して前記バネ部材室(１１)が前記燃料室(９)に連結されている単独または個々の凹所は、穴として形成されていることを特徴とする請求項１から請求項６のいずれか一項に記載の弁。   A single or individual recess (13) through which the spring member chamber (11) is connected to the fuel chamber (9) is formed as a hole. The valve according to any one of claims 1 to 6, wherein the valve is provided. 個々の前記穴は、前記弁体(４)の長手方向を横断するように延在することを特徴とする請求項７に記載の弁。   8. A valve according to claim 7, characterized in that the individual holes extend across the longitudinal direction of the valve body (4). 単独または個々の前記穴の直径は、前記バネ部材(６)のバネ線の直径の最大で半分、特に最大で三分の一に相当することを特徴とする請求項７または請求項８に記載の弁。   9. The diameter of the single or individual hole corresponds to at most half of the diameter of the spring wire of the spring member (6), in particular at most one third. Valve.
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