KR840002953A - Reducing Fuel Injectors - Google Patents

Reducing Fuel Injectors Download PDF

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Publication number
KR840002953A
KR840002953A KR1019820005514A KR820005514A KR840002953A KR 840002953 A KR840002953 A KR 840002953A KR 1019820005514 A KR1019820005514 A KR 1019820005514A KR 820005514 A KR820005514 A KR 820005514A KR 840002953 A KR840002953 A KR 840002953A
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KR
South Korea
Prior art keywords
injector
passage
supply
fuel
injection
Prior art date
Application number
KR1019820005514A
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Korean (ko)
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KR860001308B1 (en
Inventor
피·페트 쥴리우스 (외 1)
Original Assignee
알·이·호프마이스터
컴민스 엔진 캄파니 인코포레이티드
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Priority claimed from US06/332,249 external-priority patent/US4471909A/en
Priority claimed from US06/336,334 external-priority patent/US4441654A/en
Application filed by 알·이·호프마이스터, 컴민스 엔진 캄파니 인코포레이티드 filed Critical 알·이·호프마이스터
Publication of KR840002953A publication Critical patent/KR840002953A/en
Application granted granted Critical
Publication of KR860001308B1 publication Critical patent/KR860001308B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00Fuel-injectors combined or associated with other devices
    • F02M57/02Injectors structurally combined with fuel-injection pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00Fuel-injectors combined or associated with other devices
    • F02M57/02Injectors structurally combined with fuel-injection pumps
    • F02M57/021Injectors structurally combined with fuel-injection pumps the injector being of valveless type, e.g. the pump piston co-operating with a conical seat of an injection nozzle at the end of the pumping stroke
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00Fuel-injectors combined or associated with other devices
    • F02M57/02Injectors structurally combined with fuel-injection pumps
    • F02M57/022Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102Mechanical drive, e.g. tappets or cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14Direct injection into combustion chamber
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

내용 없음No content

Description

축소용 연료 주입기(injector)Reducing Fuel Injectors

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 연료공급 및 배유통로의 배를 크게 단순화한 본 발명에 의한 실시예 1의 부분절단 단면도,1 is a partial cut cross-sectional view of Embodiment 1 according to the present invention, which greatly simplifies the ship of the fuel supply and the distribution passage,

제2도는 인젝터플런저(injector plunger)가 최외위치에서 캠작동에 의해 작동되는 제1도의 주입기의 부분절단 단면도,FIG. 2 is a partial cutaway sectional view of the injector of FIG. 1 in which an injector plunger is operated by cam operation in the outermost position, FIG.

제3도는 본 발명의 주입기에서 연소가스의 역류를 감소시킨 유단캠(stepped cam)의 도해 설명도.3 is a schematic illustration of a stepped cam that reduces the backflow of combustion gases in the injector of the present invention.

Claims (11)

리세스(recess)가 개방되어 공급포오트에서 유입된 연료일부를 내연기관의 연소실에 주기적으로 주입시키며 또 공급포오트에서 리세프가 개방되고 축방향으로 간격을 둔 배출포오트까지 유입된 연료의 잔부를 회수시키는 내연기관의 리세스를 수납하는 주입기용 연료주입기에 있어서, (a) 공급포오트와 주입기 본체의 외부면 사이에 연장되어 있는 공급유로를 형성하고 또 배출유로를 형성하여 리세스에 삽입하고 그 공급 유로에서 분리시키며, 중심보어와, 그 중심보어의 내부단 가까이 위치한 개방주입오리피스를 가진 주입기본체, (b) 공급유로에서 중심보어로 유입되는 가압연료의 통로를 구성하며 그 주입기 몸체의 외부면에서 그 주입기본체의 종축에 수직인 반경방향의 직선상통로를 따라 중심보어의 내부면에 이르는 공급통로를 구성하는 공급연결부재, (c) 중심보어에서 배출흐름통로로 흐르는 연려통로를 구성한 배출연결부재 및 (d) 주입오리피스가 주입기플런저의 내부단에 의해 폐쇄된 최대 위치와, 주입실이 그 내부단과 개방주입오리피스 사이의 중심보어내에 형성된 최외위치와의 사이에 있는 중심보어내에서 왕복운동을 하도록 장치되어 있고, 최내 위치에서 제1의 예정축거리 이하일때 마다 연료의 배출흐름이 주입기본체를 통과하도록 하는 배출흐름 통로를 형성하며 최대 위치에서 제2의 예정축거리 이상일 때마다 공급통로에서 주입실에 이르는 연료를 측정하도록 하는 배출흐름통로를 구성하는 주입기플런저를 구비함을 특징으로 하는 축소형 연료주입기.A recess is opened to periodically inject a portion of the fuel introduced from the supply port into the combustion chamber of the internal combustion engine, and the fuel flows from the supply port to the discharge port with the recess open and axially spaced. In the injector fuel injector for storing the recess of the internal combustion engine for recovering the remainder, (a) forming a supply flow path extending between the supply port and the outer surface of the injector body and to form a discharge flow path to the recess The injection body having a central bore and an open injection orifice located near the inner end of the central bore, and (b) a passage for pressurized fuel entering the central bore from the supply passage and the injector body. Supply which constitutes a supply passage from the outer face of the feed bore to the inner face of the central bore along a radial straight passage perpendicular to the longitudinal axis of the injection body. (C) the discharge connection member which constitutes the soft passage flowing from the central bore to the discharge flow passage, and (d) the maximum position where the injection orifice is closed by the inner end of the injector plunger, and the injection chamber is at its inner end and the open injection orifice. It is arranged to reciprocate in the central bore between the outermost position formed in the central bore between the two, and the discharge flow of the fuel flows through the injection body whenever the first predetermined axial distance is below the innermost position. And an injector plunger which forms an outlet flow passage for forming a passage and measuring the fuel from the supply passage to the injection chamber whenever it is above the second predetermined axial distance at the maximum position. 제1항에 있어서, 흐름조절부재에는 주입기플러저가 최대 위치에 있을때 공급통로에서 배출통로로 축방향으로 연장되어 있는 배출흐름통로를 형성하는 주입기플런저 외부면상에 환상 요홈과, 배출흐름통로와 주입실사이에 시일(seal)을 형성하는 중심보어의 내부면과 협동하는 원통상평면 부재(land)를 구성함을 특징으로 하는 축소형 연료주입기.The flow regulating member of claim 1, wherein the flow regulating member includes an annular groove, an outlet flow passage, and an injection chamber on an outer surface of the injector plunger which forms an outlet flow passage extending axially from the supply passage to the discharge passage when the injector plugger is in the maximum position. And a cylindrical flat member cooperating with an inner surface of the central bore forming a seal. 제1항 또는 제2항에 있어서, 배출연결부재에는 주입기 외부면에서 주입기본체의 종축에 수직인 반경방향의 직선상통로를 따라 중심보어의 내부면에 이르는 배출통로를 구성함을 특징으로 하는 축소형 연료 주입기.3. The reduction connecting method according to claim 1 or 2, wherein the discharge connection member comprises a discharge passage from the outer surface of the injector to the inner surface of the central bore along a radial straight passage perpendicular to the longitudinal axis of the injection body. Type fuel injector. 제2항에 있어서, 공급연결 부재에 의해 구성된 공급통로의 형상은 공급포오트에 의한 공급연료압과, 주입기플런저가 그 최내 위치에서 제1의 예정축거리이상 있을 때의 총시간에 따라 좌우되도록 한 각각의 주입 싸이클마다 연료량을 주입실에서 측정되게 함을 특징으로 하는 축소형 연료주입기.The shape of the supply passage formed by the supply connecting member is dependent on the supply fuel pressure by the supply port and the total time when the injector plunger is above the first predetermined axial distance at its innermost position. Reduced fuel injector, characterized in that the fuel amount is measured in the injection chamber for each injection cycle. 제2항에 있어서 제1의 예정거리는 원통형 평면부재의 축거리와, 공급통로의 개구에서 중심보어에 이르는 축거리를 합한 동일한 거리만큼 제2의 예정거리이하임을 특징으로 하는 축소형 연료 주입기.3. The reduced fuel injector of claim 2, wherein the first predetermined distance is equal to or less than the second predetermined distance by the same distance which adds up the axial distance of the cylindrical planar member and the axial distance from the opening of the supply passage to the central bore. 제1항에 있어서, 주입기 본체에는 그 본체가 작동할 수 있도록 리레스를 수납한 주입기 내에 있을때 공급포오트 각각과 연통되게 주입기본체를 따라 측방향으로 간격을 둔 제1 및 제2환상리세스를 그 외부면상에 구성함을 특징으로 하는 축소형 연료주입기.2. The injector body according to claim 1, wherein the injector body has a first and a second annular recess spaced laterally along the injection body in communication with each of the supply ports when in the injector containing the recess so that the body can operate. Reduced fuel injector characterized in that it is configured on the outer surface. 제6항에 있어서, 주입기본체에는 주입기본체의 외부면과 리세스 수납한 주입기의 내부면 사이에 원주상시일을 형성하는 시이링부재를 구성하여 공급흐름통로를 배출흐름통로와 분리시킴을 특징으로 하는 축소형 연료 주입기.7. The injection main body is characterized in that the supply flow path is separated from the discharge flow path by forming a seal ring member that forms a columnar seal between the outer surface of the injection main body and the inner surface of the recessed injector. Miniature fuel injector. 제1항에 있어서, 주입기 본체에는 리세스를 수납한 주입기의 내부에 내부나사와 조합시킨 외측단메 외부나사를 구성하고 또 렌치에 의한 토오크를 받아들이도록 형성된 외측단에 소켓을 구비함을 특징으로 하는 축소형 연료주입기.2. The injector main body has an outer end of the injector which is combined with an inner screw in the injector which accommodates the recess, and has a socket at the outer end which is configured to receive torque by a wrench. Reduced fuel injector. 연료공급흐름통로에서 유입된 내연기관연료의 연소실에 주기적으로 주입하는 연료주입기 조립체에 있어서, (a) 중심보어, 그 중심보어와 연소실 사이에 연통통로를 구성시켜 위치한 개방주입오리피스를 가진 주입기 본체, (b) 공급흐름통로에서 중심보어로 흐르는 연료통로를 구성하여 공급오리피스를 통해 중심보어와 연통되는 공급통로를 가진 공급연결부재, (c) 주입기 플런저의 내부단에 의해 주입오리피스를 폐쇄하는 최내위치와, 주입기 플런저의 내부단과 주입오리피스 사이에 있는 중심보어매네 주입실을 형성한 최외위치와의 사이엥 중심보어내에서 왕복운동을 하도록 장치되고, 중심보어의 내부면과 직접 시이링접촉을 하는 원통상면을 가져 주입실시일을 형성하는 주입기 플런저 및, (d) 연소실압력이 비교적 낮을 때에만 직적 주입실로 공급오리피스가 개방되게 공급오리피스에서 외측방향으로 원통형면을 작동시키며, 또 공급통로가 차단되지 않은 상태로 있을 경우 공급통로의 가스를 역류되게 연소실의 압력이 충분히 증가되는 기간중에 주입실에서 공급통로를 시일하는 공급오리피스에 원통형면이 위치하는 공급통로 차단위치까지 내방향으로 주입기 플런저를 작동시킴으로써 공급통로에 가스의 역류없이 연료가 주입실에서 측정되게 연료실내에서 피스톤의 운동에 따라 주입기 플런저를 왕복운동시키는 캠작동부재를 구비함을 특징으로 하는 연료 주입기 조립체.A fuel injector assembly for periodically injecting a combustion chamber of an internal combustion engine fuel introduced from a fuel supply flow passage, the fuel injector assembly comprising: (a) an injector body having an open injection orifice formed by forming a communication passage between a central bore and the central bore and the combustion chamber; (b) a supply connecting member having a supply passage communicating with the central bore through the supply orifice by forming a fuel passage flowing from the supply flow passage to the central bore; and (c) the innermost position of closing the injection orifice by the inner end of the injector plunger. And a cylinder for reciprocating in the center bore of the center bore between the inner end of the injector plunger and the outer bore forming the center bore injection chamber, which is in direct contact with the inner surface of the center bore. An injector plunger having an upper surface to form an injection embodiment, and (d) being injected into the direct injection chamber only when the combustion chamber pressure is relatively low. Operate the cylindrical surface outward from the feed orifice so that the orifice is open, and seal the supply passage in the injection chamber during a period when the pressure in the combustion chamber is sufficiently increased to reverse the gas in the supply passage if the supply passage is not blocked. By operating the injector plunger inwardly to the supply passage blocking position where the cylindrical surface is located in the supply orifice, the injector plunger is reciprocated in accordance with the movement of the piston in the fuel chamber so that fuel is measured in the injection chamber without backflow of gas into the supply passage. A fuel injector assembly comprising a cam operating member. 제9항에 있어서, 캠 작동부재가 주입기 플런저의 위치를 조절하는 캠로우브를 구성하며, 이 캠로우브에는 최내 외치에서 주입기 플플런저를 지지하는 반경방향거리를 가진 제1부분, 최외 위치에서 주입기 플런저를 지지하는 반경반향 거리를 가진 제2부분 그 주입기 플런저를 공급통로 차단위까지 작동하는 제1 및 제2부분의 중간에 있는 반경방향의 거리를 갖고 있는 제3부분을 구성함을 특징으로 하는 연료주입기 조립체.10. The cam lobe of claim 9, wherein the cam actuating member constitutes a cam lobe for adjusting the position of the injector plunger, the cam lobe having a first portion having a radial distance supporting the injector plunger at the innermost outer, at the outermost position. A second part having a radial distance supporting the injector plunger and forming a third part having a radial distance in the middle of the first and second parts which operate the injector plunger above the supply passage block A fuel injector assembly. 제9항에 있어서, 제3부분은 그 대응하는 피스톤의 압축행정의 거리 중간지점에서 주입개시에 이르기까지 공급통로 차단위치에서 주입기 플런저를 지지하도록 하는 원주상의 거리를 갖고 있음을 특징으로 하는 연료주입기 조립체.10. The fuel according to claim 9, wherein the third portion has a circumferential distance to support the injector plunger at the supply passage blocking position from the intermediate point of the compression stroke of the corresponding piston to the start of injection. Injector Assembly. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR8205514A 1981-12-18 1982-12-09 Miniaturized unit fuel injector KR860001308B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/332,249 US4471909A (en) 1981-12-18 1981-12-18 Miniaturized unit fuel injector
US332,249 1981-12-18
US336,334 1981-12-31
US06/336,334 US4441654A (en) 1981-12-31 1981-12-31 Fuel injector assembly including a blow-back prevention cam

Publications (2)

Publication Number Publication Date
KR840002953A true KR840002953A (en) 1984-07-21
KR860001308B1 KR860001308B1 (en) 1986-09-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR8205514A KR860001308B1 (en) 1981-12-18 1982-12-09 Miniaturized unit fuel injector

Country Status (4)

Country Link
KR (1) KR860001308B1 (en)
BR (1) BR8207376A (en)
GB (1) GB2112871B (en)
MX (1) MX154435A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642478B1 (en) * 1989-02-02 1991-04-12 Semt Pielstick DEVICE FOR CONTROLLING A FUEL INJECTION PUMP
GB0229487D0 (en) * 2002-12-18 2003-01-22 Delphi Tech Inc Cam arrangement and fuel pump arrangement incorporating a cam arrangement
JP6494486B2 (en) * 2015-09-30 2019-04-03 ヤンマー株式会社 diesel engine

Also Published As

Publication number Publication date
BR8207376A (en) 1983-10-18
GB2112871B (en) 1986-05-21
KR860001308B1 (en) 1986-09-11
MX154435A (en) 1987-08-17
GB2112871A (en) 1983-07-27

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