KR0172131B1 - Electronically operated fuel injection valve - Google Patents

Electronically operated fuel injection valve Download PDF

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Publication number
KR0172131B1
KR0172131B1 KR1019910700769A KR910700769A KR0172131B1 KR 0172131 B1 KR0172131 B1 KR 0172131B1 KR 1019910700769 A KR1019910700769 A KR 1019910700769A KR 910700769 A KR910700769 A KR 910700769A KR 0172131 B1 KR0172131 B1 KR 0172131B1
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KR
South Korea
Prior art keywords
valve seat
valve
fuel injection
guide cylinder
injection valve
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KR1019910700769A
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Korean (ko)
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KR920701659A (en
Inventor
그라이너 막스
로만 페테르
라이테르 페르디난트
바비츠카 루돌프
Original Assignee
클라우스 포스; 랄프 홀거 베렌스
로베르트 보쉬 게엠베하
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Publication of KR920701659A publication Critical patent/KR920701659A/en
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Publication of KR0172131B1 publication Critical patent/KR0172131B1/en

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Classifications

    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/188—Spherical or partly spherical shaped valve member ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, 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
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1873—Valve seats or member ends having circumferential grooves or ridges, e.g. toroidal

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

본 발명은, 가솔린 엔진용 전자기 작동식 연료 분사 밸브(1)에 대하여, 출구 오리피스, 밸브 시트 그리고 가이드 실린더를 서로 매우 정밀하게 정렬시켜, 작동의 정확성을 증가시키며, 밸브 시트 몸체(5)가 축에 인접한 그 내부 영역에서 가이드 실린더(7), 밸브 시트(8)와 출구 오리피스(9)를 갖는 연료 분사 밸브의 마모성 작동을 개선한다. 본 발명은 특히 차량 엔진용 연료 분사 장치에 관한다.The present invention, with respect to the electromagnetically actuated fuel injection valve (1) for a gasoline engine, aligns the outlet orifice, the valve seat and the guide cylinder with each other very precisely, increasing the accuracy of the operation and the valve seat body (5) It improves the wear operation of the fuel injection valve with the guide cylinder 7, the valve seat 8 and the outlet orifice 9 in its inner region adjacent to the. The invention relates in particular to a fuel injection device for a vehicle engine.

Description

전자기 작동식 연료 분사 밸브Electromagnetically Actuated Fuel Injection Valve

본 발명은 특허청구 범위 제1항의 일반적인 형태의 연료 분사 밸브에 관한 것이다.The present invention relates to a fuel injection valve of the general form of claim 1.

일반적인 형태의 연료 분사 밸브가 DE-PS 31 02 642 에 공지되어 있다. 상기 구조에 있어서, 한편에는 가이드 실린더와 밸브시트를 구비한 가이드 링과, 다른 한편에는 분사될 연료용 오리피스를 구비한 제트로서 기술되는 부분이 분리부를 형성한다. 연료분사 밸브 조립시에, 이러한 분리부의 치수 공차의 제한 초과가 밸브시트의 변형을 유발할 수 있으며 밸브시트와 오리피스에 대한 가이드 실린더의 공통 중심성이 나쁘게 되어, 증가된 불규칙 연료 방사 패턴을 발생시킨다.A fuel injection valve of the general type is known from DE-PS 31 02 642. In the above structure, the part described as a jet having a guide ring with a guide cylinder and a valve seat on the one hand and an orifice for fuel to be injected on the other hand forms a separation portion. When assembling the fuel injection valve, exceeding the limit of the dimensional tolerances of this separation may cause deformation of the valve seat and worsen the common centrality of the guide cylinders for the valve seat and orifice, resulting in an increased irregular fuel emission pattern.

본 발명의 양호한 실시예를 첨부 도면을 참조하여 상세히 기술한다.Preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.

제1도는 연료 분사 밸브의 밸브시트 영역의 단면도이며,1 is a cross-sectional view of the valve seat area of the fuel injection valve,

제2도는 연료 분사 밸브의 밸브시트 몸체를 도시한다.2 shows the valve seat body of the fuel injection valve.

청구범위 제1항의 특징적인 형태를 갖는 본 발명에 따른 연료분사 밸브는 조립 작업이 간단하며, 가이드 실린더, 밸브시트 그리고 분사 오리피스가 밸브시트 몸체의 축과 정확하게 정렬된 것이다. 이러한 높은 정밀성은 공차가 없는 것에서 가능하다. 연료의 정확한 계측과 정확한 분사 시기를 갖는 연료 분사 밸브의 일정한 정밀 응답이 개선된 연료 방사 패턴으로 수행된다. 본 발명의 또다른 개선점이 종속항에 발생한다.The fuel injection valve according to the invention having the features of claim 1 is simple to assemble and the guide cylinder, valve seat and injection orifice are precisely aligned with the axis of the valve seat body. This high precision is possible in the absence of tolerances. Accurate metering of the fuel and constant precision response of the fuel injection valve with the correct injection timing are performed with an improved fuel emission pattern. Further developments of the invention occur in the dependent claims.

저비용과 정확한 치수의 제조를 위하여 가이드 실린더, 밸브시트 및 나사선 홈을 스탬프 가공으로 제작하는 것이 적절하다.It is appropriate to manufacture guide cylinders, valve seats and threaded grooves by stamping for low cost and accurate dimensions.

혼합 압축 점화식 내연 기관에서의 연료 분사장치를 위한 연료 분사 밸브(1)는 포트(4)를 갖는 밸브 하우징(3)을 구비하며, 그 내부에 밸브시트 몸체(5)가 용접 결합부(6)에 의하여 고정되어 있다. 밸브시트 몸체(5)는 중앙 보어형 가이드 실린더(7)를 설치한다. 가이드 실린더(7)의 아래에 밸브시트 몸체(5)가 밸브시트(8)와 실린더를 따라서 내연 기관의 유도 매니폴드로 연료 분사를 위하여 적어도 하나의 출구 오리피스(9)를 갖는다.The fuel injection valve 1 for a fuel injector in a mixed compression ignition internal combustion engine has a valve housing 3 with a port 4 in which a valve seat body 5 has a welded joint 6. It is fixed by. The valve seat body 5 installs a central bore type guide cylinder 7. Under the guide cylinder 7 a valve seat body 5 has at least one outlet orifice 9 for fuel injection along the valve seat 8 and the induction manifold of the internal combustion engine along the cylinder.

방사상 오리피스(11)를 갖는 튜브형 밸브폐쇄부재(10)가 포트(4)를 지나서 돌출한다. 밸브시트(8)를 향하는 측면상에서 밸브폐쇄부재(10)가 예를들면 단단한 볼형태의 밸브폐쇄체를 갖는다. 밸브시트(8)의 다른 측면상에서 밸브폐쇄부재(10)는 연자성 재료의 전기자를 갖는다. 적은 역활을 하는 밸브폐쇄체(12)는 가이드 실린더(7)로 돌출하며, 연료 분사 밸브(1)의 폐쇄 상태에서 그것은 밸브시트(8)를 향하여 놓인다. 가이드 실린더(7)의 벽은 밸브폐쇄부재(10)의 축에 대하여 기울어진 나사선 홈(16)을 갖는다. 가이드 실린더와 밸브시트(8)사이에 홈(22)이 링 형상으로 형성되어 밸브시트(8)로의 나사선 홈(16)의 전달을 차단한다.A tubular valve closing member 10 having a radial orifice 11 protrudes past the port 4. On the side facing the valve seat 8 the valve closing member 10 has a valve closure, for example in the form of a rigid ball. On the other side of the valve seat 8 the valve closing member 10 has an armature of soft magnetic material. The valve role 12 which plays a small role protrudes into the guide cylinder 7, and in the closed state of the fuel injection valve 1, it is placed toward the valve seat 8. The wall of the guide cylinder 7 has a threaded groove 16 inclined with respect to the axis of the valve closing member 10. A groove 22 is formed in a ring shape between the guide cylinder and the valve seat 8 to block the transfer of the threaded groove 16 to the valve seat 8.

밸브폐쇄부재(10)는 압력 스프링(17)으로부터 폐쇄 방향으로 압력을 받는다. 자기 코일(18)은 그것이 여기되는 폐쇄방향에 반대 방향으로 전기자를 이동시키는 방식으로 전기자(15)에 인접하여 정렬된다.The valve closing member 10 receives pressure from the pressure spring 17 in the closing direction. The magnetic coil 18 is aligned adjacent to the armature 15 in a manner that moves the armature in a direction opposite to the closing direction in which it is excited.

제2도에 도시된 밸브시트 몸체(5)는 밸브시트 몸체(5)의 축에 대하여 경사진 나사선 홈(16)을 명확하게 도시한다. 또한 밸브시트(8)와 적어도 하나의 출구 오리피스(9)가 도시되어 있다. 상기 밸브 시트 몸체의 실시예에 있어서, 밸브시트(8)가 밸브폐쇄부재(10)를 개방시 밸브시트(8)로부터 빨리 상승시키고 폐쇄작동시 빨리 폐쇄시키도록 동심을 가져야하는 가이드 실린더에 대하여 가공 정밀성이 특히 요구된다. 밸브폐쇄부재(10)와 밸브시트(8)사이의 마찰은 가능한 짧게 유지된다. 밸브시트 몸체(5)의 표면(20)은 밸브폐쇄부재(10)의 길이와 밸브폐쇄체(12)의 볼 형상으로 인하여 이것이 역작용을 갖지 않으므로 가이드 실린더(7)에 대하여 약간의 편심을 허용한다.The valve seat body 5 shown in FIG. 2 clearly shows a threaded groove 16 inclined with respect to the axis of the valve seat body 5. Also shown is a valve seat 8 and at least one outlet orifice 9. In the embodiment of the valve seat body, the valve seat 8 is machined against a guide cylinder which must be concentric to lift the valve closing member 10 out of the valve seat 8 upon opening and close quickly during closing operation. Precision is particularly required. The friction between the valve closing member 10 and the valve seat 8 is kept as short as possible. The surface 20 of the valve seat body 5 allows some eccentricity with respect to the guide cylinder 7 because it has no counter action due to the length of the valve closure member 10 and the ball shape of the valve closure 12. .

연료 분사 밸브(1)를 개방하기 위하여, 자기 코일(18)의 전기 회로가 폐쇄된다. 그래서 작용하게되는 자력이 전기자(15)를 당긴다. 이 전기자와 함께 밸브폐쇄부재(10)의 밸브폐쇄체(12)는 가압 압축 스프링(17)을 향하여 밸브시트(8)로부터 이동하여, 연료가 밸브폐쇄부재(10)와 방사상 오리피스(11)로부터 나사선 홈(16)을 지나서 밸브시트(8)까지 통과하여 적어도 하나의 출구 오리피스(9) 아래로 유동하여 분사 될수 있다. 가이드 실린더(7)와 밸브시트(8)사이의 둥근 홈(22)은 균등한 연료 유통을 용이하게, 연료 처리를 개선한다.In order to open the fuel injection valve 1, the electrical circuit of the magnetic coil 18 is closed. So the magnetic force acting pulls the armature 15. Together with this armature, the valve closure body 12 of the valve closure member 10 moves from the valve seat 8 toward the pressurized compression spring 17 so that fuel is released from the valve closure member 10 and the radial orifice 11. It can be injected by flowing under the at least one outlet orifice 9 through the threaded groove 16 and through the valve seat 8. The round groove 22 between the guide cylinder 7 and the valve seat 8 facilitates even fuel distribution and improves fuel handling.

밸브시트 몸체(5)의 가이드 실린더내의 나사선 홈(16), 밸브시트(8) 및 가이드 실린더(7)는 적절한 형상으로 수행되는 스탬프 처리에 의하여 최종형상으로 경제적으로 그리고 정밀하게 제작될 수 있다.The thread groove 16, the valve seat 8 and the guide cylinder 7 in the guide cylinder of the valve seat body 5 can be manufactured economically and precisely in the final shape by a stamping treatment performed in an appropriate shape.

Claims (4)

밸브 하우징(3)과, 나선형 홈(16)을 통해 연료를 유동시키는 볼형 밸브폐쇄체(12)를 지탱하는 밸브폐쇄부재(10)가 내부로 들어가는 가이드 실린더(7)를 갖는 밸브시트 몸체(5)를 포함하며, 상기 밸브 시트몸체(5)내에 제공된 밸브시트(8)를 안치 또는 상승시키므로써 유체를 유동시키거나 차단시키는 전자기 작동식 연료 분사 밸브(1)에 있어서, 상기 밸브 시트 몸체(5)는 가이드 실린더(7) 및 밸브 시트(8)와 함께 하나이상의 출구 오리피스(9)를 또한 포함하고, 상기 가이드 실린더(7)와 상기 밸브 시트(8)사이의 밸브 시트 몸체(5)내에 둘레 전체에 나선형 홈(22)이 제공된 것을 특징으로 하는 연료 분사 밸브.A valve seat body 5 having a valve housing 3 and a guide cylinder 7 into which the valve closing member 10 for supporting the ball-shaped valve closing body 12 for flowing fuel through the helical groove 16 enters therein. And an electromagnetically actuated fuel injection valve (1) for flowing or blocking fluid by placing or raising a valve seat (8) provided in the valve seat body (5), wherein the valve seat body (5) ) Also includes one or more outlet orifices 9 together with the guide cylinder 7 and the valve seat 8, the circumference in the valve seat body 5 between the guide cylinder 7 and the valve seat 8. A fuel injection valve, characterized in that a spiral groove (22) is provided in its entirety. 제1항에 있어서, 상기 가이드 실린더(7)의 벽에 나선형 홈(16)이 제공된 것을 특징으로 하는 연료 분사 밸브.Fuel injection valve according to claim 1, characterized in that a helical groove (16) is provided in the wall of the guide cylinder (7). 제1항 또는 제2항에 있어서, 상기 밸브 시트 몸체(5)내에 가이드 실린더(7), 밸브 시트(8) 및 나선형 홈(16)은 스탬프 가공에 의하여 제작되는 것을 특징으로 하는 연료 분사 밸브.The fuel injection valve according to claim 1 or 2, characterized in that the guide cylinder (7), the valve seat (8) and the helical groove (16) in the valve seat body (5) are manufactured by stamping. 제1항에 있어서, 상기 밸브 하우징(3)은 용접 연결부에 의하여 밸브 시트 몸체(5)를 지지하는 것을 특징으로 하는 연료 분사 밸브.Fuel injection valve according to claim 1, characterized in that the valve housing (3) supports the valve seat body (5) by a welded connection.
KR1019910700769A 1989-11-25 1990-10-12 Electronically operated fuel injection valve KR0172131B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP3939093.4 1989-11-25
DEP39390934 1989-11-25
DE3939093A DE3939093A1 (en) 1989-11-25 1989-11-25 ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
PCT/DE1990/000775 WO1991008392A1 (en) 1989-11-25 1990-10-12 Electromagnetically operated fuel-injection valve

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KR920701659A KR920701659A (en) 1992-08-12
KR0172131B1 true KR0172131B1 (en) 1999-03-20

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KR1019910700769A KR0172131B1 (en) 1989-11-25 1990-10-12 Electronically operated fuel injection valve

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EP (1) EP0455758B1 (en)
JP (1) JP3167321B2 (en)
KR (1) KR0172131B1 (en)
AU (1) AU635785B2 (en)
BR (1) BR9007081A (en)
CZ (1) CZ279368B6 (en)
DE (2) DE3939093A1 (en)
ES (1) ES2050457T3 (en)
HU (1) HU209966B (en)
WO (1) WO1991008392A1 (en)

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Publication number Priority date Publication date Assignee Title
DE4141930B4 (en) * 1991-12-19 2007-02-08 Robert Bosch Gmbh Electromagnetically actuated injection valve
DE4231448C1 (en) * 1992-09-19 1993-10-21 Bosch Gmbh Robert Electromagnetic fuel injection valve for ic engine - with conical taper and radial edge downstream of valve seating surface for providing fine fuel vapour mist
DE4239110A1 (en) * 1992-11-20 1994-05-26 Bosch Gmbh Robert Fuel injector
DE19724091A1 (en) * 1997-06-07 1998-12-10 Bosch Gmbh Robert Valve
DE19829422A1 (en) * 1998-07-01 2000-01-05 Bosch Gmbh Robert Fuel injector
US6669166B2 (en) * 2000-07-28 2003-12-30 Nippon Soken, Inc. Electromagnetic valve
DE10049033B4 (en) * 2000-10-04 2005-08-04 Robert Bosch Gmbh Fuel injector
DE10050751B4 (en) 2000-10-13 2005-08-11 Robert Bosch Gmbh Fuel injector
DE10050752B4 (en) * 2000-10-13 2005-06-02 Robert Bosch Gmbh Fuel injection valve with a swirl-generating element
DE10360706A1 (en) 2003-12-19 2005-07-14 Aweco Appliance Systems Gmbh & Co. Kg Valve and method for manufacturing a valve

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CA1132417A (en) * 1979-01-29 1982-09-28 Gary L. Casey Electromagnetic fuel injector
US4483485A (en) * 1981-12-11 1984-11-20 Aisan Kogyo kabuskiki Kaisha Electromagnetic fuel injector
US4660770A (en) * 1985-09-25 1987-04-28 United Technologies Diesel Systems, Inc. Electromagnetic fuel injector
KR930004967B1 (en) * 1988-07-13 1993-06-11 가부시기가이샤 히다찌세이사꾸쇼 Electronic fuel injector
DE3831196A1 (en) * 1988-09-14 1990-03-22 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE VALVE
DE3841142C2 (en) * 1988-12-07 1994-09-29 Bosch Gmbh Robert Injector

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BR9007081A (en) 1991-11-26
JP3167321B2 (en) 2001-05-21
HUT59739A (en) 1992-06-29
DE59004626D1 (en) 1994-03-24
CZ583590A3 (en) 1993-06-16
JPH04503097A (en) 1992-06-04
HU209966B (en) 1995-01-30
EP0455758A1 (en) 1991-11-13
DE3939093A1 (en) 1991-05-29
ES2050457T3 (en) 1994-05-16
WO1991008392A1 (en) 1991-06-13
AU6515190A (en) 1991-06-26
KR920701659A (en) 1992-08-12
AU635785B2 (en) 1993-04-01
HU907635D0 (en) 1991-06-28
CZ279368B6 (en) 1995-04-12
EP0455758B1 (en) 1994-02-16

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