EP1017938B1 - Kraftstoffeinspritzventil für brennkraftmaschinen - Google Patents
Kraftstoffeinspritzventil für brennkraftmaschinen Download PDFInfo
- Publication number
- EP1017938B1 EP1017938B1 EP98966195A EP98966195A EP1017938B1 EP 1017938 B1 EP1017938 B1 EP 1017938B1 EP 98966195 A EP98966195 A EP 98966195A EP 98966195 A EP98966195 A EP 98966195A EP 1017938 B1 EP1017938 B1 EP 1017938B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding body
- injection valve
- fuel injection
- fuel
- peripheral wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
- 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
Definitions
- the invention relates to a fuel injection valve for Internal combustion engines according to the preamble of claim 1 out.
- a fuel injection valve for Internal combustion engines according to the preamble of claim 1 out.
- DE-Gbm.92 06 268.7 known fuel injector is at one in the Housing of the internal combustion engine to be supplied Holding body by means of a valve body of the injection valve axially fixed by a clamping nut.
- the valve body faces at least one into the combustion chamber at its free end of the internal combustion engine protruding injection opening on one running in the valve body and in the holding body Adjacent fuel inlet channel and by means of a movable Valve member within the valve body with this is connectable.
- the fuel inlet channel is in the holding body thereby by one to the lower one, facing the valve body End face of the holding body opening axial longitudinal bore and a radial cross hole intersecting this, the inlet opening of the transverse bore on the radial Circumferential wall surface of the holding body a lateral Pressure connection for one from a high pressure fuel pump Laxative fuel supply line forms.
- Laxative fuel supply line lies on the one formed at the inlet opening of the transverse bore side pressure connection to a pressure port on the external fuel supply line with the holding body combines.
- This pressure port is in tension screws Axial direction and radially to the axis of the holding body against this clamped, the holding body these clamping forces must completely absorb.
- the known fuel injection valve has the disadvantage that very high static stresses occur in the area of the intersection of the holes between the vertical longitudinal bore and the horizontal transverse bore of the fuel channel within the holding body due to the clamping forces of the pressure port to be absorbed. With these static loads, it is of great importance whether they cause compressive or tensile stresses in the holding body, with the known fuel injection valve the force introduction axis only forming a line on the circumferential wall and thus producing very large tensile stresses in the area of the intersection of the bores, which thus the permissible pressure threshold in reduce this area.
- the high static stresses which occur in particular as tangential tensile stresses in the area of the intersection of the bores, lead to long-term breaks in the area of the bore intersection at very high operating loads on the fuel injection valve, in particular at high fuel pressures of over 1800 bar, and thus to a failure of the fuel injection valves in question, so that these are not suitable for use on injection systems working with very high fuel injection pressures.
- the risk of component failure on the holding body is further exacerbated by vibrational stress, for example by a pulsating internal pressure in the fuel channel in cooperation with the high internal fuel pressure within the fuel channel and the static preload in the holding body.
- the fuel injector according to the invention for Internal combustion engines with the characteristic features of the Claim 1 has the advantage that a Line pressure as in the known holding body avoided can be and compared to the intersection of the holes Fuel inlet channel in the holding body two line contacts on the opposite side of the pressure port radial peripheral wall surface of the holding body laterally offset to intersect the holes. there this is advantageously done by providing a Deformation of the peripheral surface of the holding body on its lateral pressure connection opposite radial Peripheral wall portion. This way, within the Deformation and stress range in the amount of Hole intersection to widen the hole counteracting voltage torque generated. This Stress torque is derived from the resulting Forces formed on the holding body, the clamping force of the Counteract the pressure port on the side pressure connection.
- the side pressure connection on the holding body opposite indentation is preferably as Material removal from the radial peripheral wall of the holding body trained, but it is alternatively also possible to be included in the original shaping of the holding body.
- the removal of material from the indentation on the holding body is involved preferably designed as a bevel, the between the surface grinding and the rest of the radial Circumferential wall region of the holding body formed Transition edges outside the force transmission axis on lateral pressure connection.
- the lateral pressure connection on the holding body can as in Embodiment shown, perpendicular to the axis of the Holding body may be arranged, however, is also alternative an inclined arrangement possible. Furthermore, in Embodiment shown a surface grinding and described, the indentations on the circumference of the holding body can alternatively also other forms, for example have spherical or curved surfaces.
- Fuel injection valve for internal combustion engines is in of the drawing and is shown in the following Description approaching explained.
- FIG. 1 shows a longitudinal section through a Holding body of the fuel injector according to the invention and FIG. 2 shows a cross section of the holding body of the figure 1 along lines II.
- Fuel injection valve is essential to the invention Representation of a holding body 1 of the Fuel injector limited.
- This holding body 1 has a cylindrical basic shape, on the upper axial end face 3 in a manner not shown Tension screw or claw that attacks the holding body 1 with its lower end face 5 axially against one shown valve body clamped.
- Fuel inlet channel 7 is provided, which consists of one of the lower end face 5 outgoing axial longitudinal bore 9 and one of these intersecting radial transverse bore 11 is formed is.
- the inlet opening forms the radial one Cross bore 11 on the radial peripheral wall surface of the Holding body 1 has a lateral pressure connection 13.
- This lateral pressure connection 13 has an outward directional conical cross-sectional expansion of the radial Cross bore 11 into which a pressure connection sleeve 15th is used, whose conical inside diameter as Recording area for a pressure port one Fuel supply line is used by a non High-pressure fuel pump shown starting at the lateral pressure connection 13 of the holding body 1 opens and it is supplied with high pressure fuel.
- a valve spring of the Fuel injector is used and one Leakage hole 19 leads away.
- the counterforce F counteracting the clamping force 23 is now divided into two force components running at right angles to one another, of which a force component F y runs perpendicular to the force introduction axis 23 and a force component F x in the direction of the force introduction axis 23 and its clamping force.
- a resulting force component F res arises at the transition edges 25. a, which points in the direction of the longitudinal bore 9 in the holding body 1 and thus generates an advantageous compressive stress component in the holding body 1, which counteracts a possible widening of the longitudinal bore 9 or transverse bore 11 due to the high internal fuel pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die hohen statischen Spannungen, die insbesondere als tangentiale Zugverspannungen im Bereich der genannten Bohrungsverschneidung auftreten, führen dabei bei sehr hohen Betriebsbelastungen des Kraftstoffeinspritzventils, insbesondere bei Kraftstoffhochdrücken von über 1800bar zu Dauerbrüchen im Bereich der Bohrungsverschneidung und somit zu einem Ausfall der betreffenden Kraftstoffeinspritzventile, so daß diese für einen Einsatz an mit sehr hohen Kraftstoffeinspritzdrücken arbeitenden Einspritzsystemen nicht geeignet sind.
Dabei wird die Gefahr eines Bauteilversagens am Haltekörper durch eine Schwingbeanspruchung, z.B. durch einen pulsierenden Innendruck im Kraftstoffkanal im Zusammenwirken mit dem hohen Kraftstoffinnendruck innerhalb des Kraftstoffkanals und der statischen Vorspannung im Haltekörper weiter verstärkt.
Claims (6)
- Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem in ein Gehäuse der Brennkraftmaschine einsetzbaren Haltekörper (1), der mit einem in den Brennraum der Brennkraftmaschine ragenden Ventilköper verspannbar ist und in dem ein Kraftstoffzulaufkanal (7) zu einer Einspritzöffnung am Ventilkörper vorgesehen ist, wobei der Kraftstoffzulaufkanal (7) im Haltekörper (1) durch eine Längsbohrung (9) und eine, diese schneidende Querbohrung (11) gebildet ist, deren Eintrittsöffnung an einer radialen Umfangswand des Haltekörpers (1) einen seitlichen Druckanschluß (13) für eine Kraftstoffzuführungsleitung bildet, wobei der Haltekörper (1) im Bereich seiner dem seitlichen Druckanschluß (13) gegenüberliegenden radialen Umfangswandfläche eine radial einwärts gerichtete Einformung (21) aufweist, die Übergangskanten (25) zur übrigen radialen Umfangswand des Haltekörpers (1) aufweist, dadurch gekennzeichnet, daß die Übergangskanten (25) außerhalb einer Krafteinleitungsachse (23) des seitlichen Druckanschlusses (13) verlaufen und als Einspannpreß-Linien für den Haltekörper (1) dienen.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Einformung (21) als Materialabtrag von der radialen Umfangswand des Haltekörpers (1) ausgebildet ist.
- Kraftstoffeinspritzventil nach Anspruch 2, dadurch gekennzeichnet, daß der Materialabtrag als Flächenanschliff ausgebildet ist.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Querbohrung (11) des Kraftstoffzulaufkanals (7) im Haltekörper (1) rechtwinklig zu dessen Längsachse verläuft.
- Kraftstoffeinspritzventil nach den Ansprüchen 1 und 3, dadurch gekennzeichnet, daß der Flächenanschliff (21) rechtwinklig zur Krafteinleitungsachse (23) des seitlichen Druckanschlußes (13) angeordnet ist.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Übergangskanten (25) zwischen der Einformung (21) und dem übrigen radialen Umfangswandbereich des Haltekörpers (1) achsparallel zur Längsachse des Haltekörpers (1) verlaufen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19814501A DE19814501A1 (de) | 1998-04-01 | 1998-04-01 | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE19814501 | 1998-04-01 | ||
PCT/DE1998/003579 WO1999050553A1 (de) | 1998-04-01 | 1998-12-07 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1017938A1 EP1017938A1 (de) | 2000-07-12 |
EP1017938B1 true EP1017938B1 (de) | 2003-10-15 |
Family
ID=7863180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98966195A Expired - Lifetime EP1017938B1 (de) | 1998-04-01 | 1998-12-07 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Country Status (5)
Country | Link |
---|---|
US (1) | US6382186B1 (de) |
EP (1) | EP1017938B1 (de) |
JP (1) | JP2002500727A (de) |
DE (2) | DE19814501A1 (de) |
WO (1) | WO1999050553A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7021291B2 (en) * | 2003-12-24 | 2006-04-04 | Cummins Inc. | Juncture for a high pressure fuel system |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3845748A (en) * | 1972-09-29 | 1974-11-05 | Mack Trucks | Fuel injection nozzle holder installation |
ES480129A1 (es) * | 1978-07-01 | 1980-01-16 | Lucas Industries Ltd | Boquilla de inyeccion de combustible para motores de encen- dido por compresion. |
ATE36906T1 (de) * | 1984-08-08 | 1988-09-15 | Fischer Ag Georg | Anbohrformstueck zum anschluss einer abzweigleitung. |
US4846406A (en) * | 1987-12-04 | 1989-07-11 | Wade Manufacturing Co. | Micro flow control valve for irrigation systems and method |
DE9206268U1 (de) | 1992-05-09 | 1993-09-09 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffzuleitungseinrichtung für eine Einspritzdüse |
DE4239173C1 (en) * | 1992-11-21 | 1993-09-02 | Mercedes-Benz Aktiengesellschaft, 70327 Stuttgart, De | Cylinder-head for fuel-injection engine - has pressure pipe passing through clamping screw and with union at protruding end for injection pipe |
US6126208A (en) * | 1997-03-03 | 2000-10-03 | Usui Kokusai Sangyo Kaisha Limited | Common rail and method of manufacturing the same |
DE19728111A1 (de) * | 1997-07-02 | 1999-01-07 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem |
-
1998
- 1998-04-01 DE DE19814501A patent/DE19814501A1/de not_active Withdrawn
- 1998-12-07 WO PCT/DE1998/003579 patent/WO1999050553A1/de active IP Right Grant
- 1998-12-07 DE DE59809937T patent/DE59809937D1/de not_active Expired - Fee Related
- 1998-12-07 US US09/424,920 patent/US6382186B1/en not_active Expired - Fee Related
- 1998-12-07 EP EP98966195A patent/EP1017938B1/de not_active Expired - Lifetime
- 1998-12-07 JP JP54869099A patent/JP2002500727A/ja not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE59809937D1 (de) | 2003-11-20 |
DE19814501A1 (de) | 1999-10-07 |
WO1999050553A1 (de) | 1999-10-07 |
US6382186B1 (en) | 2002-05-07 |
EP1017938A1 (de) | 2000-07-12 |
JP2002500727A (ja) | 2002-01-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE10355030A1 (de) | Ventil, insbesondere für eine Hochdruckpumpe einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
WO2010086330A1 (de) | Geometrie zur festigkeitssteigerung bei bohrungsverschneidungen im hochdruckbereich | |
DE102005059169A1 (de) | Kraftstoffinjektor mit direkt betätigbarem Einspritzventilglied | |
EP3245433B1 (de) | Verbindungsanordnung zum ausbilden einer hydraulischen verbindung | |
DE4225350A1 (de) | Kraftstoffeinspritzpumpe für Brennkraftmaschinen | |
EP1407133B1 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen | |
EP1068443A2 (de) | Druckventil | |
EP1433951A1 (de) | Kraftstoffeinspritzventil für Brennkraftmaschinen | |
EP1017938B1 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen | |
DE10322826A1 (de) | Kraftstoffeinspritzventil für Brennkraftmaschinen | |
WO2005066487A1 (de) | Verfahren zum festziehen einer düsenspannmutter eines injektors für die kraftstoffeinspritzung sowie injektor und düsenspannmutter | |
EP1062423B1 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen | |
DE19736191A1 (de) | Druckbehälter mit Anschlußbohrung | |
EP1422418B1 (de) | Kraftstoffeinspritzventil für Brennkraftmaschinen | |
EP1241348B1 (de) | Hochdruckanschluss für ein Kraftstoffeinspritzsystem | |
DE102007041950B4 (de) | Ventilanordnung, für eine hydrostatische Kolbenmaschine | |
DE10307873A1 (de) | Sackloch- und Sitzloch-Einspritzdüse für eine Brennkraftmaschine mit einem Übergangskegel zwischen Sackloch und Düsennadelsitz | |
AT512893B1 (de) | Bauelement mit ineinandermündenden Hochdruckbohrungen | |
DE10346845B4 (de) | Kraftstoffeinspritzventil für Brennkraftmaschinen | |
EP1880100B1 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen | |
WO2006128757A1 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen | |
DE102018119419A1 (de) | Pleuel für eine Brennkraftmaschine mit einer Exzenter-Verstelleinrichtung zur Verstellung einer effektiven Pleuelstangenlänge | |
DE20320869U1 (de) | Einspritzventil mit Ventilhaltekörper mit optimierter Anlagefläche | |
DE2943744A1 (de) | Kraftstoffeinspritzduese fuer brennkraftmaschinen | |
WO2003046367A1 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20000407 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
17Q | First examination report despatched |
Effective date: 20020902 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031015 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 59809937 Country of ref document: DE Date of ref document: 20031120 Kind code of ref document: P |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20031015 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20040716 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20051220 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20060221 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070703 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20070831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070102 |