EP0073967A1 - Pompe d'injection de carburant pour moteurs à combustion interne - Google Patents
Pompe d'injection de carburant pour moteurs à combustion interne Download PDFInfo
- Publication number
- EP0073967A1 EP0073967A1 EP19820107462 EP82107462A EP0073967A1 EP 0073967 A1 EP0073967 A1 EP 0073967A1 EP 19820107462 EP19820107462 EP 19820107462 EP 82107462 A EP82107462 A EP 82107462A EP 0073967 A1 EP0073967 A1 EP 0073967A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve closing
- closing body
- spring
- bracket
- 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.)
- Withdrawn
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
- 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
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7771—Bi-directional flow valves
- Y10T137/7772—One head and seat carried by head of another
- Y10T137/7774—Supporting valve spring carried by supporting valve
- Y10T137/7776—Spring abuts guide for supported valve stem
Definitions
- the invention relates to a fuel injection pump for internal combustion engines according to the preamble of the main claim.
- injection pumps equipped with a constant pressure relief valve (CH-PS 394 710)
- the spring of the relief valve is supported by a screw part which is fastened in the sleeve-shaped section of the valve closing body.
- the disadvantage of this screw connection is that because of a possible loosening, the safe functioning of the injection pump is not always given, because parts of the valve falling into the pump work space can lead to serious damage to the injection pump and consequential damage to the internal combustion engine.
- the invention is based on the idea of using the hollow cylindrical wall of the valve closing body as an abutment.
- FIG. 1 shows in sections a fuel injection pump with the constant pressure relief valve according to the invention in an enlarged axial section and
- FIG. 2 shows a partial view of the valve closing body in the direction of arrow II in FIG. 1.
- FIG. 1 shows a pressure valve 9 acting as a constant pressure relief valve, the valve carrier 12 of which is fastened in a pump housing 10 with a valve seat ring surface 13 between a cylinder liner 11 and a pressure piece 14.
- a movable valve closing body 15 is pressed with its valve closing ring surface 13 against the valve support 12 via a return spring 17 and has a hollow cylindrical wall 16 which extends over a plurality of ribs 18 in the valve support 12.
- a relief valve 19 operating as a check valve is essentially formed by a movable valve closing member 19a designed as a ball and an annular valve closing surface 20 of the valve closing body 15.
- the valve closing body 15 has an expanding channel 21, which opens into the pressure line symbolized by an arrow 22, which leads to an injection valve, not shown.
- a piston 36 which is only partially shown in the cylinder liner 11, delimits a working space 23 for the fuel to be injected.
- the movable valve closing member 19 is pressed by a spring 28 via a first spring plate 33 against the valve closing surface 20 of the valve closing body 15 and is supported by a second spring plate 27 on a bracket which is formed by a bolt 24 in the example shown.
- the bolt 24 has a substantially circular cross-sectional basic cross section, has a flat recess 25 in its central section 26, which forms the spring plate 27 receives a spring 28 of the check valve, and each of the two end sections, designated 29, of the bolt 24 each has a flat 30, both of which are arranged plane-parallel to the recess 25.
- Two diametrically opposed openings 31 in the hollow cylindrical wall 16 serve as abutments for the bolt 24 and are formed by a bore drilled through the valve closing body 15 at right angles to a longitudinal axis 32.
- the two end sections 29 of the bolt 24 are supported, which is additionally provided with two lateral flats 34, which run parallel to its longitudinal axis and also parallel to the longitudinal axis 32 of the valve closing body 15, in order to enlarge the return flow cross section (see FIG. 2). Because of this flow-enhancing shape, the bolt 24 can also be more easily gripped and assembled, and it can also be manufactured as an inexpensive molded part. Since the diameter of the basic cross section of the bolt 24 is selected to be the same as the diameter of the bores 31, a sufficiently large contact surface 35 in the form of a section of a cylindrical jacket surface remains for the mounting of the bolt 24 in the bores 31.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3134971 | 1981-09-04 | ||
DE3134971 | 1981-09-04 | ||
DE19823221405 DE3221405A1 (de) | 1981-09-04 | 1982-06-05 | Kraftstoff-einspritzpumpe fuer brennkraftmaschinen |
DE3221405 | 1982-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0073967A1 true EP0073967A1 (fr) | 1983-03-16 |
Family
ID=25795765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19820107462 Withdrawn EP0073967A1 (fr) | 1981-09-04 | 1982-08-17 | Pompe d'injection de carburant pour moteurs à combustion interne |
Country Status (3)
Country | Link |
---|---|
US (1) | US4459086A (fr) |
EP (1) | EP0073967A1 (fr) |
DE (1) | DE3221405A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664084A (en) * | 1985-07-29 | 1987-05-12 | Teledyne Industries, Inc. | Fuel metering system |
US4714412A (en) * | 1983-07-27 | 1987-12-22 | Robert Bosch Gmbh | Fuel injection pump for internal combustion engines |
CN110107253A (zh) * | 2018-01-30 | 2019-08-09 | 中国石油化工股份有限公司 | 用于高温高压岩心流动实验的回压阀 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3341575C2 (de) * | 1983-11-17 | 1996-06-05 | Bosch Gmbh Robert | Druckventil für Kraftstoffeinspritzpumpen |
DE3603742A1 (de) * | 1985-02-06 | 1986-08-14 | Aisin Seiki K.K., Kariya, Aichi | Hydraulik-pumpen-aufbau in verbindung mit einem speicher |
IT206877Z2 (it) * | 1985-10-22 | 1987-10-12 | Weber Spa | Valvola di mandata a pressione costante per pompe di iniezione del combustibile per motori a ciclo diesel |
JPS63151972U (fr) * | 1987-03-27 | 1988-10-05 | ||
ES2035324T3 (es) * | 1988-01-16 | 1993-04-16 | Lucas Industries Public Limited Company | Valvula de control de presion. |
DE19706591A1 (de) * | 1997-02-20 | 1998-08-27 | Bosch Gmbh Robert | Druckventil |
DE19941688C2 (de) * | 1999-09-01 | 2001-08-09 | Siemens Ag | Einspritzeinrichtung für eine Brennkraftmaschine mit Direkteinspritzung |
DE10346813B4 (de) * | 2003-10-06 | 2013-08-29 | I F M Electronic Gmbh | Optoelektronischer Sensor und Verfahren zur Detektion eines Objekts in einem Überwachungbereich |
IT1394070B1 (it) * | 2009-05-13 | 2012-05-25 | Bosch Gmbh Robert | Gruppo valvola per controllare l'alimentazione e la mandata di combustibile di una camera di compressione di una pompa a pistoni di alta pressione e pompa a pistoni di alta pressione comprendente tale gruppo valvola |
US9181944B2 (en) * | 2011-03-31 | 2015-11-10 | Denso Corporation | High pressure pump having unitary discharge and relief valve |
JP5920636B2 (ja) * | 2013-09-13 | 2016-05-18 | 株式会社デンソー | 高圧ポンプ |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1999967A (en) * | 1933-03-29 | 1935-04-30 | Ingersoll Rand Co | Valve mechanism |
US2247421A (en) * | 1938-06-18 | 1941-07-01 | Eisemann Magneto Corp | Pressure regulator for fuel injection systems for internal combustion engines |
CH394710A (de) * | 1962-08-09 | 1965-06-30 | Schweizerische Lokomotiv | Brennstoffeinspritzpumpe für Brennkraftmaschinen |
US3309024A (en) * | 1965-01-07 | 1967-03-14 | Int Harvester Co | Fuel delivery valve and injection apparatus employing same |
DE1297935B (de) * | 1965-06-03 | 1969-06-19 | Kloeckner Humboldt Deutz Ag | Kraftstoffeinspritzsystem |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1202545B (de) * | 1962-07-21 | 1965-10-07 | Ludwig Rexroth | Druckregler |
-
1982
- 1982-06-05 DE DE19823221405 patent/DE3221405A1/de not_active Withdrawn
- 1982-08-17 EP EP19820107462 patent/EP0073967A1/fr not_active Withdrawn
- 1982-08-25 US US06/411,227 patent/US4459086A/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1999967A (en) * | 1933-03-29 | 1935-04-30 | Ingersoll Rand Co | Valve mechanism |
US2247421A (en) * | 1938-06-18 | 1941-07-01 | Eisemann Magneto Corp | Pressure regulator for fuel injection systems for internal combustion engines |
CH394710A (de) * | 1962-08-09 | 1965-06-30 | Schweizerische Lokomotiv | Brennstoffeinspritzpumpe für Brennkraftmaschinen |
US3309024A (en) * | 1965-01-07 | 1967-03-14 | Int Harvester Co | Fuel delivery valve and injection apparatus employing same |
DE1297935B (de) * | 1965-06-03 | 1969-06-19 | Kloeckner Humboldt Deutz Ag | Kraftstoffeinspritzsystem |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4714412A (en) * | 1983-07-27 | 1987-12-22 | Robert Bosch Gmbh | Fuel injection pump for internal combustion engines |
US4664084A (en) * | 1985-07-29 | 1987-05-12 | Teledyne Industries, Inc. | Fuel metering system |
CN110107253A (zh) * | 2018-01-30 | 2019-08-09 | 中国石油化工股份有限公司 | 用于高温高压岩心流动实验的回压阀 |
Also Published As
Publication number | Publication date |
---|---|
DE3221405A1 (de) | 1983-03-24 |
US4459086A (en) | 1984-07-10 |
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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: 19820817 |
|
AK | Designated contracting states |
Designated state(s): AT DE FR GB IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19840405 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SCHENK, BERNHARD Inventor name: HAEFELE, WALTER |