EP0369151A1 - Pompe d'injection combinée avec l'injecteur et dispositif de fixation - Google Patents
Pompe d'injection combinée avec l'injecteur et dispositif de fixation Download PDFInfo
- Publication number
- EP0369151A1 EP0369151A1 EP89118437A EP89118437A EP0369151A1 EP 0369151 A1 EP0369151 A1 EP 0369151A1 EP 89118437 A EP89118437 A EP 89118437A EP 89118437 A EP89118437 A EP 89118437A EP 0369151 A1 EP0369151 A1 EP 0369151A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- housing
- nozzle
- head
- fastening device
- 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.)
- Granted
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
- F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the invention relates to pump nozzles for multi-cylinder internal combustion engines, in which an injection pump element and an injection nozzle element are combined by a pump housing, which is clamped down in a stepped bore in the cylinder head, and by a fastening device which brings about this low clamping.
- the invention relates to high-pressure injection nozzles with electrically or hydraulically actuated actuators for quantity and / or spray adjustment, which are enclosed in a pressure-tight manner by a head housing and their fastening.
- the position of the holes in the flange for each engine type must be specifically determined according to the specific circumstances, which means that a large number of different designs of a pump nozzle must be kept in stock and many holes must be machined in the cylinder head, which weaken them structurally.
- the end parts of the clamping bracket are spherical, differences in height between the projections of the pump nozzles can be compensated for.
- FIG. 1 shows a longitudinal section through the cylinder head wall
- FIG. 2 shows a greatly simplified plan view of FIG. 1
- FIG. 3 shows an arrangement of the same component parts with a larger cylinder spacing.
- a pump nozzle (2) in section and a pump nozzle (3) are shown in view in a cylinder head wall (1). Both are driven by a camshaft, not shown, via thrust pieces (4) from the engine.
- the pump nozzles (2, 3) are surrounded by a pump housing (5) which is inserted in a stepped bore (6) in the cylinder head wall (1). Seals and fuel supply and discharge to and from the pump nozzle are not shown for the sake of simplicity.
- the pump housing (5) contains a pump piston sleeve (7) in which a piston (8) works.
- the pump housing (5) is sealed off at the top by a head housing (13) which contains an electromagnetic drive (14) for the actuator (15), which here, for example, causes the pump piston (8) to rotate.
- the inside of the pump housing (5) and head housing (13) is completely filled with fuel.
- the working movement of the guide sleeve (9) prevails in the annular space (10) a pulsating pressure that can reach 25 bar. This propagates through the electromagnetic drive (14) into the head space (12). This creates a pulsating force there that tries to lift the head housing (13) from the pump housing (5).
- the head housing (13) has projections (20) on opposite sides with horizontal engagement surfaces (21) for clamping brackets (22).
- the clamping bracket (22) have spherical end parts (23) which rest on the contact surfaces (21).
- a expansion screw (24) engages via a spherical washer (26), which ensures that the pump nozzle (2, 3) is clamped down on the cylinder head wall (1).
- Fig. 2 it can be seen that the clamping bracket (22) are inclined at an angle (25) relative to the direction of the motor axis (27). Where the clamping brackets (22) engage on the attack surface (21) is not critical. This makes it possible to use identical pump nozzles (2, 3) and clamping brackets (22) according to FIG. 3 even with a larger cylinder spacing (28), a different angle (25) resulting which can also be 0 °. With even larger cylinder distances, longer clamping brackets (22) can of course also be used.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Jet Pumps And Other Pumps (AREA)
- Nozzles (AREA)
- Fertilizing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89118437T ATE87995T1 (de) | 1988-11-14 | 1989-10-04 | Pumpduese und befestigungsvorrichtung dafuer. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8814249U | 1988-11-14 | ||
DE8814249U DE8814249U1 (de) | 1988-11-14 | 1988-11-14 | Pumpedüse und Befestigungsvorrichtung dafür |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0369151A1 true EP0369151A1 (fr) | 1990-05-23 |
EP0369151B1 EP0369151B1 (fr) | 1993-04-07 |
Family
ID=6829869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89118437A Expired - Lifetime EP0369151B1 (fr) | 1988-11-14 | 1989-10-04 | Pompe d'injection combinée avec l'injecteur et dispositif de fixation |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0369151B1 (fr) |
AT (1) | ATE87995T1 (fr) |
DE (2) | DE8814249U1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4222081A1 (de) * | 1992-07-04 | 1994-01-05 | Kloeckner Humboldt Deutz Ag | Dieselbrennkraftmaschine |
US5697345A (en) * | 1994-12-28 | 1997-12-16 | Cummins Engine Company, Inc. | Clamping load distributor for a fuel injector |
US5706786A (en) * | 1994-12-28 | 1998-01-13 | Cummins Engine Company, Inc. | Distortion reducing load ring for a fuel injector |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2466115B1 (fr) * | 2010-12-15 | 2015-07-08 | FPT Industrial S.p.A. | Système de fixation d'un injecteur sur la culasse de moteur d'un véhicule, procédé de fixation de l'injecteur et procédé de fabrication du système |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2072744A (en) * | 1980-03-07 | 1981-10-07 | Brunswick Corp | Two-cycle engine with fuel injection |
EP0057674A2 (fr) * | 1981-02-02 | 1982-08-11 | Friedmann & Maier Aktiengesellschaft | Pompe d'injection de combustible pour moteurs à combustion interne, notamment moteurs Diesel |
-
1988
- 1988-11-14 DE DE8814249U patent/DE8814249U1/de not_active Expired
-
1989
- 1989-10-04 DE DE8989118437T patent/DE58904013D1/de not_active Expired - Fee Related
- 1989-10-04 AT AT89118437T patent/ATE87995T1/de not_active IP Right Cessation
- 1989-10-04 EP EP89118437A patent/EP0369151B1/fr not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2072744A (en) * | 1980-03-07 | 1981-10-07 | Brunswick Corp | Two-cycle engine with fuel injection |
EP0057674A2 (fr) * | 1981-02-02 | 1982-08-11 | Friedmann & Maier Aktiengesellschaft | Pompe d'injection de combustible pour moteurs à combustion interne, notamment moteurs Diesel |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4222081A1 (de) * | 1992-07-04 | 1994-01-05 | Kloeckner Humboldt Deutz Ag | Dieselbrennkraftmaschine |
DE4222081C2 (de) * | 1992-07-04 | 2003-09-04 | Deutz Ag | Dieselbrennkraftmaschine |
US5697345A (en) * | 1994-12-28 | 1997-12-16 | Cummins Engine Company, Inc. | Clamping load distributor for a fuel injector |
US5706786A (en) * | 1994-12-28 | 1998-01-13 | Cummins Engine Company, Inc. | Distortion reducing load ring for a fuel injector |
Also Published As
Publication number | Publication date |
---|---|
DE8814249U1 (de) | 1989-01-19 |
EP0369151B1 (fr) | 1993-04-07 |
ATE87995T1 (de) | 1993-04-15 |
DE58904013D1 (de) | 1993-05-13 |
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