EP0056916B1 - Vorrichtung zur Brennstoffeinspritzung in einen Verbrennungsmotor - Google Patents
Vorrichtung zur Brennstoffeinspritzung in einen Verbrennungsmotor Download PDFInfo
- Publication number
- EP0056916B1 EP0056916B1 EP81401902A EP81401902A EP0056916B1 EP 0056916 B1 EP0056916 B1 EP 0056916B1 EP 81401902 A EP81401902 A EP 81401902A EP 81401902 A EP81401902 A EP 81401902A EP 0056916 B1 EP0056916 B1 EP 0056916B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- pressure
- control
- injection
- piston
- 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
Links
- 238000002347 injection Methods 0.000 title claims abstract description 59
- 239000007924 injection Substances 0.000 title claims abstract description 59
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/025—Hydraulically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M59/02—Pumps 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
- F02M59/10—Pumps 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
- F02M59/105—Pumps 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 hydraulic drive
Definitions
- the subject of the present invention is a fuel injection device for an internal combustion engine, in particular for a diesel engine, allowing both a predosing of the quantity of fuel injected per cylinder and an amplification of the injection pressure.
- the injection device can be easily controlled by electronic means.
- Document DE-A-2 759 187 describes a similar fuel injection device.
- This device comprises control means for discharging a discharge chamber when the metered fuel has been subjected to the injection pressure.
- This device is constructed in such a way that before injection, the needle remains in the closed position, when the injection chamber is at the injection pressure prevailing in the dosing chamber.
- the fuel at the high-pressure control P c feeds via the line 37 a hydraulic accumulator 38, the chamber 22 of the spool valve 18 as well as the end chamber 26 of the same valve by means of a three-way solenoid valve. tracks 39 mounted in the bypass line 40.
- the high pressure fuel can pass from the chamber 22 into the chamber 23 depending on the position of the drawer and feed through the line 41, the control chamber 17 of the control system 12 with differential piston .
- the dispenser drawer 51 has two larger diameter portions 52 and 53 connected together by a rod 54 and moves in a bore comprising three chambers 55, 56 and 57 delimited by bearing surfaces as well as two pilot chambers 58 and 59 for moving the drawer.
- the first control chamber 58 is connected to the high control pressure by the line 61 which is itself connected to the line 42.
- the line 60 also makes it possible to convey the fuel at the high control pressure P c as far as the room 57.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Claims (2)
wobei die Abmessungen der genannten Auslasskammer (9) sowie die Eigenschaften der Einspritzdüse (1) derart sind, dass vor dem Einspritzen die Nadel (1) in Schliessstellung verbleibt, wenn die Einspritzkammer (5) mit dem Einspritzdruck beaufschlagt ist, der in der Dosierkammer (14) herrscht, wobei der hohe Steuerdruck den Steuerkolben (16) beaufschlagt und der Steuerdruck in der Auslasskammer (9) herrscht; dass der Querschnitt (Sd) der Auslasskammer (9), in der der Steuerdruck herrscht und die Schliessfeder (10) des Einspritzventils derart sind, dass die daraus resultierenden Kräfte, die dazu neigen, die Nadel in Schliessstellung zu halten, grösser als die Kraft sind, die zum Öffnen der Nadel neigt und die auf der Wirkung des Einspritzdrucks in der Dosierkammer (14) stammt, dadurch gekennzeichnet, dass die Steueranordnung zum Entleeren der Auslasskammer (9) einen Schiebeverteiler (51) aufweist, der vom hohen Steuerdruck gesteuert ist sowie von dem in der Dosierkammer (14) herrschenden Druck und dass der Schieber des Verteilers (51) einerseits unter der Wirkung des hohen Steuerdrucks steht, der in einer ersten Steuerkammer (58) herrscht und andererseits unter der Wirkung des in einer zweiten Steuerkammer (59) herrschenden Drucks steht, wobei die zweite Kammer mit einem unteren Durchlass (66) in Verbindung steht, der in der Dosierkammer (14) mündet und vom Füllkolben (13) verschlossen werden kann und mit einem oberen Durchlass (67) in Verbindung steht, der mit dem Niederdruck des Behälters in Verbindung steht und durch den Füllkolben (13) verschlossen werden kann, wobei einer der beiden genannten Durchlässe frei bleibt bei beliebiger Stellung des Füllkolbens (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT81401902T ATE21729T1 (de) | 1981-01-15 | 1981-12-01 | Vorrichtung zur brennstoffeinspritzung in einen verbrennungsmotor. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8100679 | 1981-01-15 | ||
| FR8100679A FR2497876B1 (fr) | 1981-01-15 | 1981-01-15 | Dispositif et procede d'injection de carburant pour moteur a combustion interne |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0056916A1 EP0056916A1 (de) | 1982-08-04 |
| EP0056916B1 true EP0056916B1 (de) | 1986-08-27 |
Family
ID=9254174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81401902A Expired EP0056916B1 (de) | 1981-01-15 | 1981-12-01 | Vorrichtung zur Brennstoffeinspritzung in einen Verbrennungsmotor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0056916B1 (de) |
| AT (1) | ATE21729T1 (de) |
| DE (1) | DE3175234D1 (de) |
| FR (1) | FR2497876B1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6575137B2 (en) | 1994-07-29 | 2003-06-10 | Caterpillar Inc | Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2541379B1 (fr) * | 1983-02-21 | 1987-06-12 | Renault | Perfectionnement aux systemes d'injection a commande electromagnetique pour moteur diesel de type pression-temps ou l'aiguille de l'injecteur est pilotee par la decharge puis la charge d'une capacite |
| DE19910970A1 (de) * | 1999-03-12 | 2000-09-28 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE19939428A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Durchführung einer Kraftstoffeinspritzung |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0032171A1 (de) * | 1980-01-12 | 1981-07-22 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen, insbesondere für Dieselmotoren |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2126777A1 (de) * | 1971-05-28 | 1972-12-14 | Bosch Gmbh Robert | Pumpe Düse zur Kraftstoffeinspritzung fur Brennkraftmaschinen |
| DE2126787C3 (de) * | 1971-05-28 | 1980-01-24 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
| US3983855A (en) * | 1973-07-12 | 1976-10-05 | C.A.V. Limited | Fuel injection system |
| DE2558789A1 (de) * | 1975-12-24 | 1977-07-14 | Bosch Gmbh Robert | Hochdruck-kraftstoffeinspritzeinrichtung fuer dieselmotoren |
| JPS53109021A (en) * | 1977-03-07 | 1978-09-22 | Nippon Denso Co Ltd | Fuel injection device for internal combustion engine |
| DE2759187A1 (de) * | 1977-12-31 | 1979-07-12 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage mit mindestens einem kraftstoffeinspritzventil, insbesondere fuer grossmotoren |
-
1981
- 1981-01-15 FR FR8100679A patent/FR2497876B1/fr not_active Expired
- 1981-12-01 EP EP81401902A patent/EP0056916B1/de not_active Expired
- 1981-12-01 DE DE8181401902T patent/DE3175234D1/de not_active Expired
- 1981-12-01 AT AT81401902T patent/ATE21729T1/de not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0032171A1 (de) * | 1980-01-12 | 1981-07-22 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen, insbesondere für Dieselmotoren |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6575137B2 (en) | 1994-07-29 | 2003-06-10 | Caterpillar Inc | Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3175234D1 (en) | 1986-10-02 |
| EP0056916A1 (de) | 1982-08-04 |
| FR2497876B1 (fr) | 1986-02-07 |
| FR2497876A1 (fr) | 1982-07-16 |
| ATE21729T1 (de) | 1986-09-15 |
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| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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