EP1431565A1 - Rückführleitungsverschaltung einer Hochdruckpumpe einer Kraftstoffversorgungsanlage für eine Brennkraftmaschine - Google Patents
Rückführleitungsverschaltung einer Hochdruckpumpe einer Kraftstoffversorgungsanlage für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP1431565A1 EP1431565A1 EP03025166A EP03025166A EP1431565A1 EP 1431565 A1 EP1431565 A1 EP 1431565A1 EP 03025166 A EP03025166 A EP 03025166A EP 03025166 A EP03025166 A EP 03025166A EP 1431565 A1 EP1431565 A1 EP 1431565A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- valve
- tank
- internal combustion
- combustion engine
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 19
- 239000000446 fuel Substances 0.000 title claims description 20
- 238000009423 ventilation Methods 0.000 claims abstract description 45
- 239000002828 fuel tank Substances 0.000 claims abstract description 3
- 238000013022 venting Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0041—Means for damping pressure pulsations
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
-
- 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
- F02M55/007—Venting means
-
- 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
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
Definitions
- the invention relates to a return line connection of a high pressure pump a fuel supply system for an internal combustion engine the preamble of the first claim.
- the technical environment turns on referred to DE 100 05 589 A1.
- a high-pressure fuel pump is described there, with the interposition of a shut-off valve branches off a leakage line, which in a return line leading into the tank opens and via the small one Leakage quantities of fuel from the high pressure pump are discharged.
- the normally closed shut-off valve is therefore in the leakage line used in the shutdown phase of a direct-injection gasoline engine not cause a rapid drop in pressure in the fuel system and so on to improve the hot start behavior.
- Such a high pressure pump usually has a pressure damper / pressure regulator chamber, from which there is ventilation in the leakage line, too inside the pump, or in the intake air duct is known.
- the object of the invention is a return line connection of a high pressure pump a fuel supply system for an internal combustion engine To provide, which always ensures the full damper / controller function.
- the task is carried out with the characterizing features of the first claim solved. Further embodiments describe the dependent ones Expectations.
- a return line circuit is at least one High pressure pump of a fuel supply system for an internal combustion engine, with a pressure damper ventilation line and a leakage line are led from the high pressure pump to a fuel tank, the Leakage line by means of a valve when the internal combustion engine is not in operation is kept closed is characterized in that the Pressure damper ventilation line by means of an additional valve when not in operation located internal combustion engine connected to a tank ventilation line is.
- a preferred embodiment of the return line circuit is thereby characterized in that the valve and the further valve by a 3/2-way valve are formed, so between the leakage line, tank ventilation line and pressure damper ventilation line that is switched in its an operating position the high-pressure pump-side leakage line to Tank is open while a connection line between the pressure damper ventilation line and tank ventilation line is closed and in in its other operating position the leakage line is interrupted and the Pressure damper ventilation line to the tank ventilation line switched through is.
- Another preferred embodiment of the invention is characterized in that that two high pressure pumps to the valve and the further valve or are connected to the 3/2-way valve.
- This return line circuit is particularly suitable for V-engines.
- FIGS. 1 and 2 Two exemplary embodiments of return line interconnections of high-pressure pumps of fuel supply systems for internal combustion engines are shown in the attached FIGS. 1 and 2 and are explained below:
- Figures 1 and 2 differ only in the number of installed High pressure pumps HDP1 for Figure 1 and HDP1, HDP2 for Figure 2.
- the abbreviations and reference symbols used are otherwise for both Figures identical.
- only the return line circuit is in both figures of the high pressure pumps HDP1, HDP2.
- the complete fuel supply system for the internal combustion engine was waived, this is not part of the invention, but accordingly current state of the art. This includes in particular the indicated by opposite arrows 1, 1 ', 2, 2' only indicated low pressure and high-pressure connection of the high-pressure pumps HDP1, HDP2.
- the high pressure pump HDP1 is also with a pressure damper ventilation line 3 and a leakage line 4 equipped. These lines 3, 4 both lead into the tank 5, the pressure damper ventilation line 3 previously opens into the leakage line 4.
- a switching valve 6 interposed in the leakage line 4 is between the high-pressure pump HDP1 and the connection point of the pressure damper ventilation line 3 a switching valve 6 interposed.
- This switch valve 6 is a 3/2-way valve operating in a position as shown at non-operating internal combustion engine by the high pressure pump HDP1 coming leakage line 4 keeps closed and de-energized at the same time the pressure damper ventilation line 3 to the tank ventilation line 7 switches through.
- the leakage line 4 is switched through and like that Pressure damper ventilation line 3 to tank 5 opened while the connecting line 13 to the tank ventilation line 7 is closed.
- the tank ventilation line shown with the tank ventilation line 7 comprises starting from the tank 5, to the intake system 8 of the internal combustion engine, an activated carbon filter 9, which is vented into the environment 10 and a Tank vent valve 11.
- the leakage line 4 is closed on the high pressure pump side and the tank ventilation line 7 to the pressure damper ventilation line 3 and tank-side leakage line 4 switched through. This means that the Pressure in the fuel system remains. A flooding of the damper chambers the pressure damper 12 with fuel is prevented by ventilation through the Tank ventilation system by adding liquid fuel in the leakage line 4 runs from geodetically higher areas into the lower part and so clears the portion of the leakage line 4 used as a ventilation path.
- Valves instead of the switching valve 6, there are of course also two individual ones, not shown Valves conceivable.
- the Leakage line 4 is then by means of the valve when not in operation Internal combustion engine kept closed and the pressure damper ventilation line 3 is not in operation by means of the additional valve located internal combustion engine connected to the tank ventilation line 7.
- the connecting line 13 blocked to the tank ventilation line 7 and the leakage line 4 switched through to tank 5.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
Description
Claims (3)
- Rückführleitungsverschaltung mindestens einer Hochdruckpumpe (HDP1, HDP2) einer Kraftstoffversorgungsanlage für eine Brennkraftmaschine, mit der eine Druckdämpferbelüftungsleitung (3) und eine Leckageleitung (4) von der Hochdruckpumpe (HDP1, HDP2) zu einem Kraftstofftank (5) geführt sind, wobei die Leckageleitung (4) mittels eines Ventils bei nicht in Betrieb befindlicher Brennkraftmaschine verschlossen gehalten wird, dadurch gekennzeichnet, dass die Druckdämpferbelüftungsleitung (3) mittels eines weiteren Ventils bei nicht in Betrieb befindlicher Brennkraftmaschine zu einer Tankentlüftungsleitung (7) durchgeschaltet ist.
- Rückführleitungsverschaltung nach Anspruch 1, dadurch gekennzeichnet, dass, das Ventil und das weitere Ventil durch ein 3/2-Wegeventil gebildet werden, das so zwischen Leckageleitung (4), Tankentlüftungsleitung (7) und Druckdämpferbelüftungsleitung (3) geschaltet ist, dass in seiner einen Betriebsstellung die hochdruckpumpenseitige Leckageleitung (4) zum Tank hin geöffnet ist, während eine Verbindungsleitung (13) zwischen Druckdämpferbelüftungsleitung (3) und Tankentlüftungsleitung (7) geschlossen ist und in seiner anderen Betriebsstellung die Leckageleitung (4) unterbrochen und die Druckdämpferbelüftungsleitung (3) zur Tankentlüftungsleitung (7) durchgeschaltet ist.
- Rückführleitungsverschaltung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwei Hochdruckpumpen (HDP1, HDP2) an das Ventil und das weitere Ventil oder an das 3/2-Wegeventil angeschlossen sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10259685 | 2002-12-19 | ||
| DE10259685A DE10259685A1 (de) | 2002-12-19 | 2002-12-19 | Rückführleitungsverschaltung einer Hochdruckpumpe einer Kraftstoffversorgungsanlage für eine Brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1431565A1 true EP1431565A1 (de) | 2004-06-23 |
| EP1431565B1 EP1431565B1 (de) | 2005-05-25 |
Family
ID=32336487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03025166A Expired - Lifetime EP1431565B1 (de) | 2002-12-19 | 2003-11-04 | Rückführleitungsverschaltung einer Hochdruckpumpe einer Kraftstoffversorgungsanlage für eine Brennkraftmaschine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1431565B1 (de) |
| DE (2) | DE10259685A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0911513A1 (de) * | 1997-10-27 | 1999-04-28 | Mitsubishi Denki Kabushiki Kaisha | Hochdruck-Kraftstoffeinspritzpumpe mit Kraftstoffeinspritzung in den Motorzylinder |
| US5967120A (en) * | 1996-01-16 | 1999-10-19 | Ford Global Technologies, Inc. | Returnless fuel delivery system |
| DE10005589A1 (de) * | 2000-02-09 | 2001-08-16 | Bayerische Motoren Werke Ag | Kraftstoffversorgungsanlage für eine Brennkraftmaschine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8235999U1 (de) * | 1982-12-22 | 1983-06-23 | Gustav Wahler Gmbh U. Co, 7300 Esslingen | Volumenspeicher, insbesondere fuer gasfoermige oder fluessige brennstoffe |
| DE10125942A1 (de) * | 2001-05-29 | 2002-12-12 | Bosch Gmbh Robert | Kraftstoffsystem zum Zuliefern von Kraftstoff für eine Brennkraftmaschine, sowie Brennkraftmaschine |
-
2002
- 2002-12-19 DE DE10259685A patent/DE10259685A1/de not_active Withdrawn
-
2003
- 2003-11-04 EP EP03025166A patent/EP1431565B1/de not_active Expired - Lifetime
- 2003-11-04 DE DE50300579T patent/DE50300579D1/de not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967120A (en) * | 1996-01-16 | 1999-10-19 | Ford Global Technologies, Inc. | Returnless fuel delivery system |
| EP0911513A1 (de) * | 1997-10-27 | 1999-04-28 | Mitsubishi Denki Kabushiki Kaisha | Hochdruck-Kraftstoffeinspritzpumpe mit Kraftstoffeinspritzung in den Motorzylinder |
| DE10005589A1 (de) * | 2000-02-09 | 2001-08-16 | Bayerische Motoren Werke Ag | Kraftstoffversorgungsanlage für eine Brennkraftmaschine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10259685A1 (de) | 2004-07-01 |
| EP1431565B1 (de) | 2005-05-25 |
| DE50300579D1 (de) | 2005-06-30 |
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