DE102012203258A1 - Fuel system for combustion engine, has pressure relief vent provided as channel-like connecting channel in seal seat of pressure limiting valve, and is designed such that connecting channel is opened during closed pressure limit valve - Google Patents
Fuel system for combustion engine, has pressure relief vent provided as channel-like connecting channel in seal seat of pressure limiting valve, and is designed such that connecting channel is opened during closed pressure limit valve Download PDFInfo
- Publication number
- DE102012203258A1 DE102012203258A1 DE201210203258 DE102012203258A DE102012203258A1 DE 102012203258 A1 DE102012203258 A1 DE 102012203258A1 DE 201210203258 DE201210203258 DE 201210203258 DE 102012203258 A DE102012203258 A DE 102012203258A DE 102012203258 A1 DE102012203258 A1 DE 102012203258A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- fuel
- channel
- connecting channel
- valve
- 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- Withdrawn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
- 239000000446 fuel Substances 0.000 title claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 title claims description 9
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 23
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
-
- 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
- F02M37/0023—Valves in the fuel supply and return system
- F02M37/0029—Pressure regulator in the low pressure fuel system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K2200/00—Details of valves
- F16K2200/40—Bleeding means in closed position of the valve, e.g. bleeding passages
- F16K2200/402—Bleeding means in closed position of the valve, e.g. bleeding passages arranged on the valve housing or seat
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Safety Valves (AREA)
Abstract
Description
Die Erfindung betrifft ein Kraftstoffsystem einer Brennkraftmaschine mit einer zumindest ein Kraftstoff-Einspritzventil versorgenden Hochdruckpumpe, der von einer Niederdruckpumpe Kraftstoff aus einem Vorratsbehälter zugeführt wird, sowie mit einem mechanisch arbeitenden Druckbegrenzungsventil, dessen Ventilkörper mittels eines Federelements gegen einen Dichtsitz gepresst wird und das bei Überschreiten eines Grenzdrucks im zwischen der Hochdruckpumpe und dem Einspritzventil liegenden Kraftstoff-Hochdruckbereich öffnet, um Kraftstoff in einen Kraftstoff-Niederdruckbereich, der durch den Vorratsbehälter oder den Bereich zwischen der Niederdruckpumpe und der Hochdruckpumpe gebildet ist, zu entlassen, und wobei weiterhin eine Druckentlastungseinrichtung in Form einer Entlastungsdrossel zwischen dem Hochdruckbereich und dem Niederdruckbereich vorgesehen ist. Zum Stand der Technik wird auf die
Die Funktion und Notwendigkeit einer Druckentlastungseinrichtung, die nach Abstellen der Brennkraftmaschine den hier sog. Kraftstoff-Hochdruckbereich entlastet, indem bspw. über eine einfache Entlastungsdrossel mit unveränderbarem Querschnitt stets eine sehr geringe Menge von Kraftstoff aus dem Hochdruckbereich in einen Kraftstoff-Niederdruckbereich gelangen kann, ist in der genannten
Probleme können sich jedoch mit einer solchen Entlastungsdrossel ergeben, wenn diese wegen des relativ engen Drosselquerschnitts verstopfen würde, wonach die gewünschte gezielte Entlastung nach Abstellen der Brennkraftmaschine unterbunden wäre und ein Druckabbau bei abgestellter Brennkraftmaschine dann nur noch über das oder ein Einspritzventil in den Brennraum der Brennkraftmaschine erfolgen könnte, was im Hinblick auf die sich damit bei einem Neustart der Brennkraftmaschine einstellenden Emissionen unerwünscht ist.However, problems can arise with such a relief throttle, if this would clog because of the relatively narrow throttle cross-section, after which the desired targeted relief would be stopped after stopping the engine and a pressure reduction when the engine is stopped then only via the or an injection valve into the combustion chamber of the engine could be done, which is undesirable in view of the thus adjusting at a restart of the internal combustion engine emissions.
Eine Abhilfemaßnahme für diese geschilderte Problematik aufzuzeigen, ist Aufgabe der vorliegenden Erfindung. Die Lösung dieser Aufgabe ist für ein Kraftstoffsystem nach dem Oberbegriff des Anspruchs 1 dadurch gekennzeichnet, dass die Druckentlastungseinrichtung als rinnenartiger Verbindungskanal im Dichtsitz des Druckbegrenzungsventils vorgesehen und solchermaßen ausgebildet ist, dass dieser Verbindungskanal bei geschlossenem Druckbegrenzungsventil offen ist. Dabei kann der Dichtsitz kegelförmig ausgebildet und der Verbindungskanal durch eine Nut in der Wand des Dichtsitzes gebildet sein.To point out a remedy for this problem is the object of the present invention. The solution to this problem is for a fuel system according to the preamble of claim 1, characterized in that the pressure relief device is provided as a groove-like connection channel in the sealing seat of the pressure relief valve and is designed such that this connection channel is open with the pressure relief valve closed. In this case, the sealing seat can be formed conical and the connecting channel can be formed by a groove in the wall of the sealing seat.
Die nähere Erläuterung erfolgt anhand der beigefügten Prinzipskizze, in der lediglich der mit der Bezugsziffer
Das vorliegende Druckbegrenzungsventil bzw. dessen Dichtsitz
Indem dieser rinnenartige und damit zum auf dem Dichtsitz
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 19539883 B4 [0001, 0002] DE 19539883 B4 [0001, 0002]
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210203258 DE102012203258A1 (en) | 2012-03-01 | 2012-03-01 | Fuel system for combustion engine, has pressure relief vent provided as channel-like connecting channel in seal seat of pressure limiting valve, and is designed such that connecting channel is opened during closed pressure limit valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210203258 DE102012203258A1 (en) | 2012-03-01 | 2012-03-01 | Fuel system for combustion engine, has pressure relief vent provided as channel-like connecting channel in seal seat of pressure limiting valve, and is designed such that connecting channel is opened during closed pressure limit valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102012203258A1 true DE102012203258A1 (en) | 2013-09-05 |
Family
ID=48985082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE201210203258 Withdrawn DE102012203258A1 (en) | 2012-03-01 | 2012-03-01 | Fuel system for combustion engine, has pressure relief vent provided as channel-like connecting channel in seal seat of pressure limiting valve, and is designed such that connecting channel is opened during closed pressure limit valve |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102012203258A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018091198A1 (en) * | 2016-11-16 | 2018-05-24 | Robert Bosch Gmbh | Valve assembly, brake system, and method for operating a valve assembly |
| WO2020052986A1 (en) * | 2018-09-13 | 2020-03-19 | Eto Magnetic Gmbh | Electromagnetic and piloted proportional valve |
| WO2021013507A1 (en) * | 2019-07-19 | 2021-01-28 | Robert Bosch Gmbh | High-pressure fuel pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3412746A1 (en) * | 1984-04-05 | 1985-10-17 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION SYSTEM |
| DE10236314A1 (en) * | 2001-09-08 | 2003-04-03 | Bosch Gmbh Robert | Motor vehicle internal combustion engine fuel injection, has throttle to balance pressure between fuel pump suction and feed inside during start up |
| DE102008040924A1 (en) * | 2008-08-01 | 2010-02-04 | Robert Bosch Gmbh | Pressure limiting valve for fuel supplying system, has valve unit, which is movably arranged in valve area of valve housing between two final positions |
| DE19539883B4 (en) | 1995-05-26 | 2011-06-01 | Robert Bosch Gmbh | Fuel supply system and method for operating an internal combustion engine |
| EP2232113B1 (en) * | 2007-12-12 | 2012-01-25 | Robert Bosch GmbH | Fuel line check valve |
-
2012
- 2012-03-01 DE DE201210203258 patent/DE102012203258A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3412746A1 (en) * | 1984-04-05 | 1985-10-17 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION SYSTEM |
| DE19539883B4 (en) | 1995-05-26 | 2011-06-01 | Robert Bosch Gmbh | Fuel supply system and method for operating an internal combustion engine |
| DE10236314A1 (en) * | 2001-09-08 | 2003-04-03 | Bosch Gmbh Robert | Motor vehicle internal combustion engine fuel injection, has throttle to balance pressure between fuel pump suction and feed inside during start up |
| EP2232113B1 (en) * | 2007-12-12 | 2012-01-25 | Robert Bosch GmbH | Fuel line check valve |
| DE102008040924A1 (en) * | 2008-08-01 | 2010-02-04 | Robert Bosch Gmbh | Pressure limiting valve for fuel supplying system, has valve unit, which is movably arranged in valve area of valve housing between two final positions |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018091198A1 (en) * | 2016-11-16 | 2018-05-24 | Robert Bosch Gmbh | Valve assembly, brake system, and method for operating a valve assembly |
| US11161490B2 (en) | 2016-11-16 | 2021-11-02 | Robert Bosch Gmbh | Valve assembly, brake system and method for operating a valve assembly |
| WO2020052986A1 (en) * | 2018-09-13 | 2020-03-19 | Eto Magnetic Gmbh | Electromagnetic and piloted proportional valve |
| WO2021013507A1 (en) * | 2019-07-19 | 2021-01-28 | Robert Bosch Gmbh | High-pressure fuel pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: F02M0037200000 Ipc: F02M0037000000 |
|
| R163 | Identified publications notified | ||
| R012 | Request for examination validly filed | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |