DE102008002462A1 - Fuel supply - Google Patents
Fuel supply Download PDFInfo
- Publication number
- DE102008002462A1 DE102008002462A1 DE200810002462 DE102008002462A DE102008002462A1 DE 102008002462 A1 DE102008002462 A1 DE 102008002462A1 DE 200810002462 DE200810002462 DE 200810002462 DE 102008002462 A DE102008002462 A DE 102008002462A DE 102008002462 A1 DE102008002462 A1 DE 102008002462A1
- Authority
- DE
- Germany
- Prior art keywords
- fuel
- fuel supply
- pressure
- supply line
- accumulator
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3082—Control of electrical fuel pumps
-
- 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
- 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
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
-
- 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
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
- F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
-
- 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
- F02M37/04—Feeding by means of driven pumps
- F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of the fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Es wird eine Kraftstoffversorgungseinrichtung für einen Verbrennungsmotor (10) in einem Kraftfahrzeug angegeben, die einen Kraftstofftank (11), eine elektrische Kraftstoffpumpe (12) zur Kraftstoffförderung in eine Kraftstoffzuleitung (13), ein Drucks(24) aufweist, die abhängig vom Druck in der Kraftstoffzuleitung (13) die Kraftstoffpumpe (12) derart steuert, dass sie bei Überschreiten einer oberen Druckschwelle abgeschaltet und bei Unterschreiten einer unteren Druckschwelle eingeschaltet wird. Zur Reduzierung des Kraftstoffverbrauchs schaltet die Steuereinheit (24) die Kraftstoffpumpe (12) auch immer dann ein, wenn Schubbetrieb des Verbrennungsmotors (10) vorliegt und der Druck in der Kraftstoffzuleitung (13) mindestens um einen vorgegebenen Betrag untere die obere Druckschwelle absinkt.The invention relates to a fuel supply device for an internal combustion engine (10) in a motor vehicle, comprising a fuel tank (11), an electric fuel pump (12) for delivering fuel to a fuel supply line (13), a pressure (24) dependent on the pressure in the vehicle Fuel supply line (13) controls the fuel pump (12) such that it is switched off when an upper pressure threshold is exceeded and turned on when falling below a lower pressure threshold. To reduce fuel consumption, the control unit (24) switches on the fuel pump (12) whenever overrun operation of the internal combustion engine (10) is present and the pressure in the fuel supply line (13) drops below the upper pressure threshold by at least a predetermined amount.
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einer Kraftstoffversorgungseinrichtung für einen Verbrennungsmotor in einem Kraftfahrzeug nach dem Oberbegriff des Anspruchs 1.The The invention is based on a fuel supply device for an internal combustion engine in a motor vehicle according to the preamble of claim 1.
Eine
bekannte Kraftstoffversorgungseinrichtung für einen Verbrennungsmotor
oder einer Brennkraftmaschine (
Offenbarung der ErfindungDisclosure of the invention
Die erfindungsgemäße Kraftstoffversorgungseinrichtung mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass der Energiebedarf der Kraftstoffpumpe weitgehend während des Schubbetriebs des Verbrennungsmotors gedeckt wird, in der der Pumpenstrom ohne Mehrverbrauch an Kraftstoff zur Verfügung steht und nunmehr erfindungsgemäß genutzt wird, den Druckspeicher bis zu einem oberen Druckschwellwert zu spannen, bei dem die Kraftstoffpumpe zur Verringerung der Stromaufnahme wieder abgeschaltet wird. Durch die Wahl der Betriebsphasen, in denen der Verbrennungsmotor im Schubbetrieb arbeitet, für das Aufladen oder Füllen des Druckspeichers wird eine merkbare Verbrauchsersparnis an Kraftstoff erzielt.The Fuel supply device according to the invention with the features of claim 1 has the advantage that the energy needs the fuel pump largely during overrun of the Internal combustion engine is covered, in which the pump current without additional consumption is available to fuel and now used in the invention will increase the accumulator up to an upper threshold pressure tension, in which the fuel pump to reduce power consumption is switched off again. By the choice of operating phases, in which the internal combustion engine works in overrun mode, for Charging or filling the accumulator becomes noticeable Consumption saved on fuel.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Kraftstoffversorgungseinrichtung möglich.By the measures listed in the further claims are advantageous developments and improvements in the claim 1 specified fuel supply possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist die Steuerung der Kraftstoffpumpe durch die Steuereinheit in der Weise festgelegt, dass die Abschaltung der Kraftstoffpumpe dann erfolgt, wenn der Kraftstoffdruck in der Kraftstoffleitung eine vorgegebene, obere Druckschwelle erreicht oder übersteigt und die Einschaltung der Kraftstoffpumpe dann erfolgt, wenn Schubbetrieb des Verbrennungsmotors vorliegt und der Kraftstoffdruck in der Kraftstoffzuleitung unter die obere Druckschwelle, vorzugsweise zumindest um einen vorgegebenen Betrag unter die obere Druckschwelle, absinkt oder der Kraftstoffdruck in der Kraftstoffzuleitung auf oder unter eine vorgegebene untere Druckschwelle abfällt. Das Vorsehen eines Minimalbetrages, um den im Schubbetrieb der Kraftstoffdruck unter die obere Druckschwelle absinken muss, damit die Kraftstoffpumpe eingeschaltete wird, ermöglicht einen definierten, stabilen Betrieb der Kraftstoffpumpe und verhindert deren flatterartiges, ständiges Ein- und Abschalten.According to one advantageous embodiment of the invention is the controller the fuel pump is set by the control unit in the way that the shutdown of the fuel pump then takes place when the Fuel pressure in the fuel line a predetermined upper Pressure threshold reaches or exceeds and the switch-on the fuel pump then takes place when overrun operation of the internal combustion engine present and the fuel pressure in the fuel supply line below the upper pressure threshold, preferably at least by a predetermined Amount below the upper threshold pressure, drops or the fuel pressure in the fuel supply line at or below a predetermined lower Pressure threshold drops. The provision of a minimum amount, in the overrun fuel pressure below the upper pressure threshold must decrease so that the fuel pump is turned on, allows a defined, stable operation of the fuel pump and prevents their flutterartiges, constant switching on and off.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist der Druckspeicher zwischen Kraftstoffpumpe und Kraftstoffzuleitung angeordnet und ist dem Druckspeicher ein in Förderrichtung öffnendes erstes Ventil vorgeschaltet und ein im Stillstand des Verbrennungsmotors geschlossenes zweites Ventil nachgeschaltet. Das erste Ventil, dass vorzugsweise ein Rückschlagventil ist, verhindert beim Abschalten der Kraftstoffpumpe einen Rückfluss des Kraftstoffs zur Kraftstoffpumpe und das zweite Ventil stellt beim Abschalten des Verbrennungsmotors sicher, dass der Druck im Druckspeicher gehalten wird, was zu einem verbesserten Startverhalten des Verbrennungsmotors beiträgt. Das zweite Ventil kann ein von einem Motorsteuergerät gesteuertes Absperrventil sein, dass während des Motorbetriebs geöffnet gehalten wird, kann aber auch als 3/2-Wege-Ventil ausgeführt werden, um beim Abstellen des Verbrennungsmotors zwar den Druck im Druckspeicher aufrechtzuerhalten, die Kraftstoffzuleitung jedoch druckfrei zu bekommen.According to one advantageous embodiment of the invention is the accumulator is arranged between the fuel pump and fuel supply line and is the pressure accumulator opening in the conveying direction first valve upstream and at a standstill of the internal combustion engine closed second valve downstream. The first valve that Preferably, a check valve prevents prevented when switching off the fuel pump to a reflux of the fuel Fuel pump and the second valve provides when switching off the Internal combustion engine sure that the pressure is kept in the accumulator which leads to an improved starting behavior of the internal combustion engine contributes. The second valve may be one of an engine control unit controlled shut-off valve that during engine operation is kept open, but can also be designed as a 3/2-way valve be to turn off the internal combustion engine while the pressure maintain in the accumulator, the fuel supply, however to get pressure-free.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung ist anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The The invention is based on an embodiment shown in the drawings explained in more detail in the following description. Show it:
Die
in
In
Die
Kraftstoffpumpe
Während
des Motorbetriebs wird bei permanent offenem zweiten Ventil
In
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES 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 The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - US 5701869 [0002] US 5701869 [0002]
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810002462 DE102008002462A1 (en) | 2008-06-17 | 2008-06-17 | Fuel supply |
PCT/EP2008/066786 WO2009152876A1 (en) | 2008-06-17 | 2008-12-04 | Fuel supply device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810002462 DE102008002462A1 (en) | 2008-06-17 | 2008-06-17 | Fuel supply |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008002462A1 true DE102008002462A1 (en) | 2009-12-24 |
Family
ID=40381892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810002462 Ceased DE102008002462A1 (en) | 2008-06-17 | 2008-06-17 | Fuel supply |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008002462A1 (en) |
WO (1) | WO2009152876A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010042312A1 (en) | 2010-10-12 | 2012-04-12 | Robert Bosch Gmbh | Fuel supply device for internal combustion engine in motor vehicle, has electric low-pressure feed pump for supplying fuel from fuel tank with feed pressure into fuel supply line |
DE112012007079B4 (en) * | 2012-10-31 | 2017-08-17 | Toyota Jidosha Kabushiki Kaisha | Vehicle travel control device |
US20190368449A1 (en) * | 2018-06-01 | 2019-12-05 | GM Global Technology Operations LLC | Returnless fuel system with accumulator |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9470195B2 (en) | 2012-12-18 | 2016-10-18 | Fca Us Llc | Fuel supply system with accumulator |
GB201302600D0 (en) | 2013-02-14 | 2013-04-03 | Ford Global Tech Llc | A method of controlling a fuel supply system |
US10260444B2 (en) | 2013-12-19 | 2019-04-16 | Fca Us Llc | Direct injection fuel system with controlled accumulator energy storage |
US10077733B2 (en) * | 2016-11-16 | 2018-09-18 | Ford Global Technologies, Llc | Systems and methods for operating a lift pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5701869A (en) | 1996-12-13 | 1997-12-30 | Ford Motor Company | Fuel delivery system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3453970B2 (en) * | 1995-12-12 | 2003-10-06 | 株式会社デンソー | Fuel supply device for internal combustion engine |
JP3223791B2 (en) * | 1996-04-10 | 2001-10-29 | トヨタ自動車株式会社 | Fuel supply device for internal combustion engine |
DE10058674A1 (en) * | 2000-11-25 | 2002-06-06 | Bosch Gmbh Robert | Method, computer program and control and / or regulating device for operating an internal combustion engine |
JP3786262B2 (en) * | 2002-04-16 | 2006-06-14 | 三菱電機株式会社 | Automotive fuel supply system |
-
2008
- 2008-06-17 DE DE200810002462 patent/DE102008002462A1/en not_active Ceased
- 2008-12-04 WO PCT/EP2008/066786 patent/WO2009152876A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5701869A (en) | 1996-12-13 | 1997-12-30 | Ford Motor Company | Fuel delivery system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010042312A1 (en) | 2010-10-12 | 2012-04-12 | Robert Bosch Gmbh | Fuel supply device for internal combustion engine in motor vehicle, has electric low-pressure feed pump for supplying fuel from fuel tank with feed pressure into fuel supply line |
DE112012007079B4 (en) * | 2012-10-31 | 2017-08-17 | Toyota Jidosha Kabushiki Kaisha | Vehicle travel control device |
US20190368449A1 (en) * | 2018-06-01 | 2019-12-05 | GM Global Technology Operations LLC | Returnless fuel system with accumulator |
CN110552825A (en) * | 2018-06-01 | 2019-12-10 | 通用汽车环球科技运作有限责任公司 | Return-free fuel system with accumulator |
Also Published As
Publication number | Publication date |
---|---|
WO2009152876A1 (en) | 2009-12-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20150302 |
|
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |