WO1999009313A1 - Verfahren zum starten eines verbrennungsmotors - Google Patents
Verfahren zum starten eines verbrennungsmotors Download PDFInfo
- Publication number
- WO1999009313A1 WO1999009313A1 PCT/EP1998/004896 EP9804896W WO9909313A1 WO 1999009313 A1 WO1999009313 A1 WO 1999009313A1 EP 9804896 W EP9804896 W EP 9804896W WO 9909313 A1 WO9909313 A1 WO 9909313A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- internal combustion
- combustion engine
- starting
- valves
- valve
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/004—Aiding engine start by using decompression means or variable valve actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
Definitions
- the invention relates to a method for starting an internal combustion engine equipped with electromagnetically controllable intake and exhaust valves.
- the design specification DE 1 002 164 discloses an internal combustion engine with a special, electromagnetically actuated decompression valve which, when the internal combustion engine is started, is opened before a starter is switched on, is temporarily kept open during the towing of the internal combustion engine and is closed depending on a thermal self-interrupter. Decompression is intended to avoid unnecessary compression work during the starting process of the internal combustion engine.
- a similar arrangement with a decompression valve is described in the specification DE 1 010 320.
- the object of the invention is to provide a method of the type mentioned at the outset with which a suitably equipped internal combustion engine can be started with the lowest possible expenditure of energy and power.
- This object is achieved according to the invention by a method with the features of claim 1.
- a reliable start of the internal combustion engine is achieved in that, before the internal combustion engine is towed by an electric starter motor, the exhaust and intake valves are positioned in such a way that the peak electrical power requirement during the starting process can be kept comparatively low .
- the process is also particularly suitable for motors whose valves are in a neutral middle position between the open and closed positions when there is no power. It is particularly advantageous that by positioning at least one inlet valve of each combustion chamber in its open position, the combustion chambers are relieved of pressure during the towing process without the use of additional means.
- a further formed according to claim 2 method enables a gradual transition to the normal operation of the engine such that during this transition procedure of the Lei ⁇ stungs pack the engine auxiliary equipment is maintained low. This is particularly advantageous because power was removed from the electrical system of the vehicle already noticeably by the vorange ⁇ gangenen steps.
- a further formed according to claim 3 method includes on the one hand and on the other antesminimator an energy minimized procedure for positioning the engine valves in their set Posi ⁇ tion on.
- FIG. 1 is a flowchart of a method for starting an internal combustion engine, Fig. 2 schematically required for performing the method of FIG. 1 functional components of an internal combustion engine and
- FIG. 3 shows tent course diagrams of important engine parameters during the implementation of the method according to FIG. 1.
- FIG. 2 shows an internal combustion engine, for example for a motor vehicle, which is suitable for carrying out the method according to the invention and is designed as a multi-cylinder reciprocating piston engine 1. It has at least one intake valve 2 and at least one exhaust valve 3 per cylinder, each of which can be controlled electromagnetically.
- an electric starter motor (not shown) for towing the reciprocating piston engine 1 to a suitable starting speed and a central engine control unit 4 are provided, which among other things. serves to control the intake and exhaust valves 2, 3.
- the starter motor like the electromagnets 5 of the valves and other electrical vehicle components, is supplied with electrical energy from an electrical system, a conventional motor vehicle battery providing the energy for the electrical system when the reciprocating engine is at a standstill.
- the method according to the invention provides for switching on an ignition 7 as the first method step 11, whereupon in a next step 12 the engine control unit 4 causes the exhaust valves 3 of each engine cylinder to be closed.
- the engine control unit 4 queries the position of the exhaust valves and ends step 12 when all exhaust valves are closed.
- an intake valve 2 of each cylinder is controlled by the engine control unit 4 m in its open position. Any further intake valves are closed.
- the engine control unit 4 queries the position of the intake valves and ends step 13 when all intake valves have reached their desired position.
- the second step 12 and the third Step 13 can be carried out in the reverse order or at the same time, in the latter case, however, with somewhat increased power requirements.
- electromagnetically controllable inlet and outlet valves 2, 3 which have a rest position designed as a neutral central position, m by which they are held by the forces of a spring 9 acting in m valve opening direction and a spring 10 acting in m valve closing direction.
- These valves m in the form of electromagnetically switchable spring-mass floats can be moved m their respective target positions in particular by the two procedures described below.
- the first possibility is a minimal oscillation in the resonance frequency, an armature 6 permanently connected to the valve being alternately briefly attracted by a closing magnet 17 and an opening magnet 18 and thus stimulated by the energy storage effect of the opening and closing springs 9, 10 to resonate vibrations becomes.
- 2 shows the inlet valve 2 and the outlet valve 3 m in their closed positions, in each of which the associated closer magnet 17 is activated.
- the closing magnet 17 and the opening magnet 18 are alternately acted upon by moderate currents, as a result of which the respective valve 2, 3 m of its opening or closing position is carried out with the least possible power requirement on the vehicle electrical system .
- the respective valve After reaching the open or closed position, the respective valve can be held in this position with a low power requirement.
- the second procedure which minimizes energy consumption and must be carried out in a very short time of typically 2 ms to 3 ms, for positioning the electromagnetically controllable valves 2, 3 consists in pulling the armature 6 once by means of the corresponding make or break magnet 17 or 18.
- the stroke h e of the intake valve 2 and the stroke h a of the exhaust valve 3 of an exemplary cylinder of the reciprocating piston engine 1 are shown as a function of the time t during the starting process.
- the valves 2, 3 were initially positioned, immediately before, as shown in FIG. 3, the inlet valve 2 being positioned practically simultaneously in its open position and the outlet valve 3 in its closed position, each time once Tightening was carried out from the middle position.
- the reciprocating piston engine 1 is towed and synchronized with the aid of an electric starter motor in accordance with a step 14 in FIG. 1. This is done min ⁇ least until the engine 1 is a predetermined starting speed is reached, which is detected by the engine control unit 4 in a corresponding query to step 19.
- the intake valves 2 are first cylindrical selectively closed to provide the motor 1 gradually to normal operation switch ⁇ .
- the closing process for the inlet valves 2 takes place under the most favorable energetic conditions, for this purpose the opening magnet 18 is separated from the supply voltage and the closing spring 10 presses the armature 6 together with the valve into the closed position, where the armature is caught on the closing magnet 17 by a short-term catch current and then be held by this that can.
- the closing spring 10 has already absorbed its mechanical tension energy in a period of low electrical system load.
- the engine speed n and the pressure p of the exemplary cylinder which is the first to be switched over to normal operation after the starting speed of the reciprocating piston engine 1 has been reached, are illustrated in their time course.
- fuel is injected from the injection system 8 into the intake pipe of the relevant cylinder and the associated intake valve 2 is then closed.
- the exhaust valve of the cylinder in question is opened and the ejection process is initiated.
- the engine speed n increases as a result of the work performed by the cylinder in question.
- the advantages of the method according to the invention consist in the temporal distribution of maximum current consumption by the valve actuating magnet and the starter motor and in the energy-minimal compression-free towing of the reciprocating piston engine to its starting speed. It is particularly advantageous to provide the positioning of the valves, for example, as a function of the maximum power that can be demanded from the vehicle electrical system for a short time and before the electric starter motor is in operation. On the one hand, the maximum performance of the vehicle electrical system for the rapid positioning of the valves can be exploited, while holding the valves in their desired position is possible with a rather low power requirement, and on the other hand the positioning of the valves can be carried out either by oscillation in resonance frequency or by tightening once. There is no exhaust gas generated by cylinders that are already working in the exhaust pipe, which would prevent the exhaust valves from swinging open because of the risk of poisoning.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020007001249A KR20010022655A (ko) | 1997-08-20 | 1998-08-06 | 내연 기관 시동법 |
EP98946279A EP1005612A1 (de) | 1997-08-20 | 1998-08-06 | Verfahren zum starten eines verbrennungsmotors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19736137A DE19736137C1 (de) | 1997-08-20 | 1997-08-20 | Verfahren zum Starten eines Verbrennungsmotors |
DE19736137.4 | 1997-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999009313A1 true WO1999009313A1 (de) | 1999-02-25 |
Family
ID=7839569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/004896 WO1999009313A1 (de) | 1997-08-20 | 1998-08-06 | Verfahren zum starten eines verbrennungsmotors |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1005612A1 (de) |
KR (1) | KR20010022655A (de) |
DE (1) | DE19736137C1 (de) |
WO (1) | WO1999009313A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6357409B1 (en) * | 2000-05-23 | 2002-03-19 | Ford Global Technologies, Inc. | Method and system for starting a camless internal combustion engine |
US6492433B1 (en) | 2001-08-01 | 2002-12-10 | General Electric Company | Cost-effective performance enhancement of UV cured epoxysilicone release agents |
US6602901B2 (en) | 1998-10-21 | 2003-08-05 | Novo Nordisk A/S | Compounds useful in the treatment of conditions mediated by peroxisome proliferator-activated receptors (PPAR) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MY103358A (en) * | 1987-04-15 | 1993-06-30 | Novartis Ag | Process for the production of protiens. |
DE19742969C2 (de) * | 1997-09-29 | 2002-08-14 | Siemens Ag | Verfahren zum Starten einer Mehrzylinderbrennkraftmaschine |
DE19846974A1 (de) * | 1998-10-12 | 2000-04-13 | Bayerische Motoren Werke Ag | Elektromagnetischer Aktuator zur Betätigung eines Brennkraftmaschinen-Hubventils |
DE19922971A1 (de) * | 1999-05-19 | 2000-11-23 | Fev Motorentech Gmbh | Verfahren zur Inbetriebnahme eines elektromagnetischen Aktuators zur Betätigung eines Gaswechselventils an einer Kolbenbrennkraftmaschine |
JP3565100B2 (ja) * | 1999-08-10 | 2004-09-15 | 日産自動車株式会社 | エンジンの電磁動弁制御装置 |
DE19953513A1 (de) * | 1999-11-06 | 2001-05-23 | Bosch Gmbh Robert | Verfahren zum Steuern der Zylinderverdichtung während der Startphase einer Brennkraftmaschine |
JP3873559B2 (ja) * | 2000-01-21 | 2007-01-24 | 日産自動車株式会社 | エンジンの電磁動弁制御装置 |
DE10020104A1 (de) * | 2000-04-22 | 2001-10-31 | Bosch Gmbh Robert | Verfahren zum Starten einer mehrzylindrigen Brennkraftmaschine |
DE10024438A1 (de) * | 2000-05-19 | 2001-11-29 | Bosch Gmbh Robert | Startverfahren und Startvorrichtung für Brennkraftmaschinen |
JP3617414B2 (ja) * | 2000-06-06 | 2005-02-02 | 日産自動車株式会社 | 電磁駆動弁の制御装置 |
US6418003B1 (en) * | 2000-07-05 | 2002-07-09 | Ford Global Technologies, Inc. | Control methods for electromagnetic valve actuators |
DE10163629A1 (de) * | 2001-12-21 | 2003-07-10 | Zahnradfabrik Friedrichshafen | Kurbelwellenstarter-Verbrennungsmotor-System für ein Kraftfahrzeug |
DE10342703B4 (de) * | 2003-09-16 | 2013-09-26 | Robert Bosch Gmbh | Verfahren zum Starten einer mehrzylindrigen Brennkraftmaschine sowie Brennkraftmaschine |
JP2006257995A (ja) | 2005-03-17 | 2006-09-28 | Toyota Motor Corp | 電動可変動弁機構の制御装置 |
JP4289364B2 (ja) * | 2005-12-05 | 2009-07-01 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
GB2511601A (en) * | 2013-12-06 | 2014-09-10 | Daimler Ag | A starting method for a combustion engine of a motor vehicle |
DE102019107772A1 (de) | 2018-12-04 | 2020-06-04 | Bayerische Motoren Werke Aktiengesellschaft | Steuereinheit und Verfahren zum Betrieb eines Hybridantriebs |
DE102019115262A1 (de) * | 2019-06-05 | 2020-12-10 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Starten beziehungsweise Deaktivieren eines Verbrennungsmotors eines Kraftfahrzeugs sowie Verbrennungsmotor und Kraftfahrzeug |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1002164B (de) | 1954-05-25 | 1957-02-07 | Ianorisia Zuend Licht Ag | Brennkraftmaschine mit elektromagnetisch betaetigtem Dekompressionsventil |
DE1010320B (de) | 1954-05-14 | 1957-06-13 | Ianorisia Zuend Licht Ag | Kraftradmotor mit Anlasshilfseinrichtung |
EP0352861A2 (de) * | 1988-07-29 | 1990-01-31 | Magnavox Government and Industrial Electronics Company | Kraftfahrzeug-Führungsregler |
JPH0650247A (ja) | 1992-07-31 | 1994-02-22 | Kubota Corp | 多気筒ディーゼルエンジンの始動方法および装置 |
EP0724067A1 (de) * | 1995-01-27 | 1996-07-31 | Honda Giken Kogyo Kabushiki Kaisha | Steuervorrichtung für Brennkraftmaschinen |
-
1997
- 1997-08-20 DE DE19736137A patent/DE19736137C1/de not_active Revoked
-
1998
- 1998-08-06 WO PCT/EP1998/004896 patent/WO1999009313A1/de not_active Application Discontinuation
- 1998-08-06 KR KR1020007001249A patent/KR20010022655A/ko not_active Application Discontinuation
- 1998-08-06 EP EP98946279A patent/EP1005612A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1010320B (de) | 1954-05-14 | 1957-06-13 | Ianorisia Zuend Licht Ag | Kraftradmotor mit Anlasshilfseinrichtung |
DE1002164B (de) | 1954-05-25 | 1957-02-07 | Ianorisia Zuend Licht Ag | Brennkraftmaschine mit elektromagnetisch betaetigtem Dekompressionsventil |
EP0352861A2 (de) * | 1988-07-29 | 1990-01-31 | Magnavox Government and Industrial Electronics Company | Kraftfahrzeug-Führungsregler |
JPH0650247A (ja) | 1992-07-31 | 1994-02-22 | Kubota Corp | 多気筒ディーゼルエンジンの始動方法および装置 |
EP0724067A1 (de) * | 1995-01-27 | 1996-07-31 | Honda Giken Kogyo Kabushiki Kaisha | Steuervorrichtung für Brennkraftmaschinen |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6602901B2 (en) | 1998-10-21 | 2003-08-05 | Novo Nordisk A/S | Compounds useful in the treatment of conditions mediated by peroxisome proliferator-activated receptors (PPAR) |
US6357409B1 (en) * | 2000-05-23 | 2002-03-19 | Ford Global Technologies, Inc. | Method and system for starting a camless internal combustion engine |
US6492433B1 (en) | 2001-08-01 | 2002-12-10 | General Electric Company | Cost-effective performance enhancement of UV cured epoxysilicone release agents |
Also Published As
Publication number | Publication date |
---|---|
DE19736137C1 (de) | 1998-10-01 |
EP1005612A1 (de) | 2000-06-07 |
KR20010022655A (ko) | 2001-03-26 |
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