EP1105642A1 - Verfahren zur startabschaltung einer brennkraftmaschine - Google Patents
Verfahren zur startabschaltung einer brennkraftmaschineInfo
- Publication number
- EP1105642A1 EP1105642A1 EP98942474A EP98942474A EP1105642A1 EP 1105642 A1 EP1105642 A1 EP 1105642A1 EP 98942474 A EP98942474 A EP 98942474A EP 98942474 A EP98942474 A EP 98942474A EP 1105642 A1 EP1105642 A1 EP 1105642A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- combustion engine
- starter
- current
- time
- 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
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
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter 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
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/044—Starter current
Definitions
- the invention relates to a method for switching off an internal combustion engine with the features mentioned in the preamble of claim 1.
- starter motors are usually used, which are connected to a voltage source via a starter relay designed as a so-called engagement relay, and at the same time a pinion of the starter motor is brought into engagement with a ring gear of a flywheel of the internal combustion engine.
- a starter relay designed as a so-called engagement relay
- a pinion of the starter motor is brought into engagement with a ring gear of a flywheel of the internal combustion engine.
- an external switch for example an ignition switch or start switch of the motor vehicle.
- the starter motor After the internal combustion engine has reached self-running, the starter motor must be disengaged in order to prevent noise and wear.
- a manual start shutdown is known by releasing the ignition or start switch.
- solutions are known for automatically starting the internal combustion engine.
- DE 195 03 537 AI it is proposed in DE 195 03 537 AI to implement electronic detection of the self-running of the internal combustion engine by detecting the ripple of a battery voltage and / or a starter current.
- the absolute value of the battery voltage or the starter current is compared with a reference value in order to detect the self-running of the internal combustion engine. It is disadvantageous here that operating conditions of the internal combustion engine cannot be taken into account sufficiently, so that, for example, a cold start and a warm start of the internal combustion engine cannot be taken into account.
- the method according to the invention with the features mentioned in claim 1 offers the advantage that information about the operating state of the internal combustion engine is taken into account indirectly in order to determine the time of the start shutdown.
- a signal proportional to the starter current is used to determine the point in time of the start shutdown, whereby a characteristic curve is evaluated with a signal proportional to the starter current that is dependent on an operating state of the internal combustion engine, an optimized start shutdown is possible immediately after the internal combustion engine machine possible, so that a shortening of the starting time is achieved, especially when the internal combustion engine is warm.
- the method can be used in a simple manner for all internal combustion engines, with only an adaptation of the characteristic curves of the parameters determined by the operating state of the internal combustion engine being necessary.
- a battery voltage of a motor vehicle battery supplying the starter motor is evaluated as the signal proportional to the starter current. This makes it possible to optimize the time of the start shutdown without a speed information of a crankshaft of the internal combustion engine.
- Figure 1 shows the course of a starter current
- FIG. 1 shows the typical course of a starter current Ig of a starter motor of an internal combustion engine over time t.
- the starter current Ig rises to a first maximum value I at time t ] _.
- the starter current Ig changes into a ripple range before it changes into a current IQ after the internal combustion engine has run itself.
- the ripple of the starter current Ig is known to result from the compression and decompression phases of the internal combustion engine, which alternate during the starting phase. Starting from a time to, which is a defined distance from the time ti, for example 150 ms, the phases are recorded with a positive or negative slope of the starter current Ig.
- each starter current maximum I 2 , I 4 or Ig is assigned a voltage minimum at times t 2 , t and tg.
- the time period of the starter current starts with each maximum of the starter current I 2 , I 4 and Ig negative gradient determined and compared with a fixed time characteristic.
- An operating state of the internal combustion engine can be concluded from the first current maximum I ] _ of the starter current Ig. It is known, for example, that at different operating temperatures of the internal combustion engine, the first maximum I ] _ has a corresponding value which can be assigned to the operating temperatures.
- This information is further evaluated on the basis of the correlation shown in FIG. 2 between a crankshaft speed of the internal combustion engine and the starter current Ig.
- the characteristic curves in FIG. 2 represent the correlation of a crankshaft speed n with the starter current Ig.
- a closed freewheel clutch and quasi-stationary operation of the starter motor and the internal combustion engine are assumed.
- a total of three characteristics are plotted for three different operating temperatures, namely at -20 ° C, + 20 ° C and + 80 ° C. 10 denotes an area which defines the end area of a start-up support for the starter in a cold internal combustion engine.
- a characteristic curve 12 defines a minimum crankshaft speed n for self-running in a warm internal combustion engine.
- the resulting characteristic curves of the crankshaft speed n over the starter current Ig are converted into linearized characteristic curves.
- a "warm” characteristic curve is denoted by 14 and a “cold” characteristic curve running parallel thereto is denoted by 16.
- a good Correlation between the starter current Ig and the speed n results for temperatures> approx. 10 ° C and for a speed range n up to approx. 300 l / min.
- a switch-off criterion can be determined if no misfiring or combustion misfires occur. For temperatures ⁇ 0 ° C there is no intersection between the minimum required speed n and the starter current Ig.
- a time characteristic curve is formed for switching off the internal combustion engine. Different time characteristics for different operating states of the internal combustion engine, for example depending on an operating temperature, can be stored and processed. By defining an initial temperature Tj ⁇ r ⁇ t of, for example, 10 ° C, a distinction can be made between characteristics of> j ⁇ r j_ t and ⁇ T ⁇ r -L t . These characteristic curves are switched over, for example, by evaluating the current maxima 1 ⁇ , I2 of the starter current Ig, since these provide the information as to whether it is a cold or warm internal combustion engine.
- the amplitude of the maxima I ⁇ _ and I2, the time interval between the amplitudes t2 ⁇ t] _ and the difference I2-I1 can be a criterion for recognizing a warm or a cold internal combustion engine.
- the point in time at which the start is switched off is determined using a common characteristic curve, for example using a common characteristic curve for a warm and a cold internal combustion engine.
- the open one-way clutch can be detected over the course of the starter current Ig.
- the observation time up to which an open one-way clutch has to wait at least before the start can be switched off corresponds to the time for 0.8 to 1 half turn of the crankshaft at unchanged engine speed n without combustion torques, corresponding to the ignition interval for a 4-cylinder Internal combustion engine.
- the factor 0.8 results because the warm-up phase and the starter motor when the internal combustion engine is warm do not fall below approximately 20% of the internal combustion engine cycle time when the overrunning clutch is closed.
- a rotational speed determination of the rotational speed n can take place via the closed phase of the freewheel clutch that precedes an opening phase of the one-way clutch according to the correlation between the starter current Ig and the crankshaft speed n (warm characteristic curves).
- the corresponding starter current Ig results in a correspondingly smaller assigned speed value n. This is compensated at low internal combustion engine temperatures, in that the relative adhesion phase increases to 0% C to typically 50% or to 0 ° C to typically 70%. If one stays there at a factor of 0.8, an opening phase of the freewheel clutch is also safely bridged at negative temperatures.
- a cold internal combustion engine can be clearly detected via the high current level of the starter current Ig and a slight reduction between the current maxima 1 ⁇ and I2, so that a switch to a longer waiting time, i.e. a correspondingly different time characteristic, can be switched over.
- This has the advantage that, when the internal combustion engine is switched off, misfires (to a certain degree) do not lead to the internal combustion engine coming to a standstill. If necessary, in order to bridge at least one complete misfire in the time characteristic, a longer delay time can be set when the overrunning clutch is open.
- the starter current Ig is evaluated in that, after the starter motor has been connected to the voltage source (motor vehicle battery), a preliminary phase is faded out until time tg. Then the gradients of the starter current Ig are continuously evaluated by forming the current maxima I2, I 4 , Ig ... at the end of each phase with a positive slope. From the negative slope of the starter current Ig, these values form a delay time up to which the negative slope of the Starter current Ig must stop unchanged to trigger a power cut.
- the delay time with a smaller starter current Ig (higher temperature of the internal combustion engine) is automatically reduced via the stored characteristic curve, so that an excessively high speed value n at a higher temperature of the internal combustion engine is avoided at the time of switching off.
- the characteristic curves 14 and 16 shown in FIG. 2 can be determined as follows.
- the simplified (linearized) 'warm characteristic 1 according to FIG. 2 is:
- Tfenwarm [ms] the minimum delay time when the internal combustion engine is warm
- Door cold [ms] is the minimum delay time when the internal combustion engine is cold.
- U ß att is the open circuit voltage of the motor vehicle battery
- Ig the starter current
- Ri ß att the internal resistance of the motor vehicle battery
- Ri L the line resistance from the connection terminal to the motor vehicle battery.
- the internal battery resistance Ri ß att un ⁇ ⁇ the open circuit voltage U Ba tt are fundamentally dependent on the motor vehicle battery used, on the temperature and on the state of charge.
- the total non-linear relationship is obtained from the following table, wherein the open-circuit voltage U ßatt in volts and the battery internal resistance Ri ß att in milliohms indicated are:
- the line resistance RiL which is in series with the battery internal resistance Ri ß att, has a nominal resistance of 1 mOhm, corresponding to the cable length from the plus Connection of the motor vehicle battery up to the connection terminal of the starter motor. This value depends on the temperature coefficient of the cable material, i.e. usually copper.
- this assumption results in a safe switch-off criterion, since a larger current Ig is automatically estimated at low temperatures, and thus an enlarged time window until the switch-off is activated.
- U ß att is the open circuit voltage and Iverb e: Ln is the current of other electrical consumers connected at the start time.
- the voltage U_0 thus contains the battery idle voltage minus the voltage drop due to the electrical loads connected at this point in time.
- the required voltage window is between 10 V and +13 V.
- the main measurement of the voltage U takes place after 150 ms after the main contact of the starter motor has been closed, ie at time tg.
- Ig (U_0 - U_l) / 6 mOhm.
- a necessary voltage window is therefore 7 volts to +13 volts.
- the electrical auxiliary consumers in operation during the starting process must be systematically recorded and recorded over the entire time range of the starting process.
- the decisive factor here is the level and the course of the respective currents, since under certain circumstances the secondary electrical consumers can also be eliminated using a suitably dimensioned filter.
- FIG. 3 shows hatched time ranges, each of which corresponds to a time window in a phase of increasing voltage U.
- the phase of the rising voltage U corresponds, according to FIG. 1, to the phase of a falling starter current Ig, so that the same applies to the starter current Ig.
- the start shutdown of the internal combustion engine results after the time period has been exceeded within a rising phase of voltage U at time t & .
- the voltage U at the connection terminal of the starter motor is first measured at the time of the maximum value of the starter current Ig, ie the current I ] _ at the time t j _, at which the voltage U has its minimum m i n .
- ISTAG the estimated maximum starter current
- Ista the simulated maximum starter current
- U Batt the motor vehicle battery no-load voltage
- U m i n the minimum voltage at the terminal of the starter motor
- U xx the brush voltage of the starter motor plus induced voltage of the starter motor
- Ri G is the estimated internal battery resistance Ri ß att plus the line resistance RiL
- Ra is a contact resistance plus a ground-side line resistance plus a winding resistance of the starter motor and a portion of the starter brushes.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE1998/001815 WO2000001943A1 (de) | 1998-07-01 | 1998-07-01 | Verfahren zur startabschaltung einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1105642A1 true EP1105642A1 (de) | 2001-06-13 |
EP1105642B1 EP1105642B1 (de) | 2002-12-11 |
Family
ID=6918660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98942474A Expired - Lifetime EP1105642B1 (de) | 1998-07-01 | 1998-07-01 | Verfahren zur startabschaltung einer brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US6363899B1 (de) |
EP (1) | EP1105642B1 (de) |
JP (1) | JP4469498B2 (de) |
WO (1) | WO2000001943A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1214517A1 (de) * | 1999-09-10 | 2002-06-19 | Intra International AB | System und verfahren zum schutz eines anlasssystems |
SE524561C2 (sv) * | 2000-04-25 | 2004-08-24 | Intra Internat Ab | Strömmätningskrets med två mätområden |
JP2002295346A (ja) * | 2001-03-30 | 2002-10-09 | Mitsubishi Electric Corp | 自動車用スタータのオーバーラン防止装置および方法 |
US6799546B1 (en) | 2002-12-19 | 2004-10-05 | Brunswick Corporation | Starting procedure for an internal combustion engine |
US6987330B2 (en) * | 2003-04-16 | 2006-01-17 | Ford Global Technologies, Llc | Method and system for controlling a belt-driven integrated starter generator |
JP4641181B2 (ja) * | 2004-08-26 | 2011-03-02 | 株式会社オートネットワーク技術研究所 | バッテリ状態管理装置及びバッテリ状態管理方法 |
DE102007014377A1 (de) * | 2007-03-26 | 2008-10-02 | Bayerische Motoren Werke Aktiengesellschaft | Vorrichtung und Verfahren zum Starten einer Brennkraftmaschine |
DE102010040520A1 (de) * | 2010-09-09 | 2012-03-15 | Robert Bosch Gmbh | Verfahren zum Bestimmen eines Zustands eines Startermotors |
JP6364897B2 (ja) * | 2014-04-02 | 2018-08-01 | 株式会社デンソー | エンジン始動装置 |
US9500174B2 (en) * | 2014-04-03 | 2016-11-22 | Remy Technologies, L.L.C. | Internal combustion engine having a change of mind (COM) starter system and a COM starter system |
JP6590784B2 (ja) * | 2016-11-29 | 2019-10-16 | 本田技研工業株式会社 | 内燃機関の始動制御装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01253566A (ja) * | 1988-04-01 | 1989-10-09 | Mitsubishi Electric Corp | スタータ保護装置 |
DE19503537A1 (de) * | 1995-02-03 | 1996-08-08 | Bosch Gmbh Robert | Schaltungsanordnung für Startvorrichtung von Brennkraftmaschinen |
DE19647286B4 (de) * | 1995-11-22 | 2007-06-14 | Volkswagen Ag | Anlasser für eine Verbrennungskraftmaschine |
FR2746450B1 (fr) * | 1996-03-21 | 1998-06-12 | Valeo Equip Electr Moteur | Coupure d'un demarreur de vehicule automobile |
FR2754017B1 (fr) * | 1996-09-27 | 1998-12-18 | Valeo Electronique | Perfectionnements a la gestion de la coupure d'un demarreur de vehicule automobile |
FR2757220B1 (fr) * | 1996-12-13 | 1999-03-05 | Valeo Equip Electr Moteur | Perfectionnements aux procedes et aux systemes pour la commande de l'arret automatique d'un demarreur de vehicule automobile |
DE19722916C2 (de) * | 1997-05-31 | 2003-05-08 | Bosch Gmbh Robert | Verfahren zur Startabschaltung eines Startermotors einer Brennkraftmaschine |
-
1998
- 1998-07-01 EP EP98942474A patent/EP1105642B1/de not_active Expired - Lifetime
- 1998-07-01 JP JP2000558309A patent/JP4469498B2/ja not_active Expired - Lifetime
- 1998-07-01 US US09/446,467 patent/US6363899B1/en not_active Expired - Fee Related
- 1998-07-01 WO PCT/DE1998/001815 patent/WO2000001943A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0001943A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2002519587A (ja) | 2002-07-02 |
US6363899B1 (en) | 2002-04-02 |
WO2000001943A1 (de) | 2000-01-13 |
JP4469498B2 (ja) | 2010-05-26 |
EP1105642B1 (de) | 2002-12-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3901680C3 (de) | Verfahren zur Überwachung der Kaltstartfähigkeit der Starterbatterie eines Verbrennungsmotors und Schaltung zur Durchführung des Verfahrens | |
DE10107583A1 (de) | Verfahren zur Bestimmung der Leistungsfähigkeit einer Speicherbatterie | |
WO2011083108A1 (de) | Verfahren zur erkennung der startfähigkeit | |
EP1618398A1 (de) | Verfahren und vorrichtung zur vorhersage der startf higkeit eines fahrzeugs | |
EP1105642B1 (de) | Verfahren zur startabschaltung einer brennkraftmaschine | |
DE3007129C2 (de) | ||
EP2627893B1 (de) | Spannungssteuerung in einem bordnetz | |
EP0731879B1 (de) | Schaltungsanordnung und verfahren zur startwiederholung von brennkraftmaschinen | |
DE102004062939A1 (de) | Verfahren und Vorrichtung zum optimierten Starten eines Verbrennungsmotors | |
DE10056970A1 (de) | Verfahren und Anordnung zur Ermittlung der Startfähigkeit einer Starterbatterie eines Verbrennungsmotors | |
DE69718366T2 (de) | Verfahren und Vorrichtung zum Steuern eines Versorgungsschalters für einen Kraftfahrzeuganlasser | |
DE10147357B4 (de) | Anlasserschutzeinrichtung | |
DE69706101T2 (de) | Abschaltsystem für Kraftfahrzeug-Anlasser | |
DE19503537A1 (de) | Schaltungsanordnung für Startvorrichtung von Brennkraftmaschinen | |
DE102009047163A1 (de) | Schaltungsanordnung für eine Startvorrichtung | |
DE69705908T2 (de) | Verfahren und Vorrichtung zum Abschalten eines Fahrzeuganlassers | |
DE69202643T2 (de) | Steuervorrichtung für einen Anlasser eines Kraftfahrzeuges. | |
DE19701471A1 (de) | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers | |
DE19831723A1 (de) | Verfahren zur Ladezustanderkennung einer Fahrzeugbatterie | |
DE19722916C2 (de) | Verfahren zur Startabschaltung eines Startermotors einer Brennkraftmaschine | |
DE19821561A1 (de) | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers | |
DE4111875C2 (de) | Hilfsvorrichtung zum Starten eines Motors | |
DE60109089T2 (de) | Anlassverfahren für den verbrennungsmotor eines kraftfahrzeuges und anlassvorrichtung zur ausführung dieses verfahrens | |
DE10243567B4 (de) | Verfahren zur Ermittlung der Startfähigkeit eines Antriebssystems | |
DE102008043555A1 (de) | Verfahren einer Steuerung für eine Startvorrichtung, Computerprogrammprodukt und Steuerung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20010201 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): ES FR GB IT SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20020226 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): ES FR GB IT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021211 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030311 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20021211 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030627 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20030912 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20070726 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080701 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20170720 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Owner name: SEG AUTOMOTIVE GERMANY GMBH, DE Effective date: 20180315 |