EP1266136A2 - Vorrichtung und verfahren zur regelung des energieangebots für die zündung in einer brennkraftmaschine - Google Patents
Vorrichtung und verfahren zur regelung des energieangebots für die zündung in einer brennkraftmaschineInfo
- Publication number
- EP1266136A2 EP1266136A2 EP01919142A EP01919142A EP1266136A2 EP 1266136 A2 EP1266136 A2 EP 1266136A2 EP 01919142 A EP01919142 A EP 01919142A EP 01919142 A EP01919142 A EP 01919142A EP 1266136 A2 EP1266136 A2 EP 1266136A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- control unit
- ignition
- output stage
- power loss
- central control
- 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
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P3/00—Other installations
- F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
- F02P3/04—Layout of circuits
- F02P3/05—Layout of circuits for control of the magnitude of the current in the ignition coil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P3/00—Other installations
- F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
- F02P3/04—Layout of circuits
- F02P3/05—Layout of circuits for control of the magnitude of the current in the ignition coil
- F02P3/051—Opening or closing the primary coil circuit with semiconductor devices
Definitions
- the invention is based on a device and a method for regulating the energy supply for ignition in an internal combustion engine according to the type of the independent claims. It is already a device or a method for regulating the energy supply for the
- the map is a function of the battery voltage and the engine speed.
- the DE patent application with the file number 199 563 81.0 describes a device and a method for ignition of an internal combustion engine, in which the switch-on time, that is to say the time difference between the switch-on edge in the signal line, which corresponds to the start of the current flow through the primary winding, and the time at which the primary current reaches a first threshold value is determined.
- the switch-on time is based on the Signals on the signal line and signals on one or more diagnostic lines that connect a central control unit to the ignition output stage are determined.
- the device according to the invention or the method according to the invention with the features of the independent claims has the advantage over the above that it is ensured that the ignition output stage does not overheat, i.e. that a maximum permissible power loss, which drops in the ignition output stage 13, is not exceeded and, on the other hand, there is sufficient energy available for the ignition.
- the priority is not to exceed the maximum power loss.
- the control can be done in both directions, i.e. in the direction of an increase or a decrease in the energy supply.
- the ignition power stage temperature can be determined on the basis of the power loss falling in the ignition power stage with the aid of the temperature of the environment of the ignition power stage, and in order to avoid damage, the ignition power stage must be switched off when the temperature of the ignition power stage is too high. It is advantageous here to determine the temperature of the surroundings of the ignition output stage by means of a temperature sensor, since this enables a very precise specification of the ambient temperature. It it is also advantageous to read the ambient temperature of the ignition output stage from a map from a memory unit of the central control unit on the basis of a predetermined value or as a function of specific operating states, since in this way no temperature sensor is required.
- FIG. 1 shows a device according to the invention for regulating the energy supply in the primary winding of an internal combustion engine ignition coil
- Figure 2 is a schematic equivalent circuit diagram for the primary winding of an ignition coil together with a connection to the battery voltage and a controllable switch
- Figure 3 shows another embodiment of an inventive device for controlling the energy supply in the primary winding of an internal combustion engine ignition coil
- Figure 4 is a diagram in which the primary current is plotted as a function of time.
- FIG. 1 shows a device for regulating the energy supply in the primary winding
- the ignition circuit 2 contains an ignition coil for each cylinder of the internal combustion engine with a primary winding 4 and a secondary winding 7, one side of the secondary winding 7 being connected to ground and the other side of the secondary winding 7 being connected to an electrode of the spark plug 10.
- the other electrode of the spark plug 10 is connected to ground.
- One side of the primary winding 4 is connected to the battery voltage (Ufc, a t) 9.
- the other side of the primary winding 4 is connected to a controllable switch 12, the controllable switch 12 being part of an ignition output stage 13.
- Switch 12 is designed as a power transistor, in which case the primary winding 4 with the collector of
- Power transistor is connected.
- the other output of the controllable switch is connected to the ground, preferably when using a power transistor as the controllable switch 12 the emitter of the power transistor is connected to the ground.
- the control input of the controllable switch 12, preferably the base of the power transistor, leads to a central control unit 16 via a signal line 14
- Central control unit 16 includes a computing unit 161, a storage unit 162, a control unit 163 and a switch-off unit 164, the switch-off unit 164 being connected to the ignition output stage 13 via a connecting line 19.
- the ignition output stage 13 is also connected to the central control unit 16 via a diagnostic line 15.
- the central control unit 16 first generates a signal edge via the
- the ignition output stage contains 13 signal-forming elements, preferably edge-forming elements, and also comparators and / or sensors which can compare sizes of the ignition circuits, preferably primary current and primary voltage, with threshold values.
- the ignition output stage 13 preferably contains a comparator which compares the primary current, that is to say the current through the primary winding 4 of the ignition coil, with a first threshold value II and, at the point in time at which the primary current exceeds the first threshold value II, by means of the comparator in the ignition output stage 13 existing edge-forming element sends an edge to the diagnostic line 15, which reaches the central control unit 16 via the diagnostic line 15.
- the Central control unit 16 further includes a time-processing unit which compares signals on the signal line and signals on the diagnostic line with a time counter and can thus determine time intervals.
- Comparator compares the primary current with this first threshold value II. As already explained, when this first threshold value II is exceeded, a signal is sent from the signal-forming element contained in the ignition output stage 13 via the diagnostic line 15 to the central control unit 16, preferably from an edge-forming unit Element of the ignition output stage 13 sent a flank over the diagnostic line 15 to the central control unit 16.
- the central control unit 16 uses a time-processing unit to compare the signals on the signal line 14 and on the diagnostic line 15 with a time counting unit, in particular the period between the edge on the signal line 14, which causes the controllable switch 12 to switch through, and the Edge that reaches the central control unit on the diagnostic line 15 by exceeding a first threshold value of the primary current on the diagnostic line 15.
- This time is referred to below as the switch-on time and corresponds to the time t3-tl in FIG. 4.
- an ignition circuit 2 is provided for each cylinder, each ignition circuit being connected to the central control unit by a signal line.
- the diagnostic line 15 starting from the ignition output stage 13 of each cylinder can either be connected directly to the central control unit 16 or, in a preferred exemplary embodiment, can be routed via a link module, not shown, in which the diagnostic lines of a plurality of cylinders are connected to form a diagnostic line, the link module then in turn over a
- Linkage diagnostic line is connected to the central control unit 16.
- the incoming diagnostic signals from each cylinder are linked in the correct chronological order.
- the link is described in detail in the patent application with the file number DE 199 56 381.0.
- FIG. 2 shows an equivalent circuit diagram for the primary winding 4 of the ignition coil. Also shown are the connections 9 to the battery voltage U] -, ⁇ and the controllable switch 12 and the link between the controllable switch 12 and the primary winding 4. The resistors and inductors present in the primary winding 4 can be changed from the battery voltage to the controllable switch 12 connected in series
- Scatter inductance 47 represent a line and winding resistance 45 and an active inductance 41.
- a short-circuit resistor 43 which represents the ohmic resistances which vary over the operating time of the primary winding 4.
- the Stray inductance 47 and the line and winding resistance 45 are known from the data of the primary coil.
- the primary current Ip 48 flows through the leakage inductance 47 and through the line and winding resistance 45. This primary current is divided by the active inductance 41 and the short-circuit resistor 43 connected in parallel into an active current Ih flowing through the active inductance 41 and a short-circuit current, that flows through the short-circuit resistor 43.
- the sum of both currents generates a power loss in the ignition output stage 13.
- the so-called active energy ie the energy that is actually available to the spark plug 10 for the pilot flame, is also generated in the active inductance 41. This is determined by the current flowing through the inductance at the time when the controllable switch locks. As already described above, the current flowing through the inductance rises continuously over the closing time.
- the short-circuit resistor 43 In the normal state, that is to say without any short circuits in the primary coil, the short-circuit resistor 43 is very large, ie only a very small, negligible current flows through the short-circuit resistor 43. However, if there are winding faults in the event of a fault, the value of the short-circuit resistor 43 drops and, especially shortly after the controllable switch 12 has been switched on, a large current flows through the short-circuit resistor 43 at the beginning of the closing time.
- the total current ie the sum of the currents over the Active inductance 41 and the short-circuit resistor 43, viewed in the event of a fault
- this total current is significantly increased, especially shortly after the controllable switch 12 has been switched through, in comparison to the normal state.
- exceeding a maximum temperature can destroy the ignition output stage 13.
- the energy lost in the short-circuit resistor and in the ignition output stage 13 leads to a reduction in the active energy with a constant closing time compared to the normal state, ie the energy available for the ignition is reduced, which can lead to misfires.
- the closing time can also be reduced, since the power loss in the ignition output stage 13 is thus reduced.
- the time between the start of the current flow through the primary winding, ie the switching of the controllable switch 12, and the switching off of the current flow through the primary winding, ie blocking the controllable switch 12, is called the closing time ts ⁇ g ß. Accordingly, in order to reduce the closing time, the time interval between the edge which switches through the controllable switch 12 and the edge which blocks the controllable switch 12 again is reduced.
- switching off the ignition output stage 13 or reducing the closing time can be provided with a time constant, that is to say that after the power loss threshold value has been exceeded for the first time and when it stops
- the subsequent treatment switching off or reduction of the closing time
- switching off or reduction of the closing time is only carried out after a certain time, since only a prolonged persistence of this condition leads to the destruction of the ignition output stage 13. It is advantageous here to avoid switching off the ignition power stage or reducing the closing time, which are based on faulty power loss or active energy values.
- the closing time is extended in accordance with the active energy reduction, so that due to a longer closing time, the current which is increased by the active inductance 41 at the time when the controllable switch 12 is blocked.
- the Active energy is increased, ie the ignition has a higher energy available, and the active energy reduction is minimized.
- the control of the closing time is carried out by the control unit 163. Since, due to an extended closing time, the additional power loss occurring in the ignition output stage 13 is increased, each time the closing time is increased, it is checked whether the power loss threshold value is exceeded.
- a reduction in the closing time is provided if a smaller reduction in the active energy is determined than at an earlier point in time. This reduction in the closing time is carried out by the control unit 163.
- the active energy should not, however, fall below an active energy threshold value, since misfiring can occur if the energy available to the ignition is too low. This causes the smooth running of the internal combustion engine to deteriorate.
- control unit 163 instead of regulating the closing time t g ⁇ g ⁇ , the control unit 163 regulates the voltage made available to the primary winding.
- the closing time or the voltage made available to the primary winding is changed in small steps in the desired direction by the control unit 163.
- a specific additional power loss occurring in the ignition output stage 13 can also be assigned by the central control unit 16 a power loss temperature which arises from the fact that ohmic heat is released in the ignition output stage 13.
- This Power loss temperature can be estimated and is contained in the memory unit 162 as a characteristic curve depending on the short-circuit resistance value R] ; Urz or depending on the additional power loss in the ignition output stage.
- the environment of the ignition circuit 2 has a certain ambient temperature, which depends, for example, on the weather conditions, the duration of operation of the internal combustion engine in the respective operating cycle and on other thermally coupled ohmic resistors located in the vicinity of the ignition circuit 2 and any cooling that may be present.
- Ambient temperature can be roughly estimated by a fixed, predetermined value or, depending on certain operating states, which is characterized, for example, by the duration of operation after switching on the internal combustion engine or by the temperature of the cooling water at the cylinder head, in a map in the memory unit 162 of the central control unit 16 be present.
- the ambient temperature can also be measured via a temperature sensor 20 in the vicinity of the ignition circuit 2, as shown in FIG. 3. The temperature sensor is connected to the central control unit 16 via the sensor line 18.
- the temperature sensor (20) uses the central control unit (16) to check whether the temperature sensor has plausible values for the ambient temperature. This can preferably be done in that the temperature determined by the temperature sensor (20) lies in a plausible temperature range. If the values for the ambient temperature determined by the temperature sensor are not plausible
- Temperature range it is assumed that the temperature sensor (20) or the sensor line (18) has a defect.
- the values for the ambient temperature used to determine the temperature of the ignition output stage are then read from a map or a fixed, predetermined value is used.
- the map is dependent on certain operating states, which are characterized, for example, by the duration of operation after switching on the internal combustion engine or by the temperature of the cooling water at the cylinder head, in the memory unit 162 of the central control unit 16.
- the temperature at the ignition output stage 13 can now be determined on the basis of the power loss temperature and the ambient temperature. It results from the sum
- Power dissipation temperature and ambient temperature It is determined by the computing unit 161 of the central control unit.
- the central control unit 16 now compares the temperature of the ignition output stage 13 with a temperature threshold. Is the temperature of the
- the ignition circuit is overheated and the ignition output stage 13 must be switched off. This is done by the switch-off unit 164, which is connected to the ignition output stage 13 via a connecting line 19, the
- Central control unit 16 initiates the shutdown of the ignition output stage 13 by the shutdown unit 164.
- a temperature-time constant can be provided, which will postpone the switch-off of the ignition output stage 13 by a certain, fixed time after the initial determination of the temperature threshold being exceeded.
- Winding resistances can be compensated for by increasing the voltage applied to the primary winding.
- the devices and methods described above can also be transferred to an internal combustion engine with a plurality of cylinders.
- each cylinder is assigned an ignition circuit 2, which is connected to the central control unit 16 via a signal line 14.
- a diagnostic line 15 extends from the ignition output stage 13 of each cylinder, via which the ignition output stage 13 is connected to the central control unit and via which the diagnostic signals can be transmitted.
- a preferred linkage of several diagnostic lines to one linkage diagnostic line has already been described above.
- the additional power loss is preferably the
- Ignition output stage 13 or the active energy reduction of each cylinder is carried out individually for the cylinder and thus the closing time control is also performed individually for the cylinder.
- the temperature of the ignition output stage 13 is preferably also determined individually for each cylinder, which is the case with
- the closing time extension value t verj _ ang which results from the temperature-related increase in the line and winding resistance, is also determined for each cylinder and at the closing time added.
- the time-processing unit which determines the
- the average power loss in the ignition output stage is dependent on other operating parameters, preferably on the speed.
- the additional power loss of the ignition output stage is also dependent on other operating parameters (in addition to the battery voltage dependency), preferably on the speed.
- the power loss temperature which is present in a characteristic diagram in the storage unit 162 is dependent on the short-circuit resistance value Rk urz and further parameters, preferably depending on the ambient temperature or on the time which has elapsed since the start of the internal combustion engine, or from the temperature of the cylinder head cooling water included.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10012956A DE10012956A1 (de) | 2000-03-16 | 2000-03-16 | Vorrichtung und Verfahren zur Regelung des Energieangebots für die Zündung einer Brennkraftmaschine |
DE10012956 | 2000-03-16 | ||
PCT/DE2001/000689 WO2001069079A2 (de) | 2000-03-16 | 2001-02-23 | Vorrichtung und verfahren zur regelung des energieangebots für die zündung in einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1266136A2 true EP1266136A2 (de) | 2002-12-18 |
EP1266136B1 EP1266136B1 (de) | 2006-05-10 |
Family
ID=7635044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01919142A Expired - Lifetime EP1266136B1 (de) | 2000-03-16 | 2001-02-23 | Vorrichtung und verfahren zur regelung des energieangebots für die zündung in einer brennkraftmaschine |
Country Status (8)
Country | Link |
---|---|
US (1) | US6763815B2 (de) |
EP (1) | EP1266136B1 (de) |
JP (1) | JP2003527534A (de) |
KR (1) | KR100769756B1 (de) |
CN (1) | CN1246581C (de) |
DE (2) | DE10012956A1 (de) |
RU (1) | RU2267646C2 (de) |
WO (1) | WO2001069079A2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6651637B1 (en) * | 2002-10-29 | 2003-11-25 | Transpo Electronics, Inc. | Vehicle ignition system using ignition module with reduced heat generation |
DE10306698B4 (de) * | 2003-02-18 | 2005-10-20 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Überwachung einer Brennkraftmaschine |
JP4020046B2 (ja) * | 2003-08-29 | 2007-12-12 | 株式会社デンソー | 内燃機関の制御装置 |
DE102004049345A1 (de) * | 2004-10-08 | 2006-04-13 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung eines Antriebseinheit |
DE102007051249A1 (de) * | 2007-10-26 | 2009-04-30 | Robert Bosch Gmbh | Vorrichtung zur Regelung eines Mehrfachfunkenbetriebs einer Verbrennungskraftmaschine und zugehöriges Verfahren |
JP5201321B2 (ja) * | 2007-12-04 | 2013-06-05 | 富士電機株式会社 | イグナイタシステム |
EP2238340A4 (de) * | 2008-02-07 | 2018-03-14 | SEM Aktiebolag | System zur stromunterstützung in einem cdi-system |
US20100006066A1 (en) * | 2008-07-14 | 2010-01-14 | Nicholas Danne | Variable primary current for ionization |
DE102010061799B4 (de) * | 2010-11-23 | 2014-11-27 | Continental Automotive Gmbh | Verfahren zum Betreiben einer Zündvorrichtung für eine Verbrennungskraftmaschine und Zündvorrichtung für eine Verbrennungskraftmaschine zur Durchführung des Verfahrens |
PT2676270T (pt) | 2011-02-14 | 2017-05-02 | Fraunhofer Ges Forschung | Codificação de uma parte de um sinal de áudio utilizando uma deteção de transiente e um resultado de qualidade |
DE102012200633A1 (de) * | 2012-01-17 | 2013-07-18 | Man Diesel & Turbo Se | Kapazitives Zündsystem |
DE102012214518B3 (de) * | 2012-08-15 | 2014-02-06 | Ford Global Technologies, Llc | Verfahren zur Steuerung einer Zündanlage einer Brennkraftmaschine sowie Zündanlage |
CN105443295A (zh) * | 2014-09-26 | 2016-03-30 | 大陆汽车电子(长春)有限公司 | 一种用于确定提供给点火装置的能量值的方法和设备 |
US20190040837A1 (en) * | 2016-02-23 | 2019-02-07 | GM Global Technology Operations LLC | Systems and methods of controlling pre-primary ignition of an internal combustion engine |
US20180135590A1 (en) * | 2016-11-15 | 2018-05-17 | Woodward, Inc. | Controlling Engine Ignition |
US10138862B2 (en) * | 2016-11-22 | 2018-11-27 | Ford Global Technologies, Llc | Method and system for ignition coil control |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3882840A (en) | 1972-04-06 | 1975-05-13 | Fairchild Camera Instr Co | Automotive ignition control |
IT1227586B (it) | 1988-12-13 | 1991-04-22 | Sgs Thomson Microelectronics | Circuito di diagnostica per unita' di controllo della corrente e di protezione da eccessiva dissipazione termica per dispositivo di potenza a semiconduttore |
US5283527A (en) * | 1991-06-28 | 1994-02-01 | Ford Motor Company | Methods and apparatus for detecting short circuited secondary coil winding via monitoring primary coil winding |
DE59304461D1 (de) * | 1992-07-16 | 1996-12-19 | Bosch Gmbh Robert | Überlastungsschutzschaltung |
JP3216972B2 (ja) * | 1995-08-04 | 2001-10-09 | 株式会社日立製作所 | 内燃機関の点火装置 |
DE19722300A1 (de) * | 1997-05-28 | 1998-12-03 | Bosch Gmbh Robert | Übertemperatur-Schutzschaltung |
GB2325988A (en) * | 1997-06-02 | 1998-12-09 | Ford Motor Co | Ignition coil monitoring arrangement |
DE19906391A1 (de) * | 1999-02-16 | 2000-08-17 | Bosch Gmbh Robert | Zündsteuervorrichtung und -verfahren |
DE19906390A1 (de) * | 1999-02-16 | 2000-08-17 | Bosch Gmbh Robert | Zündsteuervorrichtung und -verfahren |
DE19956381A1 (de) | 1999-10-06 | 2001-04-12 | Bosch Gmbh Robert | Vorrichtung und Verfahren zur Zündung einer Brennkraftmaschine |
DE10041443A1 (de) * | 2000-08-23 | 2002-03-07 | Bosch Gmbh Robert | Verfahren zum Betreiben einer Brennkraftmaschine und entsprechende Vorrichtung |
-
2000
- 2000-03-16 DE DE10012956A patent/DE10012956A1/de not_active Withdrawn
-
2001
- 2001-02-23 KR KR1020027012100A patent/KR100769756B1/ko not_active IP Right Cessation
- 2001-02-23 EP EP01919142A patent/EP1266136B1/de not_active Expired - Lifetime
- 2001-02-23 US US10/239,044 patent/US6763815B2/en not_active Expired - Fee Related
- 2001-02-23 DE DE50109759T patent/DE50109759D1/de not_active Expired - Lifetime
- 2001-02-23 CN CNB018065376A patent/CN1246581C/zh not_active Expired - Fee Related
- 2001-02-23 WO PCT/DE2001/000689 patent/WO2001069079A2/de active IP Right Grant
- 2001-02-23 JP JP2001567932A patent/JP2003527534A/ja active Pending
- 2001-02-23 RU RU2002127777/06A patent/RU2267646C2/ru not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0169079A2 * |
Also Published As
Publication number | Publication date |
---|---|
KR20030007465A (ko) | 2003-01-23 |
DE50109759D1 (de) | 2006-06-14 |
WO2001069079A2 (de) | 2001-09-20 |
WO2001069079A3 (de) | 2002-03-07 |
CN1246581C (zh) | 2006-03-22 |
RU2267646C2 (ru) | 2006-01-10 |
JP2003527534A (ja) | 2003-09-16 |
US20030089353A1 (en) | 2003-05-15 |
KR100769756B1 (ko) | 2007-10-23 |
CN1418289A (zh) | 2003-05-14 |
US6763815B2 (en) | 2004-07-20 |
DE10012956A1 (de) | 2001-09-20 |
EP1266136B1 (de) | 2006-05-10 |
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