EP1523617A1 - Treiberstufe für ein solenoidventil - Google Patents
Treiberstufe für ein solenoidventilInfo
- Publication number
- EP1523617A1 EP1523617A1 EP03738093A EP03738093A EP1523617A1 EP 1523617 A1 EP1523617 A1 EP 1523617A1 EP 03738093 A EP03738093 A EP 03738093A EP 03738093 A EP03738093 A EP 03738093A EP 1523617 A1 EP1523617 A1 EP 1523617A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- supply voltage
- connection
- switching device
- diode
- voltage connection
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims abstract 2
- 230000005669 field effect Effects 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000000593 degrading effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
- H01H47/325—Energising current supplied by semiconductor device by switching regulator
-
- 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
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- 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
- F01L2800/00—Methods of operation using a variable valve timing mechanism
Definitions
- the invention relates to a driver stage for a solenoid valve of an internal combustion engine according to claim 1.
- Such a solenoid valve is used to control a valve lift of an intake or exhaust valve by a hydraulic system.
- the control takes place in dependence on a crankshaft angle, a cycle being generally achieved by two crankshaft revolutions (720 ° crankshaft angle).
- the driver stages must switch the required currents and must therefore be manufactured with a correspondingly large dimension. Larger dimensions, however, in turn complicate higher integration and lead to increased manufacturing costs.
- the invention has for its object to provide a driver stage for a solenoid valve that enables safe operation and yet requires a relatively low amount of energy.
- the invention is based on the idea of adapting the dimensioning of the channel widths to the switching conditions.
- one of the switching devices can have a significantly lower power loss than the other switching device and can therefore be made smaller.
- a source-drain channel can be dimensioned shorter.
- FIG. 1 shows a block diagram of a driver stage according to the invention
- FIG. 3 shows more detailed representations of current, voltage and power profiles of the channel current of the switching device M1 from FIG. 1;
- the driver stage 1 shown in FIG. 1 has a first connection terminal A1 for connection to a positive supply voltage terminal VS and a second connection terminal A2 for connection to a negative supply voltage terminal GND of a vehicle.
- Switching devices are connected to the connection terminals A1, A2.
- the two switching devices can in particular as solid-state circuit breakers M1 and M2, for. B. as MOSFETs, JFETs, HEXFETs with gate connections G1 and G2.
- the gates G1, G2 serve as control inputs of the driver stage.
- self-locking MOSFETs M1, M2 of the enhancement type are assumed, which only conduct when a logic one is present at the respective gate GI, G2.
- the inductance connections of a solenoid valve are connected between the other connections of the switches M1, M2.
- a first and a second diode D1, D2 are connected between the second (source) connections of the MOSFETs M1, M2 and the supply voltage connections, and are therefore in each case parallel to the series circuit comprising the inductance and the first and second MOSFETs. 2
- a charging phase AB, an acceleration phase BC, a discharge phase CD, a holding phase DE and a final phase EF are provided in succession in a cycle, wherein
- the two switching devices M1, M2 conduct in a first holding phase period and in a subsequent second holding phase period blocks the first switching device M1 and conducts the second switching device M2, and
- the two switching devices M1, M2 are blocked and a current i induced by the magnetic field in the inductor L1 is reduced from the negative supply voltage connection via the second diode, the inductor and the first diode D1 to the positive one
- a single cycle of the switching device M1 has an instantaneous power consumption with a pulse-like shape according to FIG. 3.
- phenomena of charging the gate capacities and so on are neglected without loss of generality.
- the model of FIG. 3 designated with Approx is used as the switching model.
- the result is an average power consumption Ps of
- T Ton + Toff and Toff and Ton are the times when M1 is on or off
- VDS is the voltage across the drain-source channel
- IDS is the current flowing through the power device
- Ps is the mean power during a period T. If the proportions are calculated separately:
- the power used for the switching process can be calculated from this by superposition (superposition):
- T tone is set, i.e. the effective cycle is 100%.
- the power device is to be dimensioned as follows:
- the power consumed at M2 is calculated as follows: M2 is not switched at the same frequency as M1 (see FIG. 2). M2 is closed at the start of the actuation (see FIG. 4 and FIG. 5). M2 is opened and closed at the beginning and end of the first discharge phase (see FIG. 6 and FIG. 7) and finally it is opened when the current through the solenoid is closed (see FIG. 8). There are therefore four switching processes in each cycle of the internal combustion engine, ie at 720 ° crankshaft angle. The average power consumption or power loss due to the switching operations on M2 is calculated as follows
- M2 has a power loss that is 71% lower than that of M1.
- the switching device M2 is therefore formed with a shorter channel and accordingly a lower Roson and thus also a lower VDSODS is achieved than with M1.
- Equation 1 means for the "thermal resistance" R ⁇ (temperature difference to the ambient temperature per 10 power loss):
- T connection is the temperature of the power device connection
- Ta is selected for the adaptation factor with the same ambient temperature
- the determined relationship should be within a variation range of e.g. B. 0.7 to 1, 3, in particular 0.9 to 1, 1 - times the determined value.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electronic Switches (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10232741 | 2002-07-19 | ||
| DE10232741A DE10232741A1 (de) | 2002-07-19 | 2002-07-19 | Treiberstufe für ein Solenoidventil |
| PCT/EP2003/006807 WO2004009985A1 (de) | 2002-07-19 | 2003-06-27 | Treiberstufe für ein solenoidventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1523617A1 true EP1523617A1 (de) | 2005-04-20 |
| EP1523617B1 EP1523617B1 (de) | 2009-08-19 |
Family
ID=30010188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03738093A Expired - Lifetime EP1523617B1 (de) | 2002-07-19 | 2003-06-27 | Treiberstufe für ein solenoidventil |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1523617B1 (de) |
| AU (1) | AU2003245993A1 (de) |
| DE (2) | DE10232741A1 (de) |
| WO (1) | WO2004009985A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3819593A1 (de) * | 1988-06-09 | 1989-12-14 | Vdo Schindling | Schaltungsanordnung fuer ein elektrisches stellglied |
| US5159515A (en) * | 1990-04-05 | 1992-10-27 | International Rectifier Corporation | Protection circuit for power FETs in a half-bridge circuit |
| DE4413240A1 (de) * | 1994-04-16 | 1995-10-19 | Bosch Gmbh Robert | Vorrichtung und ein Verfahren zur Ansteuerung eines elektromagnetischen Verbrauchers |
| DE19747033A1 (de) * | 1997-10-24 | 1999-04-29 | Daimler Chrysler Ag | Elektronische Schalteinrichtung für Magneten |
| FR2772972B1 (fr) * | 1997-12-19 | 2000-01-28 | Renault | Dispositif de commande d'un electroaimant |
| US6249418B1 (en) * | 1999-01-27 | 2001-06-19 | Gary Bergstrom | System for control of an electromagnetic actuator |
| DE10018175A1 (de) * | 2000-04-12 | 2001-10-25 | Bayerische Motoren Werke Ag | Schaltungsanordnung zum Betrieb eines hochdynamischen elektromagnetischen Hubanker-Aktors |
| DE10020896A1 (de) * | 2000-04-29 | 2001-10-31 | Lsp Innovative Automotive Sys | Verfahren zur Bestimmung der Position eines Ankers/ eines Ventils |
| JP2001349462A (ja) * | 2000-06-08 | 2001-12-21 | Honda Motor Co Ltd | バルブ駆動装置 |
-
2002
- 2002-07-19 DE DE10232741A patent/DE10232741A1/de not_active Ceased
-
2003
- 2003-06-27 DE DE50311834T patent/DE50311834D1/de not_active Expired - Lifetime
- 2003-06-27 WO PCT/EP2003/006807 patent/WO2004009985A1/de not_active Ceased
- 2003-06-27 AU AU2003245993A patent/AU2003245993A1/en not_active Abandoned
- 2003-06-27 EP EP03738093A patent/EP1523617B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004009985A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50311834D1 (de) | 2009-10-01 |
| EP1523617B1 (de) | 2009-08-19 |
| DE10232741A1 (de) | 2004-02-05 |
| AU2003245993A1 (en) | 2004-02-09 |
| WO2004009985A1 (de) | 2004-01-29 |
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