EP0704097B1 - Procede et dispositif de commande de consommateurs electromagnetiques - Google Patents

Procede et dispositif de commande de consommateurs electromagnetiques Download PDF

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Publication number
EP0704097B1
EP0704097B1 EP95913053A EP95913053A EP0704097B1 EP 0704097 B1 EP0704097 B1 EP 0704097B1 EP 95913053 A EP95913053 A EP 95913053A EP 95913053 A EP95913053 A EP 95913053A EP 0704097 B1 EP0704097 B1 EP 0704097B1
Authority
EP
European Patent Office
Prior art keywords
switching means
energy
phase
consumer
capacitor
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.)
Expired - Lifetime
Application number
EP95913053A
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German (de)
English (en)
Other versions
EP0704097A1 (fr
Inventor
Torsten Henke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0704097A1 publication Critical patent/EP0704097A1/fr
Application granted granted Critical
Publication of EP0704097B1 publication Critical patent/EP0704097B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1816—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator
    • 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
    • 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
    • F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
    • F02D2041/2006—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost capacitor
    • 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
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
    • F02D2041/2027—Control of the current by pulse width modulation or duty cycle control
    • 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
    • F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
    • F02D2041/2072—Bridge circuits, i.e. the load being placed in the diagonal of a bridge to be controlled in both directions

Definitions

  • the invention relates to an apparatus and a method to control an electromagnetic consumer according to the preambles of the independent claims.
  • a device and a method for controlling a electromagnetic consumer is from US 3 896 346 known.
  • This document shows one method and one Device for controlling an electromagnetic Consumer by means of a half bridge. It is provided that two consumers switched on alternately and turned off. When you turn off the energy released in the consumer at the same time reloaded other consumers to be switched on. Since the The drop in power and the increase in power are not completely congruent are a small part of the energy in a capacitor cached. This capacitor is parallel to the Half bridge or connected in parallel to the voltage source.
  • EP 088 445 shows a method and an apparatus for Actuation of a consumer.
  • Here is one H-bridge circuit used. This is done with a view to Task that a current flow in different Directions is desired by the consumer. The Problem that the consumer as quickly as possible is not to be activated.
  • a device for controlling an electromagnetic Consumer is known from DE-OS 37 02 680.
  • One in line to the consumer arranged electronic switching element is by a Extinguishing circuit can be bridged.
  • This extinguishing circuit contains one Energy storage in the form of a capacitor for receiving the energy stored in the consumer.
  • a disadvantage of this Circuit arrangement is that it is component-intensive and a voluminous capacitor for intermediate energy storage requires that constantly at least on supply voltage is loaded.
  • Next to the capacitor are at least two Series diodes required.
  • the invention has for its object in a device to control an electromagnetic consumer to provide a facility that is as simple as possible, with which the start-up process is accelerated and the total energy consumption is minimized.
  • circuit arrangement according to the invention with the features of the independent claims has the advantage that results in lossless deletion. Furthermore, by the reuse of those saved during the deletion process Energy when turned on, the current rise will be increased. This in turn leads to the solenoid valve switching time decreased. These advantages are low Component effort reached. Further advantageous configurations are marked in the subclaims.
  • the device according to the invention is based on the Embodiments illustrated in the drawing. 1 shows a circuit arrangement of the invention Device, Figure 2 different plotted over time Signals and Figures 3 and 4 improved circuitry.
  • the device according to the invention is preferred for internal combustion engines, especially with self-igniting internal combustion engines, used.
  • This electromagnetic valves are referred to below as consumers designated.
  • the invention is not for this application limited, it can be used anywhere where fast switching electromagnetic valves are required become.
  • the switching time is the period between the activation of the Solenoid valve and the actual opening or closing of the solenoid valve.
  • the Switching time is as short as possible.
  • a first connection of the consumer 100 stands with a node 105 and the second connection with a connection point 110 in connection.
  • the node 105 is via a first switching means 115 connected to the ground terminal 120.
  • the second Link point 110 is with the cathode of a first Diode 125 in contact.
  • the anode of the first diode 125 is located to ground potential.
  • connection point 105 is with the anode a second diode 130 in contact.
  • the link point 110 is connected to the cathode via a second switching means 135 the second diode 130 in contact.
  • connection point between the cathode of the second diode 130 and the switching means 135 is in contact with the cathode of a third diode 140 and the one connection of a capacitor 145.
  • the second connection of the capacitor 145 and the anode of the third diode 140 are connected to a voltage source which supplies them with supply voltage U bat .
  • the arrangement of the consumer 100, the two switching means 115 and 135 and the first and second diodes 125 and 130 is commonly referred to as a half bridge.
  • the cathode is another diode 131 connected to the cathode of the diode 130.
  • the anode of the further diode 131 is with a switching means 116 and the a connection of the further consumer 101 in contact.
  • the second connection of the consumer 101 is with the Cathode of diode 125 or with node 110 contacted.
  • a first phase the usually only when switched on for the first time, when the battery is discharged Capacitor 145 occurs are the first switching means 115 and the second switching means 135 closed and give the flow of electricity through the consumer freely.
  • the current flows over the path consisting of the third, Diode 140, second switching means 135, consumer 100 and the first switching means 115.
  • a second phase also known as the deletion phase the first switching means 115 and the second switching means 135 in its open state.
  • a current flows over the path consisting of the first Diode 125, consumer 100, second diode 130 and the capacitor 145.
  • that in the consumer 100 stored energy in capacitor 145 as well reloaded the voltage source.
  • the aim of the deletion phase is it, the current flowing through the consumer in as much as possible decrease to zero in a short time.
  • a third phase the first switching means 115 and the second switching means 135 is closed and the current flows through the path consisting of capacitor 145, the second Switching means 135, the consumer 100 and the first Switching means 115.
  • this phase that in the capacitor 145 stored energy returned to the consumer as well as energy from the voltage source into the consumer transfer.
  • This phase is also known as the tightening phase. Their goal is to achieve a high level of electricity To keep the closing time of the solenoid valve as short as possible.
  • a fourth phase the current flows through the path from the third diode 140, the second switching means 135, the consumer 100 and the first switching means 115.
  • This phase is the energy loss from the voltage source provided.
  • the third diode 140 prevents capacitor 145 charges positively.
  • the so-called holding current phase remains the second switching means 135 in its closed State and the switching means 115 is operated clocked, this means it is opened and closed alternately. This is usually done in such a way that A certain current value.
  • this Clocking phase alternating between energizing and freewheeling capacitor 145 remains in its discharged state Status.
  • the operation of this arrangement is described below of Figure 2 described.
  • the first line is a control signal for the second switching means 135 is applied, that the control of the solenoid valve and thus the beginning and defines the end of fuel metering.
  • the second line is the one flowing through the solenoid valve Current, and on the third line, at the cathode of the Diode 140 against voltage applied to ground. This voltage corresponds when the first switch is closed 115 and second switch 135, which abut the solenoid valve Tension.
  • the third phase begins at the time T1. This means that the current I applied in the third line, which flows through the solenoid valve, increases sinusoidally. At the same time, the voltage U K applied to the cathode of the third diode 140, which is shown in the fourth line, drops cosine. This third phase ends at time T2.
  • the voltage U k applied to the cathode of the third diode 140 has dropped to a value U bat . This means that the capacitor 145 is no longer discharged, since the voltage U c applied to the capacitor assumes the value zero. Furthermore, the third diode 140 prevents positive charging of the capacitor 145.
  • the device is in the fourth phase, in which the supply voltage provides the required energy.
  • the voltage applied to the third diode 140 or to the capacitor 140 remains at zero.
  • the current increases linearly over time until it reaches its specified starting current setpoint i 1 .
  • the current is adjusted to the pull-in current setpoint i 1 as in the fifth phase.
  • the device reaches the fifth phase, the so-called clocking phase.
  • the current flowing through the consumer is regulated to a predefinable holding current setpoint i 2 .
  • a two-point controller is preferably used here, the the current flowing through the consumer with a predefinable Compares value. If the current exceeds an upper one Value, only the switching means 115 opens the current has a lower value, the switching means opens 115. This leads to the current in this fifth phase oscillates between the upper and lower values. The second switching means remains in this fifth phase 135 closed, so there is no energy transfer between Capacitor 140 and consumer 100 instead.
  • the timing phase is followed by the second phase from time T4.
  • the control signals plotted in the first and second lines of FIG. 2 end. This means that both switching means are opened. As a result, the current decreases sinusoidally.
  • the voltage U k on the capacitor 145 or on the cathode of the third diode 140 rises to a value U D above the supply voltage U bat . This means the capacitor is recharged.
  • the capacitor 145 and the consumer form 100 a resonant circuit in which the energy in the second phase from the consumer into the voltage source and the Capacitor 145 and in the third phase from the voltage source and the capacitor 145 reloaded into the consumer becomes. None occurs during the clocking in the fifth phase Reloading between the consumer and the capacitor.
  • capacitor 145 is self-discharging very low. The case can only be started occur that the capacitor is partially discharged. this leads to to the fact that when the consumer is energized, this first Current build-up is slower. To fix this disadvantage the further embodiment shown in FIG Invention proposed.
  • the same as that shown in Figure 1 is another Switching means 200 between the supply voltage and the Capacitor 145 arranged.
  • the connection point between this switching means 200 is an additional switching means 220 connected to ground.
  • the additional Switching means 220 closed and the other switching means 200 also open. This will open the capacitor Supply voltage charged so that for the first current build-up additional energy for acceleration after a long standstill of the current structure is available.
  • FIG. 3b A further embodiment is shown in FIG. 3b.
  • This Circuit has the advantage that the capacitor through the resonant circuit formed from inductor 210 and capacitor 145 charged to a voltage double that Supply voltage corresponds.
  • FIG 4 shows a further embodiment of the invention.
  • the components already described in Figure 1 the the same as that shown in Figure 1 is another Switching means 200 between the supply voltage and the Capacitor 145 arranged.
  • the connection point between this switching means 200 and the capacitor 145 is included the connection point between diode 130, consumer 100 and Switching means 115 in contact.
  • connection point 110 is via a switching means 400 connected to ground.
  • the switching means 135 and 115 open, the switching means 200 and 400 closed. This will cause the capacitor to reach a voltage that the double supply voltage corresponds to charged.
  • the consumer 100 takes over Tasks of the throttle 210.
  • the switching means are preferably in the form of transistors, in particular realized as field effect transistors.
  • the switching means are from a control unit, not shown acted upon with control signals.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Un procédé et un dispositif servent à commander un consommateur électromagnétique (100), notamment une vanne magnétique de commande de la quantité de carburant à injecter. Un élément accumulateur d'énergie (145) est monté entre un demi-pont et une source de tension (Ubat).

Claims (10)

  1. Dispositif de commande d'un consommateur électromagnétique (100) notamment d'une électrovanne pour commander la quantité de carburant à injecter à l'aide d'un demi pont,
    caractérisé en ce qu'
    entre le demi pont et une source de tension (Ubat), on a le montage en série d'un élément stockant l'énergie (145).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'élément stockant l'énergie (145) est un condensateur.
  3. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    une diode (140) est branchée en parallèle sur l'élément stockant l'énergie (145).
  4. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    entre l'élément stockant l'énergie (145) et la source de tension, on a un autre moyen de commutation (200).
  5. Procédé de commande d'un consommateur électromagnétique (100) notamment d'une électrovanne pour commander la quantité de carburant à injecter à l'aide d'un demi pont,
    caractérisé en ce que
    les moyens de commutation du demi pont sont commandés pour qu'un élément stockant l'énergie (145) monté en série entre le demi pont et une source de tension (Ubat) et/ou une source de tension échange de l'énergie avec le consommateur (100).
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    dans une seconde phase (phase d'extinction) de l'énergie est transférée du consommateur (100) dans l'élément stockant l'énergie (145) et/ou dans la source de tension.
  7. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    dans la seconde phase, le premier moyen de commutation (115) et le second moyen de commutation (135) sont commandés pour avoir un passage de courant selon un chemin formé d'une première diode (125), du consommateur (100), d'une seconde diode (130) et de l'élément stockant l'énergie (145) et/ou la source de tension.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    dans une troisième phase, l'énergie est transférée de l'élément stockant l'énergie (145) et/ou de la source de tension vers le consommateur (100).
  9. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    dans une troisième phase, le premier moyen de commutation (115) et le second moyen de commutation (130) sont commandés pour que s'établisse un passage de courant dans un premier chemin formé de l'élément stockant l'énergie (145), le second moyen de commutation (135), le consommateur (100) et le premier moyen de commutation (115) par l'intermédiaire d'une diode (140).
  10. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les moyens de commutation (200, 220) sont commandés pour que l'élément stockant l'énergie (145) reçoive au cours d'une phase, l'énergie de la source de tension.
EP95913053A 1994-04-16 1995-03-24 Procede et dispositif de commande de consommateurs electromagnetiques Expired - Lifetime EP0704097B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4413240A DE4413240A1 (de) 1994-04-16 1994-04-16 Vorrichtung und ein Verfahren zur Ansteuerung eines elektromagnetischen Verbrauchers
DE4413240 1994-04-16
PCT/DE1995/000408 WO1995028721A1 (fr) 1994-04-16 1995-03-24 Procede et dispositif de commande de consommateurs electromagnetiques

Publications (2)

Publication Number Publication Date
EP0704097A1 EP0704097A1 (fr) 1996-04-03
EP0704097B1 true EP0704097B1 (fr) 2000-02-16

Family

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Application Number Title Priority Date Filing Date
EP95913053A Expired - Lifetime EP0704097B1 (fr) 1994-04-16 1995-03-24 Procede et dispositif de commande de consommateurs electromagnetiques

Country Status (5)

Country Link
US (1) US5729422A (fr)
EP (1) EP0704097B1 (fr)
JP (1) JPH08512436A (fr)
DE (2) DE4413240A1 (fr)
WO (1) WO1995028721A1 (fr)

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JPH01167008U (fr) * 1988-05-13 1989-11-22
DE3939547C2 (de) * 1989-11-30 1999-07-01 Bosch Gmbh Robert Vorrichtung zur Kraftstoffeinspritzung in Brennkraftmaschine
IT1251259B (it) * 1991-12-23 1995-05-05 Elasis Sistema Ricerca Fiat Circuito di comando di carichi prevalentemente induttivi, in particolare elettroiniettori.

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Publication number Publication date
EP0704097A1 (fr) 1996-04-03
WO1995028721A1 (fr) 1995-10-26
DE59507809D1 (de) 2000-03-23
JPH08512436A (ja) 1996-12-24
DE4413240A1 (de) 1995-10-19
US5729422A (en) 1998-03-17

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