WO2016119918A1 - Verfahren zum betreiben einer kolbenpumpe, ansteuereinrichtung einer kolbenpumpe und kolbenpumpe - Google Patents
Verfahren zum betreiben einer kolbenpumpe, ansteuereinrichtung einer kolbenpumpe und kolbenpumpe Download PDFInfo
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- WO2016119918A1 WO2016119918A1 PCT/EP2015/070063 EP2015070063W WO2016119918A1 WO 2016119918 A1 WO2016119918 A1 WO 2016119918A1 EP 2015070063 W EP2015070063 W EP 2015070063W WO 2016119918 A1 WO2016119918 A1 WO 2016119918A1
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- WIPO (PCT)
- Prior art keywords
- coil
- piston
- current
- extinguishing
- semiconductor switch
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 76
- 239000004065 semiconductor Substances 0.000 claims description 127
- 230000008569 process Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000012217 deletion Methods 0.000 claims description 4
- 230000037430 deletion Effects 0.000 claims description 4
- 238000010791 quenching Methods 0.000 abstract description 8
- 230000000171 quenching effect Effects 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 description 15
- 230000005291 magnetic effect Effects 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000002441 reversible effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
- F04B17/044—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow using solenoids directly actuating the piston
-
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
- H01L29/866—Zener diodes
-
- 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
- F02D2041/2034—Control of the current gradient
-
- 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
- F02D2041/2041—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit for controlling the current in the free-wheeling phase
-
- 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
- F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
Definitions
- the present invention relates to a method for operating a
- Piston pump which is driven by means of a coil of an electromagnet, wherein by means of the electromagnet, a piston of the piston pump against a
- Restoring force is movable.
- the coil is subjected to a voltage, so that it drives a current through the coil.
- the coil causes magnetic forces and accelerates the piston.
- the invention relates to a drive device for the piston pump and a
- Piston pump with a drive device.
- piston pumps which are drivable by means of the coil of an electromagnet.
- electromagnet can be, for example, as
- Fuel pump can be used.
- a pump is shown in a design as a lifting armature pump in FIG.
- the piston pump comprises a spool 1, a piston 2 with a piston head 4, a cylinder 3, a coil spring 5 with an abutment 6 and a valve unit 7.
- a current flows through the coil 1, a magnetic flux is caused by the same
- the control of the pump is usually via an electrical
- Freewheeling circuit over which the current continues to flow in the coil when decaying This is referred to as "erase.”
- Fast erasure can be accomplished by passing the current across a device that quickly converts the energy in the coil into heat
- the circuit used has a semiconductor switch, by means of which in a first
- FIG. 3 shows the course of the voltage U across the coil over time t in seconds. After a switch-on takes place after the end of a voltage dip, which runs through the withdrawal of energy from the coil with time against the voltage zero.
- the current I through the coil over the same period is shown, which is also shown in Figure 3.
- the current I increases during the duty cycle of the voltage U and falls sharply after reaching the end, so that it is zero after a short time.
- the disadvantage of this solution is that the current is abruptly deleted and the piston thus remains only a short time in a strongly deflected position. This period of time may be due to the
- Inertia of the hydraulic system may not be enough to do that Optimum filling of pump volume.
- Inertia of the hydraulic system may not be enough to do that Optimum filling of pump volume.
- at a strong energization and in an operating condition with relatively small hydraulic resistance of the piston strike a stop, resulting in a considerable
- a second extinguishing method significantly extends the possibilities of turning off the power, but is not as expensive as one
- the piston can be accelerated first, whereby it reaches a stop.
- a first erasing procedure e.g. causes the piston to be held against the stop.
- the fluid to be pumped has sufficient time to fill the pumping volume.
- the delivery rate of the pump is improved, wherein a delivery rate, the ratio of an actually present in the cylinder fluid volume to the theoretically maximum possible filling is understood.
- Extinguishing method can be used, which quickly clears the current in the coil. Then the piston moves by the restoring force in a position from which it is accelerated again in the direction of the stop.
- Extinguishing method is used.
- a weak erase method an erase method is referred to, in which the current through the coil decreases only slowly. Accordingly, the magnetic force generated by the coil also decreases only slowly.
- a low resistance in particular at least approximately a short circuit, can be present in the freewheeling circuit.
- the current through the coil is reduced considerably faster than in the case of a weak extinguishing method.
- an impedance can be provided in the freewheeling circuit, at which a high electrical power is converted into heat at the present voltage and current.
- the impedance may also be provided by a semiconductor junction. In many reciprocating piston pumps, the magnetic force is along the path of the
- Piston progressive whereby it is the largest at the stop. Therefore, a small current passes through the coil at the stop to keep the piston at the stop. Therefore, if only little energy is extracted from the coil by the weak extinguishing method, this is sufficient to hold the piston against the stop.
- the weak extinguishing method it is conceivable that the weak
- Extinguishing method is used while the piston is still in motion on the stop.
- the piston reaches the stopper by his
- the time of application of the weak and the strong quenching process can be set so that the best possible pumping results.
- the behavior of the pump can be further optimized by determining, by means of a measuring method, a point in time at which the piston starts to move and in response to which the switch-on duration is terminated. The then stored in the coil
- Energy content is preferably sufficient that the resulting
- Magnetic action moves the piston to the stop.
- the magnetic energy generated by the coil is well utilized.
- the termination of the duty cycle when detecting a movement of the piston is advantageous because a movement of the piston can be detected quite well in comparison to its standstill, in particular on the onset of counter tension in the coil, resulting from the piston movement.
- the piston is prior to its movement to a rest stop, which is different from the abovementioned stop.
- the coil short-circuited via a semiconductor switch.
- the current flowing in the coil can thus run across the freewheeling circuit, resulting in a relatively low energy loss from the coil.
- the resistance of the opened semiconductor switch as well as the internal resistance of the coil as well as possibly significant line resistances convert part of the energy of the coil into heat. Overall, there is a slow drop in the
- Amperage through the coil preferably to a similar extent as the current increase during the duty cycle.
- Embodiment it is conceivable to feed power from the coil into a power supply device in the strong erase process, which is in particular a power supply device, was taken from the power for the coil during the duty cycle. Then it is a return feed.
- the coil may also be connected in an H-bridge, wherein the coil is arranged between the voltage divider points of the two branches.
- the endpoints of the branches are connected.
- a supply voltage is applied, which preferably originates from a power supply device.
- DC voltage is preferably applied.
- the two branches in each case at least one semiconductor switch is connected, wherein one of the semiconductor switches in one
- a diode is in each case arranged in the remaining two sub-branches from the voltage divider points to the respective other end points of the branches, which is polarized in the reverse direction with respect to the supply voltage.
- Duty cycle the two semiconductor switches are switched conductive, so that can tile over them and the coil current.
- one of the semiconductor switches is closed while the other is opened. Then, a freewheeling circuit can form over the opened semiconductor switch and one of the diodes.
- Power supply device drives.
- each of the diodes in the aforementioned partial branches is replaced by a semiconductor switch. Then, the direction of the current through the coil can be determined by switching the two semiconductor switches, which are already in the previous one, in one direction
- the additional semiconductor switches can be switched to be conductive, while the semiconductor switches block the basic variant.
- the function of the diodes for the freewheeling operation can be simulated.
- Semiconductor switches have the advantage that they can have a lower internal resistance in regenerative operation than the diodes.
- each of the semiconductor switches is provided with a freewheeling diode.
- the free-wheeling diodes are connected in the reverse direction with respect to the supply voltage and connected in each case to the source and drain of their semiconductor switch.
- This constellation can be by appropriate switching of the semiconductor switch cause either the internal resistance of the semiconductor switch or the resistance of the semiconductor junction of the diode or the reverse resistance of the diode are effective in a freewheeling circuit.
- a weak erase process can thus take place via a freewheeling circuit with two semiconductor switches connected in a conductive manner, which are both connected together at the same end of the H-bridge. In particular, the other two semiconductor switches are switched off.
- Freewheeling circuit in the forward direction which diode this is depends on the current direction through the coil and on whether the freewheeling circuit in the sub-branches at the supply voltage potential or
- a freewheeling circuit for the strong quenching process can be switched by locking all semiconductor switches. Then, a freewheeling circuit forms over two of the freewheeling diodes and the
- Semiconductor switches which are parallel to the conductive diodes, are switched conductive.
- an H-bridge circuit for powering the coil is designed as an integrated circuit on a chip.
- the time of activation becomes a weak one
- Duty cycle and / or the holding time set in dependence on mechanical and / or hydraulic properties of the piston pump.
- An operating point is defined as a function of the delivery rate and the pumping frequency.
- the temperature of the coil is determined and carried out by means of the temperature information, a correction of the calculated time. This may be due to a deviation of the resistance Temperature drift are calculated and the temperature-corrected resistance value can be used in the above formula, so that a temperature-corrected
- Duty cycle t is calculated. The calculation of the change of a
- the piston pump is designed as a fuel pump for an internal combustion engine.
- the pump frequency of the piston pump can be adapted to a required amount of fuel.
- the pump frequency is adjusted so that the piston pump delivers a little more fuel than the internal combustion engine needed. Compared to a design with permanent full load of the pump results in a significant energy savings.
- the fuel delivery rate can also be effected by adjusting the pump stroke.
- the duty cycle of the coil can be adapted to a required amount of fuel.
- the pump stroke is preferably adjusted so that the fuel pump delivers a little more fuel than the internal combustion engine requires. The calculation of the duty cycle can be performed for example in a control unit of the internal combustion engine. The required minimum flow rate to supply the
- the internal combustion engine may be calculated from engine speed, injector injection time, and steady state flow rate at a given or modeled injection pressure.
- the following formula can be used for this:
- Q a Zy i / 2 ⁇ n mot ⁇ t, ⁇ Qmj.stat
- Q is a fuel delivery volume
- a Zy i the number of cylinders of the internal combustion engine, n mot , the speed of the engine, t, the effective injection time and O bstat a steady fuel flow through an open injector.
- the frequency of the piston pump is preferably not reduced to near zero for very small volume flows required, but limited to a minimum frequency at which the pump is still stable.
- the minimum frequency can be, for example, 30 Hz.
- f pU mp, opt means an optimum pump frequency, f pU mp, max the maximum possible pump frequency, z. B. 100 Hertz, Q closely in the required for the internal combustion engine fuel volume flow and Q pU mp, max the volume flow, the maximum can deliver the pump.
- Correction factor can be calculated in advance and z. B. deposited in an engine control unit. Also, individual, some or all of the above-mentioned control parameters, in particular optimal control parameters can be calculated either during engine operation in the control unit or in dependence on a variable variable, such as the operating voltage
- the control can be parameterized according to the calculated or retrieved values.
- the duty cycle is while the one
- volume flow adjustable An increased volume flow is with a
- the length of the duty cycle can be stored as a function of the flow rate.
- the duty cycle is adjustable in dependence on the voltage applied to the coil.
- the voltage applied to the coil depends on a supply voltage of the piston pump.
- the switch-on duration can be set as a function of the coil voltage or the supply voltage.
- a drive frequency of the piston pump with which the pump performs pump strokes depending on a required
- volume flow adjustable A corresponding relationship between the pumping frequency and the volume flow can be stored for the application by means of the switching device. It is also possible to have a simultaneous one
- Circuit arrangement for operating a means of a coil of a
- Electromagnet driven piston pump proposed with a piston.
- the circuit arrangement has a
- Semiconductor switch device with at least two semiconductor switches on.
- the semiconductor switch device is configured to implement various modes of operation or cancellation method of the piston pump. It can the
- Solid-state switch means in a switch-on mode, the coil to apply a voltage, which causes a current flowing through the coil.
- the coil can be switched into a current path between a current source and a current sink of a power supply device.
- this causes a weak current quenching to take place in the coil.
- the coil can be switched out of the current path for the switch-on mode and instead be short-circuited via one or more semiconductor switches.
- Semiconductor circuit device configured to switch the coil in a current path, which comprises a power receiving device. Energy from the
- Energy absorption device designed as an energy storage, which is suitable for receiving energy from the circuit arrangement.
- it may be a capacitor and / or a battery or an accumulator.
- Energy receiving device may also be a power grid to which other consumers are connected, which can absorb energy.
- the energy absorption device is an electrical system of a motor vehicle.
- the energy absorption device is an electrical system of a motor vehicle.
- Corresponding energy absorption devices may be, for example, an ohmic resistance or a semiconductor junction.
- Circuit arrangement is configured to carry out one of the methods described above.
- a piston pump which has in a drive device, an electrical circuit arrangement according to the aspect described above. It is conceivable that the control device is spatially separated from the pump and connected to this by lines or connectable. It is also conceivable that parts of the drive device are arranged on the piston pump, while other parts are arranged away from the piston pump. Further, it is conceivable that a part of the drive means is arranged on the piston pump, while another part is removed from the piston pump and connected thereto by lines or connectable.
- Figure 1 shows a section through a Hubankerkolbenpumpe according to the prior art
- Figure 2 is a known in the art driving circuit for a
- FIG. 3 shows a diagram with a known profile of a voltage across a coil, which is driven by the drive circuit of FIG. 2,
- FIG. 4 shows a diagram with a known progression of a current over time when the coil is driven with the drive circuit from FIG. 2 for the same time period as in FIG. 3,
- FIG. 5a shows a first embodiment of a drive circuit according to the invention
- Figure 5b shows a second embodiment of a drive circuit according to the
- FIG. 5c shows a third embodiment of a drive circuit according to the invention
- FIG. 5 d shows a fourth embodiment of a drive circuit according to FIG.
- FIG. 6 shows a graph with a profile of the voltage across the coil when driven by one of the drive circuits shown in FIGS. 5a or 5b over time
- FIG. 7 shows a diagram with a current flow over time which results from the voltage on the coil shown in FIG. 6, the same time segment being illustrated in FIG. 6,
- FIG. 8a shows a third embodiment of a drive circuit according to FIG.
- FIG. 8b shows a fourth embodiment of a drive circuit according to FIG.
- FIG. 9 shows a diagram with a profile of the voltage across the coil when driven by one of the drive circuits shown in the figures 5a or 5b over time and
- FIG. 10 shows a diagram with a current flow over time which results from the voltage on the coil shown in FIG. 6, the same time segment being shown in FIG.
- FIG. 5a schematically shows a drive circuit according to the invention in one embodiment
- Circuit diagram Central to the circuit is a current path from a positive supply voltage + UB to a ground terminal GND. In this path, starting at the supply voltage + UB, a zener diode ZD1 in the forward direction, in addition to a conventional diode D1 in the reverse direction and to a first series semiconductor switch LS1 arranged in series. Parallel to the
- Zener diode ZD1 is a second semiconductor switch HS1 connected.
- a coil L coil and an internal resistance R coil can be connected to the current path by the coil can be connected in parallel with that of a series circuit of the diodes ZD1 and D1.
- the semiconductor switch HS1 is preferably formed as a p-channel MOSFET. It is via a resistor Rv2 by means of a
- the semiconductor switch LS1 is preferably a self-blocking n-channel MOSFET. It can be controlled via a series resistor Rv1 via a drive voltage VA1. In a switch-on operation, in which the coil is supplied with voltage, so that an increasing current flow results therein, the semiconductor switch LS1 can be closed, for which purpose it can be driven with a drive voltage VA1. As a result, a current flow from the supply voltage + UB through the coil and the semiconductor switch LS1 to ground GND can be formed. The path section via the diodes ZD1 and D1 is blocked because the diode D1 is reverse-connected. A change in the state of the semiconductor switch HS1 does not change the current flow, since this current through the semiconductor switch HS1 also blocked by the diode 1. According to a weak one
- the semiconductor switch LS1 is opened by the
- Semiconductor switch HS1 is closed by a gate to its gate
- Free-wheeling circuit causes the current through the coil to slowly attenuate, as can be seen in Figure 7 from a drop to a peak at about 0.0035 seconds. Further, in the drive circuit, a strong erase method can be used by both the
- Semiconductor types also other semiconductors come into consideration, in particular for the semiconductor switches.
- a change in the semiconductor types can be compensated by a corresponding change in the drive potentials to maintain the functionality.
- Figure 5b shows a second drive circuit according to the invention, which differs slightly from the drive circuit of Figure 5a. It is in the
- FIG. 5a In contrast to the drive circuit of FIG. 5a, FIG.
- Control circuit of Figure 5b instead of the Zener diode ZD1 an ohmic resistor R1. Therefore, instead of at the semiconductor junction in the Zener diode, the energy from the coil L coil ohms in the resistor R1 are converted into heat.
- FIG. 5c shows the embodiment of FIG. 5a, with the difference that the Zener diode ZD1 is not connected between the drain and source of the semiconductor switch HS, but is connected as a Zener diode ZD1 'between the drain and source of the semiconductor switch LS.
- the Zener diode ZD1 is not connected between the drain and source of the semiconductor switch HS, but is connected as a Zener diode ZD1 'between the drain and source of the semiconductor switch LS.
- Figure 5d shows the embodiment of Figure 5a, with the difference that the zener diode ZD1 is not connected between the drain and source of the semiconductor switch HS but as the zener diode ZD1 "between the drain of the semiconductor switch LS and the gate of the semiconductor switch LS1 a further diode D2 connected, which ensures that the semiconductor switch LS1 remains controllable by continuing to stress at the gate of
- Semiconductor switch LS1 is buildable. To end the duty cycle of the semiconductor switch LS1 this is opened.
- the semiconductor switch LS is designed as an n-channel MOSFET, so that in this state a low voltage is applied to the gate.
- a freewheeling circuit with weak current quenching is formed via the semiconductor switch HS1 and the diode D1.
- the semiconductor switch HS1 is opened while the coil is still energized, the voltage at the cathode of the Zener diode ZD1 "jumps to an increased potential due to the coil voltage, thereby raising the potential at the gate of the semiconductor switch LS1 so that the semiconductor switch LS1 is partially closed It turns out
- Changing the switching state of the semiconductor switch HS1 Can thus be switched between strong and weak extinguishing effect.
- the voltage between source and gate of the semiconductor switch HS1 results from the interaction of the voltage across the diode D1, the voltage at the Zener diode ZD1 ', the voltage at the diode D1 and the voltage at the resistor Rv2.
- the output of the voltage source VA2 thereby low impedance.
- semi-closed semiconductor switch HS1 drops a voltage, which leads to the rapid erasing of the coil current.
- the semiconductor switch HS1 can be completely closed, resulting in a weak erase process.
- FIG. 6 shows the course of a voltage across the coil L coil in FIGS. 5a and 5b. Over a period of time of about three milliseconds, a voltage of about 12 volts is applied. This corresponds to the switch-on duration during the switch-on operation.
- the voltage across the coil is slightly less than 0 volts, because despite the current flow through them the semiconductor switch and the forward-biased diode D1 only a small diode voltage or have a low internal resistance at the semiconductor switch HS1.
- the drive circuit goes into operation with a strong erase method.
- FIG. 7 shows the current profile during the operation of one of the drive circuits of FIGS. 5a or 5b.
- a switch-on mode from 0 to 3.5 milliseconds results in an approximately constant increase of the current up to a current spike.
- Coil current slows by about 3/4 of the maximum value at 3.5 milliseconds. At 6.5 milliseconds, the operation of the drive circuit goes to a strong one
- Figure 8a shows a fifth embodiment of the invention in the form of a
- Control circuit which can feed back coil current in a power supply device, which supplies the drive circuit with the supply voltage + UB. From the basic structure it concerns with the
- Supply voltage + UB is connected in the reverse direction, to the
- the semiconductor switches HS1 and LS1 can each be actuated by means of a drive voltage VA1 or VA2 via the respectively assigned series resistor RV1 or RV2.
- the semiconductor switch HS1 is a normally-off p-channel MOSFET, while the semiconductor switch LS1 is a normally-off n-channel MOSFET. It is conceivable to use other semiconductor switches here as well, wherein the drive logic can be adapted to it. In a switch-on operation, both semiconductor switches HS1 and LS1 are switched to passage. Therefore, electricity from the
- Supply voltage + UB provides. Due to the strong release of energy, the current in the coil L coil extinguishes very rapidly, as can be seen in FIG. 10 from the strong drop after the strong extinguishing process has been put into operation at 6.5 milliseconds. In this way, the energy in the coil is not converted into waste heat, but fed back into the power supply device.
- Figure 8b shows a fourth embodiment of the invention in the form of a
- the drive circuit is constructed as an H-bridge, wherein both branches of the H-bridge each have two semiconductor switches, namely in the left branch HS1 and LS1, and in the right branch HS2 and LS2. Between the voltage divider points between the semiconductor switches HS1 and LS1 or HS2 and LS2, the coil L coil is connected with its internal resistance R coil. The coil may be removable from the circuit, for example via
- the H-bridge is designed between a supply voltage + UB and ground GND.
- Each of the semiconductor switches HS1, HS2, LS1 and LS2 each have a conventional diode D1, D2, D3 and D4 connected in parallel, the diodes being connected to the source and drain, respectively.
- the diodes are arranged in the reverse direction with respect to the supply voltage + UB.
- a switch-on operation either the semiconductor switches HS1 and LS2 or the semiconductor switches HS2 and LS1 are switched through. Via the respectively connected to UB and connected to passage semiconductor switch HS1
- Semiconductor switch LS2 or LS1 is a current path of the
- the semiconductor switches HS1 and HS2 can pass and LS1 and LS2 are turned off. In this way, there is a freewheeling circuit in which the coil internal resistance R coil and the
- Milliseconds and 6.5 milliseconds in Figure 10 can be seen.
- all four semiconductor switches HS1, HS2, LS1 and LS2 are blocked.
- the coil current can flow only in the forward direction through two of the diodes in the power supply device, which provides the supply voltage + UB, namely in the case of a leftward current through the coil L coil, through the diodes D1 and D4, and in the case of a right through the coil L coil directed current diodes D2 and D3. In this way, a return of the coil current takes place in the power supply device.
- the semiconductor switches HS1 and HS2 are normally off p-channel MOSFETs while the semiconductor switches LS1 and LS2 are normally off n-channel MOSFETs.
- other semiconductor switch types can be used, wherein the drive logic can be adjusted accordingly.
- FIG. 9 shows a diagram of a voltage across the coil over time t.
- the supply voltage + UB is applied to the coil.
- the voltage U drops to almost zero. It is slightly negative due to the internal resistance of the opened semiconductor switch. After putting into effect the strong current extinguishing process, the voltage drops very sharply and can reach negative values greater than the magnitude of the supply voltage + UB. At such a highly negative voltage, the voltage approaches at least approximately asymptotically 0 volts.
- FIG. 10 shows a diagram in which a current through the coil over time is shown, wherein the same period of time as in FIG. 9 is shown. It can be seen that from the time 0 seconds to a time of 3.5
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- Fluid Mechanics (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Combustion & Propulsion (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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Abstract
Description
Claims
Priority Applications (3)
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JP2017540219A JP6625651B2 (ja) | 2015-01-28 | 2015-09-02 | ピストンポンプの動作方法、ピストンポンプの駆動制御装置及びピストンポンプ |
US15/546,140 US10890167B2 (en) | 2015-01-28 | 2015-09-02 | Method for operating a piston pump, control device of a piston pump, and piston pump |
CN201580074943.1A CN107208615B (zh) | 2015-01-28 | 2015-09-02 | 用于运行活塞泵的方法、活塞泵的操控装置和活塞泵 |
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DE102015201463.0A DE102015201463A1 (de) | 2015-01-28 | 2015-01-28 | Verfahren zum Betreiben einer Kolbenpumpe, einer Steuereinrichtung und Kolbenpumpe |
DE102015201463.0 | 2015-01-28 |
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WO2016119918A1 true WO2016119918A1 (de) | 2016-08-04 |
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PCT/EP2015/070063 WO2016119918A1 (de) | 2015-01-28 | 2015-09-02 | Verfahren zum betreiben einer kolbenpumpe, ansteuereinrichtung einer kolbenpumpe und kolbenpumpe |
Country Status (6)
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US (1) | US10890167B2 (de) |
JP (1) | JP6625651B2 (de) |
CN (1) | CN107208615B (de) |
DE (1) | DE102015201463A1 (de) |
TW (1) | TWI704282B (de) |
WO (1) | WO2016119918A1 (de) |
Families Citing this family (2)
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DE102016115300B4 (de) * | 2016-08-17 | 2019-03-07 | Gkn Automotive Ltd. | Aktuatoranordnung zum Betätigen einer Stelleinheit in einem Kraftfahrzeug und Kupplungsanordnung mit einer solchen Aktuatoranordnung |
DE102018222731A1 (de) * | 2018-12-21 | 2020-06-25 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Pumpe und System mit einer solchen Pumpe |
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DE102012211798A1 (de) * | 2012-07-06 | 2014-01-09 | Robert Bosch Gmbh | Verfahren zur Betätigung eines Schaltelements einer Ventileinrichtung |
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JP3613885B2 (ja) * | 1996-05-24 | 2005-01-26 | 国産電機株式会社 | 内燃機関用インジェクタの駆動制御方法及び駆動制御装置 |
US6269784B1 (en) * | 2000-04-26 | 2001-08-07 | Visteon Global Technologies, Inc. | Electrically actuable engine valve providing position output |
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JP4348961B2 (ja) * | 2003-02-12 | 2009-10-21 | 株式会社デンソー | 誘導性負荷駆動用ic |
US7150606B2 (en) * | 2003-10-28 | 2006-12-19 | Motor Components Llc | Electromagnetic fuel pump |
DE102004016554B4 (de) * | 2004-04-03 | 2008-09-25 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung eines Magnetventils |
JP2009047035A (ja) * | 2007-08-17 | 2009-03-05 | Nikki Co Ltd | 電磁燃料ポンプの制御装置 |
DE102008054512B4 (de) * | 2008-12-11 | 2021-08-05 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems einer Brennkraftmaschine |
KR20100117243A (ko) * | 2009-04-24 | 2010-11-03 | 박대기 | 펌프 |
DE102009028048A1 (de) * | 2009-07-28 | 2011-02-03 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Magnetventils, insbesondere Einspritzventils einer Kraftstoffeinspritzanlage |
JP2011144795A (ja) * | 2010-01-15 | 2011-07-28 | Kenichi Naruo | 電磁駆動マグネットピストンポンプ |
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DE102015201466A1 (de) * | 2015-01-28 | 2016-07-28 | Robert Bosch Gmbh | Verfahren zum Betreiben und Ansteuereinrichtung für eine Kolbenpumpe |
-
2015
- 2015-01-28 DE DE102015201463.0A patent/DE102015201463A1/de active Pending
- 2015-09-02 JP JP2017540219A patent/JP6625651B2/ja active Active
- 2015-09-02 US US15/546,140 patent/US10890167B2/en active Active
- 2015-09-02 CN CN201580074943.1A patent/CN107208615B/zh active Active
- 2015-09-02 WO PCT/EP2015/070063 patent/WO2016119918A1/de active Application Filing
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2016
- 2016-01-26 TW TW105102331A patent/TWI704282B/zh active
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EP1154140A2 (de) * | 2000-05-11 | 2001-11-14 | Robert Bosch Gmbh | Ansteuerschaltung zur Ansteuerung wenigstens eines Magnetventils für die Kraftstoffzumessung in einer Brennkraftmaschine |
DE10201453A1 (de) * | 2001-09-10 | 2003-05-28 | Knorr Bremse Systeme | Verfahren und Steuersystem zum Betreiben eines Magnetventiles für pneumatische Bremszylinder |
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DE102012211798A1 (de) * | 2012-07-06 | 2014-01-09 | Robert Bosch Gmbh | Verfahren zur Betätigung eines Schaltelements einer Ventileinrichtung |
Also Published As
Publication number | Publication date |
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DE102015201463A1 (de) | 2016-07-28 |
TWI704282B (zh) | 2020-09-11 |
CN107208615A (zh) | 2017-09-26 |
US10890167B2 (en) | 2021-01-12 |
TW201632726A (zh) | 2016-09-16 |
JP6625651B2 (ja) | 2019-12-25 |
US20180340522A1 (en) | 2018-11-29 |
JP2018504553A (ja) | 2018-02-15 |
CN107208615B (zh) | 2019-12-17 |
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