WO2010023001A1 - Procédé et dispositif destiné à arrêter le fonctionnement d’un moteur à combustion interne - Google Patents

Procédé et dispositif destiné à arrêter le fonctionnement d’un moteur à combustion interne Download PDF

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Publication number
WO2010023001A1
WO2010023001A1 PCT/EP2009/058314 EP2009058314W WO2010023001A1 WO 2010023001 A1 WO2010023001 A1 WO 2010023001A1 EP 2009058314 W EP2009058314 W EP 2009058314W WO 2010023001 A1 WO2010023001 A1 WO 2010023001A1
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WO
WIPO (PCT)
Prior art keywords
generator
increasing
load
power
combustion engine
Prior art date
Application number
PCT/EP2009/058314
Other languages
German (de)
English (en)
Inventor
Frank Stiegler
Armin Steck
Tim Rottstock
Patrick Ziegler
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2010023001A1 publication Critical patent/WO2010023001A1/fr

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Classifications

    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/18—Control of the engine output torque
    • F02D2250/24—Control of the engine output torque by using an external load, e.g. a generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0851—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
    • F02N11/0855—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear during engine shutdown or after engine stop before start command, e.g. pre-engagement of pinion

Definitions

  • the invention relates to the control of internal combustion engines, and more particularly to the control of internal combustion engines during a turn-off operation.
  • the document DE 1003000101 shows an apparatus and a method for the controlled shutdown of an internal combustion engine, in which the precise angular position is taken into account during the transfer of the internal combustion engine to a standstill.
  • an adjustment device sets the desired angular position.
  • An adjusting device intervenes when the internal combustion engine comes to stand in an undesired angular position.
  • the document DE 102006018960 Al describes a method for operating an internal combustion engine, wherein a similar positioning for adjusting the angular position for the resting state by means of a pressure build-up in the internal combustion engine is achieved.
  • the document describes a buildup of pressure within the internal combustion engine to bring the engine to the desired angular position as the motor shaft approaches standstill.
  • the document DE 19724921 A1 relates to avoiding vibrations during shutdown by damping vibrations by means of a device which stores a pressure. When storing the pressure, for example, starting valves or throttle valves are suitably activated in order to absorb the vibrations; the accumulator operates pneumatically.
  • document DE 19936885 C2 relates to the prevention of unpleasant shaking movements during engine shutdown with the aid of angle-dependent trigger marks, and associated periods of time in which the absolute motion of the crankshaft of the internal combustion engine is detected and which is in agreement with a cylinder dead center of the engine Internal combustion engine to determine the braking torque precisely in time.
  • the temporally precisely predetermined course of the braking torque is converted by an electric machine which is connected to the internal combustion engine and which is controlled to prevent vibrations angle-dependent, and on the other to achieve the desired angular position is controlled by a precise absolute angle-dependent control.
  • the inventive method and the control according to the invention allow a particularly simple, fast and efficient deceleration of an internal combustion engine due to a stop signal.
  • the operation of the internal combustion engine can be achieved particularly quickly with largely existing components, the components used are not exposed to particularly high loads and there are no special requirements for precision.
  • the time to a possible tracking of the starter (in a subsequent startup process) compared to the prior art can be significantly reduced. Immediate engine restart after a shutdown of the engine are thus possible.
  • the invention can be provided with inexpensive means, since on the one hand already existing components are used repeatedly, and on the other to the conversion means no particularly high requirements such as control speed or precision.
  • the invention can be implemented particularly easily, for example by simple reprogramming of a generator control or by adding a simple logic or a simple program code.
  • a stop signal is initially provided for terminating the operation of an internal combustion engine to which an electrical generator is connected, for example by an automatic control or optionally by a user input interface.
  • the electrical output of the generator is increased, thereby increasing the mechanical load on the engine, and thus decelerating the engine faster.
  • the electrical output power of the generator is increased by a predetermined amount, which is constant, or may depend on the time, the speed or other operating parameters of the generator or a load connected thereto.
  • the increase of the electric power output and thus the electric power output after detecting the stop signal does not depend on the angular position of the internal combustion engine, nor on dead centers of cylinders of the internal combustion engine.
  • the output power of the generator can firstly be increased by controlling the voltage delivered by the generator (i.e., the generator voltage) to a higher setpoint, thereby resulting in a substantially constant load, i. substantially constant load resistance reflecting the load increases the current, thereby increasing the electrical power delivered to the load and thus the power dissipated by the engine.
  • the generator i.e., the generator voltage
  • substantially constant load resistance reflecting the load increases the current, thereby increasing the electrical power delivered to the load and thus the power dissipated by the engine.
  • the generator power of the electric generator is increased by changing an operating parameter of the generator.
  • the generator power can be increased, as described above, or the effective excitation current can be increased, or a combination thereof.
  • the above procedure is equivalent to increasing the output power of the generator by providing the generator with a higher voltage, as a result of which a higher electrical power is delivered to the (otherwise nearly constant) load.
  • the power delivered to the load corresponds to the braking power applied to the internal combustion engine.
  • a constant load is not assumed, but the load itself is increased by adding a load component becomes.
  • the load is generally provided by the electrical system, wherein all electrical consumers provided in the vehicle are in principle suitable for receiving the output power of the generator.
  • the load which represents the electrical system for the generator (and thus also for the internal combustion engine) can be increased by the fact that additional consumers are switched on.
  • consumers can be switched on, which are currently not required, and which are not activated, for example, by a driver of the vehicle.
  • a rear window heater, a seat heater, a ventilation system or other electrically powered heaters, pumps or fans may be added.
  • a switched consumers are a battery charger, electronic devices or the like.
  • light-generating devices are also suitable for being connected in order to increase the output power.
  • consumers who convert electrical energy into heat since the amount of energy that is necessary for braking the internal combustion engine, and thus at least partially discharged from the generator to the load is relatively small and has only a slight warming result.
  • consumers can be switched on, the activation of which attracts no special attention of the driver. Since an additional consumer is preferably switched on only for a predetermined short operating interval of less than 10 seconds, less than 5 seconds, less than 3 seconds, less than 2 seconds or less than 1 second, it is possible that the operation of the respective consumer for Increasing the load the ride comfort only slightly or not impaired.
  • heat conversion elements and servomotors can be used, which moves a vehicle component, preferably in a reciprocating motion, wherein the same position is provided after the movement as before the movement.
  • servomotors in windows, covers, seats (whose occupancy sensor indicates a free seat) or the like can be used as additional switched load.
  • One or more similar or different consumers can be switched on. Instead of fully switching on a consumer who has not been supplied, in principle controllable loads can also be increased, for example by increasing the power level of one or more consumers or the like.
  • the above methods can also be combined to increase the electrical output of the generator by increasing the operating parameters of the generator (eg, excitation current, generator voltage, and the like), and simultaneously (or subsequently) consumers be switched or loads by changing the power level with respect to the supplied electrical power can be increased.
  • the output power of the generator can be achieved by increasing the excitation current, for example by increasing a duty cycle, with which the excitation current is clocked, or by increasing the generator output voltage, which is provided for example by a generator control, preferably the setting of the generator voltage. Setpoint is increased.
  • the increase of these operating parameters of the generator or the generator control can be provided particularly simple by a maximum value is set, for example, a duty cycle of 100%, a maximum permissible excitation current, or a maximum allowable generator voltage, which is delivered to the electrical system.
  • a maximum value is set, for example, a duty cycle of 100%, a maximum permissible excitation current, or a maximum allowable generator voltage, which is delivered to the electrical system.
  • Such maximum values are easily adjustable and generally predetermined, easy to specify or simply retrieve. Adjustment by appropriate control may be provided by providing the controller with a stop signal that detects the presence of a stop signal (for example, issued by a parent drive controller), then the appropriate controller or controller Control that sets at least a part of the operating parameters of the generator, anara or sets one or more corresponding maximum values.
  • the discharge load provided by a load connected to the generator can be increased by setting a corresponding load control or load control to a higher load level or setting it to a maximum load level.
  • a load component that was not previously connected may be connected to the generator upon the occurrence of a full rated stop signal, or to a vehicle electrical system powered by the generator.
  • the step of increasing the electrical output (whether by increasing the load, by increasing the generator voltage, or a combination thereof) is limited to a period of time before and after which the output is not increased.
  • the period of time begins with the detection of the stop signal immediately thereafter (or only slightly delayed) and ends after the lapse of a predetermined period of time, which is, for example, a constant predetermined value, or ends with the stoppage of the internal combustion engine, wherein the stoppage of the internal combustion engine is detected by determining the speed of the internal combustion engine, for example by detecting the frequency of the phase voltage of the generator.
  • a predetermined period of time which is, for example, a constant predetermined value, or ends with the stoppage of the internal combustion engine, wherein the stoppage of the internal combustion engine is detected by determining the speed of the internal combustion engine, for example by detecting the frequency of the phase voltage of the generator.
  • increasing the output power may be terminated when the speed of the generator falls below a minimum value, for example less than 200 l / min or less than 100 l / min. If the end of the increase is dependent on the speed of the engine, the speed may be determined by detecting the frequency or zero crossings of the phase voltage of the generator, by angle sensors of the internal combustion engine or by coupling to a drive control in which the speed value is used.
  • the increase of the electrical output power is preferably done by an amount that allows a significant deceleration of the internal combustion engine during the stop process.
  • the additional power amount resulting from increasing the electrical output power according to one of the above-mentioned possibilities preferably corresponds to at least 20%, 50% or 80% of the output power of the generator that was provided before the increase.
  • the (at least) the energy of the crankshaft flywheel and associated gears or shafts at the speed at which the engine rotates at the start of the starting operation must be extracted from the drive shaft of the internal combustion engine.
  • the additional power amount which results from the increase in the electrical output, preferably results in a withdrawn energy corresponding to a proportion of at least 20%, at least 50% or at least 80% of the rotational energy of the internal combustion engine.
  • the additional power amount integrated over the time period preferably provides a substantial portion of the kinetic energy stored in the internal combustion engine, i. a share of at least 10%, at least 20%, at least 50% or at least 80%. This proportion of energy can be dissipated by increasing the operating parameters of the generator, by increasing the load or by both.
  • every electric machine is suitable.
  • electric machines with excitation winding or permanently excited electrical machines, in which case the increase in electrical power output by increasing the load is provided
  • self-excited or foreign-excited electric machines DC machines, AC power machines, multiphase AC machines with rectifier circuit and Control, such as starter generators, starters, starters or alternators of a motor vehicle drive.
  • electrical machines are also suitable as a generator, as used, for example, in hybrid drives for generating recuperation power, traction power and / or for supplying the vehicle electrical system.
  • starter generators are suitable for start / stop drives which, on the one hand, are used as starters of the internal combustion engine and, on the other hand, as generators for the vehicle electrical system.
  • optimized conventional starters, belt-driven starter generators and permanently starter starters used in start / stop drives of combustion engine-powered motor vehicles or used in other drives of motor vehicles.
  • a belt-driven starter generator can be used as a generator.
  • the invention can be implemented by carrying out the above-mentioned process steps or by a controller which behaves according to the above-mentioned method.
  • a controller preferably comprises a stop signal input, a control output and an increasing means arranged to increase the operating parameters of the generator, or which is set up to increase the load by switching on the load, or which is set up, both generator operating parameters as well as load increase.
  • the increasing means communicates with the connectable generator or with the connectable consumers via the control output, wherein the stop signal input is arranged to receive the stop signal and thus can be connected to a source of the stop signal.
  • a higher-level driving mode control or a user interface with which the driver can issue a stop request for example a stop switch, is suitable as the source.
  • the controller preferably further comprises a time interval circuit for providing the time period during which the controller provides the electrical output by controlling the loads, the generator, or both.
  • the time interval circuit is connected to the stop signal input to detect the beginning and to communicate via a connection with the increasing means the increasing means over the beginning of the time period during which is increased.
  • the time interval circuit is arranged to detect the end of the time period T and at the end of the time period T to control the increasing means to end the step of increasing, the time period T may be predetermined (for example via an input or via a stored value) or wherein a speed detection device, for example, a speed input recognizes the stoppage of the internal combustion engine or a speed below a threshold value, and accordingly transmits the time interval circuit, that the internal combustion engine has entered the idle state.
  • the time interval circuit is therefore arranged to terminate the time period T and to control the increasing means in accordance with the rotational speed (which is zero or less than a threshold value).
  • the judgment is preferably carried out by a comparator which compares a current speed signal with 0 or with the threshold value.
  • the controller may include programmable or hard-wired logic that compares the speed with a predetermined value, such as zero or a threshold, to detect the idle state.
  • the increasing means comprises a signal generator which can output an operating parameter signal which corresponds to a default or a maximum value.
  • the operating parameter value values representing the exciting current, the generator voltage or the exciting current duty ratio are suitable.
  • the controller is set up to output the operating parameter signal via the control output, for example to a generator that can be connected thereto, to a controller of the generator, to a controller of the generator or to another component with which at least one operating parameter of the generator can be set.
  • the controller may further include a consumer control output that may provide a switching signal in accordance with which connectable loads are switched on and off.
  • the consumer control output is thus connected to the increasing means for outputting, in accordance with an increase to be made, a load switching signal or load disconnecting signal (after the increase) and supplying it via the load control output to a connectable load.
  • the output power of the generator is increased, regardless of an absolute angular position of the internal combustion engine, so that no precise control is necessary.
  • the operation of the internal combustion engine is preferably terminated by interrupting the fuel supply, for example by switching off a fuel pump, the interruption of the fuel supply preferably simultaneously with the detection of the stop signal, simultaneously with the increase of the electrical output or with the detection of the fuel Stop signal, after the detection of the stop signal, is provided with the beginning of the increase or before the beginning of the increase of the electrical output power.
  • the electrical output is increased with the beginning of the interruption of the fuel supply, or the step of increasing begins a predetermined period of time after the interruption of the fuel supply, to ensure that the deceleration process provided by the invention does not interfere with the operation of the internal combustion engine. even with reduced fuel supply) overlaps.
  • Show it 1 shows a speed curve according to the prior art and according to the inventive method
  • Figure 2 shows the course of an associated generator target voltage according to an embodiment of the invention
  • Figure 3 is a system implementing the invention as an overview.
  • the speed threshold corresponds in Figure 1 a maximum Einspur loftiere, below which a starter can track, above which, however, no Einspurung is possible. Therefore, with the erf ⁇ ndungs- brake mechanism already at the time Ti, a starter be re-interpolated, whereas without the inventive braking mechanism, the curve yields curve 10, in which only much later the maximum single-track speed is reached.
  • the course is linear and essentially corresponds to a realistic engine runout, it can occur any kind of gradients, which are strictly monotone decreasing.
  • FIG. 2 shows an associated profile of the generator voltage which, according to the invention, is increased from the time T 0 , ie from the detection of the stop signal. While before the time T 0, a normal generator voltage U nO rmai is provided, as it corresponds to a conventional control situation, the generator voltage jumps to the maximum generator voltage at time T 0 , ie when detecting the stop signal.
  • the generator voltage shown in Figure 2 shows the generator voltage setpoint input to a generator controller, but may also correspond to the actual terminal voltage at the generator output. Furthermore, it can be seen from FIG. 2 that the increase in the output power of the generator is terminated by increasing the generator voltage at the time Ti, since the speed threshold has been reached at this point in time (see FIG.
  • the generator is again operated in a conventional manner, ie according to a normal generator voltage U nO rmai, which may correspond to the actual terminal generator voltage, or may correspond to the target specification, the Generator controller is entered.
  • U nO rmai which may correspond to the actual terminal generator voltage, or may correspond to the target specification
  • the Generator controller is entered.
  • the generator voltage can be increased in a ramp, resulting in a more stable control, when the generator voltage is output as a target value to a controller.
  • the generator voltage can not be abruptly reduced, but can be reduced according to a predetermined ramp.
  • FIG. 3 shows a device which is suitable for implementing the method according to the invention.
  • the apparatus illustrated in FIG. 3 comprises a generator 100 and a controller 110 which is connected via a control output to a control input of the generator regulator 100 and which controls at least one operating parameter, for example the generator voltage, of the generator regulator 100.
  • the output of the generator 100 is connected to a vehicle electrical system 120, which comprises an accumulator 130, as well as switchable consumers 140a-d.
  • the controller 110 for example a control device that controls the generator controller and thus the generator 100 in accordance with a stop signal (for example transmitted via a stop signal input) such that the controller of the generator 100, for example provides an increased generator voltage for the generator.
  • a stop signal for example transmitted via a stop signal input
  • the generator outputs to the vehicle electrical system 120 an increased voltage which, on the one hand, causes the battery 130 to represent an increased load, since it is charged with an increased current, and because the consumers 140a, b are charged with a higher supply voltage which leads to a higher current flow and thus to a higher converted electrical power.
  • control unit 110 may be connected to the switchable consumers 140a-d in order to switch them on or to disconnect them again from the vehicle electrical system 130.
  • the controller 110 may close the switches of the switchable loads 140c and d so that the on-board network 120 next to the loads 130 and 140a, b the consumers 140c and d as a load for the generator 100 provides.
  • a connection can also be increased a duty cycle, with which the corresponding load current is clocked.
  • the generator Due to the increased operating parameters (generator voltage) as well as the increased electrical power output by connecting the load 140c, 14Od, the generator is a higher mechanical load for a connected internal combustion engine (not shown).
  • the generator corresponds to a converter of mechanical or kinetic rotational power into electrical power so that the higher electrical load is also provided directly as an increased mechanical load on the internal combustion engine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L’invention concerne un procédé destiné à arrêter le fonctionnement d’un moteur à combustion interne entraînant un générateur électrique. Tout d’abord, un signal d’arrêt est détecté. Ensuite, la puissance utile électrique du générateur est augmentée, et la puissance de rotation augmentée du moteur à combustion interne est transmise au générateur. En outre, l’invention concerne une commande permettant de mettre en œuvre le procédé selon l’invention.
PCT/EP2009/058314 2008-08-26 2009-07-02 Procédé et dispositif destiné à arrêter le fonctionnement d’un moteur à combustion interne WO2010023001A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810041535 DE102008041535A1 (de) 2008-08-26 2008-08-26 Verfahren und Vorrichtung zum Beenden des Betriebs eines Verbrennungsmotors
DE102008041535.9 2008-08-26

Publications (1)

Publication Number Publication Date
WO2010023001A1 true WO2010023001A1 (fr) 2010-03-04

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PCT/EP2009/058314 WO2010023001A1 (fr) 2008-08-26 2009-07-02 Procédé et dispositif destiné à arrêter le fonctionnement d’un moteur à combustion interne

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DE (1) DE102008041535A1 (fr)
WO (1) WO2010023001A1 (fr)

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JP2015139242A (ja) * 2014-01-21 2015-07-30 トヨタ自動車株式会社 内燃機関の制御装置

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US8347855B2 (en) 2010-05-13 2013-01-08 GM Global Technology Operations LLC Control system and method for improving engine stop-start response time
DE102010032087A1 (de) 2010-07-23 2012-01-26 Daimler Ag Verfahren und Vorrichtung zum Stoppen eines Verbrennungsmotors
DE102011007692A1 (de) * 2011-04-19 2012-10-25 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zum Starten eines in einem Fahrzeug angeordneten Verbrennungsmotors
DE102012202352A1 (de) * 2012-02-16 2013-08-22 Schaeffler Technologies AG & Co. KG Generatorsteuerung in einem KFZ Bordnetz
JP2015101299A (ja) * 2013-11-27 2015-06-04 トヨタ自動車株式会社 エンジン制御装置
FR3056359A1 (fr) * 2016-09-21 2018-03-23 Valeo Equipements Electriques Moteur Alternateur comportant une fonction d'aide a l'arret d'un moteur thermique de vehicule automobile
FR3078214B1 (fr) * 2018-02-22 2020-03-20 Valeo Equipements Electriques Moteur Procede d'assistance au calage d'un moteur thermique par une machine electrique tournante

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JPH0932707A (ja) * 1995-07-24 1997-02-04 Hino Motors Ltd エンジンの強制停止装置
JP2000316205A (ja) * 1999-04-27 2000-11-14 Denso Corp 車両用動力装置
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DE10030001A1 (de) 1999-12-28 2001-07-12 Bosch Gmbh Robert Vorrichtung und Verfahren zum kontrollierten Abstellen einer Brennkraftmaschine
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JPH0932707A (ja) * 1995-07-24 1997-02-04 Hino Motors Ltd エンジンの強制停止装置
JP2000316205A (ja) * 1999-04-27 2000-11-14 Denso Corp 車両用動力装置
JP2004293327A (ja) * 2003-03-25 2004-10-21 Mitsubishi Motors Corp エンジンの自動停止装置
DE102006028334A1 (de) * 2005-06-29 2007-01-11 Ford Global Technologies, LLC, Dearborn Vorrichtung und Verfahren zum Steuern von Motorabschaltung

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Publication number Priority date Publication date Assignee Title
JP2015139242A (ja) * 2014-01-21 2015-07-30 トヨタ自動車株式会社 内燃機関の制御装置

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