WO2004106102A1 - Motor vehicle drive device - Google Patents

Motor vehicle drive device Download PDF

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Publication number
WO2004106102A1
WO2004106102A1 PCT/EP2004/004651 EP2004004651W WO2004106102A1 WO 2004106102 A1 WO2004106102 A1 WO 2004106102A1 EP 2004004651 W EP2004004651 W EP 2004004651W WO 2004106102 A1 WO2004106102 A1 WO 2004106102A1
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WO
Grant status
Application
Patent type
Prior art keywords
torque
electric machine
vehicle
braking
control device
Prior art date
Application number
PCT/EP2004/004651
Other languages
German (de)
French (fr)
Inventor
Harald Braun
Norbert Ebner
Michael Fischer
Michael Schopper
Original Assignee
Daimlerchrysler Ag
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

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00Control systems specially adapted for hybrid vehicles
    • B60W20/10Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48Parallel type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/10Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00Control systems specially adapted for hybrid vehicles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/50Intelligent control systems, e.g. conjoint control
    • Y02T10/56Optimising drivetrain operating point
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles
    • Y02T10/6213Hybrid vehicles using ICE and electric energy storage, i.e. battery, capacitor
    • Y02T10/6221Hybrid vehicles using ICE and electric energy storage, i.e. battery, capacitor of the parallel type

Abstract

The invention relates to a motor vehicle drive device comprising an internal combustion engine (2) and at least one electrical machine (16), which can be operated as a generator for recuperating electric current from dynamic traveling energy of the motor vehicle. An electronic control device (40) is designed for determining how much braking torque is permitted on the vehicle axle (8), to which the electrical machine is drive-connected or can be drive-connected, according to at least one predetermined driving stability criterion. The electronic control device is also designed for determining the maximally available recuperation torque of the electrical machine serving as the generator that is established based on the difference between the vehicle electric system demands and battery demands placed on the electrical machine and the maximally producible recuperation torque of the electrical machine during the operation of the generator.

Description

DaimlerChrysler AG

Motor vehicle drive device

The invention relates to a motor vehicle drive device according to the preamble of claim. 1

A Kraftfahrezug drive device of this type is known from DE 100 46 631 AI. It discloses a method for regulating a generator in a motor vehicle wherein a generator is an electric system with consumers and at least one battery fed. In a recuperation readiness mode, the target value of the generator output voltage as a function of the driving state variables is predetermined such that electrical energy is fed into the vehicle electrical system during deceleration or coasting of the vehicle. The generator voltage determines the direction and the magnitude of the electrical charge flow to the battery, so that charging and discharging cycles result. Further, AI, in DE 43 07 907 proposed to lower the generator voltage during acceleration of the motor vehicle in order to relieve the internal combustion engine, and to increase the generator voltage during deceleration of the motor vehicle, so that the generator for charging the battery by re kuperation of braking energy more can absorb power. By matching the driving state of the motor vehicle set value of the generator voltage, the power flow between the battery, generator and load is controlled.

A change in the voltage setting on the generator always produces an unpredictable torque curve. This noticeable jerks in the motor vehicle are unavoidable. It has also been proposed to cut to reduce the shock strength, the re kuperationspotenzial by ramps and narrow limits. For small delay requirements to the motor vehicle, it is not possible to achieve a fast and at the same time not noticeable torque build a voltage ramp.

Through the invention, the problem to be solved is to overcome these drawbacks. Through the invention, the object as much braking energy of the braking request by recuperation of one or more than e lectric machines operated generators should in particular be solved at a brake request to the motor vehicle applied instead without affecting by the brake system, the stability of the motor vehicle.

This object is achieved according to the invention by the features of claim. 1

Further features of the invention are contained in the subclaims.

The solution according to the invention consists of functions in a motor control device of the internal combustion engine, in the electrical system and in the brake system. From the onboard network and generator Information of the electrical machine, the engine control unit calculates the maximum possible recuperation torque, which is still within allowable voltage and current limits of the electrical system and the battery. This recuperation is sent continuously to an automatic brake coordinator, so that there, as soon as a braking operation by the driver or a technical device is introduced, a regeneration torque is required and simultaneously a decreased by this value braking request is given to the drive wheels. The motor controller now controls the generator at the moment mode, the required torque. In the present specification, the term each electrical machine instead of generator used, as preferably an electric machine is used, which is alternatively operable as a generator or as an electric motor. The division of the control functions on the engine control unit and the brake coordinator is only an example mentioned here. In the context of the following description will be made only to each an electronic control device regarding which performs the functions concerned. This simplification of the description, however, does not mean that the engine control unit and the brake coordinator need to be integrated into a single controller. The above and hereinafter to be described functions of the electronic control device can be executed by a single device or a plurality of devices.

The inventive moment guiding a previously predictable and therefore predictable repeatability of recuperated energy peration processes can be achieved.

By the brake coordination of any size recuperation can onsmomente be switched without an influence is given to the driving stability on the relevant vehicle axle.

There are all the delays that must be carried out in a motor vehicle, capable of being implemented as recuperation.

The inventive regenerative braking torque with a guide (guide of the torque of the electric machine) allowing the torque build-up for the driver and thus always takes place identically predictable. can a variable brake force distribution a brake coordinator, which is part of the electronic control device, make sure that regardless of realizable recovery torque at the drive axle always optimal torque distribution is achieved on all vehicle wheels so that disadvantages as to words driving stability.

For the invention, both electrical machines or generators with excitation coil and electrical machines which are permanently excited suitable. For an electrical machine or an alternator having field coil is a diagram for example, can be stored, which on an axis, the generator speeds, on the other axis the excitation current and between these graph axes includes a plurality of torque curves, so that the control device for each torque depending on can detect a certain speed the corresponding excitation current. From two sizes the same third size of the chart can be read or calculated by the control device.

In the case of permanently excited electrical machines, a diagram can be stored having each applied to a chart axis, the rotational speeds of the generator and on another axis of the diagram torques of the generator. The torques can be determined, for example by means of current sensors and current measurements corresponding torque calculation.

The respective speed of the electric machine can be taken from the engine control unit measured either by sensors or, as the firing orders of the internal combustion engine are in relation to the electrical machine speed. A translation or reduction in the drive connection between the electric machine and the driving power train, if present, may be addressed through a translation or reduction factor of said control means. If the electrical machine is arranged between the internal combustion engine and a change gear transmission, but between a speed change gear and driven vehicle wheels, the respective translation can also be taken into account by the control device.

The invention is described below with reference to a preferred exemplary form of example with reference to the accompanying drawings. The drawing shows in

Fig. 1 shows schematically a motor vehicle drive device having an electronic control device according to the invention.

Fig. 1 shows a motor vehicle drive device with an internal combustion engine 2, a travel drive train 4 with an automatic or manual transmission 6 from the engine 2 to a driven vehicle axle 8 of vehicle wheels 10. A further vehicle axle 12 is further vehicle wheels 14 a non-driven axle but could also be a driven axle.

An electrical machine 16 is drivably connected through a drive connection 18 with the traveling power train 4 (or connectable), preferably with the strand section 20 6. between the engine 2 and the gearbox, the drive connection 18 may be a translation or reduction. Normally, a translation is provided in such a way that the electrical machine 16 rotates about three times faster than the strand section 20th

The electric machine 16 is operable as a generator and developing from the internal combustion engine 2 can be driven to generate electricity for a vehicle power supply 22 with a battery 24 and electrical loads 26 (vehicle interior lighting, vehicle exterior lighting, air conditioning, radio, etc.). The generator 26 may instead be driven by the engine 2 of the vehicle wheels 10 of the driven vehicle axle 8 to generate electricity for the vehicle power supply 22. The latter mode of operation in which the generator 16 is driven by the vehicle wheels 10, also the recuperation mode is called as the dynamic energy of the vehicle is converted into electrical energy.

The electric machine 16 is preferably operable not only as a generator but also as an electric motor. As e- lectrical motor, it can be used as starter motor for starting the internal combustion engine 2 and / or Drehmomentabgäbe be used at the driven vehicle wheels 10th

A brake system 28 of the vehicle includes brakes 30 at the vehicle wheels 10 and 14, and a brake force distributor 32nd

Further, FIG. 1 shows a brake pedal 34, an accelerator pedal 36 and a steering wheel 38th

As a single device or as a plurality of devices, an electronic control device 40 is provided for controlling the engine 2, the electric machine 16 and the brake system 28. The controller 40 shown schematically thus represents an electronic engine control for the internal combustion engine 2, an electronic control for controlling the electric machine 16, and an electronic control unit (brake coordinator) for controlling the brake system 28. the controller 40 also includes control or regulation measures to driving stability, z. B. Criteria for preventing one or more vehicle wheels 10 and / or 14 block, or by rotating and / or for producing anti-spin moment to the vehicle wheels 10 and / or 14. It is stored at least one such driving stability criterion. Preferably, however, more of these and / or other vehicle stability criteria are stored and executed by computer programs.

An acceleration request to the vehicle can be carried out by the driver by depressing the accelerator pedal 16 or by an automatic drive controller, for example, by a so-called cruise control, by which the vehicle speed is automatically maintained constant irrespective of the running resistance of the vehicle on the road. A braking request to the motor vehicle can be provided for example by the driver by actuating the brake pedal 34, or automatically, for example by the above-mentioned cruise control when the vehicle begins to accelerate when traveling downhill, or by a spacer for automatically maintaining a minimum distance to an obstacle front of the vehicle. Depending on the type of vehicle one or more such or other measures can be provided for influencing the driving behavior of the motor vehicle.

According to the invention, the electronic control device 40 is configured such that it determines at a predetermined clock frequency in each case, how much braking torque to the at least one vehicle axle 8, with which the electrical machine is drivingly connected 16, in response to at least one predetermined driving stability criterion in a braking requirement in each case is permitted. In addition, the control means determines which is the current maximum available each regeneration torque of the electrical machine 16 as a generator. The maximum available regeneration torque of the electric motor 16 is calculated by the control device 40 respectively from the difference between the current load torque of the electric machine 16 when charging operation of the battery 24 and at a predetermined torque of the electric machine at a predetermined maximum allowable vehicle electrical system voltage in recuperation.

The controller 40 distributes the braking request recuperated energy peration optimized for the vehicle axles 8 and 12, so that therefrom a resulting braking demand torque to the vehicle axle 8 yields with which the electrical machine is drivingly connected sixteenth This means that as a generator on the drivable axle 8 producible recuperation torque has the maximum value of the electric machine 16, taking into account at least one driving stability criterion and under consideration of the fact that the electric machine 16 acts only on the drivable axis 8 However, the braking system 28 acting on the brakes 30 of each vehicle wheel 10 and the fourteenth The vehicle wheels 10 of the driven vehicle axle 8 get the whole braking torque by the electric machine 16 in generator mode, to the extent sufficient to cover the braking torque requirements of these vehicle wheels 10th An optionally insufficient torque component is generated in these vehicle wheels 10 of the brake system 28th The vehicle wheels 14 of the non-driven vehicle axle 12 are acted upon only by the remaining portion of the total required braking torque from the brake system 28th The braking torque distribution to all wheels 10 and 14 is effected in dependence on driving stability criteria by the control device 40th

The controller 40 is designed to carry out a comparison between the maximum available regeneration torque of the electrical machine 16 as a generator, the resulting braking demand torque to the brake system. Further, the controller 40 is configured such that when the recovery torque maximum available is less than the resulting braking demand torque to the drive-connected to the electric machine 16 vehicle axle 8, is requesting the torque maximum available the electric machine of this electric machine and the lack of torque component to the resulting braking demand torque requests of the brake system 28th However, if the maximum available regeneration torque of the electric machine 16 is equal to or greater than the resulting braking demand torque to the to the electrical machine drivingly connected to the vehicle axle 16, then only the resulting braking request torque requested from the electric machine by the control device 40 and from the brake system of this vehicle axle 8 no braking torque requested.

According to a preferred embodiment of the invention, the control device 40 is configured such that it carries out in the rekupe- rationsoptimierten distribution of the braking demand torque to the vehicle axles 8 and 12, this distribution as a function of at least one predetermined driving stability criterion. This may be one of the aforementioned driving stability criteria or another.

According to a preferred embodiment of the invention, the electronic control device 40 is formed by 16 to calculate the respective current maximum available recuperation of e- lektrischen machine in response to a predetermined allowable maximum voltage limit of the vehicle electrical system 22 in response to a predetermined permissible minimum voltage limit of the on-board network , depending on the current battery charge voltage value as a function of the electric currents of the electrical system and the battery, which result from the above three voltage values, and a function of generating information of the electrical machines 16, which are stored in the control device 40 and in relation each of the control means provide the connection between the rotational speed of the electric machine 16, electric current of the electrical system 22 and consequent torque of electric machine 16 as a generator in the three different operating points, which are given at said maximum voltage limit value at which said minimum voltage limit, and in which the current charging voltage value. The resulting, calculable from the controller 40 maximum available regeneration torque of the electric machine 16 is the difference between the current torque of the electric machine in the actual charging voltage value and the torque of the electric machine in which said maximum voltage value at recuperation of the electric machine 16 operating in the generator operation.

Claims

DaimlerChrysler AG
claims
Motor vehicle drive device comprising an internal combustion engine (2), a traveling drive train (4) from the combustion engine (2) to the vehicle wheels (10) of at least one drivable vehicle axle (8); at least one electric machine (16) which is operable to recuperation of electric energy from dynamic vehicle power as a generator and the driven vehicle axle (8) drivingly connected or connectable; a brake system (28) for braking of the vehicle wheels (10,14) of at least two vehicle axles (8,12), of which at least one is a driven vehicle axle (8); an on-board network (22) with electrical loads (26) and having at least one battery (24) which is charged by the electric machine (16); an electronic control device (40) having a motor control for the internal combustion engine (2); characterized in that in order to apply as much braking energy of the brake demand by the at least one electric machine (16) rather than by the brake system (28) in a brake request to the motor vehicle, said control means (40) also for controlling or regulating the electric machine (16) and the brake system (28) is formed; wherein said control means (40) is designed to determine how much braking torque to the at least one vehicle axle (8), with which the electric machine (16) is drivingly connected, criterion in dependence of at least one predetermined driving stability at a braking request is in each case allowed, and to determine which is the respective current maximum available regeneration torque of the electric machine (16), said recovery torque maximum available by the control device (40) from the difference between the respectively currently required load torque of the electric machine (16) for charging the battery (24) and a predetermined torque of the e- lektrischen machine (16) at a predetermined maximum allowable vehicle electrical system voltage can be calculated at recuperation; that the control device (40) rekuperationsoptimiert the moment of the braking request of the vehicle axles (8,12) are distributed, so that it results in a resulting braking request torque for the vehicle axle (8), with which the electric machine (16) drivingly connected or connectable; that the control device (40) is designed for carrying out a comparison between the maximum available recuperation and the resulting braking requirement torque, and is further designed such that by it when the regeneration torque maximum available is less than the resultant braking requirement torque drivingly to the electric machine connected or connectable to the vehicle axle (8), the maximum available torque of the electric machine (16) is required and the lack of torque component to the resulting braking request torque of the brake system (28) is required, however, if the regeneration torque maximum available equal to or greater is defined as the resulting braking torque to the request with the electric machine (16) drivingly connected or connectable to the vehicle axle (8), only the resulting braking request torque of the electric machine (16) is requested, and by the Bremsa nLocated (28) of this vehicle axle, no braking torque is required. Motor vehicle drive device according to claim 1, characterized in that the control device (40) is also formed such that they on the vehicle axles in the rekuperationsoptimierten distribution of the braking request torque (8,12) making the distribution as a function of at least one predetermined driving stability criterion.
Motor vehicle drive device according to claim 1 or 2, characterized in that the control device (40) is designed to calculate the respective current maximum available regeneration torque of the electric machine (16) in response to a predetermined allowable maximum voltage limit of the on-board network (22), of a predetermined permissible minimum voltage threshold of the electrical system, from the current battery voltage value of the electric currents of the electrical system and the battery, which result from the above three voltage values, and a function of generating information of the electrical machines (16) which (in the control means 40) are stored in relation to each other and the control means provide the connection between the rotational speed of the electric machine (16), electric current of the electrical system (22) and consequent torque of the electric machine (16) as a generator in the three untersch iedlichen operating points, which are given at said maximum voltage limit value at which said minimum voltage limit, and in which the current charging voltage value, wherein the resulting, calculable from the control means maximum available regeneration torque of the electric machine (16) the difference between the current torque of the electric machine when the current charging voltage value and the torque of the electric machine in which said maximum voltage value at re of the electrical machine as a generator is kuperationsbetrieb.
Motor vehicle drive device according to at least one of the preceding claims, characterized in that the electric machine (16) via a translatable or translated mechanical drive connection (18) with the traveling power train (4) drivingly connected or connectable and that the control device is adapted to in the computation of the torques of e- lektrischen machine (16) to budget for the respective speed or reduction.
Motor vehicle drive device according to any one of the preceding claims, characterized in that the control device (40) is designed for cyclically repetitive visits to the said electrical values ​​of said torque and the current rotational speed of the electric machine with a predetermined clock frequency.
PCT/EP2004/004651 2003-06-03 2004-05-03 Motor vehicle drive device WO2004106102A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10324948.6 2003-06-03
DE2003124948 DE10324948A1 (en) 2003-06-03 2003-06-03 Motor vehicle drive device

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US8229639B2 (en) 2009-02-17 2012-07-24 Lockheed Martin Corporation System and method for stability control
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DE102008058669B4 (en) * 2008-11-22 2017-12-14 Bayerische Motoren Werke Aktiengesellschaft Method for controlling the Rekuperationsstärke or Rekuperationsmoments an electrical machine of a hybrid or electric vehicle
DE102009056160A1 (en) 2009-11-27 2011-06-01 Bayerische Motoren Werke Aktiengesellschaft A method for controlling a drive unit of a motor vehicle
DE102013218999A1 (en) 2013-09-20 2015-03-26 Zf Friedrichshafen Ag A method for determining a secure regeneration torque of an electric machine
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US8589049B2 (en) 2007-12-03 2013-11-19 Lockheed Martin Corporation GPS-based system and method for controlling vehicle characteristics based on terrain
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US8229639B2 (en) 2009-02-17 2012-07-24 Lockheed Martin Corporation System and method for stability control
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