WO2015135672A2 - Procédé pour faire fonctionner une chaîne cinématique hybride hydraulique - Google Patents

Procédé pour faire fonctionner une chaîne cinématique hybride hydraulique Download PDF

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Publication number
WO2015135672A2
WO2015135672A2 PCT/EP2015/051237 EP2015051237W WO2015135672A2 WO 2015135672 A2 WO2015135672 A2 WO 2015135672A2 EP 2015051237 W EP2015051237 W EP 2015051237W WO 2015135672 A2 WO2015135672 A2 WO 2015135672A2
Authority
WO
WIPO (PCT)
Prior art keywords
drive
hydraulic
hydraulic machine
speed
secondary drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/051237
Other languages
German (de)
English (en)
Other versions
WO2015135672A3 (fr
Inventor
Martin Wegscheider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 WO2015135672A2 publication Critical patent/WO2015135672A2/fr
Publication of WO2015135672A3 publication Critical patent/WO2015135672A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/101—Infinitely variable gearings
    • B60W10/103—Infinitely variable gearings of fluid type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
    • B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/02—Clutches
    • B60W2710/025—Clutch slip, i.e. difference between input and output speeds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/70—Control of gearings
    • B60Y2300/73—Synchronisation of shaft speeds
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the invention relates to a method for operating a
  • Hydraulic hybrid powertrain with a primary drive and a
  • a secondary drive comprising at least one hydraulic machine, which is associated with a coupling and synchronizing device, which allows a drive-off of the secondary drive to a with the
  • Hydraulic hybrid powertrain equipped motor vehicle to drive only with the primary drive.
  • the invention further relates to a
  • Hydraulic hybrid powertrain operated according to such method.
  • Hybrid drive for a motor vehicle in which a hydraulically operated energy converter and a combustible gas-powered energy converter interact.
  • the object of the invention is to improve ride comfort when operating a
  • Hydraulic hybrid powertrain with a primary drive and a
  • a secondary drive comprising at least one hydraulic machine, which is associated with a coupling and synchronizing device, which allows a drive-off of the secondary drive to a with the
  • the object is in a method for operating a
  • Hydraulic hybrid powertrain with a primary drive and a
  • a secondary drive comprising at least one hydraulic machine, which is associated with a coupling and synchronizing device, which allows a drive-off of the secondary drive to a with the
  • Hydraulic hybrid powertrain equipped motor vehicle to drive only with the primary drive, achieved in that the hydraulic machine in a relevant speed range, in which the
  • Hydraulic hybrid powertrain is driven only with the primary drive and in which a drive-related connection of the secondary drive is expected to be pre-synchronized. As a result, the synchronization duration of the hydraulic machine can be considerably reduced when the secondary drive is connected in drive mode.
  • the primary drive is
  • an internal combustion engine which is also referred to as an internal combustion engine.
  • a further preferred embodiment of the method is characterized in that the hydraulic machine is brought to a speed during Vorsynchron obtain, which is in the vicinity of a target speed required for synchronization.
  • the target speed is a speed at which a synchronization operation can be performed.
  • different speeds of a shift stage and a gear wheel are adjusted to allow switching between two gear ratios.
  • the target speed may also be referred to as the target speed for a synchronization operation.
  • the target speed or target speed can, for example, by Driving tests determined and in a suitable storage device,
  • a further preferred embodiment of the method is characterized in that the hydraulic machine is brought to an average speed during Vorsynchrone.
  • the average speed corresponds for example to about half the target speed.
  • the time required for Vorsynchrone can be reduced.
  • a further preferred embodiment of the method is characterized in that the average speed corresponds to half the target speed.
  • a further preferred embodiment of the method is characterized in that the hydraulic machine is pre-synchronized in a speed range between a relatively high and a relatively low speed.
  • the motor vehicle with the hydraulic hybrid powertrain is advantageously driven at relatively high speeds only by the primary drive. At relatively low speeds, the motor vehicle equipped with the hydraulic hybrid powertrain is driven with both drives, possibly only with the secondary drive.
  • a further preferred embodiment of the method is characterized in that the hydraulic machine is pre-synchronized in a speed range below one hundred kilometers per hour.
  • pre-synchronization occurs at a speed of seventy kilometers per hour. It is also possible to specify a plurality of speed ranges in which pre-synchronization to different target speeds is performed.
  • a further preferred embodiment of the method is characterized in that the hydraulic machine is brought back into its initial state in terms of rotational speed when an expected connection of the secondary drive is not requested.
  • the hydraulic machine is at Presynchronization preferably brought from standstill, that is from a speed of zero, to a desired target speed. Consequently, if the expected engagement of the secondary drive is not requested, the hydraulic machine is again brought to a standstill.
  • a further preferred embodiment of the method is characterized in that during the presynchronization at least one of the following parameters is varied: a system pressure of the secondary drive; one
  • Hydraulic machine a torque of the hydraulic machine.
  • System pressure is, for example, a current hydraulic pressure of the secondary drive.
  • the accumulator pressure is, for example, a hydraulic pressure that prevails in a high-pressure accumulator of the secondary drive.
  • the hydraulic machine is preferably as
  • Axial piston machine designed with a pivoting cradle whose pivot angle is adjustable to change the displacement or displacement of the hydraulic machine.
  • an inertia of the secondary drive is advantageously taken into account.
  • the invention further relates to a hydraulic hybrid powertrain having a primary drive and a secondary drive including at least one hydraulic machine associated with a clutch and synchronizer that enables drive-off of the secondary drive to drive a motor vehicle equipped with the hybrid hydraulic drive train only with the vehicle drive the primary drive, the
  • Hydraulic hybrid powertrain is operated according to a method described above.
  • the hydraulic hybrid powertrain preferably includes a transmission disposed between the primary drive and the secondary drive.
  • the transmission is, for example, via a first shaft
  • the transmission is connected via a second shaft drivingly connected to the primary drive. Via a third shaft, the transmission is drivingly connected to the secondary drive.
  • the transmission is advantageously designed as a planetary gear or planetary gear or planetary gear.
  • the planetary gear includes, for example, a ring gear, a sun gear and Planetary wheels, which are also referred to as planetary gears.
  • the planet gears or planetary gears are rotatably mounted, for example, on a planet carrier.
  • the planet carrier is, for example, with the interposition of a
  • Gear stage drivingly connected to the first shaft, which,
  • a preferred embodiment of the hydraulic hybrid powertrain is characterized in that the secondary drive comprises two hydraulic machines, wherein the pre-synchronized hydraulic machine is arranged on an output side.
  • the pre-synchronized hydraulic machine is preferably operated as a hydraulic motor.
  • the invention further relates to a computer program product with a computer program, the software means for performing the advance
  • the method according to the invention is preferably carried out in a control unit of a motor vehicle. Therefore, the concerns
  • a hydraulic hybrid power train 1 is a
  • the driven wheel 2 is, for example, via a differential 3 drivingly to the Hydraulic hybrid powertrain 1 connected.
  • the hybrid hydraulic powertrain 1 includes a primary drive 4 that includes, for example, an internal combustion engine 6, also referred to as an internal combustion engine.
  • the wheel 2 can be driven solely by the primary drive 4.
  • the hydraulic hybrid powertrain 1 further comprises a secondary drive 10.
  • the secondary drive 10 comprises a first hydraulic machine 11 and a second hydraulic machine 12.
  • the two hydraulic machines 11 and 12 are hydraulically connected to a low-pressure side 13 on the input side.
  • the low pressure side 13 includes a low pressure accumulator 14 with
  • Hydraulic medium which is subjected to low pressure.
  • the high pressure side 16 includes a
  • High-pressure accumulator 17 with hydraulic medium which is subjected to high pressure Through a total of six rectangles 18 valve means are referred to, which allow the operation of the secondary drive 10 with the two hydraulic machines 1 1 and 12 in a known manner.
  • a transmission 20 is connected between the primary drive 4 and the secondary drive 10.
  • the gear 20 is designed as a planetary gear with a ring gear 30, a sun gear 32 and planetary gears 34.
  • the planet gears 34 are rotatably mounted on a planet carrier 35.
  • a first shaft 21 is rotatably connected via a gear stage with the planet carrier
  • the first shaft 21 is rotatably connected to the differential 3 at its right end in the figure via a further gear stage.
  • a second shaft 22 is rotatably connected to the ring gear 30 of the planetary gear 20.
  • the second shaft 22 is drivingly connected to the primary drive 4 connectable.
  • a third shaft 23 is rotatably connected to the sun gear 32 of the
  • a clutch and / or synchronizer 27 is driven on the output side between the second hydraulic machine 12 of the secondary Drive 10 and the differential 3 connected to the driven wheel 2.
  • additional gear stages between the clutch and / or synchronizer 27 and the differential 3 can be connected to represent additional functions, such as a reverse gear.
  • the hydraulic hybrid powertrain 1 is a power-split powertrain with mechanical hydraulic power.
  • the power of the hydraulic hybrid drive train 1 can be guided via the primary drive 4, which is also referred to as a mechanical drive, or via the secondary drive 10, which is also referred to as a hydraulic drive.
  • the power can also simultaneously via the two drives 4, 10
  • Operating states can occur in which individual system parts are inactive or have to be deactivated.
  • the second hydraulic machine 12 is uncoupled with the aid of the coupling and synchronizing device 27.
  • the uncoupled hydraulic machine 12 must be actively brought to a corresponding target speed before re-coupling.
  • the acceleration capacity of the hydraulic machine 12 is determined by its nominal size, the existing hydraulic pressure, a certain tilt angle curve, and the inertia of the hydraulic machine 12.
  • the uncoupled hydraulic machine 12 which is also referred to as a hydraulic unit, in a relevant
  • the speed delta to be overcome in the subsequent actual synchronization process can be reduced.
  • the actual synchronization process gets shorter as requested Target speed can be achieved faster. As a result, the shift can be accelerated overall.
  • the synchronization process is part of a switching process.
  • the unit to be synchronized is brought to a so-called pre-synchronization speed.
  • the pre-synchronization speed is, for example, half the target speed.
  • the unit 12 to be synchronized is maintained at the pre-synchronization speed.
  • the hydraulic unit 12 is advantageously returned to its original state. In the original state, the hydraulic unit 12 is located

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner une chaîne cinématique hybride hydraulique (1) comprenant une propulsion primaire (4) et une propulsion secondaire (10) équipée d'au moins une machine hydraulique (12) associée à un système d'embrayage et de synchronisation (27) qui permet de débrayer la propulsion secondaire (10) afin de propulser un véhicule automobile équipé de la chaîne cinématique hybride hydraulique (1) uniquement au moyen de la propulsion primaire (4). Pour améliorer le confort de conduite lors du fonctionnement d'une chaîne cinématique hybride hydraulique, la machine hydraulique (12) est présynchronisée dans une plage de vitesse pertinente dans laquelle la chaîne cinématique hybride hydraulique (1) est entraînée uniquement au moyen de la propulsion primaire (4) et dans laquelle un embrayage de la propulsion secondaire (10) est à prévoir. L'invention concerne un procédé pour faire fonctionner une chaîne cinématique hybride hydraulique (1) comprenant une propulsion primaire (4) et une propulsion secondaire (10) comprenant au moins une machine hydraulique (12) associée à un système d'embrayage et de synchronisation (27) qui permet de débrayer la propulsion secondaire (10) afin de propulser un véhicule automobile équipé de la chaîne cinématique hybride hydraulique (1) uniquement au moyen de la propulsion primaire (4). Pour améliorer le confort de conduite lors du fonctionnement d'une chaîne cinématique hybride hydraulique, la machine hydraulique (12) est présynchronisée dans une plage de vitesse pertinente dans laquelle la chaîne cinématique hybride hydraulique (1) est entraînée uniquement au moyen de la propulsion primaire (4) et dans laquelle un embrayage de la propulsion secondaire (10) est à prévoir.
PCT/EP2015/051237 2014-03-10 2015-01-22 Procédé pour faire fonctionner une chaîne cinématique hybride hydraulique Ceased WO2015135672A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014204357.3 2014-03-10
DE102014204357.3A DE102014204357A1 (de) 2014-03-10 2014-03-10 Verfahren zum Betreiben eines Hydraulikhybridantriebsstrangs

Publications (2)

Publication Number Publication Date
WO2015135672A2 true WO2015135672A2 (fr) 2015-09-17
WO2015135672A3 WO2015135672A3 (fr) 2015-11-26

Family

ID=52450068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/051237 Ceased WO2015135672A2 (fr) 2014-03-10 2015-01-22 Procédé pour faire fonctionner une chaîne cinématique hybride hydraulique

Country Status (2)

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DE (1) DE102014204357A1 (fr)
WO (1) WO2015135672A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282010B1 (fr) * 1987-03-09 1992-06-03 Hydromatik GmbH Dispositif d'entraînement consistant en un moteur à vitesse de rotation changeante, une transmission hydrostatique variable et un mécanisme de changement de vitesses
DE102006036846A1 (de) * 2006-08-07 2008-02-14 Robert Bosch Gmbh Antrieb mit einem Schaltgetriebe
DE102008047993B3 (de) * 2008-09-18 2010-04-08 Voith Patent Gmbh Verfahren zum Betreiben eines Antriebsstrangs
DE102009053031A1 (de) * 2009-11-12 2011-05-19 Linde Material Handling Gmbh Hydrostatisches Getriebe
DE102011002967A1 (de) 2011-01-21 2012-07-26 Robert Bosch Gmbh Hybridantrieb für ein Kraftfahrzeug
DE102011055178B4 (de) * 2011-11-09 2021-03-04 Linde Hydraulics Gmbh & Co. Kg Hydrostatischer Fahrantrieb einer allradgetriebenen Arbeitsmaschine

Also Published As

Publication number Publication date
DE102014204357A1 (de) 2015-09-10
WO2015135672A3 (fr) 2015-11-26

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