DE4327881C1 - Clutch control for hybrid transmission vehicle - Google Patents

Clutch control for hybrid transmission vehicle

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Publication number
DE4327881C1
DE4327881C1 DE4327881A DE4327881A DE4327881C1 DE 4327881 C1 DE4327881 C1 DE 4327881C1 DE 4327881 A DE4327881 A DE 4327881A DE 4327881 A DE4327881 A DE 4327881A DE 4327881 C1 DE4327881 C1 DE 4327881C1
Authority
DE
Germany
Prior art keywords
clutch
hybrid drive
drive according
hydraulic
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE4327881A
Other languages
German (de)
Inventor
Wolf Dr Ing Boll
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.)
Mercedes Benz Group AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
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Filing date
Publication date
Application filed by Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Priority to DE4327881A priority Critical patent/DE4327881C1/en
Application granted granted Critical
Publication of DE4327881C1 publication Critical patent/DE4327881C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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 ; 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
    • B60K6/20—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 ; 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
    • B60K6/42—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 ; 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
    • B60K6/48—Parallel type
    • 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
    • B60W20/30—Control strategies involving selection of transmission gear ratio
    • 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
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/02—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for main transmission clutches
    • 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 ; 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
    • B60K6/20—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 ; 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
    • B60K6/22—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 ; 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 apparatus, components or means specially adapted for HEVs
    • B60K6/38—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 ; 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 apparatus, components or means specially adapted for HEVs characterised by the 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
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/04—Control by fluid pressure providing power assistance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/066—Control of fluid pressure, e.g. using an 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • 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
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/14—Clutch pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/102—Actuator
    • F16D2500/1026—Hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10406—Clutch position
    • F16D2500/10412—Transmission line of a vehicle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/106—Engine
    • F16D2500/1066—Hybrid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/31413—Clutch pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/3144—Accelerator pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/508—Relating driving conditions
    • F16D2500/50858—Selecting a Mode of operation
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The vehicle is normally driven by an engine (2) and a gearbox (5). An electric motor (1) between the clutch (3) and the gearbox provides additional torque or drives the vehicle with the engine switched off and the clutch disengaged. To simplify the driving technique the clutch is still operated during electric drive, with the clutch pedal travel, and the throttle setting, controlling the torque.The clutch pedal operates a hydraulic system. In the electric drive mode a valve (22,23) switches the hydraulic force to a spring loaded reservoir (19) to simulate clutch action while the travel of the clutch pedal is monitored (29).

Description

Die Erfindung bezieht sich auf einen Hybridantrieb für ein Kraftfahrzeug gemäß den im Oberbegriff des Patentanspruchs 1 genannten MerkmalenThe invention relates to a hybrid drive for a Motor vehicle according to the preamble of claim 1 mentioned features

Ein derartiger Hybridantrieb ist aus der DE 33 35 923 A1 be­ kannt. Bei diesem bekannten Hybridantrieb sind Brennkraftma­ schine, Elektromaschine und Getriebe in Reihe geschaltet, wobei zwischen den ersteren eine reine Trennkupplung und zwischen den letzteren eine Schalt- und Anfahrkupplung angeordnet sind. Die Trennkupplung ist bei reinem Elektrobetrieb über eine automa­ tische Betätigung dauernd geöffnet, die Schalt- und Anfahr­ kupplung wird bei Schaltvorgängen im Getriebe und beim Anfahren des Kraftfahrzeuges automatisch betätigt.Such a hybrid drive is from DE 33 35 923 A1 knows. In this known hybrid drive are internal combustion engines machine, electric machine and transmission connected in series, whereby a pure separating clutch between the former and between the the latter a switching and starting clutch are arranged. The The disconnect clutch is for automatic electrical operation via an automa table actuation permanently open, the switching and starting clutch is used during gear changes and when starting of the motor vehicle automatically operated.

Aus der JP 1-36 522 A2 ist weiterhin ein Kraftfahrzeug mit ei­ nem automatischen Getriebe bekannt, bei dem ein Pedal als Kupplungspedal-Attrappe an einer Stelle angeordnet ist, an dem bei einem Kraftfahrzeug mit Handschaltgetriebe ein Kupplungs­ pedal angeordnet ist. Die Attrappe soll verhindern, daß ein Fahrzeugführer, der den Umgang mit einem automatischen Getriebe nicht gewohnt ist, die übrigen Pedale falsch betätigt.From JP 1-36 522 A2 is a motor vehicle with egg Nem known automatic transmission, in which a pedal as Clutch pedal dummy is arranged at a point where a clutch in a motor vehicle with a manual transmission pedal is arranged. The dummy is intended to prevent a Driver who is handling an automatic transmission is not used, the other pedals operated incorrectly.

Der Erfindung liegt die Aufgabe zugrunde, den bekannten Hy­ bridantrieb so auszugestalten, daß die vom Fahrzeugführer bei einem Gangwechsel vorzunehmende Betätigung des Kupplungshebels unabhängig ist von der augenblicklichen Betriebsart des Hy­ bridantriebs.The invention has for its object the known Hy to design the bridrive so that by the driver a gear change actuation of the clutch lever  is independent of the current operating mode of the Hy brid drive.

Diese Aufgabe ist erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the Features of claim 1 solved.

Bei dem erfindungsgemäß ausgebildeten Hybridantrieb kann der Fahrzeugführer, der bei Fahrzeugantrieb durch die Brennkraft­ maschine zum Anfahren und Gangwechsel die Trennkupplung über den Kupplungshebel betätigen muß, den Kupplungshebel in der­ selben Form betätigen, wenn dies im Elektrobetrieb nicht er­ forderlich ist, wenn also bei Nichtbetrieb der Brennkraftma­ schine diese über die ständig geöffnete Trennkupplung von der Eingangswelle des Getriebes abgekoppelt ist. Der Fahrzeugführer braucht sich also in seiner Motorik nicht auf unterschiedliche Betätigungsarten einzustellen, was eine erhebliche Bedienungs­ erleichterung darstellt und die Gefahr von Fehlbedienungen, wie den Versuch eines Gangwechsels bei nicht abgekoppelter Brenn­ kraftmaschine, entscheidend vermindert.In the hybrid drive designed according to the invention, the Vehicle driver who is driven by the internal combustion engine machine for starting and changing gears via the separating clutch must actuate the clutch lever, the clutch lever in the Actuate the same form if it is not in electrical mode is required if the internal combustion engine is not in operation shine this over the continuously open disconnect clutch from the Input shaft of the gearbox is disconnected. The driver does not need different motor skills Setting types of actuation, which is a considerable operating represents relief and the risk of incorrect operation, such as attempting a gear change with the burner not uncoupled engine, significantly reduced.

Im Patentanspruch 2 ist für eine hydraulische Übertragungsvor­ richtung zwischen dem Kupplungshebel und der Trennkupplung eine auf diese abgestimmte einfache Ausbildung des Ersatzspeichers und dessen Anschluß angegeben.In claim 2 is for a hydraulic transmission direction between the clutch lever and the separating clutch to match this simple design of the replacement storage and its connection specified.

Die Ausbildung des Hybridantriebs gemäß dem Patentanspruch 3 sichert die Rückstellung des Kupplungshebels auch dann, wenn bei Nichtbetrieb der Brennkraftmaschine die Einrückfeder der Kupplung nicht auf den Kupplungshebel wirksam ist.The formation of the hybrid drive according to claim 3 ensures the return of the clutch lever even if when the internal combustion engine is not operating, the engagement spring of the Clutch is not effective on the clutch lever.

Im Patentanspruch 4 ist eine vorteilhafte Ausbildung der Um­ schaltvorrichtung angegeben. In claim 4 is an advantageous embodiment of the order switching device specified.  

Die Ausbildung des Hybridantriebs gemäß dem Patentanspruch 5 ermöglicht auf einfache Weise eine Entleerung des Federspei­ chers auch dann, wenn dieser nach einer Betriebsartenumschaltung bereits durch die Umschaltvorrichtung vom Geberzylinder getrennt ist.The design of the hybrid drive according to claim 5 enables the spring spit to be emptied in a simple manner chers even if this after a Operating mode changeover already through the changeover device is separated from the master cylinder.

Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.In the following the invention based on one in the drawing illustrated embodiment explained in more detail.

Bei einem in der einzigen Fig. dargestellten Hybridantrieb für ein nicht weiter dargestelltes Kraftfahrzeug wirken eine Elek­ tromaschine 1 unmittelbar und eine Brennkraftmaschine 2 über eine Trennkupplung 3 auf eine Eingangswelle 4 eines Gang­ schaltgetriebes 5, von dem aus in nicht dargestellter Weise der Antrieb der Fahrzeugräder erfolgt. Bei Brennkraftmaschinen- und Mischbetrieb des Hybridantriebs ist die Brennkraftmaschine 2 über die eingerückte Trennkupplung 3 mit der Eingangswelle 4 verbunden, während sie bei reinem Elektrobetrieb, also bei Nichtbetrieb der Brennkraftmaschine 2, durch die ständig aus­ gerückte Trennkupplung 3 von der Eingangswelle 4 getrennt ist. Die Trennkupplung 3 ist als Schalt- und Anfahrkupplung ausge­ bildet, um auch bei Brennkraftmaschinen - oder Mischbetrieb des Hybridantriebs während eines vom Fahrzeugführer vorgenommenen Gangschaltvorgangs im Getriebe 5 oder während des Anfahrens und Anhaltens des Kraftfahrzeuges die Brennkraftmaschine 2 von der Eingangswelle 4 trennen zu können.In a hybrid drive shown in the single FIG. For a motor vehicle (not shown further), an electric machine 1 acts directly and an internal combustion engine 2 via a clutch 3 on an input shaft 4 of a gearbox 5 , from which the vehicle wheels are driven in a manner not shown . In internal combustion engine and mixed operation of the hybrid drive, the internal combustion engine 2 is connected to the input shaft 4 via the engaged clutch 3 , while in pure electrical operation, that is to say when the internal combustion engine 2 is not in operation , it is separated from the input shaft 4 by the continuously disconnected clutch 3 . The separating clutch 3 is formed as a switching and starting clutch to be able to separate the internal combustion engine 2 from the input shaft 4 even in internal combustion engines - or mixed operation of the hybrid drive during a gearshift operation carried out by the driver in the transmission 5 or during the starting and stopping of the motor vehicle.

Die Betätigung der Trennkupplung 3 erfolgt über eine Betäti­ gungsvorrichtung. Diese umfaßt einen als Pedal ausgebildeten, vom Fahrzeugführer zu betätigenden Kupplungshebel 6, der über ein Gestänge 7 auf einen in einem Geberzylinder 8 längsbeweg­ lichen Geberkolben 9 wirkt. Der Geberzylinder 8 ist über eine Hydraulikleitung 10 hydraulisch mit einem Nehmerzylinder 11 verbunden, in dem ein über ein Gestänge 12 mit der Kupplung 3 verbundener Nehmerkolben 13 längsbeweglich gelagert ist. Mit dem Geberzylinder 8 ist ein ständig druckbeaufschlagter Vor­ ratsbehälter 14 über eine Leitung 15 mit einer Schnüffelbohrung 16 verbunden.The actuation of the disconnect clutch 3 takes place via an actuation device. This comprises a formed as a pedal by the vehicle driver to be actuated clutch lever 6, which acts via a linkage 7 to a längsbeweg in a master cylinder 8 handy master piston. 9 The master cylinder 8 is hydraulically connected via a hydraulic line 10 to a slave cylinder 11 , in which a slave piston 13 connected to the clutch 3 via a linkage 12 is mounted so as to be longitudinally movable. With the master cylinder 8 , a constantly pressurized storage container 14 is connected via a line 15 with a sniffer bore 16 .

Von der Hydraulikleitung 10 zweigt eine hydraulische Verbin­ dungsleitung 17 ab, die in einem Speicherraum 18 eines als Fe­ derspeicher 19 ausgebildeten Ersatzspeichers endet. Der größenveränderliche Speicherraum 18 wird von einer durch eine Feder 20 belasteten Membran 21 begrenzt. Die Feder 20 ist so ausgelegt, daß sie den Kupplungshebel 6 gegen eine dessen Aus­ rückbewegung unterstützende Federkraft zurückstellen kann. Der Speicherraum 18 ist mit dem Vorratsbehälter 14 über eine Lade­ leitung 30 verbunden, in der eine zum Speicherraum 18 hin för­ dernde Pumpe 31 und ein zu diesem hin öffnenden Rückschlagven­ til 32 angeordnet sind. Dadurch kann im Speicherraum 18 ein gleichmäßig hoher Druck gehalten werden, solange nicht, wie unten beschrieben, bei reinem Elektrobetrieb, eine hydraulische Verbindung zwischen Speicherraum 18 und Geberzylinder 8 herge­ stellt ist.From the hydraulic line 10 , a hydraulic connec tion line 17 branches off, which ends in a storage space 18 of a Fe derspeicher 19 formed as a spare memory. The resizable storage space 18 is delimited by a membrane 21 loaded by a spring 20 . The spring 20 is designed so that it can reset the clutch lever 6 against a spring force from its return movement. The storage space 18 is connected to the reservoir 14 via a charging line 30 is connected, in which a storage space for 18 toward för-promoting pump 31 and are arranged for this opening towards Rückschlagven til 32nd As a result, a uniformly high pressure can be maintained in the storage space 18 as long as, as described below, in pure electrical operation, a hydraulic connection between the storage space 18 and the master cylinder 8 is provided.

In der Hydraulikleitung 10 zwischen der Abzweigung der Verbin­ dungsleitung 17 und dem Nehmerzylinder 11 und in der Verbin­ dungsleitung 17 ist jeweils ein Absperrventil 22, 23 angeordnet, die zu einem einzigen Zweiwegeventil miteinander verbunden sein können. Die Absperrventile 22, 23 sind über Magnete 24, 25, Nocken o. dgl. verstellbar.In the hydraulic line 10 between the branch of the connec tion line 17 and the slave cylinder 11 and in the connec tion line 17 , a shut-off valve 22 , 23 is arranged, which can be connected to a single two-way valve. The shut-off valves 22 , 23 are adjustable via magnets 24 , 25 , cams or the like.

Bei Brennkraftmaschinen- und Mischbetrieb ist das Absperrventil 22 in der Hydraulikleitung 10 geöffnet, so daß durch Betätigung des Kupplungshebels 6 die Kupplung 3 ein- und ausgerückt wird. Soll nun auf reinen Elektrobetrieb durch die Elektromaschine 1 umgestellt, also die Brennkraftmaschine 2 stillgelegt werden, so wird bei durchgetretenem Kupplungshebel 6 und damit vollständig ausgerückter Kupplung 3 die Hydraulikleitung 10 durch eine Schließbewegung des Sperrventils 22 verschlossen und so die Kupplung 3 in der ausgerückten Stellung festgehalten. Eine vollständige Bewegung des Kupplungshebels 6 wird dabei durch eine Überwachungseinrichtung in Form von Endlagenschal­ tern 26, 27 am Kupplungshebel 6 überwacht. Das Sperrventil 22 sollte vollständig dicht sein, um ein schleichendes Einrücken der Kupplung 3 durch Leckverluste der Hydraulikflüssigkeit zu vermeiden. Sollten Leckverluste bzw. Flüssigkeitsumverlage­ rungen beim Schalten der Ventile 22, 23 unvermeidbar sein, kann die Pumpe 31 dafür sorgen, daß der Speicherraum 18 im ge­ spannten Zustand immer sein Nennvolumen enthält. Ein schlei­ chendes Einrücken der Kupplung 3 im Elektrobetrieb kann auch durch eine mechanische Verriegelung des Nehmerkolbens 11 oder durch eine Wegüberwachungseinrichtung wie einen Endschalter 28 am Gestänge 12 verhindert bzw. angezeigt werden.In internal combustion engine and mixed operation, the shut-off valve 22 in the hydraulic line 10 is opened, so that the clutch 3 is engaged and disengaged by actuating the clutch lever 6 . If the electric machine 1 is now to switch to purely electrical operation, that is to say the internal combustion engine 2 is to be shut down, the hydraulic line 10 is closed by a closing movement of the shut-off valve 22 when the clutch lever 6 is depressed and the clutch 3 is thus fully disengaged, thus holding the clutch 3 in the disengaged position . A complete movement of the clutch lever 6 is in this case tern by a monitoring device in the form of Endlagenschal 26, monitors 27 on the clutch lever. 6 The check valve 22 should be completely tight in order to avoid a gradual engagement of the clutch 3 due to leakage losses in the hydraulic fluid. Should leakage losses or liquid relocations be unavoidable when switching the valves 22 , 23 , the pump 31 can ensure that the storage space 18 always contains its nominal volume in the tensioned state. A creeping engagement of the clutch 3 in electrical operation can also be prevented or indicated by a mechanical locking of the slave piston 11 or by a path monitoring device such as a limit switch 28 on the linkage 12 .

Gleichzeitig mit oder unmittelbar nach der Schließbewegung des Sperrventils 22 wird das zweite Sperrventil 23 geöffnet und damit die hydraulische Verbindung zwischen dem Geberzylinder 8 und dem bereits sein Nennvolumen aufweisenden Speicherraum 18 des Federspeichers 19 hergestellt. Ohne die Kupplung 3 zu be­ tätigen, führt der Fahrzeugführer bei einer Betätigung des Kupplungshebels 6 die gleiche Bewegung mit ähnlicher Kraftent­ faltung gegen die Kraft der Feder 20 aus wie bei einer Betäti­ gung der Kupplung 3. Um für den Fahrzeugführer die bedienungstechnische Analogie zum Brennkraftmaschinenbetrieb zu simulieren, wird das Drehmoment der Elektromaschine 1 in Ab­ hängigkeit sowohl zum Weg eines Fahrpedals wie auch zum Rückweg des Kupplungshebels 6 gebildet, wobei dieser Rückweg durch ei­ nen mit dem Kupplungshebel 6 verbundenen Wegaufnehmer 29 fest­ gestellt wird, so daß insbesondere bei teilweise getretenem Fahrpedal feinfühlig angefahren werden kann. Simultaneously with or immediately after the closing movement of the blocking valve 22 , the second blocking valve 23 is opened and the hydraulic connection between the master cylinder 8 and the storage space 18 of the spring accumulator 19 already having its nominal volume is thus established. Without the clutch 3 to be active, the driver of the spring 20 results in an operation of the clutch lever 6, the same movement with similar Kraftent folding against the force as in a Actuate the supply of the clutch. 3 In order to simulate the operational analogy for internal combustion engine operation for the vehicle driver, the torque of the electric machine 1 is formed as a function of both the travel of an accelerator pedal and the return travel of the clutch lever 6 , this return travel being determined by a displacement sensor 29 connected to the clutch lever 6 is, so that can be started with sensitivity, especially when the accelerator pedal is partially depressed.

Beim Umschalten von Elektrobetrieb auf Brennkraftmaschinen- oder Mischbetrieb werden die beiden Sperrventile 22,23 wieder umgeschaltet, so daß der Geberzylinder 8 wieder mit der Kupp­ lung 3 in Verbindung steht, während die Verbindung zum Feder­ speicher 19 gesperrt ist.When switching from electrical operation to internal combustion engine or mixed operation, the two shut-off valves 22, 23 are switched over again, so that the master cylinder 8 is again connected to the coupling 3 , while the connection to the spring memory 19 is blocked.

Claims (9)

1. Hybridantrieb für ein Kraftfahrzeug mit einem Schaltge­ triebe mit einer Getriebeeingangswelle, mit der eine Elektro­ maschine und eine Brennkraftmaschine in Verbindung stehen, wo­ bei zwischen der Brennkraftmaschine und der Getriebeeingangs­ welle eine Trennkupplung angeordnet ist, die bei Nichtbetrieb der Brennkraftmaschine ständig ausgerückt ist und die Verbin­ dung der-Brennkraftmaschine mit der Getriebeeingangswelle und der Elektromaschine trennt, dadurch gekennzeichnet, daß die als Schalt- und Anfahrkupplung ausgebildete Trennkupp­ lung (3) vom Fahrzeugführer willkürlich mittels Kupplungshebel (6), insbesondere Kupplungspedal, betätigbar ist und daß eine Umschaltvorrichtung vorgesehen ist, die bei Nichtbetrieb der Brennkraftmaschine (2) die durch Betätigung des Kupplungshebels (6) aufgebrachte Kraft auf einen Ersatzspeicher leitet.1.Hybrid drive for a motor vehicle with a Schaltge gearbox with a transmission input shaft with which an electric machine and an internal combustion engine are connected, where a separating clutch is arranged between the internal combustion engine and the transmission input shaft, which is disengaged when the internal combustion engine is not in operation and which Connection of the internal combustion engine to the transmission input shaft and the electric machine separates, characterized in that the separating clutch ( 3 ) designed as a switching and starting clutch can be actuated arbitrarily by the driver by means of a clutch lever ( 6 ), in particular a clutch pedal, and in that a switching device is provided, which, when the internal combustion engine ( 2 ) is not in operation, directs the force applied by actuating the clutch lever ( 6 ) to a spare memory. 2. Hybridantrieb nach Anspruch 1, dadurch gekennzeichnet, daß die Kupplungshebelkraft über einen hydraulischen Geberzy­ linder (8) und eine Hydraulikleitung (10) auf einen hydrau­ lischen Nehmerzylinder (11) wirkt, an dem die Trennkupplung (3) angeschlossen ist, und daß an die Hydraulikleitung (10) über eine hydraulische Verbindungsleitung (17) der als hydraulischer Federspeicher (19) ausgebildete Ersatzspeicher angeschlossen ist. 2. Hybrid drive according to claim 1, characterized in that the clutch lever force via a hydraulic Geberzy cylinder ( 8 ) and a hydraulic line ( 10 ) acts on a hydraulic clutch cylinder ( 11 ) to which the clutch ( 3 ) is connected, and that the hydraulic line ( 10 ) is connected via a hydraulic connecting line ( 17 ) which is designed as a hydraulic spring accumulator ( 19 ). 3. Hybridantrieb nach Anspruch 2, dadurch gekennzeichnet, daß die Rückstellkraft des geladenen Federspeichers (19) min­ destens gleich groß ist wie eine die Ausrückbetätigung des Kupplungshebels (6) unterstützende Federkraft.3. Hybrid drive according to claim 2, characterized in that the restoring force of the loaded spring accumulator ( 19 ) min is at least the same size as the release actuation of the clutch lever ( 6 ) supporting spring force. 4. Hybridantrieb nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß in der Hydraulikleitung (10) und der Verbindungsleitung (17) ein Zweiwegeventil angeordnet ist, das den Geberzylinder (8) alternativ mit dem Nehmerzylinder (11) und dem Federspei­ cher (19) verbindet.4. Hybrid drive according to claim 2 or 3, characterized in that in the hydraulic line ( 10 ) and the connecting line ( 17 ) a two-way valve is arranged, the master cylinder ( 8 ) alternatively with the slave cylinder ( 11 ) and the Federspei cher ( 19 ) connects. 5. Hybridantrieb nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Drehmoment der Elektromaschine (1) in Abhängigkeit so­ wohl vom Weg eines Fahrpedals wie auch vom Rückweg des Kupp­ lungshebels (6) gebildet wird, der durch einen mit diesem ver­ bundenen Wegaufnehmer (29) festgestellt wird.5. Hybrid drive according to one of claims 1 to 4, characterized in that the torque of the electric machine ( 1 ) as a function of the path of an accelerator pedal as well as the return path of the clutch lever ( 6 ) is formed by a related to this ver Position sensor ( 29 ) is determined. 6. Hybridantrieb nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß eine Überwachungseinrichtung über Endschalter (26, 27) am Kupplungshebel (6) einen vollen Kupplungshub vor einem Um­ schalten der Betriebsarten kontrolliert.6. Hybrid drive according to one of claims 1 to 5, characterized in that a monitoring device via limit switches ( 26 , 27 ) on the clutch lever ( 6 ) controls a full clutch stroke before switching over to the operating modes. 7. Hybridantrieb nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß der Geberkolben (13) mechanisch verriegelbar ist.7. Hybrid drive according to one of claims 2 to 6, characterized in that the master piston ( 13 ) is mechanically lockable. 8. Hybridantrieb nach einem der Ansprüche 2 bis 6, gekennzeichnet durch eine Wegüberwachungs­ einrichtung (Endschalter 28) am Geberkolben (13) oder am Gestänge (12).8. Hybrid drive according to one of claims 2 to 6, characterized by a path monitoring device (limit switch 28 ) on the master piston ( 13 ) or on the linkage ( 12 ). 9. Hybridantrieb nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß in einer Ladeleitung (30) zwischen Vorratsbehälter (14) und Speicherraum (18) eine Pumpe (31) angeordnet ist, die in ge­ spanntem Zustand des Speicherraumes (18) dessen Nennvolumen aufrechterhält.9. Hybrid drive according to one of claims 2 to 8, characterized in that in a charging line ( 30 ) between the storage container ( 14 ) and storage space ( 18 ) a pump ( 31 ) is arranged, the ge in the tensioned state of the storage space ( 18 ) Maintained nominal volume.
DE4327881A 1993-08-19 1993-08-19 Clutch control for hybrid transmission vehicle Expired - Fee Related DE4327881C1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4446487C1 (en) * 1994-12-23 1996-03-07 Daimler Benz Ag Switching device for changing over vehicle hybrid drive between electric drive and IC engine
EP0798480A2 (en) * 1996-03-31 1997-10-01 Isuzu Motors Limited Automatic clutch unit for vehicle use
WO2004053348A2 (en) * 2002-12-06 2004-06-24 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Hydraulic system for actuating a clutch
CN1302943C (en) * 2005-03-22 2007-03-07 方茂奎 Spring boosting method for motor vehicle clutch operation and electric actuator
DE102005048950B3 (en) * 2005-10-13 2007-05-03 Zf Friedrichshafen Ag Control valve for clutch actuating device of motor vehicle, has valve body moved to one switching position by valve rod that is centered in initial position, where spring and magnetic forces indirectly act on rod that is pre-stressed
DE19934936B4 (en) * 1998-07-28 2011-06-22 Schaeffler Technologies GmbH & Co. KG, 91074 powertrain
EP2919090A2 (en) 2014-03-14 2015-09-16 Schaeffler Technologies GmbH & Co. KG Pedal force creation device
DE102015204232A1 (en) 2014-03-14 2015-09-17 Schaeffler Technologies AG & Co. KG Pedal power generation device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335923A1 (en) * 1983-03-07 1984-09-13 Volkswagenwerk Ag Hybrid drive arrangement
JPS6436522A (en) * 1987-07-31 1989-02-07 Minoru Ihara Safety device for automatic transmission vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335923A1 (en) * 1983-03-07 1984-09-13 Volkswagenwerk Ag Hybrid drive arrangement
JPS6436522A (en) * 1987-07-31 1989-02-07 Minoru Ihara Safety device for automatic transmission vehicle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4446487C1 (en) * 1994-12-23 1996-03-07 Daimler Benz Ag Switching device for changing over vehicle hybrid drive between electric drive and IC engine
EP0798480A2 (en) * 1996-03-31 1997-10-01 Isuzu Motors Limited Automatic clutch unit for vehicle use
EP0798480A3 (en) * 1996-03-31 1998-04-22 Isuzu Motors Limited Automatic clutch unit for vehicle use
DE19934936B4 (en) * 1998-07-28 2011-06-22 Schaeffler Technologies GmbH & Co. KG, 91074 powertrain
WO2004053348A2 (en) * 2002-12-06 2004-06-24 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Hydraulic system for actuating a clutch
WO2004053348A3 (en) * 2002-12-06 2005-01-06 Luk Lamellen & Kupplungsbau Hydraulic system for actuating a clutch
CN1302943C (en) * 2005-03-22 2007-03-07 方茂奎 Spring boosting method for motor vehicle clutch operation and electric actuator
DE102005048950B3 (en) * 2005-10-13 2007-05-03 Zf Friedrichshafen Ag Control valve for clutch actuating device of motor vehicle, has valve body moved to one switching position by valve rod that is centered in initial position, where spring and magnetic forces indirectly act on rod that is pre-stressed
EP2919090A2 (en) 2014-03-14 2015-09-16 Schaeffler Technologies GmbH & Co. KG Pedal force creation device
DE102015204232A1 (en) 2014-03-14 2015-09-17 Schaeffler Technologies AG & Co. KG Pedal power generation device
DE102015202875A1 (en) 2014-03-14 2015-09-17 Schaeffler Technologies AG & Co. KG Pedal power generation device
EP2927064A2 (en) 2014-03-14 2015-10-07 Schaeffler Technologies GmbH & Co. KG Pedal force creation device

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