WO2021008757A1 - Ensemble poulies à courroie - Google Patents

Ensemble poulies à courroie Download PDF

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Publication number
WO2021008757A1
WO2021008757A1 PCT/EP2020/063968 EP2020063968W WO2021008757A1 WO 2021008757 A1 WO2021008757 A1 WO 2021008757A1 EP 2020063968 W EP2020063968 W EP 2020063968W WO 2021008757 A1 WO2021008757 A1 WO 2021008757A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
generator
belt pulley
internal combustion
combustion engine
Prior art date
Application number
PCT/EP2020/063968
Other languages
German (de)
English (en)
Inventor
Alfred Rehr
Christian Glück
Original Assignee
Audi 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
Application filed by Audi Ag filed Critical Audi Ag
Publication of WO2021008757A1 publication Critical patent/WO2021008757A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • 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
    • B60K6/383—One-way clutches or freewheel devices
    • 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
    • B60K6/485—Motor-assist type
    • 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
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
    • F16D41/086—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action the intermediate members being of circular cross-section and wedging by rolling
    • F16D41/088—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action the intermediate members being of circular cross-section and wedging by rolling the intermediate members being of only one size and wedging by a movement not having an axial component, between inner and outer races, one of which is cylindrical
    • 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
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • 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
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • 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
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • B60K2025/022—Auxiliary drives directly from an engine shaft by a mechanical transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/20—Energy converters
    • B60Y2400/204—Generator sets, engine and generator as one unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/42—Clutches or brakes
    • B60Y2400/427—One-way clutches
    • 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 belt pulley arrangement for an internal combustion engine auxiliary unit, in particular a mechanical air conditioning compressor, according to the preamble of claim 1.
  • a generic pulley arrangement has a pulley bengenerator with a generator shaft on which a switchable pulley via a coupling device and a non-rotatable pulley are arranged.
  • the switchable pulley is connected to an internal combustion engine shaft via an internal combustion engine belt drive connectable.
  • the non-rotatable belt pulley can be connected to an aggregate shaft by means of an aggregate belt drive.
  • the pulley generator drives via its generator shaft and the internal combustion engine belt drive in a first driving direction of rotation on the internal combustion engine.
  • the internal combustion engine can be started, for example, or a boost operation can take place in which the running internal combustion engine is supported with an additional electromotive torque.
  • the internal combustion engine in a generator operating mode, can drive the engine shaft and the internal combustion engine belt output in the first drive direction of rotation on the pulley generator via its internal combustion engine.
  • the vehicle battery connected to the pulley generator can be charged and the air conditioning compressor can also be driven.
  • the pulley generator can also operate in a second Motorbe mode.
  • the belt pulley can bengenerator on its generator shaft and the unit belt drive drive on the auxiliary unit, namely when the internal combustion engine is shut down, that is, drive off the auxiliary unit independently of the engine.
  • a variable belt drive for auxiliary units is known.
  • DE 197 54 872 A1 a pulley for free-running clutches with two belts is known.
  • a belt pulley arrangement is known from DE 10 2013 108 839 A1.
  • the object of the invention is to provide a belt pulley arrangement for an internal combustion engine ancillary unit, in particular a mechanical air conditioning compressor, in which, compared to the prior art, the control effort and the space and construction requirements are reduced.
  • the coupling device for the switchable pulley has an overrunning clutch and a centrifugal clutch.
  • the overrunning clutch and the centrifugal clutch open or lock in the two engine modes and in the generator mode of the belt pulley generator automatically, that is, without the influence of, for example, electrical or hydraulic external energy.
  • the pulley generator can drive the auxiliary unit, in particular a mechanical air conditioning compressor, independently of the internal combustion engine.
  • the overrunning clutch In the first motor operating mode, the overrunning clutch can lock in a torque-transmitting manner and the centrifugal clutch can be transmission-free. In the generator mode, the overrunning clutch can be transmission-free and lock the centrifugal clutch in a torque-transmitting manner. In the second motor operating mode, both the overrunning clutch (K1) and the centrifugal clutch (K2) can be transmission-free.
  • the torque-transmitting locking function of the overrunning clutch can be activated in the first motor operating mode with a first drive direction of rotation of the generator shaft.
  • the belt pulley In the first engine operating mode, the belt pulley can be used to either start the engine or use a boost function running internal combustion engine.
  • the transmission-free freewheeling function of the freewheel clutch on the other hand, can be activated when the pulley generator is operating in a second driving direction opposite to the first driving direction.
  • the torque-transmitting locking function of the centrifugal clutch can be activated in the generator operating mode of the pulley generator.
  • their transmission-free freewheeling function can be activated when the pulley generator is operating in the opposite second drive direction.
  • the pulley generator can rotate in the second drive direction of rotation in the second motor operating mode (that is to say drive the auxiliary unit when the internal combustion engine shaft is shut down).
  • the freewheel functions are activated both in the freewheel clutch and in the centrifugal clutch, that is, both clutches are free of transmission.
  • the pulley generator can therefore drive the auxiliary unit even when the internal combustion engine is shut down.
  • the switchable belt pulley can be arranged on the generator shaft with the overrunning clutch being radially interposed.
  • the overrunning clutch can have an overrunning clutch outside and an overrunning clutch inside.
  • Adjustable clamping bodies are arranged between the overrunning clutch inside and the overrunning clutch outside. Depending on the direction of rotation of the inside and the outside, the clamping bodies can be adjusted to a clamping position or a release position due to a relative movement.
  • the centrifugal clutch can have at least one centrifugal force element that can be acted upon by centrifugal force.
  • the centrifugal force element can be displaced between a rest position and a locking position under the action of centrifugal force. In the locked position to which centrifugal force is applied, the centrifugal force element can engage be with a counter contour of the generator shaft. In contrast, the centrifugal force element can be out of engagement with the mating contour of the generator shaft in its rest position.
  • the non-rotatable belt pulley and the switchable belt pulley can be arranged axially directly adjacent to one another on the generator shaft.
  • the non-rotatable pulley provides a radially inner space.
  • the centrifugal force element of the centrifugal clutch can be positioned in the installation space of the rotationally fixed pulley.
  • the radially inner installation space of the non-rotatable belt pulley can be formed on the side of the non-rotatable belt pulley facing the switchable belt pulley.
  • this can be formed between a radially outer groove ring, a ra dial inner hub section and a connecting flange of the non-rotatable pulley.
  • the connecting flange connects the ra dial inner hub portion with the radially outer groove ring.
  • the centrifugal clutch can have a linear guide by means of which the centrifugal element can be linearly adjusted between its rest position and its locked position.
  • the switchable belt pulley can be axially extended in one piece with a support ring of the same material.
  • the support ring can be diametrically reduced compared to the switchable pulley and protrude nested in the assembly position in the installation space of the axially adjacent rotationally fixed pulley.
  • at least one radially oriented guide channel can be formed in which the centrifugal force element is guided in a radially adjustable manner.
  • the guide channel formed in the support ring of the switchable belt pulley can be axially open at the end face.
  • the axially open end face of the guide channel can be closed directly from the connecting flange of the non-rotatable belt pulley.
  • the pulley generator drives the auxiliary unit independently of the (shut down) internal combustion engine.
  • the generator shaft rotates together with the rotationally fixed pulley arranged on it.
  • the internal combustion engine belt drive together with the switchable pulley remains shut down, so that a relative rotary movement takes place between the switchable (shut down) pulley and the rotating, non-rotatable pulley and generator shaft.
  • the support ring of the switchable pulley can preferably be in sliding contact with the outer circumference of the hub section and with the connecting flange of the non-rotatable pulley or be slightly spaced therefrom.
  • the centrifugal force element is spring-preloaded into its radially inner rest position with a spring.
  • the centrifugal force element can be in its radially inner (spring-preloaded) rest position in contact with a radial stop formed on the switchable belt pulley.
  • the centrifugal element in its radially inner rest position can be out of sliding contact with the hub portion of the non-rotatable pulley.
  • a radial free space can be provided between the support ring of the switchable pulley and the inner circumference of the ring of grooves of the non-rotatable pulley.
  • the centrifugal force element can come into engagement with the counter contour formed on the inner circumference of the ring of grooves of the non-rotatable pulley, using up this radial free space.
  • the spring is arranged in the radial free space between the support ring of the switchable pulley and the inner circumference of the grooved ring of the non-rotatable pulley.
  • the radial free space can be continuously open all the way round (that is, without interruption).
  • the spring can preferably be an annular spring which is stretched on the outer circumference of the support ring of the switchable pulley and / or moves the support ring outer circumference without interruption.
  • a circumferential spring groove in which the annular spring is arranged can be formed on the outer circumference of the support ring of the switchable pulley. If the centrifugal force is very high, there is a risk that the ring spring will lift off radially outward from the outer circumference of the support ring.
  • a circumferential (radially inwardly open) spring groove can also be formed on the inner circumference of the grooved ring of the non-rotating belt pulley, in which the ring spring lifted from the inner circumference of the support ring can be retracted.
  • a general aspect of the invention is generally directed to a switchable belt pulley which is arranged on a drive shaft (i.e. in particular the generator shaft) and can be coupled to or decoupled from the drive shaft via a coupling device to transmit torque depending on different modes of operation of the pulley assembly.
  • a first operating mode in particular the above-mentioned first motor operating mode
  • the coupling device couples the drive shaft with the switchable pulley in such a way that when the drive shaft rotates in a first drive rotation direction, a load path L1 is formed from the drive shaft in the direction of the switchable pulley.
  • a second operating mode i.e.
  • the coupling device couples the drive shaft to the switchable pulley in such a way that when the drive shaft rotates in the first drive direction of rotation, an opposing load path L3 is formed from the switchable pulley into the drive shaft.
  • the coupling device decouples the drive shaft from the switchable pulley, so that when the drive shaft rotates in an opposite, second drive direction of rotation, a load path L5 without power splitting along the drive shaft is formed, and with greater force Relief or decoupling of the switchable pulley from the drive shaft.
  • 1 to 3 are each views of a block diagram indicated
  • FIGS. 4 to 7 show sectional views of the coupling device with deactivated centrifugal clutch (FIGS. 4 and 5) and with activated centrifugal clutch (FIGS. 6 and 7);
  • a pulley arrangement has a pulley generator RSG which is connected to a vehicle battery 14 via an electrical supply line.
  • the pulley generator RSG is drivingly connected to an internal combustion engine BKM of a vehicle and to a mechanical air-conditioning compressor mKK which forms the auxiliary unit.
  • a generator shaft 1 of the pulley generator RSG, an aggregate shaft 3 of the air conditioning compressor mKK and an internal combustion engine shaft 5 are arranged axially parallel to one another and are driveably connected to one another via an internal combustion engine belt drive RBKM and an aggregate belt drive RmKK.
  • the internal combustion engine belt drive RBKM has in FIG. 1 a rotationally fixed on the internal combustion engine.
  • the switchable pulley 9 can be coupled to the generator shaft 1 in a torque-transmitting manner or decoupled therefrom by means of a coupling device described later, depending on different operating modes MB1, MB2, GB.
  • the unit belt drive RmKK has a non-rotatable belt pulley 11 arranged on the generator shaft 1 and a belt pulley 13 on the unit side.
  • the clutch device is made up of an overrunning clutch K1 and a centrifugal clutch K2.
  • the operating modes MB1, GB, MB2 illustrated with reference to FIGS. 1 to 3 these can automatically couple or uncouple so that the switching operations can be carried out without external hydraulic or electrical actuators.
  • the operating modes MB1, GB, MB2 in which the pulley arrangement can be operated are described below with reference to FIGS. 1 to 3.
  • the pulley arrangement operates in the first motor mode MB1, in which the pulley generator RSG executes an engine start or a boost function.
  • a drive torque is generated in the pulley generator RSG.
  • the drive torque generated by the pulley generator RSG is in a load path L1 from the generator shaft 1 in the direction of the internal combustion engine belt drive RBKM and in a load path L2 from the generator shaft 1 in Direction on the aggregate belt drive RmKK is divided.
  • the generator shaft 1 of the pulley generator RSG drives with a first drive direction of rotation A1 (i.e. clockwise rotation) on the internal combustion engine shaft 5 and on the unit shaft 3, which also rotate in the first drive direction of rotation A1.
  • the pulley arrangement works in a generator mode GB, in which a drive torque generated by the internal combustion engine BKM is in a load path L3 from the internal combustion engine shaft 5 is transmitted via the internal combustion engine belt drive RBKM to the generator shaft 1 and further to the pulley generator RSG.
  • a load path L4 branches off from the load path L3, which is led from the generator shaft 1 via the unit belt drive RmKK to the air-conditioning compressor mKK.
  • the engine shaft 5 of the pulley generator RSG drives with the first drive direction A1 (that is, clockwise rotation) on the generator shaft 1 and the unit shaft 3, which also rotate in the first drive direction A1.
  • the vehicle battery 14 connected to the belt pulley generator RSG is charged and, at the same time, the air conditioning compressor mKK is driven.
  • the pulley arrangement operates in a second motor mode MB2.
  • the second motor operating mode MB2 a drive torque generated by the pulley generator RSG is transmitted in a load path L5 without power split from the generator shaft 1 in the direction of the unit belt drive RmKK.
  • the switchable pulley 9 is switched load-free in the second motor mode MB2 of the clutch device.
  • the belt pulley generator RSG drives the unit belt drive RmKK with the opposite second drive direction of rotation A2 (that is, left rotation).
  • the second motor operating mode MB2 takes place when the internal combustion engine BKM is shut down.
  • the air conditioning compressor mKK can be supplied with drive power from the belt pulley generator RSG, independently of the internal combustion engine BKM.
  • the torque-transmitting locking function is activated in the freewheeling clutch K1 in the first motor operating mode MB1.
  • the load path L1 (FIG. 1) runs from the pulley generator RSG via the locked overrunning clutch K1 and, in the first drive direction of rotation A1, to the internal combustion engine BKM.
  • the transfer-free freewheeling function of the freewheeling clutch K1 is activated in the second motor operating mode MB2 (FIG. 3), that is to say at an operation of the pulley generator RSG in the opposite direction to the first drive direction of rotation A1 on the second drive direction of rotation A2.
  • the torque-transmitting locking function is activated in the generator operating mode GB (FIG. 2).
  • the load path L2 ( Figure 2) runs from the internal combustion engine BKM via the internal combustion engine belt drive RBKM and via the locked centrifugal clutch K2 to the pulley generator RSG, while the freewheeling function is activated in the freewheel clutch K1.
  • the transmission-free freewheeling function of the centrifugal clutch K2 is activated in the second motor mode MB2 ( Figure 3), that is, when operating the pulley generator RSG in the opposite second drive direction of rotation A2 ( Figure 3).
  • the load path L5 results, in which the pulley generator RSG rotates in the second drive direction of rotation A2, so that the freewheel function is activated in both the freewheel clutch K1 and the centrifugal clutch K1.
  • the pulley generator RSG can drive the mechanical air conditioning compressor mKK independently of the internal combustion engine BKM.
  • FIGS. 4 and 5 A specific structure of the switchable pulley 9 and the non-rotatable belt pulley 11 with the two freewheel and centrifugal clutches K1 and K2 are described below with reference to FIGS the generator shaft 1 arranged.
  • a base body 12 of the switchable pulley 9 is arranged on the generator shaft 1 under radial inter mediate position of the overrunning clutch K2.
  • the centrifugal clutch K2 has a total of three centrifugal force elements 15 which can be subjected to centrifugal force and which are arranged between one shown in FIGS. 4 and 5 and are distributed uniformly around the circumference. th rest position and a locking position shown in Figs. 6 and 7 are adjustable.
  • the base body 12 of the switchable pulley 9 is extended in FIG. 4 with a support ring 17 of reduced diameter, made of the same material and in one piece.
  • the support ring 17 of the switchable belt pulley 9 protrudes into an installation space 19 of the rotationally fixed belt pulley 11.
  • the installation space 19 is arranged between a radially outer groove ring 21, a radially inner hub section 23 and a connecting flange 25 of the rotationally fixed pulley 11, which connects the hub section 23 to the radially outer groove ring 21.
  • each of the centrifugal elements 15 is guided radially adjustable in a radially aligned th guide channel 27.
  • the respective guide channel 27 is designed in the support ring 17 of the switchable pulley 9 to be axially open at the front.
  • the axially open end face of the respective guide channel 27 is closed by the connecting flange 25 of the rotationally fixed pulley 11, so that reliable linear guidance of the centrifugal force elements 15 is ensured.
  • a mating contour 29 is formed on the inner circumference of the grooved ring 21 of the rotationally fixed pulley 11.
  • centrifugal force When centrifugal force is applied, this interacts with the respectively assigned centrifugal force element 15.
  • a radial free space 31 is formed between the support ring 17 of the switchable belt pulley 9 and the inner circumference of the grooved ring 21 of the rotationally fixed belt pulley 11.
  • the respective centrifugal force element 15 can come into engagement with the counter-contour 29 formed on the inner circumference of the groove ring 21 of the rotationally fixed pulley 11, using up the radial free space 31.
  • annular spring 33 which, according to FIG. 8, is stretched with a predefined spring force F1 on the outer circumference of the support ring and in a rest position (FIG. 5) holds the centrifugal force elements 15 in their rest position.
  • Spring grooves 35 in which the annular spring 33 is arranged, are formed both on the outer circumference of the support ring and on the radially outer side of the centrifugal force elements 15.
  • the annular spring 33 can lift off radially outward from the outer circumference of the supporting ring.
  • a circumferential spring groove 37 is formed in FIG. 4 or 6 on the inner circumference of the grooved ring 21.
  • the ring spring 33 which lifts off the inner circumference of the support ring when the action of centrifugal force is very strong, can therefore move radially outward into the spring groove 37 formed on the inner circumference of the groove ring 21.
  • the annular spring 33 is stretched with the predefined spring force F1 on the outer circumference of the support ring, the value of which is approximately 750 N by way of example.
  • F1 spring force
  • the centrifugal force elements 15 push radially outward until reaching the locking position (Fi gur 6 or 7).
  • F2 the spring force

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Pulleys (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

L'invention concerne un ensemble poulies à courroie comportant un organe auxiliaire pour moteur à combustion interne, en particulier un compresseur de climatisation (mKK) et un générateur à poulies à courroie (RSG) doté d'un arbre pour générateur (1), sur lequel sont montées une poulie à courroie (9) commutable par l'intermédiaire d'un dispositif d'accouplement et une poulie à courroie solidaire en rotation (11), la poulie à courroie commutable (9) pouvant être reliée en entraînement à un arbre pour moteur à combustion interne (5) par l'intermédiaire d'un entraînement par courroie (RBKM) et la poulie à courroie solidaire en rotation (11) étant reliée en entraînement à un arbre pour organe (3) de l'organe auxiliaire (mKK) par l'intermédiaire d'un entraînement par courroie pour organes (RmKK), dans un premier fonctionnement en mode moteur (MB1), le générateur à poulie à courroie (RSG) agissant en sortie sur le moteur à combustion interne (BKM), dans un premier sens de rotation d'entraînement (A1), par l'intermédiaire de son arbre pour générateur (1) et par l'intermédiaire de l'entraînement par poulie pour moteur à combustion interne (RBKM), dans un fonctionnement en mode générateur (GB), le moteur à combustion interne (BKM) agissant en sortie sur le générateur à poulie à courroie (RSG), dans le premier sens de rotation d'entraînement (A1), par l'intermédiaire de son arbre pour moteur à combustion interne (5) et par l'intermédiaire de l'entraînement par courroie pour moteur à combustion interne (RBKM), et dans un second fonctionnement en mode moteur (MB2), le générateur à poulies à courroie (RSG) agissant en sortie sur l'organe auxiliaire (mKK) par l'intermédiaire de son arbre pour générateur (1) et par l'intermédiaire de l'entraînement par courroie pour organes (R2). Selon l'invention, le dispositif d'accouplement de la poulie à courroie commutable (9) présente un accouplement à roue libre (K1) et un accouplement centrifuge (K2).
PCT/EP2020/063968 2019-07-16 2020-05-19 Ensemble poulies à courroie WO2021008757A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019210500.9A DE102019210500B4 (de) 2019-07-16 2019-07-16 Riemenscheibenanordnung
DE102019210500.9 2019-07-16

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WO2022012803A1 (fr) * 2020-07-15 2022-01-20 Audi Ag Ensemble poulie à courroie

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DE102021102187A1 (de) 2021-02-01 2022-08-04 Schaeffler Technologies AG & Co. KG Nebengetriebeabschnitt zum Antrieb von mindestens einem Nebenaggregat, Hybridgetriebe mit dem Nebengetriebeabschnitt sowie Fahrzeug mit dem Hybridgetriebe

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DE19754872A1 (de) 1996-12-11 1998-06-18 Ntn Toyo Bearing Co Ltd Riemenscheibe für Freilaufkupplung mit zwei Riemen
EP1454043B1 (fr) 2001-12-15 2005-09-14 Bayerische Motoren Werke Aktiengesellschaft Mecanisme de transmission variable par courroie destine a des groupes auxiliaires
DE102007021195A1 (de) * 2007-05-05 2008-11-06 Schaeffler Kg Aggregatetrieb mit umschaltbarem Übersetzungsverhältnissen
DE102012208274A1 (de) * 2011-06-14 2012-12-20 Schaeffler Technologies AG & Co. KG Riemenscheibenanordnung und Verfahren zum Betrieb eines Nebenaggregats eines Kraftfahrzeugs
DE102013108839A1 (de) 2012-08-20 2014-02-20 Miba Sinter Austria Gmbh Riemenscheibenanordnung
US9017202B2 (en) * 2010-08-23 2015-04-28 Schaeffler Technologies AG & Co. KG Drive train
DE102014223349A1 (de) * 2013-12-13 2015-06-18 Schaeffler Technologies AG & Co. KG Riemenscheibenanordnung

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DE102018126459B3 (de) 2018-10-24 2020-03-19 Schaeffler Technologies AG & Co. KG Nebenaggregate-Riementrieb einer Brennkraftmaschine
DE102019100737A1 (de) 2019-01-14 2020-07-16 Schaeffler Technologies AG & Co. KG Riemenscheibenkupplung

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Publication number Priority date Publication date Assignee Title
DE19754872A1 (de) 1996-12-11 1998-06-18 Ntn Toyo Bearing Co Ltd Riemenscheibe für Freilaufkupplung mit zwei Riemen
EP1454043B1 (fr) 2001-12-15 2005-09-14 Bayerische Motoren Werke Aktiengesellschaft Mecanisme de transmission variable par courroie destine a des groupes auxiliaires
DE102007021195A1 (de) * 2007-05-05 2008-11-06 Schaeffler Kg Aggregatetrieb mit umschaltbarem Übersetzungsverhältnissen
US9017202B2 (en) * 2010-08-23 2015-04-28 Schaeffler Technologies AG & Co. KG Drive train
DE102012208274A1 (de) * 2011-06-14 2012-12-20 Schaeffler Technologies AG & Co. KG Riemenscheibenanordnung und Verfahren zum Betrieb eines Nebenaggregats eines Kraftfahrzeugs
DE102013108839A1 (de) 2012-08-20 2014-02-20 Miba Sinter Austria Gmbh Riemenscheibenanordnung
DE102014223349A1 (de) * 2013-12-13 2015-06-18 Schaeffler Technologies AG & Co. KG Riemenscheibenanordnung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022012803A1 (fr) * 2020-07-15 2022-01-20 Audi Ag Ensemble poulie à courroie

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