CN111306217A - Drive assembly with a slave cylinder fixed to the rear wall of the engine housing - Google Patents

Drive assembly with a slave cylinder fixed to the rear wall of the engine housing Download PDF

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Publication number
CN111306217A
CN111306217A CN201911263901.9A CN201911263901A CN111306217A CN 111306217 A CN111306217 A CN 111306217A CN 201911263901 A CN201911263901 A CN 201911263901A CN 111306217 A CN111306217 A CN 111306217A
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CN
China
Prior art keywords
drive assembly
rear wall
actuator housing
housing
slave cylinder
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.)
Pending
Application number
CN201911263901.9A
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Chinese (zh)
Inventor
S·奥特曼
P·瓦格纳
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of CN111306217A publication Critical patent/CN111306217A/en
Pending legal-status Critical Current

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    • 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
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/083—Actuators therefor
    • 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
    • F16D25/10—Clutch systems with a plurality of fluid-actuated 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • 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
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • 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
    • B60K6/40—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 assembly or relative disposition of components
    • B60K6/405—Housings
    • 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
    • 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
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/087—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation the clutch being actuated by the fluid-actuated member via a diaphragm spring or an equivalent array of levers
    • 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
    • B60K2006/4825—Electric machine connected or connectable to gearbox input 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
    • 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
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • F16D2021/0661—Hydraulically actuated multiple lamellae clutches
    • 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
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/26—Cover or bell housings; Details or arrangements thereof
    • 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)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The invention relates to a drive assembly (1) for a drive train of a motor vehicle, comprising an internal combustion engine (2) and a slave cylinder (6), wherein the internal combustion engine (2) in turn comprises an engine housing (3) and a crankshaft (4) mounted rotatably in the engine housing (3), wherein the slave cylinder is arranged concentrically to the crankshaft (4) and is designed to actuate a clutch (5) located outside the engine housing (3), wherein the slave cylinder (6) is fastened with its actuator housing (7) to a rear wall (8) of the engine housing (3).

Description

Drive assembly with a slave cylinder fixed to the rear wall of the engine housing
Technical Field
The invention relates to a drive assembly for a drive train of a (preferably hybrid) motor vehicle, i.e. a drive train of a motor vehicle (e.g. passenger vehicle, utility vehicle, bus or other utility vehicle) having an internal combustion engine (e.g. a diesel or gasoline engine) and a Slave Cylinder (Concentric Slave Cylinder/"Concentric Slave Cylinder" (CSC)), which in turn has an engine housing and a crankshaft rotatably mounted therein, the Slave Cylinder being arranged concentrically with the crankshaft and being designed for actuating a clutch located outside the engine housing.
Background
Such drive assemblies are already known from the prior art. For example, DE 102017100928 a1 discloses a drive train having a hybrid module with a plurality of clutches.
However, in the prior art, the following disadvantages are associated with the actuation of the slave cylinder of the respective clutch, which is arranged on the internal combustion engine side: these slave cylinders are usually relatively complex to construct and require a relatively large installation space. The slave cylinder, which usually acts on the separating clutch, is usually integrated in an additional intermediate wall, which in particular requires axial installation space.
Disclosure of Invention
The object of the present invention is therefore to overcome the disadvantages known from the prior art and in particular to provide a drive assembly which is as space-saving as possible and has a simple construction.
According to the invention, this is solved by: the slave cylinder is fixed with its actuator housing to the rear wall of the engine housing.
The clutch actuation device in the form of a slave cylinder is therefore received directly on the originally present engine housing of the internal combustion engine, so that the further construction of the drive assembly, in particular the construction of the clutch, can be significantly simplified.
Advantageous embodiments are claimed in the dependent claims and are set forth in detail below.
The assembly of the slave cylinder is simplified if the slave cylinder, which is annular in form, is formed overall (i.e. with the smallest inner diameter) larger than the outer diameter of the fastening flange of the crankshaft, which flange penetrates the rear wall.
A further simplification of the assembly is achieved when the actuator housing is mounted/fixed on the rear wall in a form-fitting and/or force-fitting manner.
In addition, it is also expedient for the actuator housing to be fixed to the rear wall by a screw connection in order to mount the actuator housing in a force-fitting manner. A particularly secure mounting of the actuator housing is thereby achieved.
In this case, it is also advantageous if the control gear of the internal combustion engine is arranged with the cyclical pulling means toward the interior of the engine housing and extends laterally of the rear wall. In this case, the threaded connection is positioned with its screwed position in the circumferential direction about the axis of rotation in a staggered manner relative to the endless traction means.
In addition to the force-locking connection or alternatively thereto, it is also expedient in the case of a form-locking connection for the actuator housing to be fastened to the rear wall by a rotationally fixed plug connection. Thereby further simplifying the assembly process.
Furthermore, it is advantageous if the actuator housing has a (axially protruding) centering projection which is supported (from the inside) on the radial inside of the rear wall, which forms the axial opening. Thereby securely receiving the actuator housing.
In terms of the axial actuating forces which occur during operation and which pass through the slave cylinder, it is advantageous if said axial actuating forces are supported directly in the axial direction by the actuator housing on the rear wall of the engine housing. Ideally, the actuating force is transmitted via, for example, the feedthrough to a bearing point located downstream (for example, on the engine housing) in order to relieve the bearing of the crankshaft.
It is also expedient to arrange a first seal, preferably in the form of a radial shaft sealing ring, radially between the actuator housing and the crankshaft (preferably the screwing flange), which seals the interior of the engine housing against the surroundings.
Further improving the sealing of the inner space are: a second seal (preferably in the form of an O-ring) is arranged axially between the actuator housing and the rear wall, which seals the interior space of the engine housing against the surroundings.
It is also expedient if the slave cylinder also has a piston (which is further preferably embodied as a stepped piston) which is received in a movable manner in the actuator housing and delimits a hydraulic pressure chamber together with the actuator housing, wherein the pressure medium feed opening into the pressure chamber has a line running in the radial direction and connected to the actuator housing.
The drive assembly also advantageously has multiple clutches and/or hybrid modules.
In this connection, it is also expedient for the crankshaft to be coupled in rotation to the first clutch component of the clutch either indirectly (for example via a torsional vibration damper, such as a dual mass flywheel) or directly.
In other words, according to the invention, the CSC (concentric slave cylinder) is thus mounted/fixed on the back side of the engine in order to save space.
Drawings
The invention will now be explained in detail below with reference to the drawings.
The figures show:
fig. 1 is a longitudinal section through a part of a drive assembly according to the invention, in the region of a slave cylinder which actuates a clutch and an internal combustion engine shown on the rear wall and crankshaft side,
fig. 2 is a perspective view of a part of the drive assembly, cut in the longitudinal direction of fig. 1, wherein the side of the rear wall facing away from the interior space of the combustion engine can be seen,
fig. 3 shows a perspective view of a part of the drive assembly in a full view of the side of the rear wall facing the interior of the internal combustion engine, wherein the course of the endless traction means of the control gear can be seen, and
fig. 4 is a schematic longitudinal section of the drive assembly in the region of the hybrid module.
The figures are merely schematic features and are only intended to understand the invention. Like elements are provided with like reference numerals.
Detailed Description
The principle structure of the drive assembly 1 according to the invention can be clearly seen in connection with fig. 4. The drive assembly 1 has an internal combustion engine 2. The internal combustion engine 2 is typically embodied as a diesel or gasoline engine. For the sake of clarity, the internal combustion engine 2 can be seen only with respect to one end of its crankshaft 4 and its rear wall 8 of the engine housing 3. Fig. 4 shows the engine housing 3 in a greatly simplified manner. The drive assembly 1 also has a triple clutch device embodied as a hybrid module 25. The drive assembly 1 is thus part of a hybrid drive train of a motor vehicle.
A torsional vibration damper arrangement 26 in the form of a dual-mass flywheel is used between the crankshaft 4 and the hybrid module 25, i.e. the (first) clutch 5 of the hybrid module 25. The crankshaft 4 is therefore indirectly coupled to the first clutch 5 via the torsional vibration damper arrangement 26. The primary side 39 of the torsional vibration damper arrangement 26 is fastened to the fastening flange 9 by a screw connection. The secondary side 40 of the torsional vibration damper arrangement 26 is connected to the first clutch component 21a of the first clutch 5 or directly forms this first clutch component 21a in part. In a further embodiment, the first clutch 5/first clutch component 21a is preferably fastened directly to the tightening flange 9.
The hybrid module 25 has a structure as a multiple clutch device, that is, a triple clutch device, and includes a second clutch 27 and a third clutch 28 in addition to the first clutch 5 serving as a separation clutch. The second and third clutches 27, 28 together form a double clutch. The second and third clutches 27, 28 are thus used to selectively attach the central rotor carrier 29 of the hybrid module 25 to one of the two transmission input shafts of the transmission, which are not further shown here for clarity. The second clutch component 21b of the first clutch 5 is in turn coupled in a rotationally fixed manner to the rotor carrier 29.
Typically, for the hybrid module 25, the rotor 30 of the electric machine 31 is coupled to the rotor carrier 29 in a rotationally fixed manner. In this embodiment, the rotor 30 is directly (concentrically) fitted on the rotor holder 29. Thus, the first clutch 5 is effectively used between the crankshaft 4 and the rotor carrier 29 in order to selectively decouple or couple the rotor carrier 29 from or to the crankshaft 4 during operation.
The detailed design of the drive assembly 1 in the region of the internal combustion engine 2 and in the slave cylinder 6 acting on the first clutch 5 is explained in conjunction with fig. 1 to 3. According to the invention, the slave cylinder 1 is fixed to the rear wall 8 of the engine housing 3. In this embodiment, the rear wall 8 is a cover for the control gear 22 of the internal combustion engine 2 and is therefore further connected to a base body in the form of an engine block of the engine housing 3, which is not shown for clarity.
The slave cylinder 6 is realized as a hydraulic slave cylinder 6. The slave cylinder 6 is also designed as a concentric slave cylinder 6. The slave cylinder 6 is therefore designed as a whole as a ring and is arranged concentrically with respect to the rotational axis 32 of the crankshaft 4. The slave cylinder 6 surrounds the crankshaft 4 radially from the outside toward the end region, i.e., the slave cylinder 6 is arranged radially above the crankshaft 4.
The slave cylinder 6 is fastened with its actuator housing 7 directly to the rear wall 8. For this purpose, a form-locking connection is realized as plug connection 10. The plug connection 10 is basically designed such that the actuator housing 7 is fixed to the rear wall 8 in a rotationally fixed manner. The actuator housing 7 is thus fixedly supported on the rear wall 8 about the axis of rotation 32. In addition to or instead of the plug connection 10, in a further embodiment a threaded connection is provided between the actuator housing 7 and the rear wall 8.
The actuator housing 7 always bears against the rear wall 8 on the axial side of the rear wall 8 facing away from the interior 14 of the internal combustion engine 2 and is therefore supported on this rear wall 8. The actuator housing 7 rests with axially extending centering projections 11 on a radially inner side 13, which delimits a central opening 12 of the rear wall 8. The actuator housing 7 is thereby also supported directly on the rear wall 8 in the radial direction. The opening 12 is in turn used in a typical manner for leading through the crankshaft 4. In particular, the crankshaft 4 projects with its screw flange 9 through the opening 12 out of the engine housing 3/rear wall 8.
The other construction of the slave cylinder 6 corresponds to a large extent to the typical construction of a concentric slave cylinder. The slave cylinder 6 therefore has a piston 18 which, together with the actuator housing 7, delimits the hydraulic pressure chamber 17. The piston 18 is adjustable between a retracted position shown in fig. 1 and 2 and an extended position in order to engage/disengage the first clutch 5, according to the hydraulic pressure in the pressure chamber 17. The piston 18 is connected to the actuating bearing 33 in a rotationally fixed manner. The actuating bearing 33 is also considered as an integral part of the slave cylinder 6. As can be seen in fig. 4, the outer bearing ring 34 of the actuating bearing 33, which is embodied as a rolling bearing, is received directly on the piston 18, and the inner bearing ring 35 of the actuating bearing 33 is connected to a shifting element 36 which actuates the first clutch 5 and which is in turn connected to the first clutch 5 in a rotationally fixed manner.
Furthermore, fig. 4 clearly shows that the slave cylinder 6 is formed overall to be larger than the maximum outer diameter of the crankshaft 4 in the region of the fastening flange 9. Thus, both the actuator housing 7, the piston 18 and the actuating bearing 33 are configured with their smallest inner diameter which is greater than the outer diameter of the tightening flange 9.
In order to seal the inner space 14 of the internal combustion engine 2 from the surroundings, a first seal 15 in the form of a radial shaft seal ring is mounted in the radial direction between the actuator housing 7 and the radially outer side of the screwing flange 9. The first seal 15 bears directly sealingly against the screwing flange 9 and against the actuator housing 7. In order to axially fix the first seal 15, i.e. to prevent the first seal 15 from slipping out of its seal seat, a radially inwardly projecting retaining nose 37 is molded on the actuator housing 7. Furthermore, the first seal 15 bears against the radially inner side of the region of the actuator housing 7 which directly forms the centering projection 11. A second seal 16 in the form of an O-ring is mounted between the actuator housing 7 and the rear wall 8 in the axial direction on the axial side of the rear wall 8 facing away from the inner space 14. The second seal 16 is preferably a component of the slave cylinder 6 and is therefore fixed in position on the actuator housing 7.
As can also be seen clearly in fig. 1 and 2, a pressure medium supply 19 is provided in the delimited peripheral region of the actuator housing 7, which opens into the pressure chamber 17. The pressure medium supply 19 has a line 20 which extends radially outward. The line 20 is connected to a connecting stub 38 of the actuator housing 7.
As can be seen in fig. 3, a part of the control gear 22 is arranged toward the axial side of the rear wall 8 facing away from the first clutch 5. The endless traction means 23 of the control gear 22 extends here. The schematically illustrated endless traction means 23 is realized as a chain and engages with the toothing 24. The cyclical traction means 23 is therefore coupled in a rotationally fixed manner to the crankshaft 4 via the toothing 24. The circulating traction means 23 extends outwardly in a radial direction away from the crankshaft 4. It should be noted here that the respective screwing points are arranged offset in the circumferential direction with respect to the course of the cyclical traction means 23, provided that, in addition to or instead of the plug connection 10, a threaded connection is used between the actuator housing 7 and the rear wall 8.
In other words, the embodiment according to the invention relates to a CSC6 fixed on the rear side of the engine (rear wall 8), which CSC6 surrounds the crankshaft end (screwing flange 9). Furthermore, the functions performed so far inside the engine are integrated into the CSC6 as desired. Ideally, both the CSC6 and the corresponding bearing (actuating bearing 33) are here larger in diameter than the crankshaft end 9, so that the further components can be easily assembled.
The proposed CSC6 according to the invention, which is fixed on the engine rear side 8, is preferably supplied with hydraulic fluid via the line 20. Ideally, the CSC6 is configured such that it surrounds the crankshaft 4, which also means that the release bearing (steering bearing 33) should be larger than the crankshaft 4. This can enable, as in the present case, the fitting of the damper 26 or the clutch flange (first clutch component part 21a) to the crankshaft end 4 to be permitted. The CSC6 can be centered in the housing 3 on a centering diameter. The screwing dome/screwing position should be between the points of control of the transmission 22 (chain 23). Alternatively, the CSC6 could also be merely plugged in against rotation instead of being screwed in. Ideally, the CSC6 assumes even other functions. Sealing of the engine housing 3 with respect to the crankshaft 4 is achieved, for example, by means of an optional O-ring 16 and a radial shaft sealing ring 15. In case the radial shaft sealing ring 15 is part of a CSC6, this CSC6 is fixed, for example by a threaded connection. In fig. 3, the chain drive 22 is shown from the inside and it is shown that a screw connection cannot be made at two locations where the chain 23 is guided radially outwards. In another embodiment, the CSC6 may also be implemented with a stepped piston 18. A lever actuation supported on the rear wall 8 of the engine is also conceivable. Ideally, the force exerted by the CSC6 is not applied to the crankshaft 4, but is transmitted via, for example, a feedthrough to a bearing point located behind it in order to unload the bearing of the crankshaft 4. If this is not possible, the support portion is reinforced accordingly.
List of reference numerals
1 drive assembly
2 internal combustion engine
3 Engine casing
4 crankshaft
5 Clutch
6 slave cylinder
7 actuator housing
8 rear wall
9 tightening flange
10 plug connection
11 centering projection
12 opening
13 inner side
14 inner space
15 first seal
16 second seal
17 pressure chamber
18 piston
19 pressure medium input device
20 pipeline
21a first clutch component
21b second clutch component
22 control transmission mechanism
23-cycle traction device
24 tooth system
25 hybrid module
26 torsional vibration damper
27 second clutch
28 third clutch
29 rotor support
30 rotor
31 electric machine
32 axis of rotation
33 handling bearing
34 bearing outer ring
35 bearing inner ring
36 moving element
37 holding nose
38 connecting pipe
39 primary side
40 secondary side

Claims (10)

1. A drive assembly (1) for a drive train of a motor vehicle, having an internal combustion engine (2) and having an engine housing (3) and a crankshaft (4) rotatably mounted in the engine housing (3), and having a slave cylinder (6), which is arranged concentrically to the crankshaft (4) and is designed for actuating a clutch (5) outside the engine housing (3), characterized in that the slave cylinder (6) is fastened with its actuator housing (7) to a rear wall (8) of the engine housing (3).
2. The drive assembly (1) according to claim 1, characterized in that the slave cylinder (6) configured as a ring is configured overall to be larger than the outer diameter of a screwing flange (9) of the crankshaft (4) through the rear wall (8).
3. Drive assembly (1) according to claim 1 or 2, characterized in that the actuator housing (7) is mounted on the rear wall (8) in a form-fitting and/or force-fitting manner.
4. The drive assembly (1) according to claim 3, characterized in that the actuator housing (7) is fixed to the rear wall (8) by a threaded connection.
5. Drive assembly (1) according to claim 3 or 4, characterized in that the actuator housing (7) is fixed on the rear wall (8) by a twist-proof plug connection (10).
6. Drive assembly (1) according to one of claims 1 to 5, characterized in that the actuator housing (7) has a centering projection (11), which centering projection (11) is supported on a radially inner side (13) of the rear wall (8) forming an axial opening (12).
7. Drive assembly (1) according to one of claims 1 to 6, characterized in that a first seal (15) is arranged radially between the actuator housing (7) and the crankshaft (4), which first seal seals an interior space (14) of the engine housing (3) from the surroundings.
8. Drive assembly (1) according to one of claims 1 to 7, characterized in that a second seal (16) is arranged axially between the actuator housing (7) and the rear wall (8), which second seal seals the interior space (14) of the engine housing (3) from the surroundings.
9. Drive assembly (1) according to one of claims 1 to 8, characterized in that the slave cylinder (6) also has a piston (18) which is movably received in the actuator housing (7) and which delimits a hydraulic pressure chamber (17) together with the actuator housing (7), wherein a pressure medium feed (19) opening into the pressure chamber (17) has a line (20) running in the radial direction which is connected to the actuator housing (7).
10. The drive assembly (1) according to one of claims 1 to 9, characterized in that the crankshaft (4) is in indirect or direct rotational connection with a first clutch constituent (21a) of the clutch (5).
CN201911263901.9A 2018-12-11 2019-12-11 Drive assembly with a slave cylinder fixed to the rear wall of the engine housing Pending CN111306217A (en)

Applications Claiming Priority (2)

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DE102018131680.1A DE102018131680A1 (en) 2018-12-11 2018-12-11 Drive arrangement with slave cylinder attached to the rear of the engine housing
DE102018131680.1 2018-12-11

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Publication Number Publication Date
CN111306217A true CN111306217A (en) 2020-06-19

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CN201911263901.9A Pending CN111306217A (en) 2018-12-11 2019-12-11 Drive assembly with a slave cylinder fixed to the rear wall of the engine housing

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DE (1) DE102018131680A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021002536A1 (en) * 2021-05-14 2022-11-17 Mercedes-Benz Group AG Drive train for a motor vehicle, in particular for a motor vehicle

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DE102016217832A1 (en) * 2016-09-19 2018-03-22 Schaeffler Technologies AG & Co. KG Dirt protection on clutch slave cylinders and groove seal with inlet bore on clutch slave cylinders

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CN101395397A (en) * 2006-03-06 2009-03-25 卢克摩擦片和离合器两合公司 Device for actuating a clutch
JP2008095740A (en) * 2006-10-06 2008-04-24 Special Parts Takegawa:Kk Clutch device for motorcycle
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