WO2004069576A1 - Antriebsvorrichtung - Google Patents
Antriebsvorrichtung Download PDFInfo
- Publication number
- WO2004069576A1 WO2004069576A1 PCT/EP2003/013449 EP0313449W WO2004069576A1 WO 2004069576 A1 WO2004069576 A1 WO 2004069576A1 EP 0313449 W EP0313449 W EP 0313449W WO 2004069576 A1 WO2004069576 A1 WO 2004069576A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- differential
- output
- drive
- interaxle differential
- output torque
- Prior art date
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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
- B60K17/35—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous 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
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
- B60K17/346—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear
- B60K17/3462—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear with means for changing distribution of torque between front and rear wheels
-
- 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
- B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
- B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
Definitions
- the invention relates to a drive device for all-wheel drive motor vehicles, according to the preamble of claim 1.
- All-wheel drives are known in a large number of designs, for example as permanent all-wheel drive, as switchable all-wheel drive, for example via a viscous coupling (shear friction clutch), or with drive torque distribution by means of one or more electrohydraulically controllable multi-plate clutches. If drive torque distribution is to take place in such all-wheel drive systems, however, they are relatively complicated and complex in terms of control technology. Furthermore, they are not infinitely variable from z. B. rear-heavy (drive torque increased on the rear axle) over neutral to front-load reversible.
- the object of the invention is to propose a drive device of the generic type, which allows a continuously variable distribution of drive torque to the front and rear wheels of the motor vehicle with relatively little structural and control engineering effort.
- the solution to the problem is based on the following features: - The output transmission ratios between the first and the second axle differential are different;
- the design of the interaxle differential is such that there are different output torques to the axle differentials, the higher output torque being placed on the shorter geared differential;
- a slip-controlled multi-plate clutch is engaged between the drive element of the interaxle differential and the output element with the lower output torque
- the multi-plate clutch can be controlled depending on the operating parameters of the motor vehicle for variable distribution of the output torques of the interaxle differential.
- the basic distribution is changed simply and quickly in terms of control technology in the direction of neutral and reverse basic distribution, this control of operating parameters of the motor vehicle such as speed, road condition, and gradients or gradient, switching state of the change gear etc. is controlled dependent. It is furthermore preferably proposed that the shorter output ratio is carried out on the axle differential driving the rear wheels of the motor vehicle and that the higher output torque of the intermediate axle differential is switched to this axle differential. This creates a rear-heavy basic distribution, which can offer dynamic driving advantages, particularly in the case of sporty motor vehicles, and which can be variably changed at any time if necessary.
- the interaxle differential can be an asymmetrically designed bevel gear differential or preferably a more robust and more controllable planetary gear with regard to the output torque distribution.
- a structurally particularly compact and with regard to the combination with a conventional all-wheel drive motor vehicle a problem-free extension to a variably controllable all-wheel drive construction is characterized in that the drive shaft of the change gearbox, which is connected to the drive element of the interaxle differential, is a hollow shaft, at the end of which the drive element faces A multi-plate clutch is arranged, which can be coupled to the output shaft of the interaxle differential which is fed back through the hollow shaft.
- the outer wheel of the planetary gear with the higher output torque is preferably operatively connected to the shorter translated axle differential for driving the rear wheels of the motor vehicle, as a result of which given a particularly favorable distribution of output torques within the interaxle differential with a structurally simple design and arrangement of the planetary gear in question.
- the planetary gear can be a double planetary gear, the radially inner planet gears of which mesh with the sun gear and the outer planet gears of which mesh with the outer wheel, the outer wheel also forming the drive element and the output element for the shorter translated axle differential being the planet gear carrier carrying the two planetary gear sets.
- the operating parameters can preferably be a plurality of electronically stored driving programs of an automatic speed change transmission of the motor vehicle, the preselection of which different output torque distributions of the interaxle differential are predetermined by appropriate actuation of the multi-plate clutch.
- a winter program for example, basically more drive ment to the front wheels of the motor vehicle and in a sports program more drive torque to the rear wheels can be controlled.
- particularly advantageously modified driving dynamics parameters can be stored in a control unit of an electronic driving stability program of the motor vehicle and, in addition to the known interventions such as brake intervention and drive torque reduction of the drive machine, can change the output torque distribution of the interaxle differential in the neutral direction and beyond by appropriate additional control of the multi-plate clutch.
- FIG. 1 shows a block diagram of a drive device for an all-wheel drive motor vehicle, with a speed change gear with an integrated front axle differential, an interaxle differential and a rear axle differential;
- FIG. 2 shows the interaxle differential according to FIG. 1 with slip-controlled multi-plate clutch and simple planetary gear
- FIG. 3 shows a modified interaxle differential according to FIG. 1 with a double planetary gear.
- 10 denotes the drive device for an all-wheel drive for motor vehicles, with a speed change gear 12 with an integrated axle differential 14, which is only partially shown Drive of the front wheels of the motor vehicle, an also integrated interaxle differential 16 (cf. in detail Fig. 2 or 3) and an output shaft 18 (z. B. a cardan shaft) which is drivingly connected to an axle differential 19 driving the rear wheels of the motor vehicle ,
- the drive flow runs from a driving internal combustion engine with a power output shaft 20 via a separating clutch 22 to the transmission input shaft 24 and via the gear stages 26 or 28 only partially shown to a hollow drive shaft 30.
- the drive shaft 30 drives the interaxle differential 16 in a manner to be described below, while its output shafts 18, 40 drive said axle differentials 14, 19 via corresponding drive pinions 42 and ring gears 44.
- axle differentials 14 and 19 which are, for example, bevel gear differentials, have different gear ratios (e.g. ring gears 44 with different numbers of teeth), the gear ratio of the rear axle differential 19 being shorter relative to the front axle differential 14. This means that when the front wheels and rear wheels of the motor vehicle (not shown) slip without slippage, the output shaft 18 rotates relatively faster than the output shaft 40 driving the front axle differential 14.
- the interaxle differential 16 is designed as a simple planetary gear, with a planet gear carrier 32 as a drive element, which is connected via the planet gears 34 to the externally toothed sun gear 36 and the internally toothed outer gear 38.
- the sun gear 36 is the one output element on the output shaft 40 arranged and drives in the rear drive through the hollow drive shaft 30 through the front axle differential 14, while the output shaft 18 is connected to the other output element of the planetary gear or the outer wheel 38.
- the design of the interaxle differential 16 or its planetary gear is such that in the basic constructional distribution on the output shaft 18 to the axle differential 19 with the shorter drive ratio a higher output torque (70%) and on the output shaft 40 to the front axle differential 14 a lower output torque (30 %) is aborted.
- a multi-plate clutch 46 which is only shown in simplified form, is integrated into the interaxle differential 16, the housing 48 of which is fixedly connected to the planet gear carrier 32 and the clutch plates 50 are connected in a known manner to the output shaft 40 with the lower output torque in a known manner via splines, not shown.
- the multi-plate clutch 46 is actuated in a manner that is not shown and is known per se by electro-hydraulic (or electrical) slip control and effects a continuously variable change in the predetermined output torque distribution of the interaxle differential 16.
- the multi-plate clutch 46 is increasingly closed (but always in the slip range), resulting in the output torque due to the difference in speed is increasingly shifted from the output shaft 18 to the output shaft 40.
- the slip control or slip control of the multi-plate clutch 46 takes place via an electronic control unit (not shown) which, depending on operating and driving dynamics parameters, controls the clutch slip for variably changing the output torques of the interaxle differential 16, the control unit controlling a corresponding hydraulic actuating device with a pressure medium source and an actuating cylinder ,
- the control unit evaluates i.a. Both signals from a drive program selector switch of the change gear 12 as well as signals from a control unit of a driving stability program of the motor vehicle such that when a sports program of the optionally automatic change gear 12 is engaged there is a greater rear load on the all-wheel drive (less slip engagement of the multi-plate clutch 46) than, for example, with a winter program with a correspondingly more careful driving style and more neutral torque distribution.
- the driving stability program or its control unit can also intervene in the slip control of the multi-plate clutch 46 and, when the motor vehicle begins to become unstable (recognizable, for example, via a yaw angle sensor of the driving stability program), the output torque distribution of the interaxle differential 16 towards neutral change quickly and effectively.
- the interaxle differential 16 'of FIG. 3 is a dual planetary gear in place of the simple planetary gear as follows. The same parts are provided with the same reference numerals.
- the output shaft 18 for driving the rear axle differential 19 is connected to the planet carrier 52 as the one output element of the planetary gear.
- the housing 48 of the multi-plate clutch 46 carries the outer wheel 54 as the drive element of the double planetary gear.
- the further output element is the sun gear 56, which, as above, is connected to the front axle differential 14 and the clutch plates 50 via the output shaft 40.
- the planet gear carrier 52 carries on corresponding pivots radially offset and intermeshing planet gears 58, of which the radially inner planet gears 58 mesh with the sun gear 56 and the radially outer planet gears 58 with the outer gear 54.
- the function of the interaxle differential 16 ' is as previously described.
- the invention is not restricted to the exemplary embodiments described. In this way, the different drive ratios of the axle differentials 14, 19 can also be created by additional gears (for example, a countershaft) or possibly even by different tire sizes on the front wheels and rear wheels of the motor vehicle.
- the slip control of the multi-plate clutch 46 can also be used as a differential lock, but a residual slip on the multi-plate clutch 46 must always be ensured.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03767707A EP1592574A1 (de) | 2003-02-06 | 2003-11-28 | Antriebsvorrichtung |
US10/544,712 US20060142119A1 (en) | 2003-02-06 | 2003-11-28 | Drive mechanism |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10304813A DE10304813A1 (de) | 2003-02-06 | 2003-02-06 | Antriebsvorrichtung |
DE10304813.8 | 2003-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004069576A1 true WO2004069576A1 (de) | 2004-08-19 |
Family
ID=32730811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/013449 WO2004069576A1 (de) | 2003-02-06 | 2003-11-28 | Antriebsvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060142119A1 (de) |
EP (1) | EP1592574A1 (de) |
DE (1) | DE10304813A1 (de) |
WO (1) | WO2004069576A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012072202A1 (de) * | 2010-11-30 | 2012-06-07 | Daimler Ag | Kraftfahrzeugantriebsstrangvorrichtung |
US8649929B2 (en) | 2010-10-04 | 2014-02-11 | Audi Ag | Motor vehicle with all-wheel drive |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004039266B4 (de) * | 2004-08-13 | 2006-08-03 | Audi Ag | Antriebsaggregat für Kraftfahrzeuge |
DE102004046008B4 (de) * | 2004-09-16 | 2012-01-26 | Getrag Driveline Systems Gmbh | Antriebsstrang und Verfahren zum Ansteuern eines Antriebsstranges |
DE102011100815B4 (de) * | 2011-05-06 | 2018-11-29 | Audi Ag | Antriebsvorrichtung für allradgetriebene Kraftfahrzeuge |
DE102014006232B4 (de) * | 2014-04-30 | 2018-04-05 | Audi Ag | Getriebeeinrichtung für ein Kraftfahrzeug |
DE102017220167B3 (de) * | 2017-11-13 | 2019-03-21 | Audi Ag | Antriebsvorrichtung für eine Fahrzeugachse eines zweispurigen Fahrzeugs |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851115A (en) * | 1950-12-21 | 1958-09-09 | Rockwell Spring And Axie Compa | Vehicle drive mechanism automatically directing power to slower rotating |
EP0415630A1 (de) * | 1989-08-28 | 1991-03-06 | Fuji Jukogyo Kabushiki Kaisha | Steuerung der Verteilung des Drehmomentes für ein Kraftfahrzeug mit Allradantrieb |
US5450919A (en) * | 1993-01-12 | 1995-09-19 | Mazda Motor Corporation | Differential action control system of a vehicle |
EP0911205A2 (de) * | 1997-10-24 | 1999-04-28 | Fuji Jukogyo Kabushiki Kaisha | Steuerungssystem für die Grenzkraft eines Differentials in einem vierradangetriebenen Fahrzeug |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3600870C1 (de) * | 1986-01-15 | 1987-06-11 | Daimler Benz Ag | Schaltvorrichtung fuer zwei Kupplungen zum Umschalten zwischen einachsigem Standardantrieb und zweiachsigem Allradantrieb bei einem Kraftfahrzeug mit zwei antreibbaren Fahrzeugachsen |
DE4111615A1 (de) * | 1991-04-10 | 1992-10-15 | Daimler Benz Ag | Fahrzeug mit allradantrieb unter verwendung eines zentralen ausgleichsgetriebes mit einer regelbaren sperrkupplung |
DE4409224C2 (de) * | 1993-03-31 | 2003-11-20 | Volkswagen Ag | Allradantrieb |
US5651749A (en) * | 1996-02-13 | 1997-07-29 | New Venture Gear, Inc. | Full-time transfer case with synchronized dual planetary gear reduction unit |
GB9611855D0 (en) * | 1996-06-06 | 1996-08-07 | Rover Group | A power train for a motor vehicle |
US6142905A (en) * | 1997-03-21 | 2000-11-07 | New Venture Gear, Inc. | Full-time four-wheel drive transmission with limited slip clutch |
US5902205A (en) * | 1997-12-15 | 1999-05-11 | New Venture Gear, Inc. | Full-time transfer case with integrated planetary gearset and biasing clutch |
US6579204B2 (en) * | 1999-03-09 | 2003-06-17 | New Venture Gear, Inc. | Synchronized two-speed transfer case with lockable limited slip differential |
US6645109B2 (en) * | 2001-03-27 | 2003-11-11 | New Venture Gear, Inc. | Two-speed transfer case with ball-ramp clutch and single motor activator/shift system |
-
2003
- 2003-02-06 DE DE10304813A patent/DE10304813A1/de not_active Withdrawn
- 2003-11-28 WO PCT/EP2003/013449 patent/WO2004069576A1/de not_active Application Discontinuation
- 2003-11-28 US US10/544,712 patent/US20060142119A1/en not_active Abandoned
- 2003-11-28 EP EP03767707A patent/EP1592574A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851115A (en) * | 1950-12-21 | 1958-09-09 | Rockwell Spring And Axie Compa | Vehicle drive mechanism automatically directing power to slower rotating |
EP0415630A1 (de) * | 1989-08-28 | 1991-03-06 | Fuji Jukogyo Kabushiki Kaisha | Steuerung der Verteilung des Drehmomentes für ein Kraftfahrzeug mit Allradantrieb |
US5450919A (en) * | 1993-01-12 | 1995-09-19 | Mazda Motor Corporation | Differential action control system of a vehicle |
EP0911205A2 (de) * | 1997-10-24 | 1999-04-28 | Fuji Jukogyo Kabushiki Kaisha | Steuerungssystem für die Grenzkraft eines Differentials in einem vierradangetriebenen Fahrzeug |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8649929B2 (en) | 2010-10-04 | 2014-02-11 | Audi Ag | Motor vehicle with all-wheel drive |
WO2012072202A1 (de) * | 2010-11-30 | 2012-06-07 | Daimler Ag | Kraftfahrzeugantriebsstrangvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
EP1592574A1 (de) | 2005-11-09 |
DE10304813A1 (de) | 2004-08-19 |
US20060142119A1 (en) | 2006-06-29 |
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