Patent RU2016150502A3

DISTRIBUTOR GEAR WITH VISCOSITY COUPLING

IMPROVEMENTS IN OR RELATING TO TORQUE SPLITTING DIFFERENTIALS

... 1,261,298. Differential gearing; driving multiple axles. DANA CORP. 15 Sept., 1970 [15 Sept., 1969], No. 44095/70. Heading B7H. [Also in Division F2] To provide a torque flow greater to the rear axle than to the front axle of a four-wheel drive motor vehicle in which a limited slip bevel differential inter-axle 34 is connected to the rear and front axles (not shown) of the vehicle through respective propeller shafts 54, 56, a multi-disc friction clutch 96, 98 is interposed between the differential casing 42 and a flanged sleeve 97 which is splined to the rear axle propeller shaft and drivingly connected via facial teeth 92, 94 to a bevel side gear 84 whereby in operation equal torques T 1 and T 2 flow to the front and rear propeller shafts 56, 54, in the normal manner by the equal diameter side gears 82, 84 and a further torque flow T 3 is provided at the rear propeller shaft via the friction clutch 96, 98 engaged by the axial thrust generated between the facial teeth 92, 94 of the side ...

A drive arrangement for a four-wheel drive motor vehicle

An all-wheel driven motor vehicle capable of operating in an understeering or an oversteering condition comprises a front axle, a rear axle, and an interaxle differential comprising a planetary gear system, a releasable coupling, and a liquid friction coupling. The planetary gear system includes an input member connected to the motor of the vehicle, a first output member connected to the front axle, and a second output member connected to the rear axle. The releasable coupling interconnects the first and second output members. The liquid friction coupling is disposed between the first output member and the front axle. The three-torque transmitting members of the planetary gear system are selected so that when the releasable coupling is disengaged, the vehicle operates in an understeering condition under normal running conditions. When the releasable coupling engages the first and second output members together, the liquid friction coupling reduces the torque supplied to the front axle so ...

AUTOMOTIVE DIFFERENTIALS PARTICULARLY FOR USE IN MULTIPLE DRIVING AXLE VEHICLE

... 1394886 Differential gear BORG-WARNER CORP 23 Aug 1972 [20 Sept 1971] 39291/72 Heading F2D In a differential suitable for a four-wheel drive vehicle and having an input shaft, two output shafts and a fluid operated friction clutch adapted to couple together two of the shafts, a control device responsive to the speed ratio between two of the shafts is adapted to supply fluid to the clutch to effect coupling when the speed ratio exceeds predetermined limits. As shown, the differential comprises a planet carrier 70, driven by an input shaft 30, a ring 68 secured to the output shaft 53, and a sun 66 on a sleeve shaft 52, which drives the output shaft 50 through gears 54, 56. An hydraulically operated friction clutch 58 acts between the sun 66 and ring 68 (i.e. between shafts 52, 53), and is connectible to a pressure fluid source through passages in the shafts 52, 30 and a normally-closed valve 64. The valve 64 comprises a valve member 116, rotatable on the input shaft 30 and formed with axial ...

VISCOUS COUPLING

Power transmitting structure utilizing viscous fluid

PCT No. PCT/JP86/00038 Sec. 371 Date Nov. 10, 1986 Sec. 102(e) Date Nov. 10, 1986 PCT Filed Jan. 31, 1986 PCT Pub. No. WO86/04654 PCT Pub. Date Aug. 14, 1986.In an operation chamber 19 filled with silicone oil, there is provided a first resistance plate 21, which is spline-mated to the outer circumference of a first transmission shaft 3, and a second resistance plate 23, which is spline-mated to a second transmission shaft 9. These two resistance plates 21, 23 are clamped at both sides thereof by a clamp means formed from a pair of ring members 27, 29. The ring members 27, 29 are joined to a piston formed from the first transmission shaft 3, the sideplate 11, and a stopper ring 25. Then, when this piston moves in thrust and the clearance between the ring members 27, 29 shrinks, the blocks of the first resistance plate 21 and the second resistance plate 23 arranged side by side are clamped and abutted closely to produce a friction force at the resistance plates 21, 23.

Control system and method of controlling a driveline

Differential gear mechanism

... 804,775. Motor vehicle driving gear. GLEASMAN, V. E. March 21, 1956, No. 8801/56. Class 79(2) [Also in Group XXIV] In a differential gear the casing 30 rotated by a gear 32 has pairs of worm wheels 60 mounted therein. The worm wheels of each pair carry imtermeshing spur gears 61 and gear with worms 70 fixed to the wheel axles 75. The diameter of the worms 70 is greater than that of the worm wheels. This arrangement ensures equal driving power to be transmitted to the wheel axles and prevents wheel spinning. Unequal power may be transmitted to the wheel axles by making the spur gears 61 of differing sizes or by giving the worms 70 different lead angles. As applied to a vehicle, forward and rear axle shafts 90,. 113, Fig. 10, are driven through differentials 91, 112. Differential 91 is driven from one output member of a differential 101 through gearing 92...95 and the other differential 112 is driven from the other output member 103 of the differential 101 through a universal joint 104 and ...

ANTRIEBSANORDNUNG FUER ALLRADGETRIEBENE KRAFTFAHRZEUGE

An all-wheel driven motor vehicle capable of operating in an understeering or an oversteering condition comprises a front axle, a rear axle, and an interaxle differential comprising a planetary gear system, a releasable coupling, and a liquid friction coupling. The planetary gear system includes an input member connected to the motor of the vehicle, a first output member connected to the front axle, and a second output member connected to the rear axle. The releasable coupling interconnects the first and second output members. The liquid friction coupling is disposed between the first output member and the front axle. The three-torque transmitting members of the planetary gear system are selected so that when the releasable coupling is disengaged, the vehicle operates in an understeering condition under normal running conditions. When the releasable coupling engages the first and second output members together, the liquid friction coupling reduces the torque supplied to the front axle so ...

Drive arrangement for a motor vehicle with two driving axles

In a drive arrangement for a motor vehicle, a differential gear 5 is connected between the two driving axles, which is designed as a three-link planetary gear system and is lockable. One gear link 4 of this differential gear is in driving connection with the engine 1, the second gear link 12 forms the drive for one driving axle 15, and the third gear link 6, via a transverse shaft 9 and an angular drive 10, drives a propeller shaft 11 to the other driving axle. In order to bring about automatic locking of the differential gear 5, a three-link planetary gear 16 designed with gearwheels lying in one plane is provided as a lock, one gear link 17 of which is located on the transverse shaft 9, whereas the other gear link 20 has a rotationally fixed connection to one half 23, 24 of a fluid friction clutch 21, the other half 22 of which is held non-rotatably. The third link 18 of the planetary gear 16 is in driving connection with that gear link 12 of the differential gear 5 forming the output ...

MIT EINER BREMSEINRICHTUNG VERSEHENES AUSGLEICHGETRIEBE FUER KRAFTFAHRZEUGE

The differential drive is for a vehicle having a three memebr planetary gear transmission. One member of the transmission is connected to the drive, and the other two form the driven part, with a fluid coupling serving as a braking device. The fluid coupling (15) is steplessly controllable with respect to torque transmission in relation to the rotational speed difference, and a releasable dividing coupling (13) is arranged in series between the fluid coupling and the planteary gear transmission (5). USE/ADVANTAGE- Efficient distribution of power to the wheels of a road vehicle under all operating conditions as for example when traversing a tight curve.

VERTEILERGETRIEBE MIT KOAXIALEN ABTRIEBSWELLEN UND EINEM SCHALTBAREN GRUPPENGETRIEBE

DRIVE ARRANGEMENT FOR A MOTOR VEHICLE WITH TWO TRIEBACHSEN

SPERRSYSTEM FOR A MOTOR VEHICLE WITH ALL-WHEEL DRIVE.

ACHSANTRIEBSBLOCK FÜR EIN KRAFTFAHRZEUG

An axle drive block for a motor vehicle, comprising a first and a second differential in a driven housing. Both of the differentials are coaxially aligned planetary spur gears, the sun wheels of which are drivably connected to the semiaxes of the first driven axle. The planet wheels of both differentials mesh the joint ring gear of the sun wheels. In order to lock the interaxle differential, the housing is provided with a first striking surface interacting with a second striking surface which is pressed thereto by ball ramps.

DRIVING POWER DISTRIBUTION DEVICE FOR A FOUR-WHEEL-DRIVEN VEHICLE

POWER TRANSMISSION FOR VEHICLES WITH ALL-WHEEL DRIVE

PLURAL OUTPUT PATH TORQUE TRANSMITTING MECHANISM

FOUR-WHEEL DRIVE VEHICLE WITH DRIVE TRANSFER GEAR ASSEMBLY

POWER TRANSMISSION APPARATUS

TRANSFER CASE INCLUDING A TORQUE SPLITTING DIFFERENTIAL

OFFSET TRANSFER CASE

A transfer case (20) for use in a four-wheel drive vehicle is disclosed. The transfer case (20) has an input shaft (44) supported for rotation about a first rotary axis, a first output shaft (32) supported for rotation about a second rotary axis, a second output shaft (42) supported for rotation about a third rotary axis, and a torque transfer arrangement (48) for delivering drive torque from the input shaft (44) to each of the first and second output shafts.

SYNCHRONIZED RANGE SHIFT MECHANISM FOR TRANSFER CASE

A transfer case for a four-wheel drive vehicle having a planetary gear assembly and a synchronized range clutch which can be selectively shifted on-the-move for establishing four-wheel high-range and low-range drive modes.

SYNCHRONIZED RANGE SHIFT MECHANISM FOR TRANSFER CASE

A transfer case for a four-wheel drive vehicle having a planetary gear assembly and a synchronized range clutch which can be selectively shifted on-the--move for establishing four-wheel high-range and low-range drive mode s.

Antrieb

Arrangement with a Planetenr that transmission to the drive of two axles of a motor vehicle.

TRANSMISSION SYSTEM FOR A MOTOR VEHICLE WITH FOUR WHEEL DRIVE.

Four-wheel drive vehicle with drive transfer gear assembly

DRIVE SYSTEM FOR A VEHICLE

CONTROL SYSTEM FOR MULTIPLE DRIVING AXLE VEHICLE

CENTRAL DIFFERENTIAL.

CONTROL DEVICE Of an ACTUATOR OF TRANSFER OF COUPLE HAS MULTIPLE OPERATING PROCESSES.

Système de commande d'un actionneur (5) de transfert de couple pour un véhicule automobile à quatre roues motrices, comprenant des moyens de détermination (1) et un système d'antiblocage des roues, caractérisé en ce qu'il comprend : un moyen de commande (2) d'antiblocage des roues et un moyen de commande (3) de l'actionneur de transfert de couple aptes à coopérer afin d'émettre la commande de transfert de couple à destination de l'actionneur (5) de transfert de couple. A control system for a torque transfer actuator (5) for a four-wheel drive motor vehicle, comprising determining means (1) and an anti-lock system for the wheels, characterized in that it comprises: means wheel anti-lock control device (2) and a torque transfer actuator control means (3) adapted to cooperate to transmit the torque transfer control to the transfer actuator (5) of couple.

Method of clutch control for torque transmission, clutch and differential transmission for its [...] and vehicle provided with same.

Method of clutch control for torque transmission, clutch and differential transmission for its [...] and vehicle provided with same.

full time 4-wheel drive differential

ENHANCEMENT IN TRANSMISSION SYSTEMS FOR MOTOR VEHICLES DRIVING FOUR-WHEELED VEHICLE

Propulsion system for all-wheel drive motor vehicles

The invention relates to a propulsion system for all-wheel drive motor vehicles, having a device for propulsion distribution to the front and the rear differential which transmit the drive output to the wheels assigned at the time, and with a device for coupled, variable distribution of the propulsion forces in the transverse and longitudinal directions of the vehicle depending on the operating situation of the vehicle for influencing the driving behavior, especially for improving the driving agility and driving stability. In the process the rear differential (18) is combined with an overriding drive (22), by means of which the drive torques can be shifted to the rear wheels (20) in alternation in the transverse direction of the vehicle, the rpm ratio or rpm error being dictated by means of the overriding drive (22) at the design point so that at a given curve radius which is assigned to the design point and which does not correspond to the narrowest curve, a reversal of the direction of ...

Method and device for controlling a coupling

A coupling for transmitting torque between two parts has a friction coupling with a chamber including a piston and a rotational member. A pumping and control member is positioned in the chamber and includes at least one shear channel. The pumping and control member is rotatable between two positions such that viscous fluid moves through the channel to load the coupling.

DRIVE ASSEMBLY FOR A FOUR WHEEL DRIVE VEHICLE

The invention relates to a drive assembly for a four wheel drive vehicle with the distributor assembly for distributing driving torque arranged between the front wheels and the rear wheels of a driving axle. A distributor differential (13) and axle differential (15) distribute the driving torque. Both the distributor differential (13) and the axle differential (15) may be at least partially locked via viscous couplings (39, 40) in order to cancel the differential function. I order to achieve the shortest possible design, the two viscous couplings (39, 40) are arranged coaxially one inside the other.

Full-time transfer case with mode shift arrangement

A transfer case is disclosed for a four-wheel drive vehicle. The transfer case includes an interaxle differential and a transfer clutch for controlling speed differentiation and torque biasing across the interaxle differential. A mode shift mechanism is provided for selectively coupling one or more components of the interaxle differential to the input shaft for establishing a full-time four-wheel drive mode, a locked four-wheel drive mode, and a Neutral mode. A controller controls actuation of the transfer clutch and the mode shift mechanism in response to a mode signal indicating which drive mode has been selected by the vehicle operation.

Part-time transfer case with traction control

The present invention provides a motor vehicle traction control system for providing on-demand four-wheel drive under certain tractive and operational conditions. The present invention is operable for disabling the on-demand four-wheel drive feature upon the vehicle operator subsequently shifting into the four-wheel drive mode.

POWER TRANSMITTING STRUCTURE UTILIZING VISCOUS FLUID

A working chamber (19) filled with a silicone oil is provided therein with first resisting plates (21) spline-fitted around the outer circumferential surface of a first transmission shaft (3), and second resisting plates (23) spline-fitted on a second transmission shaft (9). The outermost resisting plates (21, 23) are held at their respective outer sides by a clamp means consisting of annular members (27, 29). These annular members (27, 29) are operatively connected to a piston consisting of the first transmission shaft (3), a side plate (11) and a stopper ring (25). When this piston is thrust-moved, the distance between the annular members (27, 29) decreases to clamp the block, in which the first and second resisting plates (21, 23) are arranged, and thereby bring these resisting plates (21, 23) into close contact with one another so that a set frictional force is obtained.

CAR DRIVING DEVICE HAVING FIRST AND SECOND OPERATION MODE AND ITS OPERATING METHOD

FOUR-WHEEL DRIVE SYSTEM

PURPOSE: To simplify a differential lock mechanism in structure, by selecting a claw clutch, while constituting it so as to be capable of selecting a drive with a center differential being automatically differential-locked with a direct drive method or a viscous coupling, and making it applicable to various driving conditions. CONSTITUTION: A transfer shaft 27, where output of a transmission 3 is inputted, is connected to an output shaft 11 and, in turn, this shaft 11 is connected to a carrier 44 of a planetary gear 40 having a center differential function, while a sun gear 41 is connected to the transfer shaft 27 and a ring gear 42 is connected to a differential gear 24 via gear 31 and 32. In addition, a viscous coupling 45 for differential lock use is installed between the sun gear 41 and the ring gear 42, and a direct-free selecting claw clutch 50 is installed between the carrier 44 and the sun gear 41 or the ring gear 42. And, a 4WD running mode is made so as to be capable of selecting ...

VERFAHREN UND VORRICHTUNG ZUM STEUERN DES RADSCHLUPFES IN EINEM KRAFTFAHRZEUG MIT STAENDIGEM VIERRADANTRIEB.

Mechanism to engage part time drive system in a moving vehicle

The transfer case of a vehicle that can be driven in two-wheel drive or four-wheel drive includes a range speed transmission driveably connected to the output of a multiple speed ratio transmission and adapted to drive the transfer case output shaft. A drive sprocket journalled on the output case is driveably connected by a chain belt to a driven sprocket that is connected to the front driveshaft. The front axle has a differential that transmits power from the front driveshaft to left and right axleshafts when four-wheel drive is selected. Automatic locking hubs driveably connect the front axleshafts to the front wheel assemblies and are adapted to automatically disengage when the front wheels rotate opposite the direction that produced engagement of the locking hubs. The drive sprocket is accelerated from rest to the speed of the output shaft of the transfer case through operation of a magnetic clutch or hydraulic coupling. A hub member engaged with the driven sprocket is moved to a position ...

MECHANISM TO ENGAGE PART TIME DRIVE SYSTEM IN A MOVING VEHICLE

VISCOUS COUPLING

A viscous coupling comprises first and second torque-transmitting members (1, 2) rotatable relative to each other, defining an operating chamber at least partially filled with a viscous fluid; a plurality of first plates (16) engaging and rotationally fast with the first torque-transmitting member; a plurality of second plates (17) interleaved with the first plates, and rotatably mounted on the second torque-transmitting member (2); clutch plates (18) engaging the second torque-transmitting member and disposed alternately with the second plates; a control member (9) operable to compress the clutch plates axially to clamp the second plates between them, and sealing means (14, 15) operable between the first torque-transmitting member and the control member and between the second torque-transmitting member and the control member, at sealing surfaces (9A, 2A) which are substantially of equal effective diameter to one another so that the fluid pressure within the operating chamber does not have ...

DRIVE TRANSFER GEAR ASSEMBLY FOR 4-WHEEL DRIVE VEHICLE

... 1447874 Four-wheel-drive vehicles EATON CORP 4 Oct 1973 [5 Oct 1972] 46459/73 Heading B7H [Also in Division F2] The subject-matter of this Specification is the same as that described in Specification 1,447,875 but the claims are concerned with the provision of first and second clutch means between two gears of the transfer-gear assembly, one clutch means precluding relative rotation of the two gears in one sense only, and the other being engageable to preclude relative rotation in either sense.

Improvements in or relating to vehicle differential transmissions

... 731,938. Differential gearing: freewheel clutches. FERGUSON RESEARCH, Ltd., H. June 8, 1953 [June 9, 1952; Sept. 24, 1952; May 14, 1953], Nos. 14442/52, 23910/52 and 13470/53. Class 80 (2). [Also in Group XXXI] A motor vehicle transmission system comprises a power input member 7, Fig. 2, power output members 11, 12 driving respectively front and rear road wheels, and gearing 10 between these members permitting a limited range of free differential action between the output members and effective automatically to lock the output members together when either tends to overrun the other beyond a predetermined rate, e.g. when a road wheel tends to spin &c. In the form shown in Fig. 2, planet gears 17A on a driving carrier 17 mesh bevel sun gears 18F, 18R, the former being geared through a train 19F, 20F to the overrunning part of a freewheel clutch 23 connected to the propeller shaft 11 which transmits drive through bevel gearing 21F to the crown wheel of a known differential gear, not described ...

A DRIVE ARRANGEMENT FOR A FOUR-WHEEL DRIVE MOTOR VEHICLE

FOUR-WHEEL DRIVE VEHICLE WITH DRIVE TRANSFER GEAR ASSEMBLY

... 1447876 Four-wheel-drive vehicles EATON CORP 4 Oct 1973 [5 Oct 1972] 15631/76 Divided out of 1447875 Heading B7H [Also in Division F2] The subject-matter of this Specification is the same as that described in the parent Specification 1,447,875 but the claims relate to the provision of a one-way clutch which precludes relative rotation in one sense between the two output gears of the transfer-gear assembly but allows relative rotation between those gears in the opposite sense.

Improvements in or relating to centre differential gear units

... 1,126,805. Differential gear. HARRY FERGUSON RESEARCH Ltd. 11 Oct., 1965 [20 Oct., 1964], No. 42676/64. Heading F2D. [Also in Division B7] A centre differential gear for a four wheel drive vehicle, comprises a planet carrier 12 driven by input shaft 50 and a planet wheel 14 meshing with sun 20 driving front output shaft via gears 24, 38 and shaft 40, and with a ring gear 18 integral with the rear output shaft 30; the gears 24, 38 are a step-up ratio so that in use with the vehicle driven, the sun 20 rotates slower than ring gear 18 and carrier 12. A lock-up clutch comprises a shroud 52 secured to sun 20 through shaft 22 and a collar 54 keyed to input shaft 50 and thus carrier 12; a presser 58 is connected by a helical thread 56 to collar 54 and carrier clutch plates 64 interleaved with plates 66 carried by shroud 52. A clutch backing plate 68, splined to collar 54, is limited in axial movement by three radial plungers 70 having inclined abutment with a sleeve 72 splined to the input shaft ...

LOCKING DEVICE FOR A DIFFERENTIAL BETWEEN THE TWO DRIVE WHEELS OF A MOTOR VEHICLE

DRIVE ARRANGEMENT FOR MOTOR VEHICLES WITH TWO TRIEBACHSEN

VERTEILERGETRIEBE MIT KOAXIALEN ABTRIEBSWELLEN UND EINEM SCHALTBAREN GRUPPENGETRIEBE

VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINER KUPPLUNG

ADJUSTABLE ONE VISKOKUPPLUNG

ADAPTER FOR TRANSFER CASES

PLURAL OUTPUT PATH TORQUE TRANSMITTING MECHANISM

PLURAL OUTPUT PATH TORQUE TRANSMITTING MECHANISM

Systems of transmission for motor vehicles

Method and device for activating a clutch, and automobile with the same coupling.

CONVEY HAS DIFFERENTIAL UNIT

DIFFERENTIAL GEARING

CONTROL SYSTEM OF AN ACTUATOR TORQUE TRANSFER WITH MULTIPLE MODES OF OPERATION.

Method of clutch control for torque transmission, clutch and differential transmission for its [...] and vehicle provided with same.

Method of clutch control for torque transmission, clutch and differential transmission for its [...] and vehicle provided with same.

CONJUNTO DE ENGRENAGEM TRANSMISSORA PROPORCIONADORA DE TORQUE

Drive power transmission apparatus

A transmission apparatus (3) outputs drive power of a motor, from a speed changing mechanism (5, 7), via a sub-shaft (25), a power distribution apparatus (4) transmits rotation of an input end member (67) linked to the sub-shaft (25), via output shafts (83, 85), to the front-wheel end and the rear-wheel end, and the sub-shaft (25) and the power distribution apparatus (4) are disposed in an axially overlapping relationship.

Torque biased differential mechanism

A four wheel drive vehicle has a torque biased inter-axle differential comprising a fluid coupling which is driven by a planetary gear set which multiplies the speed difference between the outputs of the differential.

Adapter for transfer cases

.СИСТЕМА МОНТАЖА ДИФФЕРЕНЦИАЛА

Kontrollsystem für die Momentaufteilung in einem Fahrzeug mit Vierradantrieb.

MITTENDIFFERENTIAL FUER EIN FAHRZEUG MIT VIERRADANTRIEB

Limiting differential

A limiting differential comprises first and second planetary pinions 52, 54 having helical teeth with different helix angles which produces thrust forces that operate multi-plate clutch 60 so as to produce a differential limiting torque between front and rear wheels. First sun gear 51 is mounted on transmission output shaft 15 and meshes with first pinion 52 mounted, by member 58, on carrier 56 which transmits torque, from output shaft 15, to front drive shaft 16 via transfer drive gears 17, 18. Torque is transmitted to rear drive shaft 20 by second sun gear 53 which is meshed with second pinion 54 that is integrally connected to first pinion 52 and thereby to first sun gear 51. The carrier 56 frictionally engages rear drive shaft 20 via clutch 60 which applies an initial friction torque generated by pressure produced by disc spring 63 acting on clutch discs 61, 62.

Method and device for controlling a coupling

Improvements relating to high performance motor vehicles of lightweight construction

... 1,010,322. Motor vehicles. HARRY FERGUSON RESEARCH Ltd. May 9, 1962 [May 13, 1961], No. 17508/61. Heading B7H. [Also in Division F2] In a high performance vehicle of lightweight construction, e.g. a racing motor car, having a four-wheeled drive including a differential between a drive to the rear roadwheels and a drive to the front roadwheels, and means for limiting the differential action, the front propeller shaft extends to the front differential past one side of the engine and the rear propeller shaft extends to the rear differential past the same side of the driver's seat. As shown in Fig. 2, the vehicle is provided with an engine 10 offset and tilted to accommodate carburetters 21, and a change speed gear and differential unit 13 from which extend driving shafts 11 and 12 to the differential gears 14 and 15 in the rear and front axles, respectively. The change speed and differential gear unit 13, Fig. 5, comprises four forward gears, a reverse gear, a differential gear 70, 71 driven ...

POWER TRANSMITTING STRUCTURE

Improvements in and relating to motor-vehicle transmission systems

... 860,546. Differential gear; change-speed gear; positive clutches. FERGUSON RESEARCH Ltd., H. July 8, 1957 [July 24, 1956], No. 22808/56. Class 80 (2). [Also in Group XXXI] A motor vehicle driving gear of the kind in which the engine power is transmitted to the front and rear road wheels and in which a differential gear 25 is interposed between front and rear propeller shafts 22F, 22R includes a reversible shaft 30 having a driving connection 27, 31 with the differential gear, and a pair of one-way clutches 60, 70 interposed between the shaft 30 and one of the propeller shafts 22R to limit the differential action, the over-running member of the clutch 70 being rotated by the reversible shaft 30 while the overrunning member of the clutch 60 is rotated by the propeller shaft 22R. Locking or skidding of the rear wheels or spinning of the front wheels is prevented by the clutch 60 which couples the shaft 30 to the shaft 22R through gears 63, 64 when the speed of the shaft 22R falls in relation ...

FOUR-WHEEL-DRIVE VEHICLES

... 1333878 Clutches; differential gearing GKN TRANSMISSIONS Ltd 23 Feb 1972 [2 March 1971] 5847/71 Headings F2C and F2D [Also in Division B7] A coupling combination combined with differential gearing between front and rear wheels of a four-wheel drive vehicle, comprises a viscous shear coupling 13 in parallel with a slip clutch 45, 46 between driving shaft 10 and casing 11, the slip clutch being engaged (or, in an alternative embodiment, Fig. 6, not shown, a further viscous coupling adjusted) when the torque transmitted by the coupling 13 exceeds a predetermined value, A torque responsive coupling comprising caged rollers 37 between cam recesses 35 (see Fig. 2) of the rotor 18 of the coupling 13 and a spring (40) biased plate 39 fast with the slip clutch presser plate 43, splined to the shaft 10, causes engagement of the slip clutch 45, 46 when rollers 37 move up the cams 35 to move plate 43 on the torque being transmitted through the torque responsive coupling (caused by drag in coupling ...

Improvements in propulsion systems for vehicles

... 728,206. Differential gear. GYREACTA TRANSMISSIONS, Ltd. Aug. 13, 1951 [Aug. 23, 1950], No. 29713/53. Divided out of 728,122. Class 80 (2). [Also in Group XXXI] A vehicle propulsion system comprises means for driving both the front and rear road wheels of the vehicle via a shaft which transmits the whole of the driving torque, means for applying braking effort to both the front and rear road wheels by the application of reverse torque to the shaft, the system being provided with means whereby a major part of the forward driving torque in the shaft is applied to the rear road wheels and a minor part of the forward driving torque is applied to the front road wheels, and also with means whereby a major part of the reverse torque in the shaft is applied to the front road wheels and a minor part of this torque is applied to the rear load wheels. In the arrangement according to Fig. 1, in which planetary gear trains I and II are provided between an intermediate shaft 82, which is or may be, coupled ...

DRIVE ARRANGEMENT FOR ALLWHEEL-DRIVEN MOTOR VEHICLES

PROCEDURE AND DEVICE FOR THE CONTROLLING OF A CLUTCH

WITH A BRAKE MECHANISM PROVIDED DIFFERENTIAL FOR MOTOR VEHICLES

DRIVE ARRANGEMENT FOR MOTOR VEHICLES WITH TWO TRIEBACHSEN

LOCKING DEVICE FOR A DIFFERENTIAL BETWEEN THE TWO DRIVE WHEELS OF A MOTOR VEHICLE

VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINER KUPPLUNG

VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINER KUPPLUNG

SCHALTBARE VISKOKUPPLUNG

VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINER KUPPLUNG

ANTRIEBSANORDNUNG FUER ALLRADGETRIEBENE KRAFTFAHRZEUGE

ANTRIEBSANORDNUNG FUER KRAFTFAHRZEUGE MIT ZWEI TRIEBACHSEN

ANTRIEBSANORDNUNG FUER EIN KRAFTFAHRZEUG MIT ZWEI TRIEBACHSEN

FRICTION COUPLING

PART TIME ON-DEMAND FOUR WHEEL DRIVE VEHICLE TRANSAXLE WITH VISCOUS CLUTCH

A dual bevel gear differential transaxle assembly for a front transverse engine vehicle with front and rear pairs of road wheels providing a part-time on demand four wheel drive system. Interaxle and front wheel bevel gear differentials are aligned on a transverse axis. The differentials are connected by a side gear shaft and inner and outer side gear sleeves concentric about the side gear shaft. The interaxle differential achieves front axle to rear axle differentiation while the front wheel differential provides differentiation for the front pair of road wheels. The dual differential transaxle assembly includes viscous fluid clutch means providing an automatic limited slip condition of the interaxle differential when there is a predetermined difference in speed or rpm between the front and rear pair of road wheels.

DRIVE TRANSFER GEAR ASSEMBLY FOR FOUR-WHEEL DRIVE VEHICLE

SYSTEM FOR CONTROLLING A TORQUE TRANSFER ACTUATOR WITH MULTIPLE MODES OF OPERATION

A system for controlling a torque transfer actuator for a four-wheel drive motor vehicle, including: a determining mechanism and a system for preventing the wheels from locking; a controller preventing the wheels from locking; and a controller for the torque transfer actuator, configured to interact to transmit a torque transfer command destined for the torque transfer actuator. 116-. (canceled)17. A system for controlling a torque transfer actuator for a four-wheel drive motor vehicle , comprising:determination means and a wheel antilock system; anda wheel antilock control means and a control means of the torque transfer actuator, configured to cooperate to emit a torque transfer command to the torque transfer actuator.18. The control system as claimed in claim 17 , wherein the wheel antilock control means is configured to determine a wheel antilock command as a function of the torque transfer command received from the control means of the torque transfer actuator; andthe control means of the torque transfer actuator is configured to determine the torque transfer command as a function of the wheel antilock command.19. The control system as claimed in claim 17 , further comprising:a manual control component connected to the control means of the torque transfer actuator; andthe manual control component is configured to occupy a plurality of positions and to be manipulated by a driver of the vehicle, and is configured to emit a signal according to the position selected by the driver.20. The control system as claimed in claim 17 , further comprising:means for determining a driving situation, configured to emit a control signal to a driven switch as a function of signals received from the determination means and the torque transfer command received from the control means of the torque transfer actuator; anda driven switch configured to emit a wheel lock detection signal.21. The control system as claimed in claim 20 , further comprising:a first wheel lock detection means ...

SIDE-BY-SIDE ALL-TERRAIN VEHICLE

An all-terrain vehicle includes a frame including a front frame part and a separate rear frame part connected to the front frame part via frame joints. A surface is supported by one of the front frame part and the rear frame part. An engine is supported by the rear frame part and is positioned behind the seating surface. Front wheels operably coupled to the front frame part are drivingly coupled to the engine via a front drive unit. Rear wheels operably coupled to the rear frame part are drivingly coupled to the engine via a rear drive unit. A brake system is mounted to the frame and includes front wheel brakes and rear wheel brakes. The brake system further includes a brake modulator and a master brake cylinder operably connected to the brake modulator. The brake modulator is mounted to the front frame part. 1. An all-terrain vehicle comprising:a frame including a front frame part and a rear frame part, the rear frame part is separate from and connected to the front frame part via frame joints which are spaced laterally from one another in a width direction of the vehicle;a seating surface supported by one of the front frame part and the rear frame part;an engine supported by the rear frame part, the engine is positioned behind the seating surface;left and right front wheels operably coupled to the front frame part and drivingly coupled to the engine via a front drive unit;left and right rear wheels operably coupled to the rear frame part and drivingly coupled to the engine via a rear drive unit; anda brake system mounted to the frame and including front wheel brakes for the respective left and right front wheels and rear wheel brakes for the respective left and right rear wheels, the brake system further including a brake modulator and a master brake cylinder operably connected to the brake modulator, the brake modulator mounted to the front frame part.2. The vehicle according to claim 1 , wherein the brake modulator is positioned on a lateral side of the front ...

CONTROL SYSTEM AND METHOD OF CONTROLLING A DRIVELINE

Some embodiments of the present invention provide a control system configured to control a driveline of a motor vehicle to operate in a selected one of a plurality of configurations, the system comprising at least one sensor for sensing an environment ahead of the vehicle and generating a sensor signal in dependence on the environment, the system being configured to cause the driveline to operate in a configuration selected in dependence at least in part on the sensor signal. 125-. (canceled)26. A control system configured to control a driveline of a motor vehicle to operate in a selected one of a plurality of configurations , the system comprising:at least one sensor for sensing an environment ahead of the vehicle and generating a sensor signal in dependence on the environment ahead;a controller configured to cause the driveline to operate in a first configuration in which the driveline is configured such that a first group of one or more wheels and in addition a second group of one or more wheels are arranged to be driven or a second configuration in which the first group of one or more wheels and not the second group of one or more wheels are arranged to be driven wherein the driveline is caused to operate in the first configuration or the second configuration in dependence, at least in part, on the sensor signal,wherein the first group of one or more wheels or the second group of one or more wheels comprises a plurality of wheels, the controller being configured to calculate a predetermined amount of locking torque between at least one pair of wheels of the plurality of wheels of the first group or the plurality of wheels of the second group in dependence at least in part on the sensor signal and configured to cause the driveline to establish the predetermined amount of locking torque between the at least one pair of wheels of the plurality of wheels of the first group or the plurality of wheels of the second group.27. A control system according to claim 26 , ...

SYSTEM AND METHOD FOR INCREASING REGENERATIVE BRAKING IN A REAR-WHEEL-DRIVE-BASED PLATFORM WITH FOUR-WHEEL-DRIVE CAPABILITY

A vehicle includes a power source configured to provide drive torque, a front axle, a rear axle, and a transfer case configured to distribute drive torque from the power source between the front axle and the rear axle. The vehicle additionally includes a clutch arranged between the front axle and the transfer case. The clutch has a disengaged state and an engaged state drivingly coupling the transfer case and the front axle. The vehicle also includes a regenerative braking system configured to, in response to a braking request, provide regenerative braking torque to the rear axle. The vehicle further includes a controller. The controller is configured to, in response to a braking request and the clutch being in the disengaged state, control the clutch to shift into the engaged state to couple the regenerative braking system to the front axle and provide regenerative braking torque to the front axle. 1. A vehicle comprising:a power source configured to provide drive torque;a front axle;a rear axle;a transfer case configured to distribute drive torque from the power source between the front axle and the rear axle;a clutch arranged between the front axle and the transfer case, the clutch having an engaged state and a disengaged state, wherein in the engaged state the clutch drivingly couples the transfer case and the front axle;a regenerative braking system configured to, in response to a braking request, provide regenerative braking torque to the rear axle; anda controller configured to, in response to a braking request and the clutch being in the disengaged state, control the clutch to shift into the engaged state to couple the regenerative braking system to the front axle and provide regenerative braking torque to the front axle.2. The vehicle of claim 1 , further comprising first and second front wheels arranged on the front axle claim 1 , a front differential drivingly coupling the transfer case and the front axle claim 1 , a first disconnect arranged between the ...

Differential assembling system

FIELD: machine building. SUBSTANCE: invention relates to connection of differential with engine. Vehicle power transmission comprises an engine comprising a first fixing device defining first coupled surfaces, and a differential connected to the transfer box by means of the drive shaft. Differential comprises second fixing device defining second conjugated surfaces. First and second fixing devices interact so that the first and second conjugated surfaces are located opposite each other, connecting the engine with the differential. Fastening element is arranged inside engine and differential. EFFECT: simplified design of connection of differential with engine. 19 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 686 782 C2 (51) МПК B60K 17/16 (2006.01) F16H 57/025 (2012.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B60K 17/16 (2019.02); F16H 57/025 (2019.02) (21) (22) Заявка: 2016150502, 21.12.2016 (24) Дата начала отсчета срока действия патента: 21.12.2016 30.04.2019 (73) Патентообладатель(и): Форд Глобал Текнолоджиз, ЛЛК (US) 19.01.2016 US 15/000,387 (43) Дата публикации заявки: 21.06.2018 Бюл. № 18 (56) Список документов, цитированных в отчете о поиске: US 5195608 A, 23.03.1993. US 5303798 A, 19.04.1994. RU 2126507 C1, 20.02.1999. US 5062822 A, 05.11.1991. (45) Опубликовано: 30.04.2019 Бюл. № 13 2 6 8 6 7 8 2 R U (54) СИСТЕМА МОНТАЖА ДИФФЕРЕНЦИАЛА (57) Реферат: Изобретение относится к соединению дифференциала с двигателем. Силовая передача транспортного средства содержит двигатель, содержащий первое фиксирующее приспособление, определяющее первые сопряженные поверхности, и дифференциал, соединенный с раздаточной коробкой посредством ведущего вала. Дифференциал содержит второе фиксирующее приспособление, определяющее вторые сопряженные поверхности. Стр.: 1 C 2 C 2 Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", М.В. Хмара 2 6 8 6 7 8 2 Приоритет(ы): (30) Конвенционный приоритет: R U Дата ...

Power transmission device

Vehicle driving force transmission device

Hydraulic coupling assembly

본 발명은 자동차 내 액츄에이터를 구동하기 위한 유압 시스템(2)에 관한 것이다. 상기 유압 시스템은 액츄에이터에 작용하는 하나 이상의 유압식 구동 유닛(3)과, 펌프 하우징(9) 내에 움직일 수 있게 장착된 피스톤(8)을 구비한 하나 이상의 피스톤 펌프(7)를 포함하며, 상기 피스톤(8)의 운동에 의해 구동 유닛(3)에 공급하기 위한 유압이 생성된다. 회전축(A) 및 편심체(13)를 구비한 구동 샤프트(12)가 제공되며, 상기 편심체(13)는 하나 이상의 피스톤 펌프(7)의 피스톤(8)에 작용하며, 상기 구동 샤프트(12)의 회전 시 유압이 생성된다. 본 발명은 본 발명에 따른 유압 시스템(2)을 구비한 클러치 장치와도 관련된다. The present invention relates to a hydraulic system (2) for driving an actuator in an automobile. The hydraulic system comprises at least one hydraulic drive unit (3) acting on an actuator and at least one piston pump (7) having a piston (8) movably mounted in a pump housing (9) The hydraulic pressure for supplying to the drive unit 3 is generated. There is provided a drive shaft 12 having a rotational axis A and an eccentric body 13 which acts on the piston 8 of one or more piston pumps 7 and which is connected to the drive shaft 12 The hydraulic pressure is generated. The invention also relates to a clutch device with a hydraulic system (2) according to the invention.

Transmission car with two leading axles

Hydraulic control device for driving force distribution device

Differential bypass driving one set of wheels through a secondary gearbox

A differential centre bypass, for a four wheel drive vehicle, has an input attached to an output shaft of an engine and an output drive shaft which drives a rear differential through a clutch and a primary gearbox. Another output of the differential bypass drives a front differential through a secondary gearbox. Recombination of the outputs of the bypass differential may be achieved using wheels of the vehicle or this could be achieved using (bevel) cogs. On selecting reverse the secondary gearbox should switch into reverse as well as the primary gearbox. This results in a front:rear torque of -50:-50, or matching the weights over axles. The simplest embodiment is to electrically change the secondary gearbox, based on reversing light circuitry. The primary gearbox, secondary gearbox and cogs may be housed within a casing of the bypass differential and traction control between axles may be augmented using a braking system. The front and rear differentials may be may be non-slip or limited-slip while the bypass differential is free.

Drive power transmission device

A drive power transmission device includes an input carrier having a front portion for receiving drive power from a drive source and a tubular rear portion, a planetary gear mechanism having a sun gear disposed coaxially in the tubular portion of the input carrier, a plurality of planet gears meshing with the sun gear and rotatably supported on a periphery of the tubular portion, and a ring gear mounted concentrically on the tubular portion and meshing with the planet gears, a first output shaft coupled to and supporting the sun gear, an intermediate tubular member connectable to the first output shaft and a rear end of the tubular rear portion of the input carrier and disposed concentrically with the first output shaft, an outer tubular member connectable to the ring gear and disposed concentrically with the intermediate tubular member, a viscous shear coupling mechanism interconnecting the outer tubular member and the intermediate tubular member, and a second output shaft coupled to and supporting the outer tubular member. The viscous shear coupling mechanism comprises two groups of mutually interleaves plates disposed in a fluid chamber defined between the intermediate tubular member and the outer tubular member and filled with a fluid and fixedly fitted over the intermediate tubular member and in the outer tubular member.

Power divider for motor vehicles propelling at two axles, has differential housings which are propelled by speed-change speed gear box

The power divider (16) has differential housings (20,22) which are propelled by a speed-change speed gear box (10).The differential housing has multiple differential gear wheels (24,26) which engage with an axle gear wheel (42).The drive shafts (38,44) are connected or formed single piece with the axle gear wheel.

Motor vehicle upgrades

Improvements to motor vehicles.

TRANSMISSION BOX WITH POWER TAKE-OFF

DEVICE FOR ADJUSTING AN ANGULAR SPEED DIFFERENCE BETWEEN TWO ROTATING PARTS

Coupling control method for transmission of torques, coupling and differential transmission for its implementation and vehicle thus equipped.

L'accouplement comprend un embrayage à friction (12) dont les éléments (15, 17) sont reliés à des pièces (14, 20; 16, 24) tournant l'une par rapport à l'autre, et qui peut être sollicité par un piston (19) qui délimite dans un boîtier rotatif (20) une chambre de pression (21) remplie d'un liquide visqueux et reliée à un réservoir (26), un corps de rotation (22) capable de tourner par rapport audit boîtier étant agencé dans ladite chambre de pression (21). La pression est produite par cisaillement d'un liquide visqueux qui se trouve dans au moins un canal de cisaillement (38) fermé qui s'étend entre deux extrémités dans la direction circonférentielle, lors d'une rotation relative du corps de rotation (22) par rapport à la chambre de pression (21), et l'admission/prélèvement de liquide vers/depuis le canal de cisaillement (38), sont pilotés en fonction de la direction de rotation relative des pièces qui tournent l'une par rapport à l'autre. The coupling comprises a friction clutch (12), the elements (15, 17) of which are connected to parts (14, 20; 16, 24) rotating relative to one another, and which can be acted upon by a piston (19) which delimits in a rotary housing (20) a pressure chamber (21) filled with a viscous liquid and connected to a reservoir (26), a rotation body (22) capable of rotating relative to said housing being arranged in said pressure chamber (21). The pressure is produced by shearing of a viscous liquid which is in at least one closed shear channel (38) which extends between two ends in the circumferential direction, during a relative rotation of the rotation body (22) relative to the pressure chamber (21), and the intake / withdrawal of liquid to / from the shear channel (38), are controlled as a function of the relative direction of rotation of the parts which rotate with respect to the other.

Improvements to vehicle transmissions

Coupling control method for transmission of torques, coupling and differential transmission for its implementation and vehicle thus equipped.

FOUR-DRIVE TRANSMISSION DEVICE

DISPOSITIF DE TRANSMISSION A QUATRE ROUES MOTRICES COMPRENANT EN SORTIE DE BOITE DE VITESSES 15 UN PIGNON D'ATTAQUE 1 ENTRAINANT UNE COURONNE EXTERIEURE 2, QUI COMPORTE UNE DENTURE INTERIEURE QUI EST LA COURONNE 4 DU DIFFERENTIEL CENTRAL 16, DONT LE PLANETAIRE 6 COMMANDE L'UN DES ESSIEUX 17, ET DONT LE PORTE-SATELLITES 18 COMMANDE L'AUTRE ESSIEU, CARACTERISE EN CE QU'UN SYSTEME AUTO-FREINE EST DISPOSE ENTRE LE PORTE-SATELLITES 18 ET LE PLANETAIRE 6 DE MANIERE A TRANSFERER AUTOMATIQUEMENT UNE PARTIE DE L'ENERGIE DE L'ESSIEU EN PERTE D'ADHERENCE SUR L'AUTRE ESSIEU. FOUR-WHEEL DRIVE TRANSMISSION DEVICE INCLUDING, AT THE GEARBOX OUTPUT 15, A DRIVE PINION 1 DRIVING AN EXTERNAL CROWN 2, WHICH INCLUDES AN INTERNAL TEETH WHICH IS CROWN 4 OF THE CENTRAL DIFFERENTIAL 16, OF WHICH THE PLANETARY 6 CONTROLS AXLES 17, OF WHICH THE SATELLITE CARRIER 18 CONTROLS THE OTHER AXLE, CHARACTERIZED IN THAT A SELF-BRAKING SYSTEM IS PROVIDED BETWEEN THE SATELLITE CARRIER 18 AND THE PLANETAR 6 SO AS TO AUTOMATICALLY TRANSFER PART OF THE ENERGY LOSS OF GRIP ON THE OTHER AXLE.

Vehicle drive system having first and second operating modes and method of operating same

A drive system for a vehicle having a set of front wheels and a set of rear wheels drivable from a source of power includes a transfer case having first and second operating states, a front drive mechanism having corresponding first and second operating states and a control system which can be actuated to change the operating mode of the vehicle drive system between a two-wheel drive mode and a four-wheel drive mode by changing the operating states of the transfer case and the drive assembly in proper sequence. The transfer case includes a conventional interaxle differential to permit general vehicle operation in the four-wheel drive mode. The transfer case also includes a chain and sprocket assembly which can be selectively engaged to control the transfer of drive torque to the front wheels. The engagement of the chain and sprocket assembly is controlled by a shiftable clutch collar within the transfer case. The front drive mechanism includes a front axle differential which interconnects a pair of shaft assemblies. One of the shaft assemblies includes an axle shaft having inner and outer sections which are selectively coupled by a second shiftable clutch collar. Both of the clutch collars are shifted by means of vacuum motors which are interconnected to shift the clutch collars in the proper sequence. Actuation of the vacuum motors is under operator control through a vacuum switch. In changing from the two-wheel drive mode to the four-wheel drive mode, the front axle vacuum motor is first actuated to couple the inner and outer sections of the axle shaft, and then the transfer case vacuum motor is actuated to transfer drive torque to the front wheels through the chain and sprocket assembly. The order is reversed in changing from the four-wheel drive mode to the two-wheel drive mode.

Drive assembly for four-wheel drive vehicle

Hydraulic arrangement for a power-operated actuating unit

Die Erfindung betrifft eine Hydraulikanordnung 2 zum Betätigen einer Stelleinheit in einem Kraftfahrzeug. Die Hydraulikanordnung umfaßt zumindest eine hydraulische Betätigungseinheit 3, die auf die Stelleinheit einwirkt, sowie zumindest eine Kolbenpumpe 7 mit einem Kolben 8, der in einem Gehäuse 9 beweglich einsitzt, wobei durch Bewegung des Kolbens 8 hydraulischer Druck zum Beaufschlagen der Betätigungseinheit 3 aufgebaut wird. Es ist eine Antriebswelle 12 mit einer Drehachse A und einem Exzenter 13 vorgesehen, wobei der Exzenter 13 auf den Kolben 8 der zumindest einen Kolbenpumpe 7 einwirkt und bei Drehung der Antriebswelle 12 hydraulischen Druck aufbaut. Die Erfindung betrifft weiter eine Kupplungsanordnung mit einer erfindungsgemäßen Hydraulikanordnung 2. The invention relates to a hydraulic arrangement 2 for actuating an actuating unit in a motor vehicle. The hydraulic arrangement comprises at least one hydraulic actuating unit 3, which acts on the setting unit, and at least one piston pump 7 with a piston 8, which is seated in a movable housing 9, wherein hydraulic pressure for applying the actuating unit 3 is established by movement of the piston 8. It is a drive shaft 12 is provided with a rotation axis A and an eccentric 13, wherein the eccentric 13 acts on the piston 8 of the at least one piston pump 7 and 12 builds up hydraulic pressure upon rotation of the drive shaft. The invention further relates to a coupling arrangement with a hydraulic arrangement 2 according to the invention.

Viscous shear couplings

Viscous shear couplings for controlling the action of an interaxle or interwheel differential gear in a vehicle transmission are described. The couplings comprise a pack of interleaved annular plates which are free to float axially in an annular enclosure containing a viscous liquid. The enclosure incorporates a spring-loaded piston shiftable to vary the enclosure volume. The quantity of viscous liquid, in the range 85% to 100% of the minimum volume at ambient temperature, and the spring strength are chosen to give a predetermined pressure build-up within the enclosure with rise in temperature during shearing of the viscous liquid to tailor the torque-transmitting characteristics of the coupling to particular needs.

Patent DE3703354C2

Drive system for a vehicle

A torque transfer mechanism intended to receive an input torque from a motor and transmit it to a plurality of drive shafts, characterized by a box member intended to be driven by an input member; drive means connecting said inlet member and said box member; a pair of output shafts driven by said box member, said output shafts having a common center axis that is parallel to and laterally offset from said center axis of said input member; a bevel gear system connected between said box and said output shafts to transmit the torsional force to the latter, and allow relative rotation between them; at least one clutch positioned between said box and said output shafts, said clutch including at least one friction surface associated with said box and at least one friction surface associated with said shaft; incorporating loading means that pushes said friction surfaces into an initial friction coupling. (Machine-translation by Google Translate, not legally binding)

Transfer case e.g. Torsen type transfer case, for motor vehicle, has toothed wheels engaged with helical axle wheels, and output shaft connected and/or formed with helical axle wheel into single piece

The case has differential cases (20, 22) driven by a gearbox (10), and differential toothed wheels (24, 26) placed in the differential cases and engaged with respect to each other. The toothed wheels are engaged with helical axle wheels (34, 42). An output shaft (44) is connected and/or formed with the helical axle wheel (42) into a single piece. The output shaft has a free end connected to a transmission shaft.

Transmission for four-wheel drive vehicles

The transmission of the present invention includes a multi-speed geartrain comprised of an input shaft, a mainshaft, and a plurality of constant-mesh gearsets arranged for selectively coupling the mainshaft to the input shaft for driven rotation at various speed ratios. The mainshaft can be selectively coupled to the power transfer arrangement for establishing two alternative power transmission routes. In particular, the range shift mechanism is provided for establishing a high-range power transmission route and a low-range power transmission route from the mainshaft to a quill shaft which, in turn, drives the interaxle differential. The torque delivered by the quill shaft is split by the interaxle differential between the front and rear drivelines to establish the full-time four-wheel high-range and low-range drive modes. Optionally, the torque transfer apparatus can be provided for controlling speed differentiation across the interaxle differential or in place of the interaxle differential for on-demand four-wheel drive operation. The torque transfer apparatus can be a speed-sensitive device or an electronically-controlled transfer clutch.

Patent DE3690052T1

Four-wheel drive system

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Four-wheel drive transmission device

Dispositif de transmission à quatre roues motrices, caractérisé en ce qu'il comporte un arbre secondaire (2), qui est lié à l'entrée du différentiel central (4); une sortie dudit différentiel central (4) entraînant le pignon d'attaque (3) de l'essieu avant coaxial et se montant à l'intérieur dudit arbre secondaire (2), ledit pignon d'attaque entraînant une couronne (29) solidaire du différentiel avant; l'autre sortie du différentiel central (4) entraînant un arbre de renvoi arrière (15) coaxial et dans le prolongement dudit pignon d'attaque (3). Four-wheel drive transmission device, characterized in that it comprises a secondary shaft (2), which is linked to the input of the central differential (4); an outlet from said central differential (4) driving the drive pinion (3) of the coaxial front axle and mounting inside said secondary shaft (2), said drive pinion driving a crown (29) integral with the front differential; the other output of the central differential (4) driving a rear deflection shaft (15) coaxial and in the extension of said drive pinion (3).

Hydraulic assembly for a force-operated setting unit

The disclosure relates to a hydraulic assembly for actuating a setting unit in a motor vehicle. The hydraulic assembly comprises at least one hydraulic actuating unit which acts on the setting unit, as well as at least one piston pump with a piston which is displaceably positioned in a housing, wherein, when the piston moves, there is built up a hydraulic pressure for loading the actuating unit. There is provided a driveshaft with an axis of rotation and an eccentric, wherein the eccentric acts on the piston of the at least one piston pump and, when the driveshaft rotates, builds up a hydraulic pressure. Furthermore, the disclosure relates to a coupling assembly with an inventive hydraulic assembly.

Transfer case for at least two axes driven vehicles

Die Erfindung betrifft ein Verteilergetriebe für zumindest an zwei Achsen angetriebene Kraftfahrzeuge, mit einem über ein Geschwindigkeits-Wechselgetriebe angetriebenen Ausgleichsgehäuse, das in einem Getriebegehäuse drehbar gelagert ist und in dem mehrere Ausgleichszahnräder angeordnet sind, die mit zwei abtreibenden Achszahnrädern kämmen, wobei das eine Achszahnrad mit einer in dem Getriebegehäuse drehbar gelagerten Abtriebswelle trieblich verbunden und an ihrem aus dem Getriebegehäuse herausgeführten Ende mit einer Kardanwelle trieblich verbindbar ausgeführt ist. Erfindungsgemäß ist die Abtriebswelle (44) einstückig mit dem Achszahnrad (42) hergestellt und bevorzugt konstuktiv so ausgeführt ist, dass sie durch einen das Achszahnrad (42) im Ausgleichsgehäuse (20, 22) haltenden Flansch (22a) des Ausgleichsgehäuses (20, 22) hindurch montierbar ist. The invention relates to a transfer case for at least two-axis driven vehicles, with a driven via a speed change gearbox differential housing which is rotatably mounted in a transmission housing and in which a plurality of differential gears are arranged, which mesh with two aborting axle gears, wherein the one axle with a drive shaft rotatably mounted in the transmission housing and drivingly connected at its end led out of the transmission housing with a propeller shaft is designed drivably connected. According to the invention, the output shaft (44) is made in one piece with the axle gear (42) and is preferably designed so that it is held by a flange (22a) of the differential housing (20, 22) holding the axle gear (42) in the differential housing (20, 22). can be mounted therethrough.

Power transmission gear box to drive plural axles

A power transmission gear box for automatically converting single axle drive into 2-axle drive when needed or preferably 2-axle drive into 3-axle drive from a single power source, comprises in the latter case an input 5, a first output 33 for a first axle of a vehicle, a second output 37 to drive a second axle, means 31 to split the power from the input between the first and second outputs in accordance with a predetermined ratio, and a further output 53 for the third axle, provided with drive means (sprocket wheel 51) rotatable on a shaft 55 for driving the further output 53, a driving connection (sprocket wheel 47 and chain 49) between the said drive means and the output for the first axle of the vehicle, and an automatic clutch 57 for drivingly engaging said drive means and said shaft for the further output when the difference in the speed of rotation of the first and further outputs 33, 53 exceeds a predetermined value. Preferably, there is a manual clutch 27 for engaging the input, and the differential gearing 31 for distributing the power between the first and second outputs comprises an epicyclic gear train to distribute the power in the ratio of 2:1. <IMAGE>

Power distribution device for four-wheel drive vehicle

Method of and device for controlling a coupling

A coupling for transmitting torque between two parts has a friction or viscous coupling. The friction coupling is loaded by a piston and rotational member. A shear channel is formed between faces such that viscous fluid contained in the chamber is moved along the shear channels wherein the piston is loaded as a result of shear forces.

CONTROL OR CONTROL COUPLING

Drive arrangement for a four-wheel drive motor vehicle

Powertrain for vehicles with all-wheel or front-wheel drive and an overall transmission arranged lengthways to the direction of travel

Transmission mechanism for driving four wheels

【課題】　本考案は、前軸と後軸上に配置された従来の２つの差動機構に代えて４つの車輪を駆動する自動車における差動機構を提供する。 【解決手段】　本考案の変速機構はコンパクトな構造で製造が比較的低コストで、自動車のケースと地面との間の間隔を増大させる。本考案の変速機構を備えると、自動車の性能が改善される。 【選択図】　図１

Device and method for the electromechanical distribution of torque

Vorrichtung (100) und Verfahren zur elektromechanischen Verteilung von Drehmoment, gekennzeichnet durch ein Überlagerungsgetriebe (102) mit einer ersten Welle (104) und einer zweiten Welle (106) zur Übertragung von Drehmoment und einer Elektromaschine (108) zur Erzeugung eines Drehmoments an einer dritten Welle (144) des Überlagerungsgetriebes (102), zur Einstellung eines Drehmomentverhältnisses zwischen der ersten Welle (104) und der zweiten Welle (106), wobei das Überlagerungsgetriebe (102) ein erstes Umlaufgetriebe (110), ein zweites Umlaufgetriebe (112) und ein drittes Umlaufgetriebe (114) umfasst, die in Serie geschaltet sind, wobei das erste Umlaufgetriebe (110) und das zweite Umlaufgetriebe (112) ein gemeinsames Zentralrad (116) zur Übertragung von Drehmoment aufweisen, wobei das zweite Umlaufgetriebe (112) und das dritte Umlaufgetriebe (114) über eine Koppelwelle (140) zur Übertragung von Drehmoment verbunden sind, wobei die erste Welle (104) mit dem ersten Umlaufgetriebe (110) zur Übertragung von Drehmoment verbunden ist, wobei die zweite Welle (106) mit dem zweiten Umlaufgetriebe (112) zur Übertragung von Drehmoment verbunden ist, und wobei die dritte Welle (144) mit dem dritten Umlaufgetriebe (114) zur Übertragung von Drehmoment verbunden ist. An apparatus (100) and method for electromechanical distribution of torque, characterized by a superposition gear (102) having a first shaft (104) and a second shaft (106) for transmitting torque and an electric machine (108) for generating a torque at a third Shaft (144) of the superposition gear (102) for adjusting a torque ratio between the first shaft (104) and the second shaft (106), wherein the superposition gear (102) comprises a first epicyclic gear (110), a second epicyclic gear (112) and a third epicyclic gear (114) connected in series, the first epicyclic gear (110) and the second epicyclic gear (112) having a common central gear (116) for transmitting torque, the second epicyclic gear (112) and the third ...

Power transmission apparatus

Four-wheel drive transmission device

Four-wheel drive transmission device, characterized in that it comprises a secondary shaft (2), which is connected to the input of the central differential (4); an output of said central differential (4) driving the drive gear (3) of the coaxial front axle and being mounted on the inside of said secondary shaft (2), said drive gear driving a ring gear (29) solid with the front differential; the other output of the central differential (4) driving a coaxial rear driveshaft (15) and in the extension of said drive gear (3).

Transfer case for a four-wheel drive motor vehicle

Drive power transmission apparatus

A transmission apparatus (3) outputs drive power of a motor, from a speed changing mechanism (5, 7), via a sub-shaft (25), a power distribution apparatus (4) transmits rotation of an input end member (67) linked to the sub-shaft (25), via output shafts (83, 85), to the front-wheel end and the rear-wheel end, and the sub-shaft (25) and the power distribution apparatus (4) are disposed in an axially overlapping relationship.

Patent DE3514947C2

Method for improved anti-lock braking control for all-wheel drive vehicles having a viscous coupling or a viscous lock

A method for controlling a braking system in an all-wheel drive vehicle having a viscous coupling or a viscous lock, wherein a viscous torque acting on a wheel is estimated, the viscous torque is taken into account in estimating a desired braking pressure for the wheel, and the desired braking pressure is applied to the wheel.

A limiting differential

A limiting differential comprises first and second planetary pinions 23, 24 having helical teeth with different helix angles which produces thrust forces that generates a differential limiting torque between left and right drive axles 8, 11. The first pinion 23 meshes with first sun gear 21 which receives an input torque from final drive gear 6 via final driven gear 16 and differential case 18. This torque is transmitted to, for example, drive shaft 8 by second sun gear 22 which is meshed with second pinion 24 that is integrally connected to first pinion 23 and thereby to first sun gear 21. A carrier 20 is coupled to the first and second pinions 23, 24, via member 27, so that torque is conveyed to drive shaft 11. Thrust washers 25, 26 and 29 are provided for supporting the trust loads acting between the various components, eg the member 27 and carrier 20. The differential may also be employed in a central differential to limit torque distribution between front and rear wheels of a vehicle (see fig 14).

Four-wheel drive vehicle with two-wheel drive four-wheel drive switching device for running on uneven terrain

Axle assembly having a tapered spline arrangement

An axle assembly having a tapered spline arrangement. The axle assembly may include a first shaft that may have a first spline and a clutch collar that may have a clutch collar spline that may be disposed in a hole that may receive the first shaft. The first spline and the second spline may be tapered in opposite directions.

Power transmitting system

A power transmitting system for a vehicle includes a rotatable input shaft for introducing driving power into the system, a rotatable first output shaft for transmitting the driving power from the system, and a rotatable second output shaft for also transmitting the driving power from the system. A transmitting member is rotatably mounted on the first output shaft and for rotating the second output shaft, a clutch mechanism is disposed adjacent to the transmitting member and mounted on the first output shaft for engaging the transmitting member with the first output shaft. An actuator is provided for actuating the clutch mechanism. A compact power transmitting system can be obtained.

Transfer case limited slip planetary differential

A transfer case for a four wheel drive vehicle providing a central shaft defining a first output concentrically surrounded by a forward high/low drive range gear set and an aft dual planetary inter-axle differential gear set. A range clutch collar is disposed between the gear sets for selectively providing four wheel drive low range, neutral, and full-time four wheel drive high range. Likewise, a mode sleeve is disposed between the gear sets for selectively locking the differential gear set when the vehicle is shifted into its four wheel low range. Inner and outer relatively rotational drum housings surround the aft dual planetary differntial gear set for defining an annular viscous fluid coupling chamber therebetween. The inner drum is formed with internal annulus gear teeth meshed with a portion of the dual planetary gear set for rotation with the first output shaft while the outer drum is interconnected to a second output for providing full-time four wheel drive differentiation with limited slip between the first and second outputs.

Differential transmission device and viscous coupler, especially for a motor vehicle

There is provided a device which incorporates a viscous-fluid coupling (68) and a friction clutch (74) in which are integrated actuation means (80, 81) which cause the engagement or the release of the clutch as a function of the speed of rotation of one of the members which are connected by the device.

Power transmission apparatus

ABSTRACT A power transmission apparatus including a transmission shaft to transmit an input power, a pair of driven transmission shafts which is capable to effect relative rotations to the transmission shaft, a differential device which connects said pair of driven transmission shafts and allows a differential rotation therebetween, and differential limitation means which limits the differential rotation when the velocity of the rotation of the differential rotation exceeds a predetermined value, said differential limitation means comprising: a first plurality of plates fixed on one of the driven transmission shafts, a clutch member disposed on the other of the driven transmission shafts and having a second plurality of plates which mates with said first plurality of plates through a predetermined clearance therebetween, a viscous fluid liquid-tightly filled around said first and second plurality of plates, and a cam mechanism which functions due to a viscous resistance Or the viscous fluid to force said clutch member towards a direction in which said first and second plurality of plates are fastened together at the time of a relativc rotation between said pair Or driven transmission shafts.

Transfer case for four-wheel drive motor vehicles

Braking control for all-wheel drive vehicles with viscous clutch

Patent JPS49132727A

A method of controlling a coupling by fluid pressure regulated by an aperture

A coupling 11, eg for a limited slip differential of a four wheel drive vehicle, comprises a rotational disc 22 and a pumping member 23 having control apertures (31, 33, fig 3a) which, depending upon the direction of relative rotation between housing 14 and hub 24, either connects a groove 37 with pressurized chamber 21 or with reservoir having a piston 27. The groove 37 generates a pressure, as a result of shearing forces in a viscous fluid, that is applied to piston 19 which via pressure plate 18 loads friction plates 15, 17. A stop 41 engaging a groove 42 ensures that member 23 is rotatable relative to housing 20 only to a limited extent, thus allowing the apertures (31, 33, fig 3a) either to be connected to a channel (43, figs 5a, 5b) or a passage (30, 32, figs 5a, 5c) or both (fig 4). This permits pressure to be built up in chamber 21 when relative rotation takes place in different directions, it also allows a decrease in pressure. Springs 25, 28 are provided to counteract or balance the pressure in chamber 21 and O-ring 35 seals disc 22 and member 23. Several different configurations of stops 41, apertures etc are possible (eg see figs 6a-7c). A throttling bore (49, fig 8b), closed by a surface (51, 10a), may be provided. The groove maybe in the form of a spiral (fig 11b). <IMAGE>

POWER TRANSFER DEVICE.

CENTRAL DIFFERENTIAL.

Drive mechanism for four wheet drive drive automobiles

一种用于4WD汽车的传动机构，其中，用来将发动机的驱动动力分配至前后轮的中央差速(C/D)装置为一行星齿轮系。C/D装置由一差速传动(D/D)装置操纵。因此传送来自C/D装置的驱动动力至前轮的前差速(F/D)装置为一伞齿轮系。液体联接器连于C/D装置，从而限制C/D装置的差速运转。中间轴置于传动装置的一侧并由C/D装置使其转动。中间轴具有一螺旋伞齿轮系，用以将驱动动力传至后轮。由于这种中间轴，变速箱易于设置，而不会在该变速箱与发动机缸体之间产生任何干涉。

Locking mechanism for automobile with four-wheel drive

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

POWER DISTRIBUTION DEVICE FOR FOUR-WHEEL DRIVE.

4-wheel drive

DRIVE ARRANGEMENT FOR MOTOR VEHICLES DRIVEN ON ALL WHEELS

Interlocking system for motor vehicle in transmission to front and rear axles with continuous drive to all wheels

A limited slip differential system in the drive train of a motor vehicle with continuous all-wheel drive is provided with a direct through drive acted on by an intermediate planetary transmission and an engageable braking device. The transmission ratio between the planetary transmission and the braking device is substantially higher than the transmission ratio for the direct through drive. This keeps the required braking moment small and allows the use of a relatively small braking device.

Control couplings

Improvements in control couplings for controlling or limiting speed differences or angular acceleration between relative rotation members, especially used to control the multiplication or differential reduction between axles in four-wheeled vehicles of the type comprising mutually intertwined elements arranged for rotation about a common axis inside a housing containing a viscous liquid in contact with adjacent work surfaces of said elements, the alternate elements constituting a first set of elements for actuator connections with a first rotating member and the remaining elements constituting a second set of elements for actuator connections with a second rotating member, characterized in that a third and fourth sets of mutually interlaced elements are arranged in the form of clutch plates arranged to rotate in the housing around said axis the elements of the third and fourth sets having actuator connections with the first and second rotary members, respectively; spacer means for separating the facing surfaces from adjacent elements of at least one between the first and second sets and resilient spacing means for separating adjacent elements from at least one between the third and fourth sets so that the facing surfaces of adjacent elements of each separate set are separated by a distance greater than the thicknesses of the portions of the elements of the other set interlaced between said facing surfaces; a differential piston that depends on the pressure in the housing; a stop carried by the piston; and first spring means that push the piston to a first position in which the facing surfaces of adjacent elements of the, or each, spaced set taken between the third and fourth set are separated by distances greater than the thicknesses of the portions of the elements of the other set interlaced between said facing surfaces, the arrangement being so that, as the pressure in the housing increases, the piston moves against the first spring means to cause the stop to ...

4-wheel drive

Power transmission system for automotive vehicle

To provide symmetrically wide inner spaces near two front or rear wheels of an automotive vehicle in which an engine and a transmission are arranged in series in the vehicle transversal direction, a first large-sized viscous coupling is disposed near a small-sized front or rear differential gear to limit the differential motion thereof; and a second small-sized viscous coupling is disposed near a large-sized center differential gear to limit the differential motion thereof. The center differential gear is disposed on the transmission side to differentially distribute engine power to front and rear wheels, and the front or rear differential gear is disposed on the engine side to further differentially distribute engine power distributed by the center differential gear to right and left wheels.

Torque-biasing system

Four-wheel drive torque distribution control system

A planetary gear drive (50) is utilised as a central differential for controlling distribution of torque between the front and rear wheels of a four-wheel drive. The planetary gear device has a first sun gear (51) connected to an output shaft (15) of a transmission, a carrier (57), first (52) and second (54) planetary pinions rotatably supported on the carrier through a shaft, and a second sun gear (53). The first planetary pinion (52) is engaged with the first sun gear (51), and the second planetary pinion (54) is engaged with the second sun gear (53). The sun gears and the planetary pinions are so arranged that resultant force produced by the separative load and the tangential load at a contact point of the pinion and the sun gear is exerted on a bearing (26) of the shaft (58), so that the friction at the bearing produces a differential operation restricting torque.

FOUR-WHEEL DRIVE TRANSMISSION DEVICE

Dispositif de transmission à quatre roues motrices, caractérisé en ce qu'il comporte un arbre secondaire 2, qui est lié à l'entrée du différentiel central 4 ; une sortie dudit différentiel central 4 entraînant le pignon d'attaque 3 de l'essieu avant coaxial et se montant à l'intérieur dudit arbre secondaire 2, ledit pignon d'attaque entraîne une couronne 29 solidaire du différentiel avant ; l'autre sortie du différentiel central 4 entraînant un arbre de renvoi arrière 15 coaxial et dans le prolongement dudit pignon d'attaque 3. (CF DESSIN DANS BOPI)

Torque retaining and proportioning differential drive assembly

A differential drive assembly incorporates the use of two separate and essentially parallel output drive shafts, each receiving torque through separate differential gear clusters from separate spur drive gears, which receive input power, from a transmission. Each spur drive gear is attached to an input gear of a differential gear cluster and both gears are rotatably mounted on the output shaft for that gear cluster. The differential gear clusters drive the output shafts. A control gear of each differential gear cluster, which controls the output ratio of the connected gear cluster is attached to a worm and each control gear and attached worm are also rotatably mounted on the respective output shaft. The rotation of the control gears and worms is controlled by a worm gear situated between and engaged with both worms and rotatably mounted in the gear case on an axis perpendicular to the plane of the axes of the worms. The worm gear thus engaged with both worms allows rotation of the worms only when both worms rotate, and in opposite directions. The engagement of the worms with the worm gear as used in the differential drive assembly therefore provides: (1) control of the control gear of each differential gear cluster allowing transmission of torque to the axles; (2) control of balanced proportionate differentiated drive, by allowing the worms to rotate in opposite directions; (3) control of the dissipation of torque especially, using the irreversible drive feature of worm-worm gear engagement. Available torque is therefore retained, continuously proportioned, and utilized, that is, torque is never dissipated but directed to and used by the wheel or wheels (in 4-wheel drive) which can use it most effectively.

TRANSMISSION

Driving force distributing apparatus for four wheel drive vehicle

Differential mounting system

According to one embodiment, a vehicle powertrain includes an engine having a first locking feature defining first mating surfaces, and a differential coupled to a transfer case via a driveshaft. The differential includes a second locking feature defining second mating surfaces. The first and second locking features are engaged such that the first and second mating surfaces are disposed against each other connecting the engine and the differential. A fastener is disposed within the engine and the differential.

Power transmission system with clutch protection by interacting with other vehicle systems

Kraftübertragungsanordnung in einem Kraftfahrzeug mit einem Antriebsstrang, der normalerweise Antriebsmoment auf einen Primärtriebstrang (14) überträgt, die dahingehend betreibbar ist, selektiv Antriebsmoment auf einen Sekundärtriebstrang (16) zu übertragen, wobei die Kraftübertragungsanordnung Folgendes umfasst:- eine aktiv gesteuerte Mehrscheibenreibkupplung (70);- einen fremdkraftbetätigten Kupplungsaktuator (74), der dahingehend betreibbar ist, zur Regulierung der Verteilung von Drehmoment auf den Sekundärtriebstrang (16) eine Einkupplungskraft an die aktiv gesteuerte Mehrscheibenreibkupplung (70) anzulegen;- ein Motorsteuergerät (68), das zum Regulieren des Ausgangsdrehmoments des Antriebsstrangs konfiguriert ist; und- ein Verteilergetriebesteuermodul (68'), das mit dem fremdkraftbetätigten Kupplungsaktuator (74) in Wirkverbindung steht, wobei das Verteilergetriebesteuermodul (68') mit dem Motorsteuergerät (68) in Wirkverbindung steht und wobei das Verteilergetriebesteuermodul (68') dazu konfiguriert ist, Schlupf in der aktiv zu detektieren und dahingehend mit dem Motorsteuergerät (68) zu kommunizieren, eine Reduzierung des Ausgangsdrehmoments des Antriebsstrangs als Reaktion auf den detektierten Schlupf anzufordern. A powertrain in a motor vehicle having a powertrain normally transferring drive torque to a primary driveline (14), operable to selectively transfer drive torque to a secondary driveline (16), the powertrain comprising:- an actively controlled multiple disc friction clutch (70); - a power operated clutch actuator (74) operable to apply an engagement force to the actively controlled multiple disc friction clutch (70) to regulate the distribution of torque to the secondary drive train (16); - an engine controller (68) operable to regulate the output torque of the Powertrain is configured; and - a transfer case control module (68') operatively connected to the power-operated clutch actuator (74), wherein the transfer case control ...

Differential with differential motion limiting mechanism

A differential capable of distributing a torque of the input shaft to the two output shaft thereof and equipped with a differential motion limiting mechanism. The differential comprises a differential mechanism which receives a driving force through the input shaft thereof from a transmission connected to an engine and distributes the driving force to two output shafts; an oil pump interposed between two shafts, namely, the input shaft and either one of the output shafts themselves, and adapted to be driven by a differential revolving speed between the two shafts so as to produce a discharge pressure corresponding to the differential revolving speed; a clutch mechanism for coupling the two shafts; a hydraulic circuit for supplying the discharge pressure of the oil pump to the clutch mechanism to engage the two shafts; and hydraulic control means provided in the hydraulic circuit to control the discharge pressure to be supplied to the clutch mechanism. The differential produces a limiting torque corresponding to the differential revolving speed between the two shafts to limit the differential motion between the two shafts.

Transmission for four-wheel drive vehicles

The transmission of the present invention includes a multi-speed geartrain comprised of an input shaft, a mainshaft, and a plurality of constant-mesh gearsets arranged for selectively coupling the mainshaft to the input shaft for driven rotation at various speed ratios. The mainshaft can be selectively coupled to the power transfer arrangement for establishing two alternative power transmission routes. In particular, the range shift mechanism is provided for establishing a high-range power transmission route and a low-range power transmission route from the mainshaft to a quill shaft which, in turn, drives the interaxle differential. The torque delivered by the quill shaft is split by the interaxle differential between the front and rear drivelines to establish the full-time four-wheel high-range and low-range drive modes. Optionally, the torque transfer apparatus can be provided for controlling speed differentiation across the interaxle differential or in place of the interaxle differential for on-demand four-wheel drive operation. The torque transfer apparatus can be a speed-sensitive device or an electronically-controlled transfer clutch.

Power transmission apparatus

Four-wheel-drive vehicles

1411283 Differential gear; hydraulic transmission control GKN TRANSMISSIONS Ltd 15 June 1973 [21 June 1972 26 Aug 1972] 28975/72 and 39897/72 Headings F2C F2D and F2W In a four-wheel drive vehicle, wherein front and rear axles are coupled by a coupling which transmits torque upon relative rotation, to divert a portion of the torque from faster to slower rotating wheels, the coupling is subject to a temperature-sensing element which causes a reduction in the speed of relative rotation and hence the amount of energy converted into heat in the coupling. The coupling may comprise a throttled planetary gear pump, a viscous coupling, or a combined friction and viscous coupling, which latter may be shunted across a bevel differential gear. The thermal element may act directly or electrically. In Fig. 2 the coupling is a two-element planetary pump in a housing 45 in a casing arranged parallel to the main change-speed gear (18, Fig. 1, not shown) of the vehicle, the output of which gear drives the rear axle propeller shaft (19) directly and also the input shaft 26 of the planet gear through a transfer gear (20). The housing 45 is welded to an output shaft 43 and sprocket 58 which chain drives the front axle propeller shaft (21). Splined in the housing 45 is a ring gear 49, meshing planets 33 on a carrier 28 splined at 27 to the input shaft 26. Relative rotation between the axles causes the shrouded planets to pump liquid through a path 38, 41, 53, 35, including a restricted gap between faces 55, 54 of an axially fixed element 56 and a valve element 52, which latter is moved axially to decrease the gap and hence the resistance to relative rotation when the temperature rises sufficiently to expand a wax or vapour sensing element 60 opposed by a spring 57. In Fig. 6, a front axle drive-sprocket 105 is coupled to a rear axle direct drive shaft 103 by an interleaved disc viscous coupling 101 in parallel with a similar friction coupling 106, the discs of which latter are pressed ...

System for controlling a torque transfer actuator with multiple modes of operation

System for controlling a torque transfer actuator (5) for a four-wheel drive motor vehicle, comprising determining means (1) and a system for preventing the wheels from locking, characterized in that it comprises: a control means (2) for preventing the wheels from locking and a control means (3) for the torque transfer actuator, which means are able to interact in order to transmit the torque transfer command destined for the torque transfer actuator (5).

Control system for mutiple driving axle vehicle

In multiple driving axle vehicles, such as four wheel drive automotive vehicles, drive is transmitted to front and rear differentials respectively drivingly connected to front and rear pairs of road wheels, a controlled third or center differential drivingly connected to the front and rear differentials and acting as a free differential until one output of this differential rotates slower or faster a predetermined amount than the other output, at which time the control acts to operate a clutch to lock the center differential preventing any further increase in speed differences. The control is sensitive to the speed differences, percentagewise, of the outputs of the front and rear differentials, and acts to bias torque in the third differential according to the derivative of their speeds.

Offset transfer case

A transfer case (20) for use in a four-wheel drive vehicle is disclosed. The transfer case (20) has an input shaft (44) supported for rotation about a first rotary axis, a first output shaft (32) supported for rotation about a second rotary axis, a second output shaft (42) supported for rotation about a third rotary axis, and a torque transfer arrangement (48) for delivering drive torque from the input shaft (44) to each of the first and second output shafts.

Torque-biasing system

Interaxle differential system for connecting two driven axles of a motor vehicle

An interaxle differential system connecting two driven axles of a motor vehicle comprises a restrainable differential and a planetary gear train, which comprises three torque-transmitting members which have parallel axes. Two of said torque-transmitting members are operatively connected to two output shafts of the differential. A restraining device is connected to the third of said torque-transmitting members. In an interaxle differential system for use in a passenger car, the restraining device is a controllable liquid friction coupling, one coupling half of which is held against rotation.

Transfer device for four-wheel drive vehicles