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
  • B60K17/344—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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
  • F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
  • F16D2037/002—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by a single substantially axial gap in which the fluid or medium consisting of small particles is arranged

Definitions

• Figure 3 is a kinematic diagram of the transfer case
• Figure 4 is a graph showing the relationship between torque transfened by the clutch of the transfer case and current conducted in the coil of the clutch;
• the sun gear 40 being engaged with the planet gears 44, also drives them, and here the torque in the clutch segment of the indirect path recombines with the torque in the mechanical segment of the indirect path to drive the carrier 46 which in turn transfers the torque of the indirect path to the output shaft 34. Since the output shaft 34 is connected to the rear wheels 4 through the gear set 18, the drive shaft 20 and the rear differential 22, the torque in the indirect path is delivered to the rear wheels 4, and under some operating conditions may be accompanied by slippage in the transfer case 12. That slippage will occur within the clutch 38, and when it does, the sun gear 40 of the planetary set 36 rotates at a slightly different velocity than the ring gear 42.
• Another automotive vehicle B ( Fig. 6) likewise has front and rear wheels 2 and 4 which are driven through front and rear differentials 16 and 22, respectively.
• the vehicle B has a motor 6 and a transmission 8.
• the rear wheels 4 serve as the primary driving wheels and the front wheels 2 as the secondary driving wheels
• the motor 6 and transmission 8 are mounted longitudinally, not transversely as in the vehicle A.
• the transmission 8 delivers torque to a modified transfer case 90 which splits it between the rear wheels 4 and the front wheels 2. Indeed, after the split torque is delivered to the rear differential 22 through a drive shaft 92 which extends from the transfer case 90. The remainder of the torque is delivered to the front wheels 2 through a chain-and-sprocket drive 94 and a front drive shaft 96 which leads to the front differential 16.
• the magnetic particle clutch 102 is virtually the same as the clutch 38 and the reference numerals applied to the clutch 102 correspond to those applied to the clutch 38.
• the planetary set 100 differs somewhat from the planetary set 36, but it does have a sun gear 110, a ring gear 112 located around the sun gear 112, planetary gears 114 engaged with the sun and ring gears 110 and 112, and a carrier 116 that follows the planet gears 114, it providing axes around which the planet gears 114 rotate.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Arrangement And Driving Of Transmission Devices (AREA)
• Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
• Retarders (AREA)

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Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (6)

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Citations (2)

Family Cites Families (21)

• 2002
  • 2002-01-29 US US10/059,450 patent/US6712728B2/en not_active Expired - Fee Related
• 2003
  • 2003-01-29 JP JP2003563850A patent/JP2005516161A/ja active Pending
  • 2003-01-29 CN CN03802940.5A patent/CN1625493A/zh active Pending
  • 2003-01-29 DE DE60317769T patent/DE60317769T2/de not_active Expired - Fee Related
  • 2003-01-29 EP EP03705967A patent/EP1470015B1/en not_active Expired - Lifetime
  • 2003-01-29 WO PCT/US2003/002628 patent/WO2003064201A1/en not_active Ceased

Patent Citations (2)

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