Driving force control system in four-wheel drive vehicle

Details Driving force control system in four-wheel drive vehicle Driving force control system in four-wheel drive vehicle

1997-12-19

2000-08-22

Hurley, Kevin

Motor vehicles

Having four wheels driven

With differential means for driving two wheel sets at...

701 87, B60K 17348

Patent

active

061057037

ABSTRACT:
In a four-wheel drive vehicle, a rear differential includes an input shaft to which a driving force is transmitted from front wheels through a propeller shaft, a driven bevel gear mounted on the input shaft, a follower bevel gear mounted on a clutch drive shaft and meshed with the driven bevel gear, left and right electromagnetic clutches disposed between opposite ends of the clutch drive shaft and left and right output shafts. The maximum transmitted torque transmitted through the left and right electromagnetic clutches is controlled, so that it is decreased with an increase in vehicle speed detected by vehicle speed detecting means. Thus, the vehicle can avoid the maximum horsepower transmitted by the bevel gears and the electromagnetic clutches being increased with an increase in vehicle speed. Therefore, it is possible to ensure the durability of the bevel gears and the clutches, while providing a reduction in size of the bevel gears and the clutches.

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