Motor vehicles – Having four wheels driven – With differential means for driving two wheel sets at...
Patent
1993-01-19
1994-08-09
Hill, Mitchell J.
Motor vehicles
Having four wheels driven
With differential means for driving two wheel sets at...
180140, 180233, 180242, 180305, B62D 714, B60K 2304
Patent
active
053357469
ABSTRACT:
An electromagnetic clutch driven steerable drive axle system for a four-wheel drive vehicle, such as a front mount mower, including a rotary power source, a driven front axle, a mechanical rear axle converting power from the rotary power source into tractive power at a set of wheels attached thereto, a steering mechanism connected to the rear wheels, an electromagnetic clutch between the power source and mechanical rear axle, and a transducer which provides input representative of the turning and/or tractive power status of the mower to a microprocessor which may send current to the clutch. Having a plurality of frictional clutch disks, the clutch selectively transmits driving power to the secondary axle based on input current applied by the microprocessor. With the disks separated, the rotary power source and steerable axle are uncoupled. The rear wheels are allowed to freewheel, reducing skidding during turns in forward and reverse. Various embodiments are possible using known transducers for monitoring system parameters. The microprocessor compares these parameters to predetermine values and bases the input current to the clutch on them. The availability of four-wheel drive may be controlled by microprocessor logic and preloading of the clutch disks, either mechanically (with springs) or electromagnetically. Electrical preloading of the clutch enables vehicle torque to be intensified when additional tractive power is required.
REFERENCES:
patent: 4662499 (1987-05-01), Jordan
patent: 4723624 (1988-02-01), Kawasaki et al.
patent: 4733577 (1988-03-01), Griesser et al.
patent: 4781078 (1988-11-01), Blessing et al.
patent: 4909344 (1990-03-01), Mueller et al.
patent: 4937750 (1990-06-01), Gilliam
patent: 4989686 (1991-02-01), Miller et al.
patent: 5007498 (1991-04-01), Wiese et al.
patent: 5030181 (1991-07-01), Keller
patent: 5161636 (1990-10-01), Haupt
Hill Mitchell J.
Sauer Inc.
LandOfFree
Electromagnetic clutch driven steerable axle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electromagnetic clutch driven steerable axle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic clutch driven steerable axle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-210407