On demand vehicle drive system

Motor vehicles – Having four wheels driven – With differential means for driving two wheel sets at...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

180197, B60K 17348

Patent

active

056092199

ABSTRACT:
An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle. When wheel slip is reduced below the predetermined value the current to the clutch is incrementally reduced. The method of operating such a system is also described.

REFERENCES:
patent: 4836322 (1989-06-01), Sakakiyama
patent: 4989686 (1991-02-01), Miller et al.
patent: 5497333 (1996-03-01), Sasaki

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

On demand vehicle drive system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with On demand vehicle drive system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On demand vehicle drive system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-437229

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.