Method of detecting low tire pressure by comparing wheel speeds

Details Method of detecting low tire pressure by comparing wheel speeds Method of detecting low tire pressure by comparing wheel speeds

1996-08-19

1998-02-24

Dougherty, Elizabeth L.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

340442, B60C 2302

Patent

active

057213747

ABSTRACT:
Relative speeds of wheels are measured in different speed ranges when tires are properly inflated to learn offsets due to parameters not related to pressure. The offsets are used during leak monitoring to detect a wheel speed pattern which is abnormal due to pressure drops. During learning periods, monitoring for large pressure drops only is permitted using preliminary offset values. When learning is complete in a given speed range high sensitivity monitoring is invoked. Special sensitivity of large pressure drops shortly after vehicle start up allows a brief period of flat detection. A plurality of leak events for a given wheel are accumulated to signal a warning, with large pressure drops accumulating faster than small drops for progressive sensitivity and greater robustness.

REFERENCES:
patent: 3581277 (1971-05-01), Beatty, Jr. et al.
patent: 3613075 (1971-10-01), Griffiths et al.
patent: 3691524 (1972-09-01), Frost et al.
patent: 4167699 (1979-09-01), Baker
patent: 4224597 (1980-09-01), DiCecio
patent: 4355298 (1982-10-01), Jessup
patent: 4414548 (1983-11-01), Carpenter et al.
patent: 4777611 (1988-10-01), Tashiro et al.
patent: 4803646 (1989-02-01), Burke et al.
patent: 4876528 (1989-10-01), Walker et al.
patent: 5192929 (1993-03-01), Walker et al.
patent: 5218862 (1993-06-01), Hurrell et al.
patent: 5228337 (1993-07-01), Sharpe et al.
patent: 5231597 (1993-07-01), Komatsu
patent: 5248957 (1993-09-01), Walker et al.
patent: 5307293 (1994-04-01), Sakai
patent: 5343741 (1994-09-01), Nishihara et al.
patent: 5345217 (1994-09-01), Prottey
patent: 5442331 (1995-08-01), Kishimoto et al.
patent: 5483220 (1996-01-01), Kushimoto et al.
patent: 5524482 (1996-06-01), Kushimoto et al.
patent: 5569848 (1996-10-01), Sharp
patent: 5578984 (1996-11-01), Nakajima
patent: 5589816 (1996-12-01), Jones
Research Disclosure--Oct. 1993/643 RD# 35403 Title: Method of Detecting Low Tire Pressure by Comparing Tire Speeds. Disclosed Anonymously.
"Method of Detecting Low Tire Pressure by Comparing Tire Speeds," Anonymously, Research Disclosure, Sep. 1993.

Affiliated with

Also associated with

Rating

Method of detecting low tire pressure by comparing wheel speeds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of detecting low tire pressure by comparing wheel speeds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting low tire pressure by comparing wheel speeds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1876244