Method for tire pressure warning

Details Method for tire pressure warning Method for tire pressure warning

1994-08-16

1996-12-10

Hofsass, Jeffery

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340432, 340433, 73146, 731462, B60C 2300

Patent

active

055834833

ABSTRACT:
Method for tire pressure warning in a motor vehicle in which, instead of direct pressure measurement, the tire pressure is monitored indirectly by recording the dynamic rolling circumference of the tire and, in this way, to dispense with sensors, in particular if wheel speed sensors have already been installed in the vehicle.
The method works on the basis of a wheel speed balance, within which speed scaling factors are determined. By comparing these scaling factors in pairs, determining the maximum deviation and checking whether a particular threshold value has been exceeded, a reliable tire pressure warning can be implemented with little outlay, in particular in the case of a wheel speed balance for each axle.

REFERENCES:
patent: 3613075 (1969-10-01), Griffiths et al.
patent: 3691524 (1972-09-01), Frost et al.
patent: 3707701 (1972-12-01), Neu
patent: 4355298 (1982-10-01), Jessup
patent: 4905783 (1990-03-01), Bober
patent: 5218862 (1993-06-01), Hurrell, II et al.
patent: 5239469 (1993-08-01), Walker et al.
patent: 5343741 (1994-09-01), Nishihara et al.
patent: 5345217 (1994-09-01), Prottey

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