The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 2004
Filed:
Mar. 20, 1996
Bodo Klein, Barsinghausen, DE;
Axel Stender, Hameln, DE;
Christian Wiehen, Burgwedel, DE;
Norbert Witte, Wunstorf, DE;
Wabco GmbH, Hannover, DE;
Abstract
A process for braking a vehicle having at least first and second brakes, comprises supplying energy to the first and second brakes so as to actuate them, the energy being distributed between the first and second brakes in accordance with the brakes' response energies. Preferably, the momentary values of the response energies are used so that the first and second brakes are actuated simultaneously. The momentary values of the response energies of the brakes may be determined as follows: (a) measuring the existing vehicle deceleration to determine a value of ground-vehicle deceleration, (b) supplying a braking test energy to the brake being tested, (c) measuring the deceleration of the vehicle after the braking test energy has been supplied to the brake being tested in order to determine a value of vehicle test deceleration, (d) comparing the value of ground-vehicle deceleration with the value of vehicle test deceleration, and (e) if the value of vehicle test deceleration is greater than the value of ground-vehicle deceleration by more than a predetermined tolerance value, repeating steps (a) to (d) with a reduced braking test energy until the difference between the value of vehicle test deceleration and the value of ground-vehicle deceleration is decreased to no more than the predetermined tolerance value, or (f) if the value of vehicle test deceleration is equal to or less than the value of ground-vehicle deceleration, repeating steps (a) to (d) with a higher braking test energy until the value of vehicle test deceleration exceeds the value of ground-vehicle deceleration by a value which is less than or equal to the predetermined tolerance value. The energy supplied to the brakes to actuate them may be in the form of pressure.