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:
Mar. 20, 2001
Filed:
Sep. 08, 1998
Ivica Batistic, Frankfurt am Main, DE;
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Abstract
To improve the control behavior of an ABS, a driving situation on a low coefficient of friction is quickly and reliably identified. To this end, the reacceleration of the non-driven wheels following a control-induced braking pressure reduction is analyzed, and the existence of a low coefficient of friction is identified if simultaneously in the reacceleration phase the maximum reacceleration of the two non-driven wheels is below a predefined limit value and the maximum filtered acceleration is below a specific predefined limit value, and if the duration of the positive variation of the filtered acceleration in this phase exceeds a predetermined time limit value. When these conditions are satisfied, braking pressure reduction in the following instability phase of the wheels is increased, for example, by a permanent actuation of the pressure reducing valves.