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:
Jul. 27, 1999
Filed:
Oct. 20, 1997
Applicant:
Inventor:
Gerold Bieber, Langenargen, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ;
U.S. Cl.
CPC ...
477 97 ; 477120 ; 701 51 ; 701 55 ;
Abstract
For testing the operation of the braking system of vehicles, in particular heavy trucks having an automatic multi-ratio mechanical transmission, an estimate for the total weight of the vehicle is formed on the basis of the vehicle's own parameters and driving parameters. If account is taken for the braking force or the acceleration in this calculation, in case of considerable deviations of the calculated vehicle weight from a threshold value, it can be concluded that a defect exists in the braking system of the vehicle. In this case, an alarm signal is given to the driver of the vehicle and/or directly geared to the operation of the mechanical transmission.