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:
May. 26, 2015
Filed:
Jun. 15, 2012
Maria Södergren, Segeltorp, SE;
Martin Evaldsson, Nacka, SE;
Maria Södergren, Segeltorp, SE;
Martin Evaldsson, Nacka, SE;
Scania CV AB, , SE;
Abstract
A method and a system for determining a running resistance Ffor a vehicle. A model-based running resistance Fis estimated. Thereafter an energy change difference ΔWbetween a model-based estimated energy change ΔWand an actual energy change ΔWis determined for the vehicle from a starting point to an end point of a distance S which is traveled by the vehicle. A braking force Fwhich is unknown to the model and which acts upon the vehicle over the distance S is also determined on the basis of the energy change difference ΔW. Thereafter the running resistance Fis determined to an adjusted value of the model-based estimate of the running resistance F, the adjustment being based on the braking force Fwhich is unknown to the model.