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. 28, 2019
Filed:
May. 25, 2015
Scania Cv Ab, Södertälje, SE;
Karl Redbrandt, Solna, SE;
Martin Evaldsson, Nacka, SE;
SCANIA CV AB, , SE;
Abstract
A desired change of a time derivative of dynamic torque (Tq), provided to an output shaft from an engine in a vehicle, from a current value to a new desired value is determined. A current rotational speed difference (Δω) is determined between a first end of the powertrain in a vehicle, which rotates with a first rotational speed (ω), and a second end of the powertrain, which rotates with a second rotational speed. The first rotational speed (ω) is then controlled on the basis of the desired value of the time derivative for the dynamic torque (Tq), a spring constant (k) related to a torsional compliance in the powertrain, and the determined current rotational speed difference {Δω). Through control of the first rotational speed, the current value for the time derivative for the dynamic torque is also indirectly controlled towards the desired value.