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:
Jun. 28, 2016
Filed:
Jul. 04, 2013
Scania Cv Ab, Södertälje, SE;
Klas Telborn, Södertälje, SE;
SCANIA CV AB, , SE;
Abstract
A method operable when driving a vehicle, wherein the vehicle has an internal combustion engine with at least one combustion chamber as well as an air supply to said combustion chamber that can be controlled, wherein, when driving said vehicle, an air/fuel ratio in said combustion chamber is controlled such that said air/fuel ratio does not fall below a first limit value (λ), and wherein said air/fuel ratio is also controlled such that a first margin (Δλ) with respect to said first limit value (λ) is maintained. The method includes determining a first measure (M) of a requirement for a margin with respect to said first limit value (λ), and if said first measure (M) of said requirement represents a reduced requirement for a margin with respect to said first limit value, reducing said first margin (Δλ) with respect to said first limit value (λ) to a second margin being smaller than said first margin.