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:
Nov. 21, 2000
Filed:
Sep. 15, 1997
Klaus Wenzlawski, Nurnberg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for determining a fuel quantity to be fed to an internal combustion engine, includes initially determining a desired fuel quantity on the basis of a desired operational performance of the internal combustion engine. Moreover, a minimum air/fuel ratio is determined at which soot-free operation of the internal combustion engine is possible, and a maximum fuel quantity is determined on the basis of the minimum air/fuel ratio. The desired fuel quantity which is limited to the maximum fuel quantity is then determined as the fuel quantity to be fed to the internal combustion engine. It is advantageous in this case to determine the minimum air/fuel ratio in non-steady operation on the basis of a charging pressure or a difference between the charging pressure and the ambient pressure.