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:
Mar. 30, 1999
Filed:
Oct. 10, 1997
Applicant:
Inventors:
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731182 ;
Abstract
A method for determining an air mass flow into cylinders of an internal combustion engine with the aid of a model includes calculating an air mass actually flowing into a cylinder with the aid of an intake tube filling model supplying a load variable on the basis of which an injection time is determined, from input variables relating to throttle opening angle and ambient pressure and from parameters representing valve control. The load variable is used for prediction in order to estimate the load variable at an instant which is at least one sampling step later than a current calculation of the injection time.