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. 04, 2008
Filed:
Jun. 13, 2006
Joachim Bornitz, Waiblingen, DE;
Nicholas Fekete, Stuttgart, DE;
Lorenzo Matassini, Stuttgart, DE;
Ruediger Pfaff, Stuttgart, DE;
Joachim Bornitz, Waiblingen, DE;
Nicholas Fekete, Stuttgart, DE;
Lorenzo Matassini, Stuttgart, DE;
Ruediger Pfaff, Stuttgart, DE;
Daimler Chrysler AG, Stuttgart, DE;
Abstract
In a method and apparatus for the cylinder-specific determination and control of a fuel injection quantity for a multi-cylinder internal combustion engine, the exhaust gas pressures of the cylinders of the internal combustion engine is recorded on a time-resolved, i.e. crankshaft angle-resolved, basis, and an exhaust gas pressure is calculated therefrom individually for each cylinder and used to determine the fuel quantity injected into the corresponding cylinder. In a comparison with a desired value the cylinder-specific actual fuel injection quantity error is then determined and used to set a corrected quantity of fuel to be injected into the corresponding cylinder.