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:
Aug. 31, 2010
Filed:
Aug. 06, 2008
Ralf Speetzen, Friedrichshafen, DE;
Günther Schmidt, Friedrichshafen, DE;
Albert Kloos, Friedrichshafen, DE;
Andreas Kunz, Friedrichshafen, DE;
Michael Willmann, Bermatingen, DE;
Jörge Remele, Hagnau, DE;
Marc Hehle, Constance, DE;
Ralf Speetzen, Friedrichshafen, DE;
Günther Schmidt, Friedrichshafen, DE;
Albert Kloos, Friedrichshafen, DE;
Andreas Kunz, Friedrichshafen, DE;
Michael Willmann, Bermatingen, DE;
Jörge Remele, Hagnau, DE;
Marc Hehle, Constance, DE;
MTU Friedrichshafen GmbH, Friedrichshafen, DE;
Abstract
A method for controlling an internal combustion engine having a common rail system together with individual accumulators. A rotational speed-control deviation (dn) is determined from a target rotational speed (nSL) that represents the set point for an outer control loop to control the rotational speed, as well as from an actual rotational speed (nIST). A target torque (MSL) is determined from the rotational speed-control deviation (dn) via a rotational speed controller as a master controller. A target injection duration (SD(SOLL)) is determined from the target torque (MSL). The target duration injection (SD(SOLL)) represents the set point for an inner control loop for controlling cylinder-specific injection duration. An injection duration deviation is determined from the target injection duration (SD(SOLL)) and from an actual injection duration. A correcting variable is determined from the injection duration deviation via an injection duration controller as a follow-up controller, and an injection duration is determined from the correcting variable and the target injection duration for activating the injectors.