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. 13, 2018
Filed:
Nov. 09, 2015
Dr. Ing. H.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Andre Casal Kulzer, Boeblingen, DE;
Thorben Walder, Stuttgart, DE;
Ludwig Theilemann, Schoemberg-Schwarzenberg, DE;
Michael Reinhardt, Neulingen, DE;
Michael Ebert, Grossbottwar, DE;
DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT, Stuttgart, DE;
Abstract
A method for operating an internal combustion engine () that has at least one cylinder row () with first and second exhaust-gas turbochargers (). Charge air is provided by the first exhaust-gas turbocharger () in single-charger operation, but is provided by the first and second exhaust-gas turbocharger () in two-charger operation. To switch from single-charger to two-charger operation above a load threshold value of the internal combustion engine (), when a speed of the internal combustion engine () reaches or overshoots a threshold value, a charge pressure is increased to build up a torque reserve and a charge pressure reserve and to maintain a driver demand torque. When the charge pressure reaches or overshoots a threshold value, a switch is made from single-charger operation to two-charger operation, and subsequently, the torque reserve and the charge pressure reserve are eliminated.