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:
May. 10, 2016
Filed:
Mar. 21, 2014
Robert Bosch Gmbh, Stuttgart, DE;
Jason Schwanke, Southfield, MI (US);
Anna Stefanopoulou, Ann Arbor, MI (US);
Li Jiang, Ann Arbor, MI (US);
Jeffrey S. Sterniak, Canton, MI (US);
Nikhil Ravi, Mountain View, CA (US);
Joel Oudart, Sunnyvale, CA (US);
Erik Hellstrom, Ann Arbor, MI (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Methods and systems are described for controlling engine combustion during a mixed-mode combustion modality. A target exhaust valve timing is determined based on a first combination of engine speed and load. An amount of trapped residual in an engine cylinder after an exhaust valve is closed during a first combustion cycle is also determined. Based at least in part on the amount of trapped residual, an amount of gas that will be drawn into the engine cylinder when the intake valve is opened during a second combustion cycle is determined. The target exhaust valve timing is then adjusted during the second combustion cycle in order to adjust the amount of gas that will be drawn into the engine cylinder when the intake valve is opened during a third combustion cycle.