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:
Jul. 18, 2017
Filed:
Feb. 20, 2014
Robert Bosch Gmbh, Stuttgart, DE;
Jacob Larimore, Ann Arbor, MI (US);
Li Jiang, Ann Arbor, MI (US);
Erik Hellstrom, Ann Arbor, MI (US);
Shyam Jade, Ann Arbor, MI (US);
Anna Stefanopoulou, Ann Arbor, MI (US);
Julien Vanier, Farmington Hills, MI (US);
Robert Bosch GmbH, Stuttgart, DE;
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
Systems and methods are described for on-line, real-time estimation of a residual mass in an engine cylinder during HCCI combustion. The residual mass is estimated based on an estimated residual mass for a previous combustion cycle. A value of a first performance variable for the first combustion cycle is determined based only on engine data measured by one or more sensors. A value of a second performance is estimated based at least in part on the estimated residual mass for the first combustion cycle. An adaptive scaling factor is determining for the first combustion cycle based on the determined value of the first performance variable and the estimated value of the second performance variable. An adjusted residual mass for the first combustion cycle is then determined based on the estimated residual mass for the first combustion cycle and the adaptive scaling factor for the first combustion cycle.