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:
Jun. 01, 2010
Filed:
Jan. 27, 2009
Allen B. Rayl, Waterford, MI (US);
Chen-fang Chang, Troy, MI (US);
Peter Kafarnik, Eltville-Erbach, DE;
Jun-mo Kang, Ann Arbor, MI (US);
Vijay Ramappan, Novi, MI (US);
Allen B. Rayl, Waterford, MI (US);
Chen-Fang Chang, Troy, MI (US);
Peter Kafarnik, Eltville-Erbach, DE;
Jun-Mo Kang, Ann Arbor, MI (US);
Vijay Ramappan, Novi, MI (US);
Abstract
A method and system for controlling an engine includes a spark ignition (SI) control module operating the engine in a spark ignition mode in a high lift valve state and a pre-HCCI control module entering a matching state when homogeneous charge compression ignition (HCCI) mode conditions are met. When a matching condition is met, the pre-HCCI control module enters a pre-homogeneous charge compression ignition mode and performs spark retardation, stratified operation or lean operation and commands a low lift valve state. The system also includes an HCCI control module entering an HCCI mode and when in the low lift valve state.