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. 06, 2008
Filed:
Mar. 02, 2006
Tang-wei Kuo, Troy, MI (US);
Jun-mo Kang, Ann Arbor, MI (US);
Chen-fang Chang, Troy, MI (US);
Zongxuan Sun, Troy, MI (US);
James A. Eng, Troy, MI (US);
Barry L. Brown, Lake Orion, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Man-feng Chang, Troy, MI (US);
Tang-Wei Kuo, Troy, MI (US);
Jun-Mo Kang, Ann Arbor, MI (US);
Chen-Fang Chang, Troy, MI (US);
Zongxuan Sun, Troy, MI (US);
James A. Eng, Troy, MI (US);
Barry L. Brown, Lake Orion, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Man-Feng Chang, Troy, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A method is provided for control of a direct-injection engine operated with controlled auto-ignition (HCCI) during load transient operations between modes of lean combustion low load (HCCI/Lean) and stiochiometric combustion medium load (HCCI/Stoich.). The method includes 1) operating the engine at steady state, within a homogeneous charge compression-ignition (HCCI) load range, with fuel-air-exhaust gas mixtures at predetermined conditions, for each speed and load, and controlling the engine during changes of operating mode between one to another of the HCCI/Stoich. medium load mode and the HCCI/Lean lower load mode by synchronizing change rates of predetermined controlled inputs to the current engine fueling change rate.