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:
Oct. 19, 2004
Filed:
Nov. 05, 2002
Jing Sun, Bloomfield, MI (US);
Ilya V. Kolmanovsky, Ypsilanti, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method for controlling cylinder charge in a direct-injection, spark-ignition engine. The engine includes an intake manifold and an electronically controlled throttle (ETC) valve controlling air flow from the atmosphere to the intake manifold of said engine. The method includes: measuring an intake manifold pressure value, P ,; measuring a flow value, W , which is indicative of flow through the ETC throttle; determining a desired intake manifold pressure value, P ; determining a desired ETC valve position, u ; determining a desired flow, W , through the ETC valve; and, adjusting said ETC valve position, u , in accordance with: said desired ETC valve position, u ; a difference between the measured intake manifold pressure value, P , and the determined desired intake manifold pressure value, P ; and a difference between the measured flow value, W , through the ETC valve and the determined desired flow, W . In-cylinder and throttle body adaptation is also provided.