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:
Feb. 27, 2007
Filed:
Sep. 09, 2005
Applicant:
David Clemens, Canton, MI (US);
Inventor:
David Clemens, Canton, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F02M 33/02 (2006.01); F02M 33/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system and method for controlling the introduction of purge fuel vapor into a multi-cylinder internal combustion engine is provided. According to one aspect of the disclosure, a schedule for opening and closing an on-off, pulse-width-modulated, purge control valve is predetermined, and the purge control valve is opened and closed according to the predetermined schedule. According to one aspect of the disclosure, a predetermined schedule can include a repeating sequence of on-pulse frequencies.