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:
Mar. 26, 2002
Filed:
Aug. 29, 2000
Timo Aimo Waltteri Wiemero, Canton, MI (US);
Daniel Lawrence Meyer, Dearborn, MI (US);
Philip William Husak, Southgate, MI (US);
William Francis Stockhausen, Northville, MI (US);
Ford Global technologies, Inc., Dearborn, MI (US);
Abstract
A method and system for reducing cold-start emissions of an automotive vehicle having an internal combustion engine . System includes a main controller or control system , a variable valve timing system , an ignition system , a fuel metering system , and vehicle operating condition sensors . Controller detects cold-start conditions based on signals received from sensors , and in response to such a detection, controller generates command signals to said variable valve timing system , to said ignition system , and to said fuel metering system , effective to respectively alter valve timing, spark timing, and said air/fuel delivery of engine in a manner which synergistically increases air/fuel enleanment limits, improves combustion characteristics, and increases exhaust gas temperature, thereby reducing cold-start emissions.