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. 24, 2006
Filed:
Jun. 03, 2005
Goran Almkvist, Lerum, SE;
Håkan Sandquist, Lerum, SE;
Henrik Håkansson, Stockholm, SE;
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
An internal combustion engine and a method of reducing hydrocarbon emissions of an internal combustion engine during cold start conditions in disclosed. The engine has at least one cylinder provided with a piston which reciprocates between a top dead-center and a bottom dead-center, at least one intake valve through which intake air is provided, a fuel injector assembly arranged to inject atomised fuel particles directly into the cylinder and means for controlling the opening and closing of the intake valve. According to the invention, intake valve opening is adjusted to occur after top dead center of the piston. When the intake valve opens, a pressure differential exists across the valve. Fuel is injected directly into the cylinder during the time of the pressure differential.