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:
Jan. 27, 2009
Filed:
Nov. 03, 2005
David H. Keeler, Midlothian, VA (US);
Francis M. Sprinkel, Glen Allen, VA (US);
Niranjan Maharajh, Richmond, VA (US);
Mimmo Elia, Watertown, MA (US);
Josh Breinlinger, Hampstead, NH (US);
Jan-roger Linna, Boston, MA (US);
David H. Keeler, Midlothian, VA (US);
Francis M. Sprinkel, Glen Allen, VA (US);
Niranjan Maharajh, Richmond, VA (US);
Mimmo Elia, Watertown, MA (US);
Josh Breinlinger, Hampstead, NH (US);
Jan-Roger Linna, Boston, MA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
There is provided a fuel injector system for vaporizing liquid fuel and metering the vapor to an internal combustion engine of an automobile. The system has at least one fuel injector with at least one capillary flow passage with a heat source arranged along the flow passage capable of heating liquid fuel in the flow passage to a level sufficient to vaporize it, a solenoid operated metering valve located at the capillary outlet for metering vaporized fuel to the internal combustion engine, and a system for operating the metering valve while delivering the vaporized fuel at an opening and closing frequency of at least 15 Hz or more preferably at least 60 Hz independent of engine rpm. The system is expected to be useful for starting a cold engine with reduced emissions.