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:
Jul. 31, 2007
Filed:
May. 26, 2005
Roberto O. Pellizzari, Groton, MA (US);
John Baron, Lexington, MA (US);
Jan-roger Linna, Boston, MA (US);
Peter Loftus, Cambridge, MA (US);
Peter Palmer, Carson City, NV (US);
John Paul Mello, Belmont, MA (US);
Stuart Bennett Sprague, Berkeley, CA (US);
Roberto O. Pellizzari, Groton, MA (US);
John Baron, Lexington, MA (US);
Jan-Roger Linna, Boston, MA (US);
Peter Loftus, Cambridge, MA (US);
Peter Palmer, Carson City, NV (US);
John Paul Mello, Belmont, MA (US);
Stuart Bennett Sprague, Berkeley, CA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A fuel system for use in an internal combustion engine includes a plurality of fuel injectors, each injector including at least one capillary flow passage, the at least one capillary flow passage having an inlet end and an outlet end, a heat source arranged along the at least one capillary flow passage, the heat source operable to heat a liquid fuel in the at least one capillary flow passage to a level sufficient to convert at least a portion thereof from the liquid state to a vapor state, and a valve for metering fuel to the internal combustion engine, a controller to control the power supplied to the heat source of each of the plurality of fuel injectors to achieve a predetermined target temperature, a sensor for use in determining engine air flow and a sensor for measuring a value indicative of degree of engine warm-up of the internal combustion engine.