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. 25, 2005
Filed:
Jan. 15, 2004
Jan-roger Linna, Boston, MA (US);
Peter Palmer, Carson City, NV (US);
John Paul Mello, Belmont, MA (US);
Stuart Bennett Sprague, Oakland, CA (US);
Jan-Roger Linna, Boston, MA (US);
Peter Palmer, Carson City, NV (US);
John Paul Mello, Belmont, MA (US);
Stuart Bennett Sprague, Oakland, CA (US);
Chrysalis Technologies Incorporated, Richmond, VA (US);
Abstract
An apparatus and method for improving the transient response of a spark-ignited fuel-injected internal combustion engine is disclosed. This is accomplished by employing one or more novel capillary fuel injectors. These devices are port fuel injectors modified by inserting one or more relatively small diameter heated tubular capillaries between the fuel line and a conventional injector. Sufficient heating can be produced so that flash vaporization occurs as the fuel exits the injector. The heaters are turned on using control algorithms that can be based on exhaust gas oxygen concentration, load on the engine, and accelerator pedal position.