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:
Nov. 14, 1995
Filed:
Dec. 27, 1993
Frank Hunt, Walled Lake, MI (US);
Hitachi America, Ltd., Tarrytown, NY (US);
Abstract
A fuel control system is provided for an internal combustion engine having at least one combustion chamber, an intake air passageway, a multipoint fuel injector associated with each engine combustion chamber and a cold start fuel injector having a fuel outlet open to the intake air passageway. An air valve has an air inlet fluidly connected to the intake air passage and an air outlet fluidly connected to the cold start fuel injector. This air valve movable between an open position and a closed position where in the open position, air flow through the air valve is directed to the cold start fuel injector. During a cold start engine operating condition, air flow through the air valve and cold start fuel injector enhances fuel atomization of the fuel from the cold start fuel injector thereby reducing the desirable engine emissions, and particularly, hydrocarbon engine emissions.