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:
Jun. 15, 2004
Filed:
Jun. 17, 2002
Chul-Ho Yu, Seoul, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A fuel injection control method using a system comprising a high-pressure pump for pumping fuel, a fuel-pressure control valve disposed in a fuel bypass line communicating an output port and an input port of said high-pressure pump, and a controller for regulating fuel pressure, is provided. The method comprises: monitoring engine operating conditions; determining an optimal fuel injection pressure on the basis of said monitored engine operating conditions; determining on/off timing and on/off duration of said fuel-pressure control valve such that fuel pressure inside a fuel rail approaches said optimal fuel injection pressure; and opening and closing said fuel-pressure control valve according to said determined on/off timing and on/off duration of said fuel-pressure control valve.