Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takayuki Fukushima0
Koji Ishizuka0
Takashi Kikutani0
Date of Patent
January 6, 2009
0Patent Application Number
107658920
Date Filed
January 29, 2004
0Patent Primary Examiner
Patent abstract
During a short duration injection, a triangular geometry is drawn in terms of the injection rate with respect to time, while a trapezoidal geometry is drawn during a long duration injection. The ON timing of the drive pulse is determined to be at a valve opening pressure achieving time before the start point of formation in time of the geometry. An injection pulse duration is determined from “the valve opening pressure achieving time+a needle rise time−a valve closing pressure achieving time,” and then the OFF timing of the drive pulse is determined.
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