Voltage regulator tube for ignition system of internal combustion engine
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United States of America Patent
Stats
-
Apr 13, 1993
Grant Date -
N/A
app pub date -
May 26, 1992
filing date -
May 27, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A voltage regulator tube for an ignition system of an internal combustion engine, comprising: a cylindrical enclosure made of electrical insulating material and formed with a hollow extending therethrough; a first metallic sealing member for sealing one opening of the hollow, which is electrically connected to a secondary winding of an ignition coil; a first main electrode mounted on the first metallic sealing member in the hollow; a second metallic sealing member for sealing the other opening of the hollow, which is electrically connected to a spark plug; and a second main electrode which is mounted on the second metallic sealing member in the hollow such that the first and second main electrodes confront each other; wherein inert gas is hermetically filled in the hollow; wherein the following equation is satisfied: -1.5.ltoreq.0.8L-0.72R+3.11H-5.81.ltoreq.1.5 where character L denotes a distance between distal ends of the first and second main electrodes in mm, character R denotes a diameter of the first metallic sealing member in mm and character H denotes a height of the first main electrode in mm.
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