Erroneous connection detecting method of ignition devices and apparatus of the same
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United States of America Patent
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-
May 6, 2008
Grant Date -
Dec 13, 2007
app pub date -
Oct 13, 2006
filing date -
Jun 13, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and an apparatus detect an erroneous connection between a plurality of ignition devices and a fuel injection control device. A first time interval is measured from an input of an ignition signal for a certain cylinder to an input of the next ignition signal and a second time interval from an input of the next ignition signal to an input of a further next ignition signal. An erroneous connection is determined by comparing a relationship between the first time interval and the second time interval with a previously stored normal relationship between the first time interval and the second time interval that are correctly connected in accordance with a predetermined procedure. The erroneous connection is outputted and displayed to a predetermined erroneous connection display device if it is determined that the erroneous connection exists.
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