FUEL INJECTION APPARATUS
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United States of America Patent
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Issued Date -
Jul 24, 2014
app pub date -
Jan 10, 2014
filing date -
Jan 21, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A control unit obtains approximation straight lines before and during the fuel injection with respect to a first injection and a second injection among multiple fuel injections based on a pressure variation in the fuel accumulator which is sampled by the pressure sensor. The control unit employs data of which correlation coefficient is higher among a pilot injection and a main injection and obtains a hypothetical injection-start point accurately. Based on the variation amount of the hypothetical injection start delay which is obtained from the hypothetical injection-start point, an energization-start timing and the target-energization period are corrected.
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