High-pressure fuel pump control device and in-cylinder injection engine control device
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United States of America Patent
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-
Mar 4, 2003
Grant Date -
Jul 5, 2001
app pub date -
Dec 26, 2000
filing date -
Dec 24, 1999
priority date (Note) -
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Abstract
A high-pressure fuel pump accelerates a rise in fuel pressure from engine start-up to shorten an engine start-up time, reduce an exhaust gas substance and improve or increase an engine output. The high-pressure fuel pump is part of a control device which controls an in-cylinder injection engine having a fuel injection valve, a high-pressure fuel pump, and a crank angle sensor. The high-pressure fuel pump is provided with a plunger for pressurizing the fuel placed in the high-pressure fuel pump, a pump drive cam, and a cam angle sensor. A drive signal setting device outputs drive signals to the high-pressure fuel pump at least two or more times from the time of crank angle sensor signal detection to the determination time of the crank and cam angle sensor phases.
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