Fuel injection pump
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United States of America Patent
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Apr 1, 2008
Grant Date -
Jul 13, 2006
app pub date -
Nov 14, 2003
filing date -
Nov 21, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A fuel injection pump 100 comprises a thermoelement CSD 47 for advancing injection timing in a cold temperature condition. The CSD 47 uses a piston 46 for opening and closing a sub port 42 formed in a plunger barrel 8. An electronic governor 2 is provided with a mechanism for decreasing an injected fuel quantity when an engine starts in a cold temperature condition. The mechanism shifts a rack position in a fuel-decrease direction in a cold temperature condition, and switches the rack position to a normal position in a normal temperature condition. A timing TR for shifting the rack position is set before or simultaneous to a timing TC for switch-off of the CSD 47.
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