LASER SHOCK PEENING APPLIED TO FUEL SYSTEM PUMP HEAD
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United States of America Patent
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Issued Date -
Aug 1, 2013
app pub date -
Jan 26, 2012
filing date -
Jan 26, 2012
priority date (Note) -
Abandoned
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Abstract
A fuel pump for pressurizing fuel and transporting the pressurized fuel to a common rail of an automotive engine is disclosed. The inner surface regions are processed by laser shock peening so that the fuel pump can provide a highly pressurized fuel to the common rail. The fuel pump includes an inlet check valve bore fluidly connected to a dome, the dome is fluidly connected to an outlet check valve bore, and the outlet check valve bore is fluidly connected to an outer check valve seat. A fuel-side surface of the fuel pump has a laser shock peened surface. The laser shock peened surface includes one or more of the fuel-side surface(s) of the inlet check valve bore, the dome, the outlet check valve bore, and/or the outlet check valve seat.
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