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System and method for operating a turbo-charged engine

  • US 7,296,555 B2
  • Filed: 08/25/2005
  • Issued: 11/20/2007
  • Est. Priority Date: 08/25/2005
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • injecting a first quantity of fuel into an engine cylinder at a first predetermined time during a second half of a compression stroke before a piston of the engine cylinder reaches top dead center of the compression stroke, wherein injecting the first quantity of fuel comprises injecting a pilot fuel quantity of about 1 to 5 percent of a fuel quantity; and

    injecting a second quantity of fuel into the engine cylinder at a second predetermined time after the first predetermined time when the piston is advanced by a predetermined advance value before the piston reaches the top dead center of the compression stroke, wherein injecting the second quantity of fuel comprises injecting a majority fuel quantity of about 95 to 99 percent of the fuel quantity.

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