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Emergency lubrication system

  • US 7,387,189 B2
  • Filed: 08/14/2003
  • Issued: 06/17/2008
  • Est. Priority Date: 08/14/2003
  • Status: Active Grant
First Claim
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1. In a gas turbine engine having a controller which receives feedback signals from said engine and issues control signals in response thereto, a lubrication system lubricating a component during both normal operating conditions of said engine wherein a normal flow of lubricant is supplied to said component by said lubrication system, and malfunctioning conditions of said engine wherein said normal flow of lubricant supplied to said component by said lubrication system is disrupted, said lubrication system comprising:

  • a reservoir for holding a reserve quantity of lubricant, said reservoir having an inlet and an outlet;

    said inlet being closed during said malfunctioning condition to prevent backflow of lubricant from said reservoir through said inlet thereof;

    an air conduit providing fluid communication between a supply of pressurized air and the interior of said reservoir anda control valve responsive to signals provided by said engine controller to effect lubricant flow from the interior of said reservoir through said outlet to said component, said control valve being disposed in said air conduit and being closed for blocking flow of said pressurized air to the interior of said reservoir during normal engine operating conditions and opening to allow pressurization of said reservoir by said pressurized air during said malfunctioning conditions to establish an emergency flow of lubricant to said component.

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