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Core Inlet Guide Vane Actuator

Brand: Parker Hannifin

The function of the core inlet guide vane (CIGV) actuator is to mechanically position the inlet guide vanes when commanded by the full authority digital engine control (FADEC). 

During normal operation, the actuators are modulated according to the FADEC based upon feedback from the master’s linear variable differential transformer (LVDT) signal. 

Typically, there are two types of CIGV actuators, master and slave.  The master is the only one that contains an electro hydraulic servo valve (EHSV) and a LVDT position sensor provides electrical feedback to the FADEC.

Generally, core inlet guide vane (CIGV) actuators are fuel or oil operated. Fuel enters the EHSV cavity of the spool/sleeve area through the “P” inlet port. 

Electrical signals sent to the dual-coil servo from the full authority digital engine control (FADEC) cause the servo to modulate pressures Control 1 (C1) and Control 2 (C2). 

C1 and C2 are connected to the two chambers of the actuator piston.
  • Features of the core inlet guide vane (CIGV) actuator include: 
  • Use of light weight, high strength 2618-T61 aluminum alloy bar for the piston cylinder/housing; proven to be light weight and high strength in numerous engine actuator applications 
  • Piston made from high purity 15-5 PH grade stainless steel with tungsten carbide plated (no chrome) shaft seal surfaces to enhance reliability and service life 
  • Sizing and geometry of internal fluid flow passages have been optimized to minimize pressure losses, improving efficiency 
  • High-reliability, high-performance Parker Jet-Pipe® EHSV, capable of superior low-temperature performance and chip shear force to ensure valve operation under all conditions 
  • Sealing system proven to have low-external leakage, minimal friction, and reduced contamination  
  • LVDT adjustment feature which guarantees actuator-LVDT assembly and interface accuracy 
  • Internally-routed LVDT wiring prevents EMI and RFI related issues; provides superior wire management for vibration resistance and prevents damage during handling and installation 
  • Dual connectors, dual LVDT dual-servo coils

Specifications

Bore Size (inch)

  • 2.6”

Flow Rate

  • 8.5 gpm at 400 psid

Maximum Pressure (psig)

  • 1,802 psig

Operating Pressure (psig)

  • 1,750 psig

Stroke Range

  • 3.1”

Weight (Lbs)

  • 6.45 lbs

  • Commercial Aircraft Engines
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