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Active Combustion Control Valves

Active Combustion Control Valves by JASC

JASC’s Active Combustion Control Valves were developed to attenuate undesirable pressure pulses within the combustion chamber of a turbine engine. Active Combustion Control Valves are derived from patented JASC Servo Valve Technology that employ a robust and extremely reliable means for metering and modulating fuel flow over a broad range of conditions – all in a relatively compact and light-weight package. Active Combustion Control Valve System high-speed servo valves mounted on a manifold together with amplifier-drivers yields a system which is capable of controlling high-frequency pressure oscillations associated with combustion instabilities in lean-burn combustors and afterburners. Active Combustion Control Valve (ACCV) uses patented JASC clevis-valve technology to achieve a High-Speed Servo-Valve (HSSV) enabling single-port and multi-port (synchronous) flow-based frequency response up to 600 Hz @ <-10 dB.

  • Variant of JASC’s 3-Way EHSV to Achieve High-Speed Servo Valve (HSSV)
  • Operates on the Principle of Modulating Fuel Pressure Pulses Out of Phase with Combustion Pressure Pulses
  • Have Design Leading to 800 Hz and Higher Versions
  • Applications Include Both Industrial and Aircraft Turbine Engine

Active Combustion Control Valves, Figure 1 Active Combustion Control Valves, Figure 2

Specifications
Fuel Media Most jet-type liquid hydrocarbon fuels found in commercial airline and US military service
Demonstrated Response w/in 5 dB to 550 Hz and w/in 10 Db to 600 Hz using Liquid Fuel in the Lab (Modulation Strength of +/- 20% @ 300 pph)
Flow Rate[1] 20 to 300 pph (TDR=15) @ 100 ±10 PSID
Typical Modulation +/- 50% @ 50 pph; +/- 20% @ 200 pph
Frequency Response 1 dB @ 400 Hz, 0 dB @ 500 Hz
Maximum Inlet Pressure[2] 800 PSIG
Fuel Temperature -65° to +250 °F
Filtration 10 µm nominal, 25 µm absolute (integral to inlet fitting, supplied)
Dimensions 7.5” x 4.5” x 2.5”
Product Specifications (High Speed Servo Valve)
Natural Frequency[3] 400 Hz
Coil Excitation 0 to 600 mA
Command Input 0 to +10 Vdc
Power 30 to +30 Vdc, 1.0 A Max
Steady State Flow Linear with command
Weight approx. 4.5 lb
Part Number 101242
SpecificationsSpecifications

Research Products

  • Hydraulic Linear Actuator
  • Cavitating Pintle Valve
  • Pintle Metering Valve
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  • Active Combustion Control Valves
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Corporate Headquarters

2303 West Alameda Drive
Tempe, AZ 85282 USA

P: +1 602.438.4400

Sales:
sales@jasc-controls.com

Engineering:
engineering@jasc-controls.com

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