Further Aircraft Information:
L/N: 1018
C/N: 41077
Type: B777-31H(ER)
Hex: 896213
Sel-Cal: BF-EM
Delivery Route:
KPAE HUH J534 KANOO J534 HUTON J534 YXJ 6000N 12100W 6500N 11800W 7000N 11500W 7400N 11000W 8100N 9000W 8200N 8000W 8300N 6000W 8300N 4000W 8200N 2000W 8000N 0000E BJO MAGIR SDA P65 VANOS A74 PELOR G476 PILAN G476 UREPI B958 BD BD3T SW BD3T GEKLA BD3T DK BD3T FV R11 PT G724 ST R120 MEKAN N39 RADAL UL125 ANK W32 BND A419 DARAX OMDB
An EGR valve position control system includes an EGR removal valve manager responsive to an EGR valve command to drive an EGR valve actuator. The EGR valve manager is operable to schedule control gains as a function of valve actuation direction to provide for faster response during valve closing events. Valve closing events are also staged such that a large valve position step is followed by a steady ramp to the valve closed position to thereby prevent damage to the valve and/or valve seat. The EGR valve manager further includes a prioritized switching feature for strategically switching between closed and open loop control modes, and a forward gain adjustment feature responsive to battery voltage to maintain constant system DC gain under changing battery voltage conditions.
ReplyDelete