曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
removed five minutes after APR arming.
During takeoff, the APR system monitors the N1 rpm of both engines through the
DCUs. If an N1 rpm drop below 67.6% rpm is sensed at either engine, the system
automatically commands both engines to increase N1 speed. Only the normally
operating engine can respond, which it does by increasing the N1 fan speed by a
minimum of 2%. This increase in rpm equates to an increase of approximately 500
pounds of thrust. No roll-back in N1 rpm occurs when APR thrust has been
commanded and the APR system times-out.
When the APR system is activated, a green APR icon appears in the center of the N1
gauge of the operating engine.
APR Test
The APR TEST switches allow the system to be tested on the ground. The system can
only be tested successfully with the engines operating. Normal system test operation
results in the APR TEST 1 (2) (3) OK advisory EICAS message. If the system fails, an
APR INOP caution EICAS message is displayed.
ENGINE CONTROL Panel
Figure 18-4
TEST
2
TE
ARM
TEST OFF
3
TEST
1 TEST
APR VIB
OFF
ON
ENG
SPEED
LH RH
ENGINE CONTROL
A
OFF OFF
O
P604_18_024
APR Switches
POWER PLANT
18-8 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
Engine Oil System
Description
Oil from each engine nacelle tank is circulated under pressure to lubricate the engine
and accessory gearbox.
Components and Operation
The gearbox-driven main lubrication pump pressurizes the lubrication system. Oil
flows from the pump, through an oil filter, a fuel/oil heat exchanger and continues
through the engine sumps to the bearings and gearbox.
The oil is returned to the oil tank by the gearbox-driven main lubrication and scavenge
pumps. The oil passes through scavenge screens for filtering prior to the oil pumps.
The oil then flows through a chip detector and a deaerator to the tank. Maximum oil
consumption is 6.4 ounces or 0.05 US gallons/hour.
Engine oil pressure and temperature indications are presented on the EICAS primary
page. To provide system redundancy, a pressure switch and separate pressure
transmitter are used to monitor the engine oil pressure. When low oil pressure is
detected by the pressure switch, the L(R) ENG OIL PRESS warning EICAS message
is presented. If the pressure transmitter detects low oil pressure, the EICAS digital oil
pressure readout changes to red.
Chip detector and impending oil filter bypass indications are provided in the aft
equipment bay on Junction Box 5 (JB-5) but are not presented on EICAS.
Pressurized refilling of the engine oil tanks is provided by a replenishment tank system
located in the aft equipment bay. The system remotely gauges engine oil tank level and
is used to transfer oil to the engine-mounted tanks.
POWER PLANT
For Training Purposes Only
Jan 04
18-9
P I LOT T R A I N I N G GU I D E
Oil System Schematic
Figure 18-5
REPLENISHMENT
OIL TANK
STORAGE
OIL TANK
L ENGINE OIL PRESS
FF
OIL PRESS
OIL TEMP 115
82
3500 3500
10
115
OIL PRESS
OIL TEMP
FAN VIB 1.2
115
10 82
115
1.2
P604_18_004
Fuel/oil Heat
Exchanger
“ENGINE
Supply and OIL”
Scavenge Pump
to Other
Engine
Oil Filter
Note: Left Engine Illustrated
Fuel
Scavenge
to Bearings
and Accessory
Gearbox
Oil Pump
Element
Differential
Pressure
Switch/
Transmitter
Selector
Valve
LEGEND
Temperature
Sensor
Cooled
Supply
Scavenge
Supply
POWER PLANT
18-10 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
Engine Oil Replenishment System
The Challenger 604 is equipped with an oil replenishment system located in the aft
equipment bay. The system consists of a replenishment tank holding approximately
6.0 U.S. quarts of oil, a pump, selector valve, and control panel.
If a low oil tank quantity is indicated during the test, the nacelle oil tanks can be filled
from the replenishment tank. Pump and selector valves, located next to the
replenishment tank, are used to transfer oil from the replenishment tank to the
applicable engine-mounted tank.
Engine Oil Replenishment Procedure
Oil levels should be checked between 15 minutes to two hours after engine shutdown.
The engines must be motored if the replenishment period is exceeded. Maximum refill
allowable is 2 U.S. quarts, then the engine must be dry-motored for at least 30 seconds
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
庞巴迪挑战者手册2(29)
