Piper Arrow PA-28R-201 Pilot Operating Handbook page 184

ARROW
PA-28R-201,
7.7
INDUCTION
The
induction system
injector. The injector is based on the principle of differential pressure, which
balances air pressure against fuel pressure. The regulated fuel pressure
established by the servo valve when
makes the fuel flow proportional
system)
regulation by the servo valve causes a minimal
throughout the metering system. Metering
most vapor forming
allow use of a diaphragm pump. The servo system featurealso checks vapor
lock and associated starting problems.
The servo regulation meters fuel flow proportionally with airflow and
maintains the mixture as manually
dividerreceivesmetered fueland distributes fuelto each cylinder fuelnozzle.
The fuel flow portion of the manifold
connected to the flow divider and monitors fuel pressure. This instrument
converts fuel pressure to an indication of fuel flow in gallons per hour and
percentage of rated horsepower.
The alternate air source of the induction system contains a door that
functions automatically or manually. If the primary source is obstructed, the
door will open automatically. It may
selector on the right side of the quadrant. The primary source should always
be used for takeoff.
The pilot should read and follow the procedures recommended
Operator's Manual
Lycoming
engine efficiency and time between engine overhauls.
ISSUED: JULY
12,1995
HB-PQY, Page: 7-3-(0)
SYSTEM
incorporates a Bendix
applied across a fuel control (jetting
conditions while fuel inlet pressure is low enough
set for all engine speeds. The fuel flow
be opened
for this engine, in order to obtain maximum
DESCRJOPERATION
RSA-5AD1
to airflow. Fuel pressure
drop in fuel pressure
pressure is maintained above
pressure/fuel flow gauge
manually by moving
REPORT:
Issued: JULY 12, 1995
SECTION 7
type fuel
to
is
the
in the
VB-1612
7-3
7-3