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COIL TYPE FUEL GAUGE
r
The
GS1100GL
is equipped with an electro-magnetic oil damped fuel gauge.
This type of
instrument
differs from the t y p e previously used and does not return to the "E" position when the ignition switch is
turned off.
OPERATION
SENDING UNIT
When the ignition switch is turned on, the resistance from
the
fuel tank float assembly will
vary
with the
r
amount of fuel in the tank.
FUEL GAUGE
As shown in Fig,l,
four
coils are located in the fuel
gauge (NI , N2, N3 and
N4). As the resistance from the
sending unit varies along with the fuel level, the current a t points L1 and
L2
will also
vary,
This in turn
will cause the strength
o f
the magnetic field generated in the four coils to increase or decrease (causing
a
/-
r e l a t d increase or decrease in the force vector H in Fig.2) which will force the needle
t o move to
the
pro-
per position (Fig.3).
When the ignition is turned off, the pointer remains in the position where i t was when zhe switch was
ON.
This function is displayed by
using high-viscosity oil
and a balanced magnet (Fig.4).
FUEL LEVEL SYSTEM
The Fuel Level System can be divided into two sections:
( I )
The Fuel Meter: Located in the instrument cluster
(2) The Fuel Tank
Float Assembly (Fuel gauge sending unit)
I
I
-
Y/B
I
5
Fig. 1
f~
IN4
I '
/
, '
+ - - .
- -
t r ~
+
hz
I
Fig.
2
h2
(Nz 1
I
Fig, 4
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