5-2
FUEL SYSTEM
AND
THROTTLE BODY
FUEL DELIVERY SYSTEM
The fuel delivery system consists of the fuel tank, fuel pump, fuel filters, fuel feed hoses, fuel delivery pipe
(including fuel injector) and fuel pressure regulator. There is fuel return hose. The fuel in the fuel tank is
pumped up by the fuel pump and pressurized fuel flows into the injector installed in the
luel delivery pipe.
Fuel pressure is regulated by the fuel pressure regulator. As the fuel pressure applied to the fuel injector
(the
fuel pressure in the fuel delivery pipe) is always kept at absolute fuel pressure of 2.94 kgf/cm7 (294 kPa,
41.81
psi), the fuel is injected into the throttle body in conic dispersion when the injector opens according to
the injection signal from the
ECM.
The fuel relieved by the fuel pressure regulator flows back to the fuel tank.
iT!
(2)
(3)
-
(4'1
151
Fuel tank
Fuel filter (For fuel valve)
Fuel hose
Fuel return hose
Fuel pressure regulator
6
(I>
(8)
(9)
(r0'
Fuel delivery pipe
Fuel injector
Fuel feed hose
Fuel vapor return hose
Fuel filter (For fuel pump)
011
R)
(0)
iC)
iD)
-
Fuel
pi
-
Pressu
-
Before-pressurized fuel
Relieved fuel
Fuel vapor
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