Section 05 ENGINE MANAGEMENT
Subsection 01 (OVERVIEW)
INTAKE MANIFOLD
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R1503motr313A
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INTAKE MANIFOLD
1. Electronic Control Unit (ECM ECU)
2. Fuel rail
3. Injector
4. Throttle body
5. Ignition coil
6. Manifold air pressure sensor (MAPS)
The intake manifold is mounted on the engine
block on the engine starboard side. It provides
support for the fuel injectors, the fuel rail, the
ECM ECU, the flame arrester and the throttle
body. The air intake manifold is a resonator be-
tween the throttle body and the air intake at the
cylinderheadwiththeflamearrester.
Fuel Rail
The fuel rail is a small tube on which the three
injectors are mounted. It ensures all the time, that
enough fuel at the right pressure can be delivered
to the fuel injectors. The fuel rail is fed by the fuel
pump with a fuel pressure of approximately 400
kPa (58 PSI).
Fuel Injector
Three fuel injectors (one per cylinder) are used to
inject fuel into the intake port of the cylinder head.
Flame Arrester
The flame arrester is a tube inside the air intake
manifold. It prevents flames leaving through the
intake system if the engine backfires.
Throttle Body
Itisa52mmthrottlebodymountedonintake
manifold. Fitted on the throttle body, there is the
TPS and the idle bypass valve which allows the
ECM ECU to control the RPM while the throttle
plate is closed. This throttle body is heated to pre-
vent the possibility of freezing.
FUEL PUMP MODULE
A32I0PA
The fuel pump modules is located inside the fuel
tank. The module includes fuel pump, fuel pres-
sure regulator and fuel level sensor.
Fuel Pump
It provides fuel pressure and flow rate to the sys-
tem.
Fuel Pressure Regulator
A fuel pressure regulator controls the pressure in
the system and allows the excess of fuel to return
to the fuel tank. The fuel pressure regulator reg-
ulates the fuel pressure at approximately 400 kPa
(58 PSI).
Fuel Pickups
Two fuel pickups come with 50 microns filter. One
is located at the front right side of the fuel tank and
the other at the rear left side. Also, an inline fuel
filter is installed between the fuel pump and fuel
rail.
170 Te m plat e
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