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Fuel,
Emission and Exhaust System
D:06:01
EVAPORATIVE EMISSION CONTROL SYSTEM
P?WS]
SYSTEM DESCRIPTION
An evaporative emission control system consisting
of the fuel tank, vapour lines, vapour storage
cannister and a closed engine crankcase is used on
the De
Lorean.
The purpose of the system is to prevent fuel and oil
vapours from entering the atmosphere. All vapours
are stored within the system when the vehicle is
not running. During operation, the vapours are
purged from the system and burned in the engine.
(Fig. 41)
SYSTEM OPERATION
The entire fuel system is sealed to prevent fuel
vapour from escaping. Gasoline vapour in the fuel
tank is routed through the vapour separating hose
(2) and the roll-over valve (3) to a storage cannister
in the rear of the car. When the engine is not
running,
fuel vapours will remain in the storage
cannister.
In
the event of a roll-over accident, the roll-over
valve prevents liquid fuel from leaking out of the
fuel tank and travelling through the vapour hose to
the cannister (4).
i':;-^
/'V-**!
1 Vapour Outlet
2 Vapour Separating Hose
3 Roll-Over Valve
4 ' Vapour Hose to Cannister
Fig. 41
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