PEUGEOT Vivacity 50 CC 2 Stroke, Техническое учебное пособие, Страница: 10 / 24

ENGINE
8
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„ Petrol circuits.
„
Vacuum pump.
1. Fuel tank.
2. Petrol filter. 3. Vacuum pump.
4. Carburettor.
Functioning.
Under the effect of pulses, the diaphragm (1)
pumps in and out the fuel by means of reed
valves (2) and (3).
Safety.
When the ball (4) lifts, fuel can flow into the
pump when the needle valve closes inside the
carburettor or when there is a boost pressure at
the fuel pump outlet.
R
4
3
2
1
NC
NC
1
3
4
2