6
OPERATION No MA.IE. 144
- 00 : Churacteristics o/ the H L-Jetronic )) electronic
/uel injectian .system.
FUEL CIRCUIT
A multiple roller-valve pump ( 2 ) draws the fuel from tank ( 1) and provides the injection pressure,
A filter (4) is fitted to the system.
In the fuel return pipe, the pressure regulator ( 3) maintains, under fuel load! a relative constant fuel pressure of
2 bars ( 29 ‘psi ).
The pressure regulator is connected to the intake manifold by a flexible pipe0 This allows the difference of
pressure betw.een the fuel and the inlet manifold to remain constant.Thus the necessary quantity of fuel delivered
by the injectors ( 5) depends exclusively on its duration of opening.
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