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ENGINE 1.3L QUADRAJET (90PS)
71
3A.1.5.2 COMPONENTS
1. HIGH PRESSURE FUEL INJECTION PUMP (FIP)
AND CONTROL
Type:
The CP1 H pressure pump (1) is the radial jet type
with three radial pistons (total capacity 0.697 cc) and
is controlled by the camshaft by means of an Oldham
joint (2); there are no timing positions. There is a fuel
pressure regulator (3) fitted on the pump connected to
the injection control unit for modulating the flow rate.
Note:
The fuel pressure regulator is an integral part of
the pressure pump and therefore no removing-
refitting operations are permitted.
Structure
Each pumping unit consists of:
- a piston (1) operated by a cam (2) in one piece
with the pump shaft (3);
- a plate-type intake valve (4);
- a ball delivery valve (5).
Because the pressure pump must be fed at a pressure
of at least 0.7 bar, the fuel system is equipped with an
auxiliary fuel pump submerged in the tank.
The maximum delivery pressure reaches 1600 bar.
The pressure pump is lubricated and cooled by the
fuel via special channels.