Checking fuel consumption using flowtronic equipment

CHECKING FUEL CONSUMPTION USING FLOWTRONIC EQUIPMENT

Check the fuel consumption proceeding as follows:

• Connect tool 1860955000 to the fuel injection system as described in the previous paragraph dealing with the injector leakage test.
• Position the FLOWTRONIC equipment on the fuel supply pipe between tool 1860955000 and the manifold (7) after having fitted the rapid attachments on the inlet and outlet pipes.
• Place the valve (3, 4, 5, 10, and 11) in an open position.
• Position a pressure regulator (15) (order number 7780352) on the fuel return line carrying out the connections shown in the diagram;.
• Disconnect the inlet vacuum pipe from the fuel pressure regulator and connect it to the regulator (15) socket (14).
• Operate the electric fuel pump (1) as described for the previous tests; then, acting on the adjustment screw (16), set the supply pressure at the nominal value (3 bar).
• Connect the tester for the FLOWTRONIC equipment (n° 1806149001) and road test the vehicle as follows:

1. The road test should be carried out a constant speeds of 90 and 120 km/h, on a flat road in wind free conditions.
2. The tyre inflation pressure should be correct and the vehicle should not be equipped with accessories on the exterior which alter the aerodynamics.
3. If air conditioning is fitted it should be swithced off.
4. It is vital for a constant speed to be maintained throughout the entire duration of the test, avoiding altering the accelerator as far as possible.

• Check that figures measured correspond to those given in Section 00 "Technical data".

1. Electric fuel pump
2. Fuel supply pipe
3. Ball valve
4. Fuel pressure micrometric adjustment valve
5. Ball valve
6. Connector for supply pipe on fuel manifold (7)
7. Fuel manifold
8. Connector for return pipe on fuel manifold (7)
9. Fuel return pipe
10. Fuel pressure micrometric adjustment valve
11. Ball valve
12. Plug
13. FLOWTRONIC equipment
14. Vacuum socket (to be connect to the inlet manifold)
15. Fuel pressure regulator (order n° 7780352)
16. Calibration screw