Fuel Pump Module

In Astra-H using the combined fuel pump module. It is used for gasoline and diesel engines on the options. Fuel pump module includes all components necessary to control the level and the fuel supply. In gasoline engines the fuel filter is installed in the module. For diesel engines using an external fuel filter, which is located in the engine compartment. Module for diesel engines is also different in that the pre-fuel pump is not used for engine Z 17 and Z 17 DTL DTN.

The design of the fuel pump module

Fig. 2.273. The design module of

the fuel pump: 1 - Line pre-fuel pump, 2 - upper body - the fuel pump module, 3 - lower body - the fuel pump module 4 - prefilter; 5 Float - Fuel Level

The chart below shows the approximate structure of the fuel pump module. Fuel pump module contains nodes that do not pertain to all models of the engine (Fig. 2.273).

Fuel pump, fuel pre -

Fig. 2.274. Opening access to the

fuel pump

At Astra-H, access to the fuel pump module for maintenance is provided through a hole located under the rear seat in the panel floor. Pillow rear seat must be removed to gain access to the hole (Fig. 2.274).

Fuel pump provisional fuel (roller pump)

Fig. 2.275. The design of the roller

pump: 1 - check valve, 2 - safety valve, and 3 - connecting to the mains, 4 - electric motor 5 - impeller

Fuel pump, fuel pre-installed in the fuel pump module. Problem of the fuel pump prior fuel is to bring enough fuel at a certain pressure on the inlet to the engine under all operating conditions. It consists of the lid with electrical connectors, check valve and an output socket. Cover is usually also includes carbon brushes needed for the electric motor and an element of noise reduction.

Requirements for the work of the roller pump: - Consumption of 60 to 200 l / h; - Pressure at the inlet to the fuel system from 3,0 to 4,5 bar.

Special tools

Fig. 2.276. Special tools