Fuel and ignition system 9112 · 2458 Fuel-pressure regulator

Fuel and ignition system 9112 2458 Fuel-pressure regulator The fuel pressure regulator is integral in the tank unit and has no connection for the intake-pipe pressure. The fuel pressure is 3.8 bar from idling to full load. The injec- tion rate is then also dependent on the in- take-pipe pressure. This is taken into con- sideration by the Motronic control unit when calculating the injection period. 2440 Injection valve (EV-6) A feature of this injection valve is its small overall size and low weight. Also on this injection valve, there is very low risk of v a- pour lock with hot fuel. This makes it very suitable for use on non-return fuel supply systems, as the fuel temperature in the injection valve here is higher compared to systems with return flow. The atomisation of the fuel is carried out by a spray-hole disk with 4 holes. The punched injection holes achieve high fuel injection rate consistency, as well as insensitivity to fuel deposits. Good valve sealing in the valve seat area is ensured by the cone/ball sealing principle. 2_01_02 1 – Hydraulic connection 2 – Sealing rings (O-rings) 3 – Filter screen 4 – Coil 5 – Spring 6 – Valve needle with magneto armature and sealing ball 7 – Spray-hole disk (4 hole) 8 – Electric connection 9 – Valve housing 10 – Valve seat 2 - 4 Service Information 2002