PRE-RELEASE
Starting fuel
| Starting fuel |
| Pre-injection |
When the ignition is turned on, the fuel pump relay will operate for one second to build up fuel pressure.
As soon as the control module detects the crankshaft moving, there will be a simultaneous injection with all four injectors. The amount of fuel injected depends on the engine coolant temperature.
| Starter motor cranking |
As soon as the control module localizes the large hole in the armature, injection will be based on crankshaft angle.
The fuel quantity is still regulated by engine coolant temperature only and is decreased gradually as starter motor cranking continues.
Injection is interrupted if the accelerator is depressed fully. This makes it possible to rectify a flooded engine.
The engine is considered to have started as soon as the engine speed exceeds 650 rpm and the fuel quantity is then calculated using the mass air flow sensor as the main sensor.
