9-5 Aero (9600) L4-2.3L Turbo (B235) HO (2000)
Fuel Injector: Description and Operation
Injection Duration
Injection Duration
Fuel mass/combustion
The fuel mass to be supplied to the engine per combustion has been calculated. The value is divided by 0.76 and is now converted to ml/combustion. The
volume is accumulated for each combustion and the aggregate value is sent out on the bus. The main instrument unit uses the value for a correct fuel
gauge display and the information display uses the value to calculate fuel consumption.
Injector Opening Time
Fuel volume/combustion is convened into injector opening duration, based on knowledge of the injector flow at 3 bar differential pressure.
Injection Twice Per Combustion
Before the camshaft position has been detected injection takes place semi-sequentially at 1800 intervals. This means two cylinders at a time in the
following order:
1
Cylinders 1 and 4.
2
Cylinders 2 and 3.