according to the desired torque specied by the driver. The Motronic ECU
calculates the amount of fuel to be injected from the drawn-in air mass and
performs an additional correction via lambda control. In this mode of operation,
a torque increase of up to 5% is possible. Both the thermodynamic cooling
effect of the fuel vaporizing directly in the combustion chamber, and the higher
compression of the engine with gasoline direct injection, play a role in this.
For these different operating modes, two central demands are raised for
engine control:
1. The injection point must be adjustable between ‘late’ (during the
compression ...
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