Fuel Feed System Description - MOTO GUZZI V11 SPORT MY 2003 Workshop Manual

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25 FUEL FEED SYSTEM DESCRIPTION

In the Weber injection-ignition system type "alfa/N" the
engine speed and the throttle position are used to
measure the quantity of air taken in; when the quantity
of air is known, the fuel quantity is dosed in relation with
the desired strength and the value read by the Lambda
Sensor. Other sensors in the system allow to adjust the
main operation, on particular condition. Moreover, the
engine speed and the throttle angle allow to calculate
the optimal ignition advance on every operation condition.
The quantity of air sucked from each cylinder per cycle,
depends on the air density in the suction manifold, on
the single displacement and on the volume efficiency.
The volume efficiency is experimentally calculated on
the whole operation field of the motor (rpm and engine
load) and is stored in the electronic unit. The control of
the injectors, each cylinder, is "time-sequenced", i.e. the
two injectors are controlled on the basis of the suction
sequence, while the delivery can already begin, for each
cylinder, from the expansion phase until the suction
phase, already begun. The timing for the initial delivery
is contained in the electronic unit.
Static inductive-discharge ugnition with dwell control
provided by the power module (in-built in the electronic
box) and ignition advance mapping stored in the
electronic box. The coils receive the control inputs from
the unit (that calculates the ignition advance) via the
power modules.
V11 S M 2003 - L
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R C - C
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M M 2003
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PORT ALLABIO VARIANTS