Ducati Monster 696 2009, Руководство пользователя

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section
M 1
4 Monster 696/696+ - M.Y. 2009 - edition 00
Fuel injection-ignition system
Siemens M3C fuel injection-ignition system
The Marelli injection-ignition system is the Alfa/N type, in which the engine speed and throttle position are used as the main
parameters for measuring the quantity of intake air. If the quantity of air is known, the quantity of fuel can be dosed accordingly
to obtain the required ratio. Additional sensors in the system (engine rpm, aspirated air pressure, air temperature, engine oil
temperature and lambda sensor to control CO level) are used to adjust the basic engine control strategy in accordance with the
operating conditions. The engine speed and the throttle angle are also used to calculate the optimal ignition advance for all
operating conditions. The quantity of air taken in by each cylinder during each cycle depends on the density of the air in the intake
manifold, the cylinder capacity and the volumetric efficiency.
The volumetric efficiency of the engine is determined experimentally throughout the entire range of operating conditions
(rotation speed and engine load conditions). The values obtained in this way are then used for the generation of a map which is
stored in the
Flash EPROM of the Siemens M3C ECU for injection control. The Flash Eprom can be programmed via CAN line.
Fuel injection control is of the phased sequential type, i.e. the injectors are not operated in parallel. Fuel delivery to each cylinder
may start during the expansion stroke and may extend up to after the beginning of the induction stroke. Fuel cut-off timing
(the time when the injectors are closed), is saved onto a special map, which is stored in the ECU
Flash Eprom . Ignition is of
the static inductive discharge type, featuring dwell time control so as to ensure coil charging at steady power Power modules
for coil power supply are included in the ECU hardware. Advance curves are stored in the ECU
Flash Eprom . Both coils and
power modules are controlled by the ECU, which calculates the ignition advance.
Notes
To test the components and wiring of the injection - ignition system, use the “DDS” tester, following the indications given in the
paragraph “Guided diagnosis” (Sect. D 5).
Key to the sensor position diagram
1 Injection ECU
2 Injection relay
3 Fuel pump
4 Lambda sensor (horizontal cylinder)
5 Engine temperature sensor
6 Air temperature sensor
7 Horizontal cylinder coil
8 Pressure sensor
9 Engine speed sensor
10 Vertical cylinder coil
11 Sparkplug
12 Throttle position sensor
13 Injectors
14 Lambda sensor (vertical cylinder)
NOx
CO
HC
pollutan
ts
rich mixture lean mixture
Ideal ratio