Air intake injection system
INJECTION-IGNITION SYSTEM
The injection-ignition system is of the "alpha/N” type. The motor r.p.m. and the throttle position are used as main
parameters to measure the amount of intake air to find the amount of fuel to be injected.
The amount of intake air for each cycle depends on the density of the air in the intake collector, the single displa-
cement and the volumetric efficiency: this last is determined experimentally on the engine for the entire functio-
ning range (rounds and engine load) and it is stored in the dimensioned plans (maps) inside the EPROM of the
electronic CPU.
The motor r.p.m. and the throttle angle also allow to calculate the ignition advance best suited for any functioning
condition.
The other system sensors (atmospheric pressure sensor, air temperature sensor, water temperature sensor and
trimmer sensor) allow to adjust the basic strategy, in specific functioning conditions.
The injector control is of a semi-sequential type, that is to say, the four injectors are controlled in couples accor-
ding to the intake sequence.
The ignition is of the static inductive charge type with control of coil charge time integrated into
the power modules inside the CPU.
INJECTION SYSTEM TECHNICAL CHARACTERISTICS
INJECTION TIME (INJECTION VOLUME)
The factors for the determination of the injection time are the basic injection time that is calculated on the basis
of the r.p.m. of the engine, the opening of the accelerator and various compensations that are determined accor-
ding to signals coming from various sensors that reveal the condition of the engine and the riding conditions.
- 3 -
D
Sensore posizione albero motore
TEMPO
INIEZIONE
DI BASE
Segnale velocità motore
Segnali vari
Segnale iniezione
Segnale apertura acceleratore
Sensore posizione acceleratore
Sensori vari
Iniettori
COMPENSA
ZIONE
TEMPO
INIEZIONE
FINALE
ECU
Camshaft position sensor
Injectors
Various sensors
Accelerator position sensor
BASIC
INJECTION
TIME
COMPEN-
SATION
FINAL
INJECTION
TI?E
Engine r.p.m. signal
Accelerator opening signal
Various signals
Injection signal
Summary of Contents for BRUTALE 750 ORO
Page 1: ...Motorcycle Workshop Manual MVAGUSTABRUTALE ORO S ...
Page 4: ......
Page 5: ... 1 General description A SECTION A Revision 0 ...
Page 14: ... 10 General description A ...
Page 15: ...B 1 Maintenance SECTION B Revision 0 ...
Page 22: ... 8 Maintenance B ...
Page 58: ... 44 Maintenance B FUEL PUMP ASSEMBLY ...
Page 108: ... 94 Maintenance B ...
Page 109: ... 1 Bodywork C SECTION C Revision 0 ...
Page 111: ...C Bodywork 3 FAIRING ASSEMBLY ...
Page 116: ... 8 Bodywork C FUEL TANK ...
Page 123: ...Bodywork 15 C AIR FILTER COMPARTMENT ...
Page 128: ... 20 Bodywork C TAIL UNIT ...
Page 132: ... 24 Bodywork C UNDER TAIL ASSEMBLY ...
Page 135: ...Bodywork Unscrew the under tale unit fixing screws Remove the under tale unit 27 C ...
Page 136: ... 28 Bodywork C ...
Page 137: ...Air intake injection system 1 D SECTION D Revision 0 ...
Page 155: ...Electrical system 1 E SECTION E Revision 0 ...
Page 159: ...Electrical system 5 E ELECTRICAL DIAGRAM ...
Page 201: ... 1 F Suspension and wheels SECTION F Revision 0 ...
Page 265: ...Frame 1 G SECTION G Revision 0 ...
Page 279: ...Frame 15 G ...
Page 285: ...Frame 21 G ...
Page 300: ... 36 Frame G ...
Page 301: ...H 1 Brakes SECTION H Revision 0 ...
Page 329: ...L 1 Cooling system and lubrication system SECTION L Revision 0 ...
Page 363: ...Special tools 1 M SECTION M Revision 0 ...
Page 366: ...Special tools M 4 ...
Page 368: ...Special tools M 6 ...
Page 370: ...Special tools M 8 ...
Page 372: ...Special tools M 10 ...
Page 373: ... 1 Torque pressures N SECTION N Revision 0 ...
Page 377: ...Diagnostics 1 O SECTION O Revision 0 ...