FEATURES
1-5
EAS1SL5016
FI SYSTEM
The fuel pump delivers fuel to the fuel injector via the fuel filter. The pressure regulator maintains the
fuel pressure that is applied to the fuel injector at only 324 kPa (3.24 kgf/cm
2
, 47.0 psi). Accordingly,
when the energizing signal from the ECU energizes the fuel injector, the fuel passage opens, causing
the fuel to be injected into the intake manifold only during the time the passage remains open. There-
fore, the longer the length of time the fuel injector is energized (injection duration), the greater the
volume of fuel that is supplied. Conversely, the shorter the length of time the fuel injector is energized
(injection duration), the lesser the volume of fuel that is supplied.
The injection duration and the injection timing are controlled by the ECU. Signals input from the throt-
tle position sensor, the coolant temperature sensor, the crankshaft position sensor, the intake air
pressure sensor, and the intake air temperature sensor enable the ECU to determine the injection
duration. The injection timing is determined through the signals from the crankshaft position sensor.
As a result, the volume of fuel that is required by the engine can be supplied at all times in accordance
with the driving conditions.
1. Fuel pump
2. Fuel injector
3. ECU
4. Throttle position sensor
5. Coolant temperature sensor
6. Crankshaft position sensor
7. Intake air pressure sensor
8. Throttle body
9. Intake air temperature sensor
10.Air filter case
A. Fuel system
B. Intake system
C. Control system
1
2
3
5
6
7
8
9
10
A
B
C
4
Содержание YZ450FF 1SL-28199-11
Страница 6: ...EAS1SL5006 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Страница 10: ......
Страница 38: ...CLEANING AND STORAGE 1 26...
Страница 66: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Страница 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29...
Страница 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31...
Страница 71: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 32 1 Camshaft 2 Oil pressure check bolt 3 Oil filter element 4 Oil pump...
Страница 72: ...CABLE ROUTING DIAGRAM 2 33 EAS1SL5066 CABLE ROUTING DIAGRAM...
Страница 74: ...CABLE ROUTING DIAGRAM 2 35...
Страница 76: ...CABLE ROUTING DIAGRAM 2 37...
Страница 78: ...CABLE ROUTING DIAGRAM 2 39...
Страница 80: ...CABLE ROUTING DIAGRAM 2 41...
Страница 82: ...CABLE ROUTING DIAGRAM 2 43...
Страница 122: ...ELECTRICAL SYSTEM 3 38...
Страница 135: ...REAR WHEEL 4 11 1 2...
Страница 157: ...HANDLEBAR 4 33 For installation reverse the removal proce dure Removing the handlebar Order Part name Q ty Remarks...
Страница 192: ...CHAIN DRIVE 4 68...
Страница 278: ...WATER PUMP 6 7...
Страница 290: ......
Страница 297: ...CHARGING SYSTEM 8 7 2 AC magneto 3 Rectifier regulator 4 Joint connector 5 Condenser...
Страница 299: ...CHARGING SYSTEM 8 9...
Страница 325: ...FUEL PUMP SYSTEM 8 35...
Страница 326: ...ELECTRICAL COMPONENTS 8 36 EAS1SL5334 ELECTRICAL COMPONENTS EAS1SL5335 9 10 1 2 3 4 5 6 7 8...
Страница 328: ...ELECTRICAL COMPONENTS 8 38 EAS1SL5336 CHECKING THE SWITCHES B Y P Sb 2 1...
Страница 329: ...ELECTRICAL COMPONENTS 8 39 1 Engine stop switch 2 Neutral switch...
Страница 344: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7...