Ambient Air Pressure Sensor; Injector - KTM 1190 RC8 R EU/UK 2009 Repair Manual
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Also See for 1190 RC8 R EU/UK 2009:
- Owner's manual (283 pages) ,
- Owner's manual (281 pages) ,
- Owner's manual (272 pages)
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41/THROTTLE VALVE BODY
Ambient air pressure sensor
29.9
Injector
29.10
Installation location
–
The ambient air pressure sensor is located on the right-hand side of the frame.
Component description
–
The processing electronics and a measuring cell are located in the housing of the
ambient air pressure sensor. In the measuring cell a diaphragm encloses a refer-
ence pressure chamber. When the shape of the diaphragm is altered by external
pressure, the conductivity of the measuring resistors is altered and thus the mea-
sured voltage. The measured voltage is prepared by the processing electronics and
sent on to the EFI control unit.
900006-60
Pin overview
1
System voltage
2
Sensor ground
3
Signal wire
400659-10
Function description
–
The output voltage of the ambient air pressure sensor depends on the ambient air
pressure and is sent via the signal wire. The voltage signal rises when ambient air
pressure increases.
Ambient air pressure sensor voltage "PAAD"
at: 800 mbar (11.6 psi)
at: 850 mbar
(12.33 psi)
600725-10
at: 900 mbar
(13.05 psi)
at: 950 mbar
(13.78 psi)
at: 1,000 mbar
(14.5 psi)
at: 1,050 mbar
(15.23 psi)
Installation location
–
Injector cylinder 1
Injector cylinder 2
Component description
–
The injector consists of a solenoid, a spring loaded plunger, a needle valve and a
filter. When current flows through the coil in the solenoid, a magnetic field is gen-
erated which attracts the plunger, overcoming the spring force; this lifts the nee-
dle valve off its seat. Fuel is discharged through eight holes and forms two conical
jets. When the current is switched off, the magnetic field collapses and the spring
900027-61
closes the needle valve. The filter keeps any contamination out of the holes.
Pin overview
1
Control wire
2
System voltage
400598-10
2.97... 3.03 V
3.12... 3.18 V
3.27... 3.33 V
3.42... 3.48 V
3.57... 3.63 V
3.72... 3.78 V
is located on the rear throttle valve body.
is located on the front throttle valve body.
225
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