SYM 4
. ELECTRONICALLY CONTROLLED CARBURETOR SYSTEM
4-7
Throttle position sensor illustration
Throttle position sensor illustration
Basic Principle
Throttle position sensor is a rotary variable resistance, the resistance value and the voltage value will be
change when rotate the TPS, the voltage values to reflect that how much throttle position opened,
feedback measuring throttle position to the ECU as the basis of control engine.
Throttle position sensor basic illustration
1.Use of ECU provide DC 5V power supply, a total of three pin plug, 1 branch voltage output pin; 1 for the
grounding pin;1 for .
2.Its main composition is a precise variable resistance
3.Device on carburetor , provide perceive to ECU and judge the APP PID of throttle, according to the
signal to control the valve capacity and the angle of ignition.
4.Device nearby the carburetor, Through the carburetor throttle turns, the linear change of output voltage
signal, supply Electronic control unit and ignition Angle.
ET SENSOR
TPS
O
2
SENSOR
Ignition coil
ACG/FLY
WHEEL
Spark
plug
CPS
CPSCPS
CPS
ECU
BATTERY
TPS
TPSTPS
TPS ECU
ECUECU
ECU
5V
5V5V
5V
VC
VCVC
VC
VTA
VTAVTA
VTA
E
EE
E
The output voltage
The output voltage The output voltage
The output voltage
characteristic of TPS
characteristic of TPScharacteristic of TPS
characteristic of TPS
VOLT
VOLT
VOLT
VOLT
0
00
0
2
22
2
4
44
4
6
66
6
50
5050
50 100
100100
100 150
150150
150
The throttle opening
The throttle opening The throttle opening
The throttle opening
Angle
AngleAngle
Angle
To Next Page
Loading...
