Throttle position sensor

TPS
A throttle position sensor (TPS) is a sensor used to monitor the air intake of an engine.wikipedia
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Engine control unit

ECUengine management systemEngine Control Module
Some engine control units (ECUs) also control the throttle position electronic throttle control (ETC) or "drive by wire" systems and if that is done the position sensor is used in a feedback loop to enable that control.
The throttle position sensor tells the ECU how far the throttle plate is opened when the accelerator (gas pedal) is pressed down.

Sensor

sensorsdetectorsensing
A throttle position sensor (TPS) is a sensor used to monitor the air intake of an engine.

Butterfly valve

butterfly valvesbutterflyactuated valve
The sensor is usually located on the butterfly spindle/shaft so that it can directly monitor the position of the throttle.

Electronic throttle control

throttle by wireelectronic throttleelectronically controlled
Some engine control units (ECUs) also control the throttle position electronic throttle control (ETC) or "drive by wire" systems and if that is done the position sensor is used in a feedback loop to enable that control. The accelerator pedal sensors are used in electronic throttle control or "drive by wire" systems, and the most common use of a wide open throttle sensor is for the kick-down function on automatic transmissions.

Drive by wire

drive-by-wireride by wiresteer-by-wire
Some engine control units (ECUs) also control the throttle position electronic throttle control (ETC) or "drive by wire" systems and if that is done the position sensor is used in a feedback loop to enable that control. The accelerator pedal sensors are used in electronic throttle control or "drive by wire" systems, and the most common use of a wide open throttle sensor is for the kick-down function on automatic transmissions.

Feedback

feedback loopfeedback loopsfeedback control
Some engine control units (ECUs) also control the throttle position electronic throttle control (ETC) or "drive by wire" systems and if that is done the position sensor is used in a feedback loop to enable that control.

Wide open throttle

wide openfloored throttlefull throttle
Related to the TPS are accelerator pedal sensors, which often include a wide open throttle (WOT) sensor.

Automatic transmission

automaticautomatic gearboxautomatic transmissions
The accelerator pedal sensors are used in electronic throttle control or "drive by wire" systems, and the most common use of a wide open throttle sensor is for the kick-down function on automatic transmissions.

Hall effect sensor

Hall sensorHall probeHall effect sensors
These modern non contact TPS include Hall effect sensors, inductive sensors, magnetoresistive and others.

Inductive sensor

Inductive non-contact position sensorsinductive proximity sensorinductive sensors
These modern non contact TPS include Hall effect sensors, inductive sensors, magnetoresistive and others.

Magnetoresistance

magnetoresistive(Magneto Resistive)AMR
These modern non contact TPS include Hall effect sensors, inductive sensors, magnetoresistive and others.

Potentiometer

rheostatpotentiometersvariable resistor
In the potentiometric type sensors, a multi-finger metal brush/rake is in contact with a resistive strip, while the butterfly valve is turned from the lower mechanical stop (minimum air position) to WOT, there is a change in the resistance and this change in resistance is given as the input to the ECU.

Hall effect

Hall coefficientHall-effectCorbino effect
Non contact type TPS work on the principle of Hall effect or inductive sensors, or magnetoresistive technologies, wherein generally the magnet or inductive loop is the dynamic part which is mounted on the butterfly valve throttle spindle/shaft gear and the sensor & signal processing circuit board is mounted within the ETC gear box cover and is stationary.

Rare-earth magnet

rare earth magnetrare earthrare-earth permanent magnet
Normally a two pole rare-earth magnet is used for the TPS due to their high Curie temperatures required in the under-hood vehicle environment.

Curie temperature

Curie pointbelow −183 °CCurie
Normally a two pole rare-earth magnet is used for the TPS due to their high Curie temperatures required in the under-hood vehicle environment.

Toyota Supra

Toyota Celica SupraSupraToyota Supra Turbo
The engine received a redesigned throttle position sensor (TPS) as well as a new EGR system and knock sensor.

MegaSquirt

The assembled controller takes input from several sensors in order to manage the fuel injectors, including a throttle position sensor (TPS), exhaust gas oxygen sensor (EGO or O 2 sensor), MAP sensor, tach signal (or crank position sensor), intake air temperature sensor (IAT), and a coolant temperature sensor (CLT).

Throttle

throttle bodyacceleratorthrottle bodies
Often a throttle position sensor (TPS) is connected to the shaft of the throttle plate to provide the ECU with information on whether the throttle is in the idle position, wide-open throttle (WOT) position, or somewhere in between these extremes.

Löwe Automobil

Löwe
Löwe Automobil products include mass flow sensors, fuel pressure regulators, oxygen sensors, universal oxygen sensors, idle speed controllers, and throttle position sensors.

GM Family II engine

Family IIC20XEFamily II engine
The engine was also equipped with a different throttle position sensor (six pin, as opposed to three), and a different coolant temperature sensor (which was black, as opposed to the normal light blue colour).

Trionic

Combustion detection moduleMain instrument unitTrionic T7