Glossary “throttle position sensor (TPS)” Definition:
Variable three wire, resistor type electrical sensor which sends a signal to the ECU relative to the throttle position.
throttle plate
Glossary “throttle plate” Definition:
Term used for throttle valve.
throttle linkage
Glossary “throttle linkage” Definition:
Connection between the accelerator pedal and the throttle. Also refers to the connection from the throttle to the A/T, using either a rod or cable.
throttle kicker actuator
Glossary “throttle kicker actuator” Definition:
Electric solenoid, controlled by the processor, supplies manifold vacuuum to the throttle kicker to adjust the idle RPM.
throttle hard stop
Glossary “throttle hard stop” Definition:
Throttle stop on which the throttle lever rests when the throttle is released. On most computer controlled vehicles, this adjustment point is sealed, and is not used to adjust idle speed.
throttle cut-out relay
Glossary “throttle cut-out relay” Definition:
Term used for WOT cut-out relay.
throttle body injection system (TBI)
Glossary “throttle body injection system (TBI)” Definition:
A fuel-injection system that resembles a carburetor and has fuel injector(s) located in a common throttle body. It provides many of the advantages of fuel injection, such as easier starting and lower emissions, without the cost and complexity of a multiport-injection system.
throttle body injection
Glossary “throttle body injection” Definition:
Term used for throttle-body injection system.
throttle body fuel injection (TBI)
Glossary “throttle body fuel injection (TBI)” Definition:
A fuel injection system in which one or two injectors are installed in a carburot like throttle body mounted on a conventional manifold. Fuel is sprayed at a constant pressure above the throttle plate(s) to mix with the incoming air.
throttle body
Glossary “throttle body” Definition:
Housing of the intake system that may or may not contain a fuel injection system. Housing that contains the fuel injector(s) used in a TBI system.
throttle
Glossary “throttle” Definition:
1). An accelerator pedal. 2). Plate that controls the volume of air entering an engine.
throat
Glossary “throat” Definition:
1). The lower part of a connecting rod. 2). A carburetor barrel.
threshold voltage level
Glossary “threshold voltage level” Definition:
The level a voltage must attain to activate a circuit or component
threshold limit value
Glossary “threshold limit value” Definition:
The percentage, in parts per million (ppm), of refrigeration in atmospheric air above which a human can become drowsy or have loss of concentration.
threshold
Glossary “threshold” Definition:
The minimum driving signal level at which a perceptible change will take place.
three way tailgate
Glossary “three way tailgate” Definition:
Can be operated as a tailgate with the glass fully down, or as a door with the glass up or down.
three way monolithic catalytic converter (TWC)
Glossary “three way monolithic catalytic converter (TWC)” Definition:
A converter that contains Rhodium in the first bed to reduce NOx emissions, and Platadium and Platinum in the second bed to change HC to H2O and CO to CO2. A monolithic Converter has a one piece construction.
three way catalyst (TWC)
Glossary “three way catalyst (TWC)” Definition:
A catalytic converter that oxidizes hydrocarbons and carbon monoxide and reduces oxides of nitrogen emissions. It has a chamber upstream handling reduction, and one downstream handling oxidation.
three stage topcoat system
Glossary “three stage topcoat system” Definition:
A topcoat system composed of a basecoat portion, a midcoat portion, and a transparent clearcoat portion. The VOC content of a three-stage topcoat system is determined by a special formula.
three speed transmission
Glossary “three speed transmission” Definition:
A transmission providing three forward-gear ratios, one reverse gear ratio and neutral.