Definition

Noun: A throttle valve is a valve that regulates the supply of fuel or air to an engine, controlling its speed and power output.

Usage

The term throttle valve is used specifically in mechanical and automotive engineering contexts. It refers to the physical component within an engine's intake system. * In a car, the driver presses the accelerator pedal, which opens the throttle valve to allow more air into the engine. * A malfunctioning throttle valve can cause the engine to idle roughly or stall.

Examples

• The mechanic cleaned the carbon deposits from the throttle valve to restore engine performance.
• Modern electronic fuel injection systems use an electronically controlled throttle valve instead of a mechanical cable.

Advanced Usage

• "Throttle body": This is a common related term referring to the housing that contains the throttle valve. The valve itself is a component within the throttle body.
• "Drive-by-wire throttle": This describes a system where the throttle valve is operated by an electronic motor based on sensor input, not by a direct mechanical link from the accelerator pedal.

Variants and Related Words

• Throttle (noun/verb): Often used as a shorter, more general term. As a noun, it can be synonymous with the throttle valve or the entire throttle control mechanism. As a verb, it means to choke or strangle, or to control an engine's speed with a throttle.
• Butterfly valve: A common type of throttle valve design, consisting of a disc that rotates on a shaft to open and close the air passage.

Synonyms

• Butterfly valve (when referring to the specific disc-type design)
• Throttle plate
• Accelerator valve

Related Phrases

• "To open the throttle": To increase engine speed by opening the throttle valve wider.
• "At full throttle": With the throttle valve completely open, meaning the engine is producing maximum power.

Noun

1. a valve that regulates the supply of fuel to the engine