yóu​mén

accelerator

油门 (油門) yóu​mén
accelerator noun
the pedal or mechanism in a vehicle that controls the flow of fuel to the engine to regulate speed; gas pedal or throttle

He stepped hard on the accelerator, and the car lunged forward.

Frequency

Movie subtitles
3.91 per million appears in 2% of films
Written text
3.95 per million

Sources

Definitions
CC-CEDICT