Pneumatic
Pneumatic (compressed air) systems are rarely found in passenger cars. Larger vehicles often use air brakes and the pressure may be used to drive other systems. Windshield wipers, automatic gear boxes, and other common hydraulic or vacuum powered accessories are often adapted. On buses where the engine is often at the rear of the vehicle, compressed air may be used for the throttle and clutch.
Bus doors are typically air powered, as well as the steps and the suspension, allowing the bus to lower itself or "kneel" at stops to allow passengers on or off.
Read more about this topic: Automobile Accessory Power
Famous quotes containing the word pneumatic:
“Uncorseted, her friendly bust
Gives promise of pneumatic bliss.”
—T.S. (Thomas Stearns)
“Food probably has a very great influence on the condition of men. Wine exercises a more visible influence, food does it more slowly but perhaps just as surely. Who knows if a well-prepared soup was not responsible for the pneumatic pump or a poor one for a war?”
—G.C. (Georg Christoph)
“Grishkin is nice: her Russian eye
Is underlined for emphasis;
Uncorseted, her friendly lust
Gives promise of pneumatic bliss.”
—T.S. (Thomas Stearns)