I think you are referring to a shift solenoid on a car. If so, this sends signals to the transmission computer to tell it when to shift gears either higher or lower depending on demand such as going uphill, passing or reaching cruise speed.
celluloid is plastic
The Celluloid Closet was created in 1995.
The End of Celluloid was created in 2004.
Celluloid Records was created in 1976.
The duration of The Celluloid Closet is 1.78 hours.
The duration of Romance of Celluloid is 600.0 seconds.
Romance of Celluloid was created on 1937-08-27.
Celluloid Heroes was created on 1972-11-24.
Another Romance of Celluloid was created in 1938.
Celluloid is a man-made plastic comprised primarily of nitrocellulose and camphor.
The duration of Another Romance of Celluloid is 660.0 seconds.
Celluloid contains nitrogen while cellophane does not