Definition: The word "gearbox" refers to a component in an automobile or other motor vehicle that allows the transmission to change gears while maintaining smooth operation of the vehicle. Gearboxes are typically made up of several components, including a transmission box, a shifting gear (such as a clutch), and a pair of seals for securing the shifting gears together. The shifting gears themselves typically consist of two halves: one is the input gear, which engages into the output shaft when the driver presses down on the clutch pedal to enter or exit gear. The other is the output gear, which connects directly to the transmission's output shaft and allows it to rotate faster or slower than the input gear. The term "gearbox" has a long history of being used in automotive literature, where different definitions are sometimes used depending on context. For example, some sources use "transmission box," while others use "shifting gear." Additionally, the specific components that make up a gearbox can vary widely between vehicles, with the input and output gears typically designed differently. Overall, the term "gearbox" is used in many different contexts within automotive mechanics and engineering.
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