gearbox

Thân thiện

The mechanic inspects the gearbox of the car.

Definition

Noun: 1. A protective metal casing containing a set of gears: A gearbox is the sealed housing that encloses and protects a system of gears, such as in a vehicle's transmission. 2. A transmission system: In common usage, "gearbox" often refers to the entire assembly of gears and related components responsible for transmitting and modifying power and torque from an engine to the drive wheels.

Usage Examples

• Noun:
  • The mechanic removed the gearbox to repair the damaged gears inside.
  • This car model has a manual gearbox with five forward speeds.
  • A loud grinding noise from the gearbox is a sign of serious trouble.

Advanced Usage

• "gearbox oil": The specialized lubricant used inside a gearbox.
  • The manual recommends changing the gearbox oil every 60,000 miles.
• In engineering contexts, "gearbox" can refer to similar sealed gear assemblies in industrial machinery, not just vehicles.

Variants and Related Words

• Transmission (n): A very close synonym, especially in automotive contexts. While a gearbox is technically the casing, "transmission" more commonly refers to the entire power-transfer system.
• Casing (n): The outer shell or housing.
• Housing (n): A structure that encloses and protects machinery.

Synonyms

• Transmission
• Gear case
• Gear housing

Related Phrases

• Manual gearbox: A transmission system where the driver manually selects gears using a clutch and gear lever.
• Automatic gearbox: A transmission system that changes gears automatically without driver input.

Học thuật

Noun

1. the shell (metal casing) in which a train of gears is sealed

Từ đồng nghĩa

• gear box
• gear case