If you didn't have a gearbox you would only be able to go one speed and that would be maybe 40 or 50 MPH and the engine would be revving dangerously high, also your gas mileage would be horrible.
gear box are using to change the various speeds in vehicles
It ensures that only one gear can be engaged at a time.
it"s just idle condition...the engine will be running > Usually to reverse the direction of rotation in a gearbox etc.
The purpose of a clutch on a vehicle is to disconnect the drive of the engine from the gearbox (this would be required when the vehicle is stationary or to change gear). While the engine is running the crankshaft is continually turning, It is the crankshaft that turns the gearbox and via the gearbox the road wheels. Obviously there are times when the engine is running but drive is not required, The clutch is the mechanism by which this is achieved.
gearbox
in the gearbox
i hate the word gearbox
gearbox!
A gearbox is another name for a transmission.
In the gearbox
The 1997 Honda Civic gearbox has a fluid capacity of 4.8 quarts. You can check the gearbox fluid level with the gearbox dipstick.
The logical explanation is to prevent both decouplers from extending at the same time.