Car Tech A to Z: G is for gearbox
The letter G in our A to Z of car tech examines how gearboxes work
The technology contained within the modern motor car can be both fascinating and slightly baffling. Most such technology exists to make our cars safer, more efficient and just better than ever to drive but some of it can be quite confusing for the average motorist. In this A to Z series we will attempt to unravel the mystery of technology that is the modern motor car. This week, we’re visiting the letter G…
G is for…gearbox. Also known as the transmission, in simple terms a gearbox is what transfers the output of an engine to the driven wheels of a vehicle. The gearbox is connected to the crankshaft of an engine via a flywheel, and it then transmits that engine’s outputs via a clutch to a driveshaft, and then via a differential to the driven wheels.
In a rear or four-wheel-drive car where the engine is in the front, a propshaft is also deployed to transfer the engine’s power from the gearbox to the rear driveshafts.
A gearbox has different size ratios, known as gears, which enable the engine’s output to be deployed at the same revs but at increased or decreased road speeds.
G is for…Gaydon. Gaydon is the advanced design and engineering facility and home to Land Rover design. It also boasts the UK's largest hybrid engineering team and employs around 9200 people in total.
As well as the design studios, Gaydon also hosts JLR’s chassis and body engineering plants, its CAD workstations, a virtual-reality suite, climatic wind tunnels, rig-test and engine test beds, an electro-magnetic chamber and materials laboratories. There is also an extensive test track including an off-road facility.
Next, the letter H…
- 1IntroductionThe ultimate A to Z guide to the latest car technology, helping car buyers bust through the jargon and understand the benefits
- 2A is for adaptive cruise control, ABS, airbags and more...The letter A in our A to Z of Car Tech explains adaptive cruise control, ABS brakes, Adaptive Terrain response and auto dimming mirrors
- 3B is for Blind Spot Monitoring, brakes and moreThe letter B in our A to Z of car tech series...
- 4C is for chassis, connectivity and moreThe letter C in our A to Z of car tech explains chassis tech, connectivity, cruise control and carbon fibre
- 5D is for diesel, dampers and moreThe letter D in our A to Z of car tech explains diesel, dampers, dynamic drive and designers
- 6E is for electric vehicles, engines and moreThe letter E in our A to Z of car tech explains electric vehicles, economy modes, engines and exhausts...
- 7F is for fly-by-wire, four-wheel drive and moreThe letter F in our A to Z of car tech series is for four-wheel drive, fly-by-wire and future technology.
- 8G is for gearbox, and more - currently readingThe letter G in our A to Z of car tech examines how gearboxes work
- 9H is for headlights, head up display and moreThe letter H in our A to Z of car tech series explains headlights, head up displays and hill descent control
- 10I is for Inconel and in-car protectionThe letter I in our A to Z of car tech explains the nickel-chromium alloy Inconel, plus in-car protection in the form of airbags