Automobile transmissions

automatic transmission that can change seamlessly through a continuous range of effective gear ratios

type of motor vehicle transmission that automatically changes gear ratio as the vehicle moves

motor vehicle manual gearbox; stick shift

type of automobile transmission that combines manual transmission and automatic transmission

electromechanically operated valve

thumb | right A hill-holder is a motor vehicle device that holds the brake until the clutch is at the friction point, making it easier for a stationary vehicle to start uphill. By holding the brake in position while the vehicle is put into gear, it prevents rollback. The hill-holder was invented by Wagner Electric and manufactured by Bendix Brake Company in South Bend, Indiana.

type of manual transmission

Selespeed is the name of an automated manual transmission used in Alfa Romeo cars, developed by Italian company Magneti Marelli and made by Graziano Trasmissioni.

fluid used in vehicles for self-shifting or automatic transmissions

thumb|Sectioned 3-speed manual 'crash' gearbox, for a car c. 1935 A layshaft is an intermediate shaft within a gearbox that carries gears, but does not transfer the primary drive of the gearbox either in or out of the gearbox. Layshafts are best known through their use in car gearboxes, where they were a ubiquitous part of the rear-wheel drive layout. With the shift to front-wheel drive, the use of layshafts is now rarer.

DEXRON is the trade name for a group of technical specifications for automatic transmission fluid (ATF) created by General Motors (GM). The name was first registered as a trademark and later evolved into a brand of GM. GM licenses the name and specifications to companies that manufacture the fluid and sell it under their own brand names. Not all DEXRON fluids are licensed by GM for reselling under another brand name. To be licensed, the product must have a license number that begins with the letters B through J and include a "DEXRON Approved" sticker on its container. Like many automobile manu