Search results
Results from the WOW.Com Content Network
Schematic of a DCT (using two identical clutches located on the axis of the flywheel) A dual-clutch transmission (DCT) (sometimes referred to as a twin-clutch transmission) is a type of multi-speed vehicle transmission system, that uses two separate clutches for odd and even gear sets. [1]
A direct-shift gearbox (DSG, German: Direktschaltgetriebe [1]) [2] [3] is an electronically controlled, dual-clutch, [2] multiple-shaft, automatic gearbox, in either a transaxle or traditional transmission layout (depending on engine/drive configuration), with automated clutch operation, and with fully-automatic [2] or semi-manual gear selection.
Advantages of a truck conversion over a standard Class A are safety, ease of service/maintenance, and usually a much higher power-to-weight ratio, since most semi-tractors are built to move an 80,000-pound (36,000 kg) combined weight. A disadvantage is that with the engine up front, they are louder than when the engine is in the back.
The operation of a dual-clutch transmission is analogous to two traditional manual transmissions, each with its own clutch, operating in parallel and alternating shifts. The Ford unit is a six-speed with one clutch acting on reverse, first, third, and fifth gears, and the other used for second, fourth, sixth gears.
ZF Friedrichshafen AG is a German technology manufacturing company that supplies systems, in particular transmissions for buses, passenger cars and SUVs, light commercial vehicles such as vans and light trucks, as well as all types of heavy and special vehicles. Basically there are two types of motor vehicle transmissions:
A hydrostatic CVT uses an engine-driven, positive-displacement pump to deliver oil under pressure to one or more hydraulic motors, the latter creating the torque that is applied to the vehicle's driving wheel(s). The name "hydrostatic CVT," which misuses the term "hydrostatic," differentiates this type of transmission from one that incorporates ...
A manual transmission (MT), also known as manual gearbox, standard transmission (in Canada, the United Kingdom and the United States), or stick shift (in the United States), is a multi-speed motor vehicle transmission system where gear changes require the driver to manually select the gears by operating a gear stick and clutch (which is usually ...
Historically, a dual-clutch transmission shifts faster than a standard hydraulic automatic transmission with a torque converter or a single-clutch automated manual transmission. This is possible because the DCT can pre-select the next gear and transfer torque from one clutch to the next clutch with the pre-selected next gear, thus reducing ...