Transmission types
Manual
Automatic / Semi-automatic
Bicycle gearing

Jan 24, 2015 Between dual clutch transmissions (DCT), continuously variable transmissions (CVT), and nine-speed automatics, the world of transmissions is confusing. So we broke down each technology, how it. Jan 04, 2016 Buy OEM VW AUDI VAG DSG FLUID CHANGE SERVICE KIT: Transmission Fluids - Amazon.com FREE DELIVERY possible on eligible purchases. A direct-shift gearbox (German: Direkt), commonly abbreviated to DSG, is an electronically controlled dual-clutch multiple-shaft gearbox in a transaxle design, with automatic clutch operation and with fully automatic or semi-manual gear selection. The first actual dual-clutch transmissions were derived from Porsche in-house development for their Model 962 racing cars in the 1980s.

Electrohydraulic manual transmission^[1], also known as Clutchless manual, or Automated manual^[2]^[3], is a type of semi-automatictransmission system, closely related to a manual transmission, which uses an automated single-clutch unlike conventional manual transmissions where the driver operates the clutch. Gear shifting, clutch engagement and clutch depression are controlled by electronic computers and hydraulic actuators^[4]. To change gears, the driver selects the desired gear with the transmission shift lever, and the ECU automatically actuates the clutch and the TCU the throttle to match revs and engage the clutch again. Also, many such transmissions operate in sequential mode where the driver can only upshift or downshift by one gear at a time.

Depending on the implementation, some computer-controlled electrohydraulic manual transmissions will automatically shift gears at the right points (like an automatic transmission), while others require the driver to manually select the gear even when the engine is at the redline. Despite superficial similarity, automated manual transmission differ significantly in internal operation and driver's 'feel' from manumatics, the latter of which is an automatic transmission (automatics use a torque converter instead of a hydraulic or electronic clutch in an auto-manual to manage the link between the engine and the transmission) with ability to override the automatic transmission's computer, and actuate shifts manually.

Use in road cars[edit]

In 1984, Isuzu introduced the 'NAVi5', a semi-automatic gearbox with electronically controlled hydraulics, for their domestic-market Aska. Initially available with an automatic mode only, the later incarnations added a manual mode. It was operated with an H-pattern shift lever, not a sequential lever or paddles popular in today’s cars.

Ferrari offered the Mondial T model with a clutchless manual, called Valeo transmission. In this system the gear stick of a traditional manual transmission is retained. Moving the shifter automatically engages the electrohydraulic clutch. This transmission was featured in an episode of Top Gear. In 2017 Toyota unveiled the GR HV SPORTS^[5] concept with what looks like a similar transmission.

The most famous application of a sequential transmission on road-cars would be their use in some Ferraris since the late-nineties, beginning with the 355 F1. Their system, the most current version of which is called 'F1-Superfast,' with shift times of 60 ms^[6] is designed to serve as a link to their Formula One efforts. This technology has also trickled down to the cars of their sister company, Maserati, where it is known as 'Cambiocorsa'. In 1999 Alfa Romeo 156 was the first mainstream car with a sequential transmission derived from the Ferrari system (Selespeed).^[7]

BMW offered an H-pattern manual with an automated clutch in approximately half of their early-mid 90s Alpina E31 models (referred to as 'Shiftronic'). This was in some a ways a predecessor to their later sequential gearbox offering, a system simply called 'sequential manual gearbox' (SMG) on the E36 M3(Starting in 1997) and later 'SMG-II' on the E46 M3. BMW's first generation SMG was also partly a Magneti Marelli system similar to the one used by Ferrari and Alfa.^[8] The BMW SMG transmission has both automatic and manual shift modes. Inside the different modes there are different programmes, with six settings to control the upshift/downshift speed for manual operation, and five settings for automatic mode. BMW's final SMG gearbox, known as SMG III, was the fastest shifting gearbox at the time (2006), recording a 65 millisecond shift time in its most aggressive mode^[9] - a time only surpassed by Ferrari with the 599 GTO (60 milliseconds) and later the Lamborghini Aventador (55 milliseconds).

BMW has since switched over to a Getragdual-clutch transmission in the latest M3, and Ferrari as well in 2009 with the California and 458 Italia.

The 3rd generation Toyota MR2 used Toyota's version, known as the 'Sequential Manual Transmission' (SMT).

What Is A Dual Clutch Dmg For Mac

Volkswagen Group (parent owner of Lamborghini) introduced an automated manual transmission to the Lamborghini Gallardo^[10]^[11] (E-gear) and then added it to the Audi R8^[12]^[13]^[14] (R-tronic).

Applications[edit]

Production Year (*)	Manufacturer	Model	Version	Transmission Name
1996	Alfa Romeo	156	2.0 TS/JTS/GTA	Selespeed
2000		147	2.0 TS/GTA
2003		GT	JTS
2004		159	2.2 JTS
2005		Brera	2.2 JTS
2006		Spider	2.2 JTS
2007		8C Competizione & 8C Spider	-	Q-Select
2001-2007	Aston Martin	Vanquish / Vanquish S	All	Sequential Shift Manual (SSM)
2006	Audi Sport GmbH	type 42 R8^[15]	-	R-Tronic^[16]
1992	BMW^[17]	E36 M3^[18]	-	SMG (Sequential ///M Gearbox)
2003		E46 325Ci, 330Ci	SMG (Sequential Manual Gearbox)
2000		E46 M3	-	SMG II (Sequential ///M Gearbox)
2002		E85 Z4	-	SMG (Sequential Manual Gearbox)
2003		E60/61 525i, 530i, 545i, 550i	-	SMG (Sequential Manual Gearbox)
2005		E60/61 M5	-	SMG III (Sequential ///M Gearbox)
2003		E63/64 645Ci, 650i	-	SMG (Sequential Manual Gearbox)
2005		E63/64 M6	-	SMG III (Sequential ///M Gearbox)
2004	Citroën	C4	equipped with a HDI engine	EGS
2017	Dallara	Stradale	-	-
1993	Fiat	Punto	-	Selespeed
2001		Stilo	Abarth	Selespeed
1995		Bravo	in Brazil	Dualogic
2003		Idea		Dualogic
1988	Ferrari	Mondial T	-	Valeo
1994		355 F1	-	F1
1999		360	-
2002		575M Maranello	-
2002		Enzo	-
2004		612 Scaglietti	-
2004		F430	-
2005		FXX	-
2006		599	-
1983	Isuzu	Aska	2.0 (option available from 1984)	NAVi5
1985	Isuzu	Gemini	FF (option available from 1986)	NAVi5
2001	Lamborghini	Murciélago	-	e-gear
2003		Gallardo	-
2007		Reven