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The fifth generation of the BMW 3 Series range of compact executive cars is designated under the model codes E90 (saloon), E91 (estate, marketed as 'Touring'), E92 (coupé) and E93 (convertible). The model was introduced in December 2004, [ 8 ] and produced by BMW until October 2013 and is often collectively referred to as the E90, E9x, or ...
In April 2008, the E90/E92/E93 M3 became the first BMW to be available with a dual-clutch transmission when the 7-speed Getrag "M-DCT" transmission was introduced as an option. [ 103 ] The official 0–100 km/h (62 mph) acceleration times for the coupé and saloon are 4.6 seconds with the DCT transmission (4.8 seconds with the manual ...
The 420G is a 6-speed manual transmission manufactured by Getrag. It is designed for longitudinal engine applications and for use on engines producing up to 499 N⋅m (368 lb⋅ft) of torque. BMW used this transmission with M60 V8 models such as the European manual 840i, European manual 740i, 540i; [ 1 ] as well as the M62 powered 5 series ...
[3] [7] By timing the operation of one clutch to engage at the precise moment that the other is disengaging, a DCT can shift gears without interrupting the torque supply to the wheels. [6] [7] A DCT uses clutch packs (as per a manual transmission), rather than the torque converter used by traditional (hydraulic) automatic transmissions. [1]
Automated manual transmissions can be semi-automatic or fully-automatic in operation. Several different systems to automate the clutch and/or shifting have been used over the years, but they will generally use one of the following methods of actuation for the clutch and/or shifting: hydraulic or electro-hydraulic actuation, [12] electro-mechanical, [13] pneumatic, [6] [14] [15] electromagnetic ...
A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. As temperatures increase, the clutch engages so that the fan is driven by engine power and moves air to cool the engine.
The weight of the European specification M4 equipped with a manual transmission is 1,572 kg (3,466 lb) and with the M-DCT dual-clutch transmission, the car is some 40 kg (88 lb) heavier, losing some 80 kg (176 lb) as compared to the E92 M3. [4] As per its E92 predecessor, the roof of the coupe model is constructed from carbon fiber (except if ...
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