Not so long ago, it was common for automatic transmissions to be referred to as slushboxes, since that's how they often behaved. Rather than use a mechanical clutch, traditional automatic transmissions use a fluid coupling between the engine and the gear-sets to transmit drive torque. This provides some benefits, but isn't a perfect system.
Affordability as the watchword Tuesday as automotive engineers at the SAE World Congress discussed how to meet the new 2016 corporate average fuel economy standards. Automakers will have to get their fleets to an average of 34.1 miles per gallon (35.5 equivalent with other factors for the EPA CO2 limits). Most automakers are already well on their way to this level with their next-generation designs. However, to do it they will have to make improvements to virtually every model in the entire flee
Try explaining turbocharging to someone who doesn't know cars, and if you do a good job, you're likely to get a reaction something along the lines of, "then why don't they put turbochargers on all cars"? Well, that's a perfectly fair question, and the answer of course is turbo lag. It's one major downside to using spools, and it's what's keeping Ferrari, for one, from implementing them immediately.
One of the first consequences of the Chrysler-Fiat alliance could be the arrival of Fiat's new six-speed transmission in Chrysler models. Chrysler lost its dual-clutch partner Getrag, which was developing a next-gen dual clutch transmission, so Fiat's unit, still under development, is likely to arrive statewide. At least this is what Frank Klegon, Chrysler LLC's executive vice president of product development, speculated about during the recent Chicago Auto Show. Called G365, Fiat's new transmis
Audi has just added a new transmission option to European-market versions of the A4 and A5. The company's 7-speed S-Tronic dual clutch gearbox is now available with the 2.0L TFSI four cylinder. The A5 picks up 0.3 seconds in the 0-60 run and cuts 1g/km of CO2 emissions with the new gearbox. In the sedan, the mileage is unchanged at 31.8 mpg compared to the 6-speed manual. Here in the U.S., the A4 2.0L currently comes standard with a CVT while manual and conventional automatics are optional.
Over in the UK, drivers buying a new Passat CC now have a new transmission option that gives them an extra 1.2 mpg. The 160 hp 1.8L TSI four cylinder can now be paired with VW's 7-speed DSG dual clutch gearbox in place of the 6-speed manual. The DSG yields a combined 32.2 mpg (U.S.) compared to the 31.0 mpg (U.S.) with the manual. Similarly, the CO2 emissions have dropped from 178 g/km to 172 g/km. The 2.0L TDI diesel and gasoline 3.6L V6 are available with the 6-speed DSG, in addition to the ma
The dual clutch gearbox installed in the Lincoln Concept C and Volvo S60 Concept that debuted at the Detroit Auto Show is now officially coming to Ford's lineup. The Getrag-supplied PowerShift gearbox was hinted at on the Fiesta micro-site that Ford recently launched and will be available in the new sub-compact when it launches at the end of the year. Like the DSG units used in a number of Volkswagens, the PowerShift allows full automatic control or clutchless manual shifting. Ford's first Power
Now that Chrysler's deal to build dual clutch transmissions in a joint venture with Getrag is officially kaput, the company will stick with its existing 6-speed automatic for now. In early 2007, Chrysler announced the deal with Getrag to supply up to 700,000 transmissions a year that could cut fuel consumption by six percent. It was part of a series of powertrain announcements that included the new Phoenix V6 engine family. Getrag was unable to raise the $300 million needed to pay for its toolin
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