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Filed under: Technology, BMW

BMW Eight-Speed Adaptive Transmission

BMW Eight-Speed Adaptive Transmission – Click above for high-res image gallery

BMW just wrapped up its annual Innovation Days here in Munich, and in addition to detailing its new modular engines (turbocharged three-, four- and six-cylinder powerplants), showing off a range of lightweight components and discussing the possibility of equipping a future EV with a range-extending engine, BMW revealed plans for a new adaptive transmission based on its current eight-speed gearbox.

Utilizing GPS mapping, a wireless data connection, Dynamic Stability Control (DSC), front and rear-mounted cameras and radar sensors, the transmission can adapt its shifting pattern and power delivery to suit road conditions.

So, let’s say you’re heading out on the road and it’s raining. The data connection pulls in the most recent weather information, the DSC takes in the coefficient of friction of the road and then restricts power to avoid wheel spin. With the integrated GPS, the system can detect the next curve, recognize you’re in Sport mode and downshift into a lower gear to perfectly suit the bend you’re about to bomb.

The range of applications is only limited by the amount of data the system can pull in and process, and while BMW wouldn’t divulge when this technology would hit production, there’s a good chance that the next iteration of the 7 Series could benefit from the system and then filter down throughout BMW’s range. Check out the gallery below for a series of illustrations showing the system in action and get more details in the press blast after the break.

Gallery: BMW Adaptive 8-Speed Transmission

[Source: BMW]

Continue reading BMW developing adaptive 8-speed transmission that predicts curves, road conditions

BMW developing adaptive 8-speed transmission that predicts curves, road conditions originally appeared on Autoblog on Wed, 06 Apr 2011 13:30:00 EST. Please see our terms for use of feeds.

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Filed under: Recalls, Electric

Even though U.S. production of the Think City started off well the other day, all is not fine in Think land. The company is recalling 850 City cars throughout Europe because the brakes on the electric car can weaken under “extremely humid conditions.”

A Think representative told AutoblogGreen, “Major, prolonged exposure to water could cause a small malfunction in the electronics. The brakes would still work, but required increased pressure to use.” This problem could appear in instances of severe rain or after intense car washes. James Andrew of Think Europe tells NRK (Google Translated) that the repair includes wrapping the pump circuit in an epoxy, which “solves the problem fully.” Importantly, new models are not affected. We’ve driven the City in wet conditions and have never experienced this problem.

There are also stories floating around that say that Think has not provided City vehicles to the European crash testing organization EuroNCAP, like this one on VG Net (Google Translated). EuroNCAP needs three vehicles to crash, but VG Net reports that Think reportedly said it could not spare the vehicles. In fact, Think told AutoblogGreen, it will send vehicles to EuroNCAP in early 2011, adding, “We are of course supplying the vehicles. There is no story there.”

[Source: NRK, VG Net (both Google Translated), Think]

Think recalling 850 City EVs over braking issue in “extremely” wet conditions originally appeared on Autoblog on Fri, 03 Dec 2010 14:01:00 EST. Please see our terms for use of feeds.

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