BETTER PARTSAttack on the double clutch
Detroit, August 21, 2014
Almost effusively praises the official Chevrolet press release, the new and developed by GM Hydra-Matic 8L90 eight-speed automatic transmission. The new wonder - box will come in the 2015er - year courses of the Corvette Stingray and Z06 to use and to make the iconic sports car easier, faster and more economical. " A win-win-win situation for customers," says Kaveh Kavoos, GM chief engineer for eight-speed automatics.
Faster than Porsche's PDK
The new transmission is to combine the speed of a dual clutch transmission with the comfort of a converter automatic transmission. "Creative Package " as GM calls it, makes the eight-speed box no bigger than the old six-speed automatic. And thanks to extensive use of aluminum and magnesium it is also four pounds lighter. A new control system analyzes and processes 160 commands per second and is to significantly improve response times and switching speed. According to GM, the automatic gears under full load 80 milliseconds changes faster than the Porsche PDK transmission in the 911th
More train, less fuel
Of course, also improve the acceleration values and the consumption of the Corvette. Now opposite the variant with seven-speed manual transmission is about 0.1 seconds quicker from zero to 60 miles per hour (about 97 km / h ). 3.7 seconds takes the sprint. Due to the lower gear, the consumption also decreased by 3.5 percent. Extra-urban to the GM Corvette Stingray loud now at 8.0 liters per 100 kilometers auskommen.In Germany, the eight-speed transmission is set up along with the Z06 in the spring of 2015. The Corvette Stingray will come as a 2016er model to benefit from the new automatic only in autumn 2015 . ( sw )