An eight-speed paddle-shift automatic transmission will be offered in the Chevrolet Corvette Stingray for 2015, enhancing the performance and efficiency of the 2014 North American Car of the Year. Designed and built by GM, the new transmission delivers world-class shift times that rival the best dual-clutch designs.

The transmission controller analyzes and executes commands 160 times per second. Wide-open throttle upshifts are executed up to eight-hundredths of a second quicker than those of the dual-clutch transmission offered in the Porsche 911.

With four gearsets and five clutches, creative packaging enables the new eight-speed automatic to fit the same space as the previous six-speed automatic. Extensive use of aluminum and magnesium make it more than eight pounds, or 4 kg, lighter than the six-speed. Design features that reduce friction contribute to the expected 5-percent greater efficiency.

The 8L90 is built at GM’s Toledo, Ohio, transmission facility.

宣称升档速度比911的PDK快

引用:

原帖由 hmds 于 2014-4-8 12:47 发表
6AT做好了也没啥丢人的好吧，关键他这个6AT又蠢又慢，确实该换

慢慢开还好，想超个车啥的，心中一万头草泥马奔腾而过

引用:

原帖由 已婚群众 于 2014-4-8 12:53 发表

请T大详细讲讲。是不是超车的时候深踩油门不降挡？

降档会降的，但是速度很慢，每次升档的动力断档也非常明显感觉像按了暂停键，最后换挡逻辑有非常大的问题。
比如你正在超车，档位从刚才的5档降到了3档但是你稍稍松了下油门，它会马上升到4档然后你不得不再踩深点让它降档...此时可能变成4-3-2-3...

[ 本帖最后由 toshiya115 于 2014-4-8 13:32 编辑 ]

引用:

原帖由 viperbite 于 2014-4-8 16:23 发表


的确是，但又不是100%必现，6T70貌似没有这样的问题。所以应该是东岳那套6T50/45/40/30的毛病。
不过6T70和6T其他的机械结构本来就有不同。

6T70是XTS用的吧，那个要好一点
话说马上就要出三代了，就现在二代这操性，我看到十三代也没用