超级军网弱弱的问个问题，关于汽车档位的
来源：百度文库 编辑：超级军网 时间：2024/04/28 16:15:58
为什么AT变数箱的档位数多为偶数呢，4AT 6AT 8AT 而很少有5AT 7AT 9AT 而双离合7个档的却不少为什么AT变数箱的档位数多为偶数呢，4AT 6AT 8AT 而很少有5AT 7AT 9AT 而双离合7个档的却不少
君不见90年代末期新世纪初期一大票5AT车末？比如奥迪A4、A6、帕萨特等等，现在也有某豪华高端品牌使用7AT啊，况且有某豪华品牌声称要研发9AT的。
双离合大规模投产的现阶段只有两个档位的，一个6速一个7速，各占一半比例，这个让我怎么说呢？
双离合大规模投产的现阶段只有两个档位的，一个6速一个7速，各占一半比例，这个让我怎么说呢？
3AT的也大票大票的
位什么现在6AT的貌似不5AT的还普遍，AT里面奇数档位的是不是难度更大啊？
第一台在美国波士顿诞生的自动挡就是2进1退
The first automatic was invented in 1904 by the Sturtevant brothers of Boston. It provided two forward speeds that were engaged and disengaged by the action of centrifugal weights without need for a foot-operated clutch. As engine speed increased, the weights swung out to engage bands -- first the low-gear band and then the high-gear band. The unit failed because the weights often flew apart.
然后真正投入使用的就是美国通用Oldsmobile下的四速，这个广泛应用到通用的各个车系。
In 1937, Oldsmobile came out with a four-speed semi-automatic transmission called the "Automatic Safety Transmission" (AST). The driver depressed the clutch pedal and shifted into reverse or into one of two forward ranges: Low or High. Once in Low, the transmission shifted automatically from first to second; when in High, it shifted from third to fourth. Changes within each range were automatic by way of oil pressure and two hydraulically operated planetary gearsets. The shift points were preset according to the vehicle's speed. This AST transmission, an $80 option, was installed on about 28,000 1938 Oldsmobiles. The "safety" aspect referred to the claim that the driver could keep focused on the road rather than be occupied shifting. The significance of the AST is that it was the forerunner of the GM Hydra-Matic transmission which Oldsmobile introduced in 1939 and made available on the 1940 models. In 1938 Buick introduced a five-speed semi-automatic transmission in the Special, but it was so prone to trouble that it was dropped the following year.
同期欧洲发明的半自动挡，双离合的前身，很古怪的是，这是两个变速箱的合体，其中负责高档位的变速箱需要驾驶员手动换挡。
楼主说的其实有道理，有自动变速箱的时候，绝大部分是偶数挡主流。5at普遍不是主流，而且不如4at和6at可靠。
The first automatic was invented in 1904 by the Sturtevant brothers of Boston. It provided two forward speeds that were engaged and disengaged by the action of centrifugal weights without need for a foot-operated clutch. As engine speed increased, the weights swung out to engage bands -- first the low-gear band and then the high-gear band. The unit failed because the weights often flew apart.
然后真正投入使用的就是美国通用Oldsmobile下的四速，这个广泛应用到通用的各个车系。
In 1937, Oldsmobile came out with a four-speed semi-automatic transmission called the "Automatic Safety Transmission" (AST). The driver depressed the clutch pedal and shifted into reverse or into one of two forward ranges: Low or High. Once in Low, the transmission shifted automatically from first to second; when in High, it shifted from third to fourth. Changes within each range were automatic by way of oil pressure and two hydraulically operated planetary gearsets. The shift points were preset according to the vehicle's speed. This AST transmission, an $80 option, was installed on about 28,000 1938 Oldsmobiles. The "safety" aspect referred to the claim that the driver could keep focused on the road rather than be occupied shifting. The significance of the AST is that it was the forerunner of the GM Hydra-Matic transmission which Oldsmobile introduced in 1939 and made available on the 1940 models. In 1938 Buick introduced a five-speed semi-automatic transmission in the Special, but it was so prone to trouble that it was dropped the following year.
同期欧洲发明的半自动挡，双离合的前身，很古怪的是，这是两个变速箱的合体，其中负责高档位的变速箱需要驾驶员手动换挡。
楼主说的其实有道理，有自动变速箱的时候，绝大部分是偶数挡主流。5at普遍不是主流，而且不如4at和6at可靠。
4At的很多吧，貌似3TA的没见过
现在一般都是5-6级变速吧
光明道具 发表于 2012-5-22 17:11 ![]()
4At的很多吧，貌似3TA的没见过
我以前那辆车就是3AT的
4At的很多吧，貌似3TA的没见过
我以前那辆车就是3AT的
gogogo. 发表于 2012-5-22 17:53 ![]()
我以前那辆车就是3AT的
现在没3AT的了吧， 偶家的RAV4 4AT都说很落后的
我以前那辆车就是3AT的
现在没3AT的了吧， 偶家的RAV4 4AT都说很落后的
奇数偶数的都多啊。