Today we share the principles of the at gearbox -- driving the visual world
Total report: 24 pages
Summary of the principles and development applications of the at gearbox
The core structure of the at gearbox (automated gearbox) is a combination of liquid rectangulars and planetary platoons, which, after years of technological evolution, has developed mature motion solutions and extended to the mixing field。
Liquid rectifiers, as key components of power transfer, have both "sweet" and "fresh" characteristics. "soft" is reflected in its non-coercive connection through pump wheels, turbines, and steering vessels, where the conversion of mechanical and liquid energy using atf oil as the medium can automatically amplify the twister, with protection against oscillation and overload protection; and "soft" relies on lock-detonating clutches to achieve rigid motion under stable conditions, which compensates for insufficient hydraulic transmission efficiency. The rationale for its work is based on the synthetic movement of vortex and circulation, and the smooth transmission of engine twists to gearboxes through liquid flow。
The planetary platoon is the core structure for achieving speed change, consisting of solar wheels, planetary shelves and cortex, which, through a combination of fixed, power-injective output from different components, can perform the functions of reverse, growth, deceleration and vacuum. On that basis, several classical structures have been developed: the simpson planetary solar wheel, which reduces the number of parts; the lavina planetary confluence and cortex, which is more compact; and the lavina and single-planet platoon, which achieves multiple blocks and simplifys the structure, which contributes to the multi-speed and miniaturization of the at gearbox。
Among the typical traditional at products, evine transversal 4at uses the lavina planetary platoon, transversal 6at uses the ly type of planetary platoon, and vertical 8at is based on the improvement of the ly type line design, and vertical 6at uses a three-planet line structure to meet the power needs of different models. With the development of mixing technologies, the at transformer box is expanded through the p2 architecture, such as the zf 8at+p2 and punch 6at+p2 programmes. At the same time, power diversion techniques based on planetary platoons are widely applied in hybrid vehicles, the toyota prius series achieves power distribution between engines and engines through planetary platoons, and the avl 7 mode mixing system provides a rich driver model choice, balancing power with efficiency。
In terms of technological development, the at gearbox has been advancing around structural optimization, efficiency improvement and multi-block expansion, with the innovative combination of planetary platoons and technological refinement of liquid rectangulars as core drivers, while mixing has become an important orientation in adapting to new energy trends, providing continuous smooth and reliable transmission experience for vehicles。
Would you like me to prepare a comparison of the core technical parameters of the at gearbox, covering different planetary platoon structures, representative products and key performance indicators
Below is an excerpt from the report
