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Outline
The transmission is one of the core components of the automotive powertrain system, and the housing serves as a critical structural element. Its performance directly impacts power transmission efficiency, reliability, and driving comfort. This paper reviews research advancements in lightweight design, reliability analysis, casting processes, and vibration-noise control of transmission housings. The optimization of transmission housing structure can reduce weight and enhance durability, while increasing stiffness effectively suppresses radiation noise. Optimizing the stiffener, changing the cross-section design and changing the shell thickness with the help of simulation technology can greatly reduce the design difficulty, and the exploration of new materials will also become a research hotspot. Additionally, optimizing casting process parameters can shorten production cycle and improve casting quality. However, the best process parameters need to be further explored, and the combination of casting process and intelligent manufacturing technology in the future is worthy of in-depth study, which provides reference for improving the comprehensive performance of transmission housing.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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