Recently, Shengrui Transmission Co., Ltd. from Shandong, China, launched the new SR8AT-300 automatic transmission, which is the first domestic 8-speed automatic transmission with independent intellectual property rights. It is reported that Shengrui has reached an agreement with Jiangling Lufeng Automobile Group Co., Ltd., and Lufeng X5 is expected to be launched together with Shengrui 8AT automatic transmission in 2021.

●The model matched with Shengrui’s 8AT gearbox - Landwind X5

Around 2010, there was news that Shengrui and FAW Haima had reached a cooperation intention of 60,000 units. The two Haima models began to be supplied in batches in October 2021, but then disappeared.

Interested in Landwind X5? Please click on the following link:

●Introduction to Shengrui Transmission Co., Ltd.

The name Shengrui sounds a bit strange. It is not as familiar as Tangshan Aisin, Nanjing Punch, Jiangxi Getrag and other manufacturers, but it is such a company that is not usually discussed after dinner that it has developed an 8AT automatic transmission. Now, let’s take a look at it in general.

Shengrui Transmission Co., Ltd.

Shengrui Transmission Co., Ltd. was established in 2021 and was recognized as a high-tech enterprise in 2021. The registered trademark "Shengrui" has been recognized as "China's Well-known Trademark". Three wholly-owned subsidiaries were established: Weifang Shengrui Power Machinery Technology Co., Ltd., Weifang Shengrui Parts Co., Ltd., and Weifang Shengrui Casting Co., Ltd. The Shandong Enterprise Technology Center, Shandong Power Transmission Engineering Technology Research Center, and Shandong Industrial Design Center were established to mainly engage in the R&D and production of various series of heavy-duty diesel engine parts and key automotive parts.

Our products are mainly targeted at domestic and foreign manufacturers such as Weichai Power, China Yituo, Zhengzhou Yutong, Italian Fiat Group, British SAS, and Australian Jebert.

●China's first 8AT automatic transmission with independent intellectual property rights

There are three main manufacturers of 8AT transmissions in the world: Germany's ZF, Japan's Aisin and South Korea's Hyundai Motor Company. Among them, the vertical 8AT was first launched by Aisin and will be installed on the Lexus LS 460 for the first time in 2021. Later, Aisin exhibited a transverse 8AT gearbox at the 2021 Paris Auto Show, but there was no matching information for related models.

Looking back at the domestic market, Shengrui and the Chemnitz University of Technology in Germany developed an 8AT automatic transmission. Starting from the initial conceptual innovation, this gearbox adopts a forward design route, filling the domestic R&D gap and the gap in the production field of automatic transmissions with 6 or more speeds. It can be said to be a milestone in the domestic gearbox industry.

For transverse gearboxes, the limited width of the engine compartment is a thorny problem, which requires the size of the gearbox to be designed as small as possible. Four gears have been added from 4AT to 8AT, and the size is still the same as the 4AT gearbox. The total weight of 87.5kg will not overload the front of the car.

The transmission ratio range of Shengrui 8AT ranges from 4.17:1 in the first gear to 0.64:1 in the eighth gear, and the speed ratio range reaches 6.5. The 7th and 8th gears are overdrive gears designed to save fuel. The maximum torque it can withstand is 300N·m. Although this value is not high, front-wheel drive models generally do not have strong power.

Shengrui 8AT uses three pairs of constant mesh gears, three planetary gears and five shifting elements to achieve more gears, higher shifting comfort and smoothness, and is faster than the 4AT transmission Tank fuel saving is nearly 16%.

Shengrui 8AT can match from 1.6L turbocharged engine to 3.0L naturally aspirated engine, suitable for mid-to-high-end cars. Due to the innovation of the layout scheme, the automatic transmission can realize an engine-level four-wheel drive structure, and can be easily changed to 5AT, 6AT, etc. , and a hybrid automatic transmission.

Summary:

The SR8AT-300 transverse 8AT automatic transmission fills the gap in domestic transmissions and realizes 8 forward gears, which is very helpful in saving costs and reducing prices. Two of the overdrive gears also improve fuel economy. This gearbox will play a great role in improving the competitiveness of self-owned brand cars.

@2019