Hybrid power system, according to the position of the drive motor (Position), is divided into five types of P0, P1, P2, P3 and P4, of which P2 is the most adopted mode of all hybrid vehicles currently on the market. The position of the motor is after the internal combustion engine and before the transmission.
For vehicle system integration engineers, sometimes the biggest trouble is the layout problem. For this, Schaeffler engineers have made a very good design in this P2 hybrid module - integrating the clutch into the motor, making the overall structure of the system Extremely compact, with an axial dimension of up to 115mm, which brings great convenience to the entire vehicle configuration!
The Schaeffler P2 hybrid module includes a high power density permanent magnet synchronous motor, a dry K0 clutch, a damper, an electric center actuator and a control system. Unlike the Toyota THS and the Universal PS, the P2 is relatively simple in configuration and low in cost.
Modification of modularity and axial dimensions offers the great advantage of being easily integrated into existing powertrain systems, allowing for quick and easy mixing with minimal changes and engineering application development. Mobilization helps OEMs to significantly reduce R&D investment and reduce development risks. It is also an effective technical means to quickly meet the "double points" policy. The transmission in the powertrain may be a manual transmission, or may be an automatic transmission of various forms such as AT, DCT, CVT.
Although the overall volume is very compact, it still provides very high torque. Therefore, the Schaeffler P2 Hybrid Module is suitable for mixing from various types of plug-in hybrids, which can help the OEM to cope with increasingly strict and cost-effective. Automotive emissions regulations and fuel consumption regulations.
The entire system can integrate 25kW to 80kW motors, deliver up to 250Nm of torque through the P2 clutch, increase the torque to 800Nm when combined with the one-way clutch, and K0 clutch dynamic response time is less than 100ms, which can control the engine very accurately when starting the engine. Torque transfer between the motors. The module can be used in a variety of drive modes, including purely electric drive vehicle start and run, pure engine drive travel, motor boost, pure electric drive running through the motor to start the engine, and brake energy recovery. Different OEMs can be flexibly configured for different vehicle models.
The vehicle equipped with the P2 hybrid module has excellent vehicle dynamic performance in a mode in which the motor and the engine are driven together, and can achieve a maximum speed of 120 km/h or more in the pure electric mode, and an acceleration time of 0 to 100 km/h is less than 8 s, and Increase fuel economy by at least 70% when applied to plug-in hybrid vehicles (50km pure electric driving range). At the same time, P2 hybrid modules can help vehicles reduce carbon dioxide emissions by 15% to 60% for different operating conditions.
Based on this, P2 technology has been widely adopted in Europe. Some models of Porsche, Volkswagen and Audi have been maturely applied. Changan Yifei PHEV is the first mass-produced model equipped with P2 hybrid system in China's auto market. It has undergone very strict The test, in October 2017, Changan Automobile announced that the "Shangri-La Project" was listed at the same time.
Schaeffler also held its world's first P2 hybrid module production ceremony at the Taicang Plant in Jiangsu on March 16, 2018. Ms. Ye Hongqi, Director of New Energy Product Development Department of Changan Automobile New Energy Automotive Division, said in her speech: “Changan Automobile and Schaeffler have cooperated to solve numerous technical challenges such as sealing, NVH, thermal management, software control, etc. After 5 years of positive development and rigorous testing, finally, P2 hybrid system and 2.0T engine and double The clutch transmission perfectly cooperates, which makes the escape PHEV show excellent smoothness during the oil-electric switching, providing consumers with very comfortable driving performance. Together with the high-energy, high-power lithium battery, the escape PHEV can reach More than 60km of pure electric driving range, when the full power is full, the maximum driving range is more than 1000km." In addition, representatives from FAW, SAIC, GAC, Geely, Jianghuai, SAIC-GM-Wuling and other OEMs attended the production. The celebration has great interest or cooperation intention for the P2 hybrid module.
The successful commissioning of the P2 Hybrid Module not only reflects Schaeffler's leading innovation capabilities and technical expertise, but is also the best proof of Schaeffler's strong manufacturing capabilities and high quality standards. The P2 hybrid module production line is a production line tailored by Schaeffler for this module. The entire production line is about 40 meters long and is arranged in a U-shaped line, covering an area of ​​about 400 square meters. Designed and built at the German headquarters, the line was created by the Special Equipment Division in Herrachgen and Boer, Germany, the Industrial Engineering Department at the Boer and Taicang Plants, and the Boer Product Line team.
As a complex system, P2 Hybrid Module adopts many innovative designs and technologies. It requires a large number of advanced technologies in production, such as double-sided dynamic balance test and compensation, high voltage test, motor rotor magnetization, etc. Automated, highly integrated and technologically advanced. In addition, consistent with Schaeffler's consistent quality policy, the line meets very high quality standards, not only equipped with production line terminal test benches, but also extensive use of error proof processes and process tests during production. The digital concept-based system traces parts and finished products, with key components (such as motors) taking a one-to-one precise trace. The line also meets high standards in terms of safety and ergonomics.
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