The Roewe D7 DMH super hybrid system adopts a series of advanced plug-in hybrid technologies, which are similar to BYD's DM-i, Changan Qiyuan and other systems, but show its own characteristics in key designs. The following is a detailed analysis of the key features of the system:
Tools Raw materials.
Roewe D7 DMH
Method steps.
P1 and P3 motor coaxial design:
The P1 motor is coaxial with the engine, and by integrating the clutch into the P1 motor, the compact structure is realized, which reduces the height and weight of the entire system, and improves the transmission efficiency and smooth operation.
Compared with the parallel shaft arrangement, the coaxial design has one less set of gears, which further improves the transmission efficiency and lays the foundation for the improvement of overall performance.
Ultra-lightweight design.
The P1 motor adopts an extremely lightweight design, and the cooling efficiency is increased by 30% through the immersive oil cooling technology of the winding, so that the continuous power reaches more than 80% of the peak power.
The overall system is more than 10% lighter than the parallel shaft product, which effectively reduces the height and weight of the system, and is suitable for cars with a lower front end.
High Power P3 Motor Design:
The maximum power of the P3 motor is 150kW, the peak torque is 330N·m, and the mass power density is as high as 61KW kg, using hair-pin flat wire design, high power density, better heat dissipation performance, maximum efficiency up to 975%。
Direct injection oil cooling technology is applied to P3 motors, shortening the transmission path, dissipating heat more directly, and improving continuous performance by more than 20%. The rotor design adopts the classic double-V and six-segment inclined pole design, which reduces the torque ripple and vibration of the motor, and combines the active harmonic injection technology to improve the NVH performance of the motor.
Five drive modes:
The system supports five driving modes: pure electric, series, full load, direct drive, and energy** to meet the needs of different daily vehicle conditions.
The flexible switching of pure electric mode, series mode, full load mode, direct drive mode and energy** mode enables the system to achieve optimal performance in various driving situations.
5-in-1 PICU Controller:
The 5-in-1 PICU controller integrates five functions, including motor control, engine control, hybrid transmission control, air conditioning thermal management, and battery thermal management, and reduces redundant components through a highly integrated design, making the structure more compact.
The network load and data latency in the car are reduced, the computing speed is improved, and the power response speed is increased by 50% compared with the previous one.
Continuous Optimization and Late-Mover Advantage:
Roewe has many years of technology accumulation in new energy technology, and has demonstrated continuous optimization and innovation in the field of new energy by continuously iteratively launching products with different technical paths.
Compared with competing products, such as BYD DM-i, the Roewe DMH system has a late-mover advantage, and has better performance in parts adaptation, motor process update, and NVH control.
Clean, smooth, fast" three advantages:
Through the above design and technological innovation, the three major advantages of the Roewe DMH system are environmental protection (net), smoothness (smooth), and power response (fast), providing drivers with a comprehensive driving experience.
Overall, the Roewe D7 DMH super hybrid system has demonstrated good performance and comprehensive advantages in the plug-in hybrid field through advanced technology and innovative design, providing users with efficient, environmentally friendly and smooth travel options.