What is the chassis analysis of the Song Plus DM-i?
3 Answers
The shock absorber and spring of the BYD Song Plus DM-i chassis are integrated, similar to the front MacPherson strut, which saves space. The link is just a link and serves no other purpose, while the rear suspension uses a three-link rear suspension. Below is its related introduction: Definition of DM-i: DM-i utilizes an ultra-high thermal efficiency engine and an ultra-high efficiency EHS hybrid system, paired with power-type blade batteries. These three major components maximize efficiency under technological support, achieving incredible fuel consumption. Advantages of DM-i: The acceleration is very linear, with good speed increase, responsive and precise. No sense of jerkiness is felt.
I've driven quite a few cars, and the chassis of the Song PLUS DM-i left a deep impression on me. The front suspension uses a MacPherson strut structure, while the rear features a multi-link independent suspension. This combination is tuned for comfort, and you can clearly feel the vibrations being softened when going over speed bumps. What's special is that the battery pack is installed beneath the chassis, lowering the center of gravity by about 20% compared to regular SUVs, resulting in excellent roll control during high-speed cornering. However, the ground clearance is only about 160mm, so you need to be extra careful on rough roads. The chassis underbody protection is quite solid, with double-layer protection for the battery pack, but it's still advisable not to exceed the officially specified wading depth during rainy conditions.
The chassis layout of this car is quite distinctive, as I've observed it in a lifted state. The front axle position features an electric motor replacing the traditional engine, significantly simplifying the space required for the front MacPherson strut suspension. The rear multi-link suspension is ingeniously designed, with four control arms arranged reasonably to ensure direct tire grip transmission during turns. The battery pack is entirely embedded in the middle of the frame, achieving a nearly 50:50 weight distribution, which eliminates any front-heavy sensation when driving. On gravel roads, the suspension feedback is crisp and responsive, though special attention should be paid to the battery casing at the lowest point of the chassis. Even with the factory-installed resin protective plate, it's still possible to get damaged by large rocks.
