What are the reasons for the vibration in Binyue's D gear?

[SanErin]

The reasons for the vibration in Binyue's D gear are: 1. The engine speed is too high: the hydraulic torque converter transmits more power, and the impact force when shifting gears is large, resulting in obvious vibration; 2. The brake is not pressed tightly: the engine power will be directly transmitted to the wheels when shifting gears, and if the brake is not pressed tightly, it will cause the wheels to move slightly when shifting to D gear, making the vehicle move forward and causing strong vibration; 3. The brake is released too early: without the restriction of the brake, the driving wheels will gain power when the gear is engaged, causing the vehicle to move forward directly and resulting in vibration. To avoid body vibration when shifting to D gear, shift gears when the speed is stable, press the brake tightly when shifting gears, and release the brake only after the power is transmitted to the wheels. Taking the Geely Binyue as an example, its body dimensions are: 4330mm in length, 1800mm in width, and 1609mm in height, equipped with a 1.5t engine, 7dct transmission, and a hybrid system with ternary lithium batteries.