Which parameter should I look at to know if the car is accelerating?

First of all, under the premise of the same engine performance, the speed of manual transmission is generally faster than that of automatic transmission. This is mainly because automatic transmission is controlled by computer, and there is always a little delay compared with manual transmission. More importantly, the shift timing of automatic gear is judged by computer according to the depth of accelerator pedal, which is not as accurate as manual gear. Let's put aside the difference between manual and automatic, and briefly talk about the acceleration ability of the car. Personally, I conclude that the acceleration ability of a car is affected by three factors: first, the torque of the engine, second, the speed range obtained by the torque, and third, the weight of the car body. If the torque is large and the range of torque and speed is wide, the acceleration ability of this car will be better under the same vehicle weight. In addition, when discussing the acceleration ability, it is always necessary to define a certain upper speed limit, such as 0~ 100KM/H, or 100KM/H~200KM/H, etc. Because the final speed of a car is always limited, the acceleration ability will be weakened before approaching the limit speed. Therefore, when you ask to judge whether a car is accelerating, you'd better make it clear whether it is driving at a low speed or at a high speed. Different cars are different at different speed intervals. In short, if a car has a large engine torque, a wide speed range (for example, covering 1500 ~5000 rpm), a manual transmission, and its own weight is lighter than that of other cars at the same level, then the speed-up ability of this car should be very good. In addition, it should be said that the above is mainly about the linear acceleration ability of a car, and the real car will not always be in good linear road conditions when driving, so in addition to the speed-up ability, the handling performance of the car also determines the real driving speed of the car. The handling performance includes the performance differences of chassis, brakes and tires. Personally, I think the factors that affect the stability of automobile at high speed include the following aspects:

First, the weight of the car; The second is the gap between the car body and the ground; Third, the specifications of the forum; Fourth, the height and width of the car; 5. Wind drag coefficient; Adjustment of intransitive verb chassis