Electric car instrument more joy! Take off if you're not careful?

Editer: 　　Time: 2020-10-26　　Reading times: 1054

I don't know if you have ever experienced such a picture: you are riding an electric car, starting from the same traffic light, and you can see the speed of the dashboard "soaring" as if you were galloping in the plot of the movie. What happened after that could be Obviously, their meters have reached 70km / h. why do the electric vehicles nearby still surpass them one after another?

Today, we will take you to understand the "joy" secret of electric vehicle meters.

< H4 > 01 what is electric vehicle joy watch?

The joy meter of electric vehicle means that the actual driving speed of electric vehicle does not adopt Hall sensor, which is not consistent with the speed of vehicle instrument, which is mainly reflected in the false appearance of speed measurement when we ride electric vehicle, the speed displayed on the instrument is greater than the actual driving speed.

To be simple, there is a certain deviation between the speed of the electric vehicle and the speed stated by the manufacturer. There is a certain range and moisture. The originally indicated speed is 50km / h, but the actual driving speed can only reach about 35km / h. therefore, the speed measured by the joy meter is not the actual driving speed of the electric vehicle, but a kind of visual satisfaction for users.

What is the normal instrument speed of < H4 > 02?

To tell you the truth, it is also a normal phenomenon that there is an error between the actual speed and the speed displayed on the meter. For the old drivers who often drive cars, they all understand the mystery. However, the deviation between the actual speed and the indicated speed is not too large, so they do not pay too much attention to this problem.

However, according to the national standard, the speed indicated by the speedometer on our driving tools must not be lower than the actual speed, and the indicated speed and actual speed must meet such requirements: 0 ≤ indicated speed - actual speed ≤ (actual speed / 10) + 4.

When the indicated speed is 30km / h, the actual speed should be between 23.6-30km / h; if the indicated speed is 50km / h, the actual speed should be between 41.9-50km / h.

How to calibrate the joy meter?

When it comes to the calibration of the joy meter, this is a technical work. When the instrument panel of an electric vehicle is disassembled, there is a resistance that can be adjusted left or right. This should be adjusted according to the actual driving conditions of the vehicle, because the resistance settings of each vehicle are different. Although the joy meter can be adjusted, it is difficult to grasp the range of adjustment, Therefore, it is not recommended that users adjust themselves.

If you still want to adjust the meter more accurately, you can also try the following two methods:

Method one: expose the resistor to the outside, then ride it and calibrate it with GPS speed.

Method 2: find a code meter for mountain bike, set the wheel circumference on the bicycle code meter, rotate the wheel, see the value of the bicycle code meter, and then adjust the potentiometer in the electric vehicle meter.

Now you should know the past and present life of joy watch! Let your electric vehicle realize the real fly.