After learning these car knowledge in 5 minutes, you are an expert in the eyes of the old driver!

Some people may have a deep understanding, and a group of people who lovecarIf you don’t know anything about cars, you will be unable to get in when you chat with your friends. If you don’t get in, you will be very embarrassed. If you are embarrassed, you will feel that you need to increase your knowledge of getting off the car. So how do you make yourself look familiar with cars simply, quickly and efficiently? Master the following basics, but most people certainly do not fully understand the car knowledge! What is "wheelbase"? What is the impact of the wheelbase length?

The wheelbase refers to the distance between the front axle and the rear axle. It has an impact on handling, minimum turning radius, body stiffness, indoor space, and passing ability. For example, the longer the wheelbase, the more difficult it is to improve the handling. Simple The understanding is that small cars are more flexible and large cars are more awkward. However, this is not important in China. The most important point is that long wheelbases tend to perform better in indoor spaces, which Chinese people prefer.

Why should the negative pole be cut off when the power supply is cut off?

Everyone knows that cars use electricity,Accumulatorno powerstarterIt will not be able to run, and the vehicle will not be able to start.At the beginning, the positive and negative poles of many cars’ electrical equipment were connected to the negative pole of the battery. However, there were more and more electrical equipmentWire harnessThe negative poles are uniformly connected to the body, commonly known as "grounding".

Currently includes all control units, actuators,switchAll are "grounded" through the car body. After disconnecting the negative electrode, even if the tool touches the positive wire during maintenance, it is not afraid of causing a short circuit; and if the positive wire is disconnected, any point of the battery's positive electrode and the car body may be short-circuited. , Causing damage to the electrical components on the car, and even laying the groundwork for the car's spontaneous combustion!

How to distinguish between active safety system and passive safety system?

Active safety system, as the name implies, is a system that can prevent accidents when the car does not occur, such asABS, EBD, ESP, lane change assist and activebrakeand many more.

A passive safety system is a system that protects the occupants in the car during or after an accident, such asairbag,seat beltIn the event of an accident, the people in the car can be protected as much as possible; and the battery cut-off switch and the fuel pump cut off the fuel supply system can avoid leakage and spontaneous combustion after an accident.

What is the reason for the white, black and blue smoke from car exhaust?

White smoke: It is mainly water vapor, which is very obvious when the car is cold in winter when the temperature is low. If it disappears after a period of time, it is normal, but if white smoke is emitted for a long time, andexhaust pipeIf there is water dripping out, it may be caused by water entering the engine.

Blue smoke: Mainly engine oil. If the engine emits blue smoke, it means that the engine has burned the engine oil, and the oil level will be low. It is best to go to the 4S inspection.

Black smoke: The mixture is too thick, which means that the amount of fuel injected is not up to standard. It may be that the fuel injection nozzle is leaking, the fuel pipe is clogged, or the engine has too much carbon.

What should I pay attention to when parking a car for a long time?

1. The battery is most affected by long-term parking, so it is recommended to charge the battery once every three months;

2. WilltireAdjust the tire pressure to a higher point. When a new car has not undergone PDI inspection, it will generally be much higher than the standard tire pressure.tireThe protection of the tire, because long-term parking is likely to cause deformation of the part that touches the ground, conditions permitting, it is best to periodically rotate the tire to change the force surface;

3. If the vehicle has been parked for a long time, it is best to check the oil level before starting. If it has been parked for more than one year, the oil must be changed.

Of course, this knowledge is far from enough if you want to install 13 to be seamless, please listen to the next time.