9 car trivia facts

9 car knowledge

As a driver, you need to know more about cars and understand the principles in order to drive a car better. From the perspective of the car itself, the three most important parts are the engine, gearbox and chassis. The most core part is the engine. The internal parts are complex and the assembly process requires high requirements. Only experienced masters can control it. Let’s talk about 9 trivia facts about cars. If you know 6, you can be considered a car expert.

Parking lights

Based on daily driving experience, safety warning lights need to be turned on when parking to alert passing vehicles. If the car is parked with the engine turned off, there will be no corresponding lights that can be turned on. In fact, in some foreign areas, there is a function called parking lights. If the turn signal lever is not returned to the straight position after getting off the car, the lights next to the vehicle will remain on to remind pedestrians and vehicles passing by. Domestic cars do not have this function. In European countries, it is a mandatory requirement, just like daytime running lights. However, the parking lights cannot be turned off, but the daytime running lights can be turned off.

After refueling, the power becomes stronger

Many friends have the same feeling. After refueling, the vehicle becomes more powerful and drives very smoothly. Why? Well, could it be my own misunderstanding? This has a scientific basis. When refueling, the fuel vapor in the fuel tank runs to the carbon canister and is adsorbed by activated carbon. When waiting to drive, the fuel vapor in the carbon canister is sucked into the cylinder. At this time, the internal gas concentration of the engine becomes higher, combustion is more complete, and the power is increased. It will be stronger.

Quickly check the temperature

Vehicles are generally parked in open parking lots or underground garages, the environments of which are different, especially in winter. The outside temperature is low, and the underground garage is relatively warmer. Therefore, in different environments, the cold start of the car will also have detailed changes. For example, a car in a basement has a higher idling speed during a cold start, which is set according to emission regulations. Not all cars are like this, maybe the two are opposite, for example, the external cold start speed is high. Subtle changes are usually difficult to detect.

White smoke comes out of the exhaust pipe in winter

Many new car drivers buy their cars in the spring and summer. At this time, when the car is started and driven, there will be no obvious gas in the rear exhaust , this is normal. But in winter, the exhaust at the rear of the car is completely different, white smoke is emitted frequently, and some car owners think there is something wrong with their car. In fact, it is not, but the water vapor in the exhaust pipe is liquefied and condensed into small water droplets, so it becomes visible. This is actually a normal phenomenon, so don't worry.

The fuel gauge will be more accurate on a smooth road

While the car is moving, the oil in the fuel tank is constantly sloshing. At this time, it is impossible to accurately measure the amount of fuel in the tank. The designer considers how to set up the program for testing the oil volume. In fact, when the vehicle is parked smoothly on the ground, the oil volume and height in the fuel tank are stable at this time, and the measurement results are also the most accurate. Therefore, many cars check the oil level at the moment of power-on, so the pointer on the oil meter is related to the parking state. If it is parked smoothly, it is very accurate, but if it is parked on a slope, it may be inaccurate.

A car will drive better after running at high speed

It is said that running at high speed can remove carbon deposits and improve the power of the vehicle. In fact, running at high speed removes very little carbon deposits and may be able to blow off some small carbon deposits. However, the carbon deposits accumulated over the years cannot be removed and can only be cleaned by going to a repair shop. The reason why it is easier to drive after running at high speed is that the engine operates at high speed for a long time, and a large amount of exhaust gas blows away the residue in the three-way catalytic converter. The working environment of the engine is improved, so everyone will feel that the car drives smoothly and easily.

Poor design can easily produce carbon deposits

The masters at 4S stores usually tell you to avoid driving in low gears as it is easy to form carbon deposits. Although after years of driving, cars will inevitably produce carbon deposits, the main cause of carbon deposits is not man-made, but defects in the design of the machine itself. This defect is the crankcase ventilation system. When the engine is working, part of the exhaust gas will flow into the crankcase, causing pressure to increase and oil leakage, which cannot be completely sealed.

In the early days, a pipe was used to directly discharge it into the air. Now, due to environmental protection requirements, it has to enter the combustion chamber, which results in insufficient combustion inside the engine and the formation of carbon deposits.

Electronic power assist changes with vehicle speed

During the use of the car, the steering wheel has an electronic power assist function, which can help the car owner complete the steering more easily. Under certain circumstances, electronic assist has the opposite effect. According to normal logical thinking, the faster the vehicle speed, the lighter the direction. To change lanes, you only need to turn the direction slightly. However, some cars have different settings. Because the speed is too fast when driving at high speed, the steering wheel should be heavier to ensure safety, so the electronic power assist will also act as a hindrance to prevent danger.

Gas headlights come standard with automatic cleaning

Why do we need to equip gas headlights with a headlight cleaning function? In our understanding, headlight cleaning should be High-end cars have this function, but the headlights are usually equipped on low-end models, so why do they need to install headlight cleaning? This is a legal requirement, and manufacturers must do this, because the headlights are too bright, and a single light source It can reach 20,000 lumens, so headlight cleaning is required.