Home is also close to the company. Drive, every day 1, 2km. It seems that driving short distances every day is not good for the car. No, the car has been parked over there, which seems to be more prone to problems.

Which of these two situations is more harmful to the car, and what problems may occur if it is not opened for a long time? First of all, if you choose not to drive, what might happen to the car?

Stop for 2 months, and the battery may be dead.

First of all, the battery, even if the car is stationary, like ECU and anti-theft system, some sensors are working, which will produce some electrostatic current. Just like falling asleep, metabolism has not completely stopped, has it? The heart is beating and the breath is breathing, right? Yu and Wu Zhenyun published a paper "Analysis of Calculation Method of Static Current Parameters of Automobile" in the magazine of Automotive Practical Technology. It is mentioned that the static current parameters of mainstream vehicles are between 10-30mA.

Coupled with the self-discharge of the battery itself, the two losses add up. If the car is parked for 2 months, the battery may not catch fire due to power loss. At this time, call a master to get the electricity. Thirty or fifty dollars is the beginning, and the Chinese New Year holiday will definitely not pass, and every time there is no electricity, the battery life will be shortened.

Bai chong, Shaanxi university of science and technology, master thesis, research on the influence of charge and discharge control strategy on battery efficiency and life. Internal experiments have been done: when the battery discharge depth is 25%, the battery cycle life is about 1500 times; When the discharge depth is 100%, the cycle life is only 250 times.

In other words, the loss of primary electricity is almost equivalent to six normal charges and discharges. If the power supply fails too many times and the battery is scrapped, please replace it with a new battery. Cheap 3 or 400 can't run, and it has a start-stop function, which may even be more than twice as expensive.

If it is stopped for more than half a year, the tire may be deformed.

If you stop for a long time, more than half a year, the car's tires may also have problems. Long-term parking, the weight of the whole vehicle, all concentrated on the small piece of tire in contact with the ground, just like our feet standing under stress. Aren't the tires round? Uneven stress does deform.

There are similar complaints on the car quality network. The owner bought an imported Land Rover Star Vein at the Land Rover 4S store. The car was parked in the warehouse of 4S shop for 5 months, which led to the deformation of the tire stress point.

When the car is driving at high speed, the body will shake strongly, and finally the tires can only be changed. Not to mention this luxury car, 65438+100000 family car, one tire, 3400 each.

If the parking environment is not good, the loss will be even greater. Then if the parking environment is not good, the damage to the car may be even greater. 18 18 golden eye reported a news on 20 19 that Ms. Li of Xiaoshan had parked her car in the basement before going on a business trip. Because it was too wet, it only stopped for more than 20 days, and the whole steering wheel, seat and foot pad were covered with mold, even a little on the engine. Finally, I went to the garage to clean it outside and inside, and spent more than 1500. So costs and risks do exist.

If you drive, what problems may arise? Let's have a look. I will keep driving, but what might happen if it is only 1 and 2km every day?

The maintenance cycle should be shortened.

First of all, the maintenance cycle of a car may be shortened, and more money may be spent on maintenance.

For example, it is mentioned in Honda Fit's maintenance manual that if the mileage is less than 8km each time, or if it is less than 16km in the environment below 0℃.

Driving under harsh conditions, the replacement cycle of engine oil, machine filter and gearbox oil must be shortened.

In other words, under normal circumstances, such as minor maintenance, change the oil once every six months, but if you drive so short every day, you have to do maintenance once every three months. Fit, it costs more than 400 yuan for a small maintenance in a 4S shop, and 800 yuan more for 1 year, right?

Cars are more prone to carbon deposition.

In addition to more frequent maintenance, cars often travel such a "short distance" and are more prone to carbon deposition. Yang Qi of Jilin University has a master's thesis "Research on Control and Evaluation Method of Engine Carbon Deposition".

It is mentioned that when the engine is turned off, the fuel injector does not immediately stop injecting fuel, and the on-board computer will control the fuel pump to work for 2 to 3 seconds to ensure the necessary fuel pressure of the fuel system.

However, this part of the fuel will not participate in combustion. If the engine temperature is not high enough, it is easy to oxidize and form carbon deposit at low temperature, which is exactly the case for short-distance driving.

Wang of South China University of Technology also has a master's thesis, experimental study on the mechanism and prevention of carbon deposition in intake valve of port injection gasoline engine. There is a comparison: the temperature of a vehicle that travels less than 10km one way is about 90℃ when the engine is turned off, and after cooling for 20 minutes, the temperature drops 10℃.

The temperature of a vehicle traveling more than 30km in one way is about 95℃ when the engine is turned off. After cooling for 20 minutes, the temperature only drops by 3℃. Just like hot water, boiling water at 100℃ is definitely slower than hot water at 80℃. The engine temperature itself is relatively low, and it drops rapidly, making it easier to produce carbon deposits.

Which is more harmful to the car? Can you drive it?

It seems that whether you don't drive for a long time or drive 1 and 2km every day, it will do harm to your car. Which is more harmful? If we only consider the money lost on the books, it may be more money that has not been lost for a long time. The cost of replacing batteries and tires alone is 800,900 yuan. In case the interior is moldy, the cost of 15002000 yuan will exceed 20003000 yuan.

Every day 1, 2km is opened. If it is little or short, the annual maintenance cost may be higher. I just calculated that it was 800 yuan. Cleaning up carbon deposits is not as expensive as we thought. We should take time to stop by the highway, buy some fuel treasure and clean the inside of the garage. According to the general ledger, it should not exceed 1000 yuan.

In fact, regardless of the factor of money, the conclusion may come again. Parking for a long time is harmful and loss to the car. Let's pay attention. In fact, there are ways to avoid it.

For example, if the battery is dead, we can start it every other week, take a walk in the car, or simply buy a charger and hang it there to charge it, so that the battery will not go wrong. The influence of long-term short-distance driving on cars is inevitable.

It can't be said that I drove 1km to the company, circled 15 downstairs, and then went to work in the company. Nobody does that, right? The generation of carbon deposit is determined by the working conditions of the engine. Unless the engine is replaced by an electric motor, it is difficult to avoid this problem.

This is not to advise people not to drive or use, but to buy. Driving by yourself is definitely much more comfortable than taking a taxi in the wind. So there is no need to dwell on this issue. Use the car when it is time to use it, just to let everyone know the quantity in advance and have a feeling.