What are the main factors that determine whether a car is performing well or not? Briefly describe i

Performance is the configuration of the car design, mainly the engine, interior design, operating system, safety system, and finally the appearance.

There is a lot of confusion about the solidity of the engine, gearbox, tires, wind resistance, chassis, but at present, it seems that the higher the better.

Engine displacement turbocharged.

Your requirements are too high, such a car does not have.

The dynamics of the car.

The fuel economy of the car.

Braking properties of the car.

The stability of the car's handling.

The ride of the car.

Passability of the car.

Emission pollution and noise pollution from automobiles.

What is the role and composition of the engine valve mechanism?

The engine valve mechanism (internal combustion engine valve mechanism) is in accordance with the requirements of the working cycle and ignition sequence carried out in each cylinder of the engine, and regularly opens and closes the intake and exhaust valves of each cylinder, so that the fresh combustible mixture (gasoline engine) or air (diesel engine) can enter the cylinder in time, and the exhaust gas can be discharged from the cylinder in time.

All kinds of valve train can be divided into two parts: valve group and valve transmission group. The valve train includes the valve and the parts associated with it, and its composition is basically independent of the form of the valve train.

The valve train is all the parts from the timing gear to the valve action, and its composition varies depending on the form of the valve mechanism, and its function is to drive the valve to open and close at a regular time.

It is determined by the chassis and suspension of the vehicle, as well as the dynamic performance and handling performance of the engine.

There are many factors such as the dynamics, braking, and stability of the car.

Oil, engine machining accuracy, vehicle assembly accuracy.

When the performance of the vehicle is reduced, the oil and oil filter can be changed every 5000 km, and the air filter and gasoline filter can be replaced every 10000 km, otherwise the impurities in the air, fuel and oil will cause parts to wear and clog the oil circuit, thus affecting the normal operation of the engine. We should take care of our cars more and maintain them regularly.

During driving, if you feel that the steering wheel suddenly sinks, there is a clear sense of resistance when steering, and the steering wheel cannot automatically return to the middle after steering, it may be that the tire pressure on both sides of the front wheel is different, or there is a problem with the power assist system and power assist lubricating oil. The engine needs not only oil, but also water for continuous cooling. If the tank is leaking, be sure to stop it immediately.

If you see a leak at the bottom, it could be a leak in the tank or glass jug.

If it is light-colored water with bubbles, the tremor can be caused by the leakage of glass water. In this case, you can still drive. If yellow, green, and pink antifreeze appears, the tank is leaking and must wait for the trailer to be supported.

If the car is parked outdoors for a long time, exposure to sunlight, dust, chewing gum, bird droppings, etc. will accelerate the aging of the paint. Many oxidized vehicles can be seen with the naked eye, black and yellow paint, that is, car washing and waxing. This is the most common thing we do in our daily maintenance, as the oil has properties of low temperature cranking protection and anti-oxidation.

It can ensure better lubrication effect of the engine. You don't have to follow the car's instructions. You have to judge based on the actual situation.

If the vehicle is not frequent, the oil change time can be extended. If the vehicle environment is not good, you can change the oil in advance. Blockage of the conversion of the three-way catalyst is also common, which is mainly related to the fuel we usually add.

If the added oil is not of very good quality, the oxygen sensor may not work properly, causing problems with the vehicle's air intake, ignition, and exhaust. Fuel consumption increases, power decreases. In this case, clean it with a three-action catalytic cleaner to ensure it runs like a new car.

It is necessary to change the oil every 5,000 kilometers, as well as replace the filter, replace the air filter and gasoline filter when 10,000 kilometers, and always pay attention to the operation of the car and the state of his lubrication of the oil and various parts, and repair it in a timely manner when problems are found.

First of all, you can go to the relevant 4S repair shop for maintenance in time. It can effectively enhance the performance of the car. And in the overrush of driving, you should pay attention to your own experience.

Reasonable driving. In order to effectively extend the life of the vehicle. And you can also do some small maintenance by yourself.

In such a situation, you must be bored to cover the spring of the car in a timely manner, and then you should also improve your driving skills, you must be cautious when driving, do not step on the accelerator, pay attention to the realistic speed, pay attention to whether the engine and gearbox are faulty.

It is possible to replace the oil reed and oil filter once every 5,000 kilometers, and replace the air filter and gasoline filter every 10,000 kilometers, otherwise the impurities in the air, fuel and engine oil will cause the wear and tear of the digging parts to block the oil circuit and cause the normal operation of the engine.

Personally, when I buy a new car, the most important factor is the performance of the vehicle.

First of all, vehicle performance is the most important factor in determining whether a car is called a good car or not. A good car should have excellent power performance, comfortable driving experience and low noise and vibration performance. A good vehicle should also have good body stability and handling.

I take a closer look at the various models before I buy a car and actually experience their performance through test drives and other things. I look at the details inside and outside the car, such as the air conditioning, the suspension system, etc., to make sure that everything is performing according to my requirements. Ming Sui.

Secondly, vehicle performance also plays an important role in travel comfort and safety. Daily travel must meet the requirements of ride comfort, if the performance of the vehicle is not good, it will cause problems such as unstable ride, loud noise, and unsmooth internal air, which will affect the travel experience. In terms of safety, vehicle performance is also important, and some vehicles with poor performance, such as insensitive brakes, will directly threaten the lives of drivers and passengers.

Finally, for buyers, value is a factor that cannot be ignored, but good performance is often an important part of added value, which is the guarantee of the long-term use value of the vehicle. As we always say, it's worth the money, and if a car offers excellent performance, its value will also grow at the same time.

To sum up, for me, the performance of the vehicle is the most important factor when buying a new car, because it is directly related to the comfort, safety and long-term value of the vehicle. Of course, in the process of buying a car, we also need to consider other factors, such as economy, brand reputation and after-sales service, but most of these factors also need to be effectively guaranteed based on good performance.

Answer]: B The power of the car refers to the average driving speed that can be achieved by the longitudinal external force when the car is driving in a straight line on a good road surface, which indicates the ability of the car to transport goods or passengers at the maximum possible average speed. Among the various driving properties of automobiles, power is the most important and basic ability.