如何选择家用汽车（How to choose the family car）.docVIP

如何选择家用汽车（How to choose the family car） Car: what kind of measure is the most scientific? To measure the quality of a car, technical performance is an important basis. Among them, power and economy are the main indexes. Of course, in assessing the quality of the car, we must also consider the sales price and the personal needs of the consumers themselves. Today, four indicators are popular in the market. First: Power The power index of automobile is mainly expressed by the maximum speed, the acceleration capacity and the maximum climbing slope. It is the most basic and important performance of the vehicle performance. In our country, these indexes are obtained by automobile manufacturers according to the test standards stipulated by the state and through the prototype test. Maximum speed: the maximum speed that a car can reach in a calm, horizontal, well asphalt or concrete pavement. In accordance with the provisions of our country, to 1.6 km long test section of the last 500 meters as the highest speed test area, a total of four times, take the average. Acceleration (acceleration time): the ability of a vehicle to increase its speed at the speed of travel, usually indicated by acceleration time and acceleration distance. The acceleration capability consists of two aspects, namely, in situ acceleration and overtaking acceleration. The parameters of acceleration in situ are introduced. Because of the acceleration of the vehicle with good starting performance, overtaking acceleration is just as good. Standing start acceleration refers to the car from the stationary state after the start, with the greatest strength of continuous acceleration shift to top gear up to a certain distance or speed the time required, it is the most important parameter reflecting the automobile dynamic performance, the shorter the better. Second: Economy The economic index of automobile is expressed mainly by fuel consumption, and it is an important performance of automobile performance. In pa