Performance is an important indicator to measure the quality of a model. It involves power, safety, economy, handling and other aspects, and is the ultimate goal that automotive engineers tirelessly pursue. A good car must perform well in all aspects of performance in order to win the favor of consumers. Let's take a look at the mysteries of a car's performance, its design and its charm.
Dynamic performance
Acceleration performance has always been an important indicator of a car's dynamic performance. It is usually judged by the acceleration time of 0-100 km/h, and the lower the value, the faster the acceleration. The factors that affect the acceleration performance mainly include the maximum power of the engine, the torque output curve, the transmission ratio, and the quality of the whole vehicle. The power reserve when driving at a constant speed is also important, as it determines the power response when accelerating to overtaking. The test method is usually to press the accelerator throttle at a constant speed and observe the magnitude and time of the increase in speed. Influencing factors include engine speed, torque reserve, transmission shift logic, etc.
Safety performance
Safety performance is essential to ensure the safety of occupants. It can be divided into two categories: active and passive safety. Active safety is mainly achieved by body structure design and various active safety assistance systems, such as the amount of high-strength steel used in the body, the design of anti-collision beams, AEB automatic emergency braking, lane departure warning, etc. Passive safety relies on devices such as airbags and seat belts to protect occupants in the event of a collision. For new energy vehicles, battery thermal runaway, high-voltage insulation, and post-crash power release control are all top priorities.
Economic performance
Economic performance directly affects the cost of car owners. For traditional fuel vehicles, fuel consumption performance is the main criterion for judging economy. For new energy vehicles, it is necessary to consider factors such as vehicle energy consumption and battery cycle life. Car companies need to find a balance between economy and power, which is a profound science.
Handling stability
Handling stability is a combination of fun and safety to drive. It includes steering precision, chassis handling, braking stability and many other aspects. Influencing factors include suspension tuning, body center of gravity height, tire tread design, etc. Excellent handling not only brings pleasure to the driver, but also ensures maximum driving safety in the event of dangerous situations.
Pitfalls and suggestions
Although the performance of modern cars is becoming more and more perfect, there are still some potential pitfalls, such as poor visibility in blind spots, and the impact of vehicle height on stability. Consumers need to be aware of this and take appropriate precautions, such as using assistance systems correctly and paying attention to the speed between vehicles. Automakers should also actively listen to user feedback and continuously improve product performance. Safety is no trivial matter, only an all-round attention can truly escort everyone's travel.