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External engine characteristics The Binance downloadengine is the heart of the vehicle, which has a great impact on the driving performance of the car.The external characteristics of the engine refer to its performance in actual work, including acceleration performance, torque output, fuel economy, noise, vibration and other aspects. The following is a brief introduction to the expansion of the external characteristics of the engine. I. Acceleration performance The acceleration performance of the engine means that under normal fuel consumption and standardized operation conditions, the engine can quickly accelerate the vehicle from the static state to a certain speed, and the value of this speed is usually 100km/h. And the acceleration performance itself is reflected by the joint action of multiple factors. The first consideration is the displacement and power of the engine. The larger the displacement, the greater the maximum output power that the engine can produce. For the same type of vehicle, the stronger the horsepower, the better the acceleration performance. Secondly, the transmission ratio of the transmission system will also affect the acceleration performance.The transmission ratio of the transmission system is the degree to which it converts from one gear ratio to another gear ratio when shifting gears. The higher the transmission ratio, the greater the output power of the wheel, and the acceleration performance will naturally be better. II. Torque output torque output refers to the amount of torque generated by the engine. This torque refers to the size of the torque transmitted from the engine to the wheel at a certain point in the engine speed. When the vehicle needs to climb or carry weight, this torque becomes very important. The size of the torque output depends on multiple factors, the most important of which are the engine displacement, valve number, cylinder diameter, stroke, and the setting of the ignition system and power transmission system (the manual is the same). Under normal circumstances, the larger the cylinder diameter and the longer the stroke, the greater the torque output of the engine. Moreover, multi-valve and high male gods can improve the compression ratio, thus increasing the output of engine torque.III. Fuel economy refers to the ability to complete a certain amount of work with as little fuel consumption as possible. This feature is very important for cars. People require cars to save fuel, because it can not only reduce environmental pollution, but also save fuel costs. The size of fuel economy also depends on many factors, the most important of which is the engine structure and power system setting. The displacement and power of the engine will also affect fuel economy. Generally speaking, the smaller the displacement and equipped with an efficient fuel injection system, the better the fuel economy. However, this is not the only rule that car manufacturers will adjust fuel economy according to the design concept of the vehicle. IV. Noise, vibration and other characteristics The external characteristics of the engine also include noise and vibration and other aspects. As car drivers pay more and more attention to the riding experience, vehicle noise and vibration have become important issues.At present, many car manufacturers are investing in improving noise and vibration control technology. The size of the noise is related to the structure of the engine, the quality of the operating mechanism, etc. During the operation of the engine, some noise will be generated by the action of inertial force, and it will also be affected by airtightness, mechanical transmission and external vibration. Opening a shock-absorbing control device can also significantly reduce the noise and vibration of the engine. In a word, the external characteristics of the engine show its performance in actual work, which directly affect the driving performance of the vehicle. Automobile manufacturers have always been committed to optimizing the external characteristics of engines and power systems to provide consumers with a better driving experience.

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