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Engine characteristic curve optimizes engine performance Engine characteristic curve is Global trade intelligence newsletterone of the important bases for automotive engineers to optimize engine performance. With the continuous emergence of various models of cars, car owners' requirements for engine performance are also getting higher and higher. Therefore, optimizing engine performance and enhancing car driving performance has become an important problem for automotive engineers to solve. This article will introduce the role and application of engine characteristic curve in optimizing engine performance. The engine characteristic curve is an image that characterizes the power output of the engine. It usually takes the rotational speed as the horizontal coordinate and the throttle opening as the vertical coordinate. This figure shows key indicators such as output power, torque and fuel consumption of the engine at different speeds and throttle openings, that is, the engine performance curve.The engine performance curve is one of the key factors in the performance of the whole vehicle. By analyzing the engine characteristic curve, key performance parameters such as the maximum power and maximum torque of the engine can be obtained. At the same time, by optimizing the engine characteristic curve, the performance of the engine and the driving experience of the car can be further improved. The optimization of the engine characteristic curve refers to the optimization of the compression ratio, valve and exhaust system of the engine to achieve optimal fuel consumption and output performance. By optimizing the characteristic curve of the engine, the reliability, operation stability and output performance of the engine can be improved. Therefore, the optimization of the engine characteristic curve is an important means to improve engine performance. When optimizing the characteristic curve of the engine, the following aspects need to be considered: First, the speed range of the maximum power output needs to be considered. The engine usually reaches the maximum power output within a certain speed range, generally around the peak speed.Therefore, when optimizing the characteristic curve of the engine, it is necessary to make the engine provide higher maximum power output within the speed range of the peak speed. Secondly, it is necessary to consider the speed range of the maximum torque output. The speed range of the maximum torque output is usually within a certain speed range below the peak speed, and the downward trend is also relatively moderate. Therefore, when optimizing the characteristic curve of the engine, it is necessary to make the engine provide a higher maximum torque output in the speed range below the peak speed. Thirdly, the response performance of the engine needs to be considered. The response speed of the engine is one of the important indicators to measure the performance of the engine. When optimizing the characteristic curve of the engine, it is necessary to consider improving the response performance of the engine so that the engine can respond to changes in the trottle faster. Finally, it is necessary to consider the fuel economy of the engine. The fuel economy of the engine is one of the important indicators to be considered when optimizing the engine characteristic curve.If the engine has good fuel economy, the fuel consumption of the car will be low. In summary, the engine characteristic curve is one of the important bases for automotive engineers to optimize engine performance. Through the analysis and optimization of the engine characteristic curve, key performance indicators such as the maximum power and maximum torque output of the engine can be improved, and the driving performance and fuel economy of the car can be further improved. Therefore, optimizing the characteristic curve of the engine is an important task to improve the performance of the car.

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