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所在平台: Udemy |
课程主页: https://www.udemy.com/course/fundamentals-of-internal-combustion-engines/
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课程名称：内燃机基础 - IC Engines 课程概述： 内燃机是一种热机，将燃料中的化学能转化为机械能，通常以旋转的输出轴形式提供。燃料的化学能首先通过与空气的燃烧或氧化转化为热能，这种热能会提高发动机内气体的温度和压力。高压气体在发动机的机械机构中膨胀，这种膨胀通过发动机的机械连接转化为旋转的曲轴，成为发动机的输出。本课程主要关注应用工程科学，尤其是热科学，来理解内燃机的工作原理。 课程目标包括：使学生熟悉发动机的命名法，描述内燃机的工作过程，并深入了解如何对发动机性能进行建模和分析。课程将讨论用于表征内燃机整体性能的工程参数，包括奥托循环、柴油循环、双循环和米勒循环等主要发动机循环。讲座将应用热力学原理，确定发动机循环中的温度和压力，以及重要的发动机性能参数，如指示热效率和指示平均有效压力。此外，我们还将研究发动机性能如何依赖于发动机的压缩比和负载。 课程特别强调构建理想化模型的过程，以代表发动机中实际的物理情况。在整个课程中，我们将计算表征内燃机运行的各种热力学和机械参数的值。我的目标是帮助学生获得扎实的内燃机理论基础，课程中将广泛使用已解决的数值示例，以帮助学生理解理论如何应用于分析实际案例。
The internal combustion (IC) engine is a heat engine that converts chemical energy in a fuel into mechanical energy, usually made available on a rotating output shaft. Chemical energy of the fuel is first converted to thermal energy by means of combustion or oxidation with air inside the engine. This thermal energy raises the temperature and pressure of the gases within the engine, and the high-pressure gas then expands against the mechanical mechanisms of the engine. This expansion is converted by the mechanical linkages of the engine to a rotating crankshaft, which is the output of the engine.The main focus of this course is on the application of the engineering sciences, especially the thermal sciences, to internal combustion engines. The goals of the course are to familiarize the student with engine nomenclature, describe how internal combustion engines work, and provide insight into how engine performance can be modeled and analyzed. In this course, we discuss the engineering parameters that are used to characterize the overall performance of internal combustion engines. Major engine cycles are covered such as Otto, Diesel, Dual and Miller cycles. The following lectures will apply the principles of thermodynamics to determine temperatures and pressures throughout an engine cycle, in addition to important engine performance parameters such as: Indicated Thermal Efficiency and the Indicated Mean Effective Pressure. Also we investigate the dependence of engine performance on engine compression ratio and engine load.An aspect upon which we have put considerable emphasis is the process of constructing idealized models to represent actual physical situations in an engine. Throughout the course, we will calculate the values of the various thermal and mechanical parameters that characterize internal combustion engine operation.My goal in this course is to help students acquire a solid theoretical background of internal combustion engines. Solved numerical examples are used extensively in this course to help students understand how theory is applied to analyze practical applications.
