汽车发动机书读书笔记作文
    英文回答：
    The automotive engine is a complex and fascinating machine that is responsible for powering vehicles. It is a type of internal combustion engine, which means that it burns fuel inside the engine to create power. The engine is made up of several key components, including the cylinder block, the cylinder head, the pistons, the crankshaft, and the camshaft.
    The cylinder block is the main structural component of the engine. It is made of cast iron or aluminum and houses the cylinders, which are the chambers in which the pistons move. The cylinder head is located at the top of the engine and forms the combustion chamber. The pistons are cylindrical-shaped components that move up and down inside the cylinders. They are connected to the crankshaft by connecting rods. The crankshaft is a rotating shaft that converts the reciprocating motion of the pistons into rotary motion. The camshaft is a shaft that controls the timing of the valves, which open and close to allow air and fuel into the cylinders and expel exhaust gases.
    The engine operates through a series of four strokes: intake, compression, power, and exhaust. During the intake stroke, the intake valve opens and the piston moves down, drawing air and fuel into the cylinder. During the compression stroke, the intake valve closes and the piston moves up, compressing the air and fuel mixture. During the power stroke, the spark plug ignites the air and fuel mixture, causing it to burn and expand. This expansion forces the piston down, which in turn rotates the crankshaft. During the exhaust stroke, the exhaust valve opens and the piston moves up, expelling the exhaust gases from the cylinder.
    The automotive engine is a marvel of engineering that has revolutionized transportation. It is a complex and powerful machine that is essential for the operation of vehicles.
    中文回答：
    汽车发动机是一台负责为车辆提供动力的复杂而迷人的机器。它是一种内燃机，这意味着它在发动机内部燃烧燃料以产生动力。发动机由几个关键部件组成，包括缸体、缸盖、活塞、曲轴和凸轮轴。
    缸体是发动机的主要结构组件。它由铸铁或铝制成，并容纳气缸，气缸是活塞移动的腔室。缸盖位于发动机顶部并形成燃烧室。活塞是圆柱形部件，在气缸内上下移动。它们通过连杆连接到曲轴。曲轴是一个旋转轴，它将活塞的往复运动转换为旋转运动。凸轮轴是一个控制气门正时的轴，气门打开和关闭以允许空气和燃料进入气缸并将废气排出。
    发动机通过一系列四个冲程运行，进气、压缩、动力和排气。在进气冲程中，进气门打开，活塞向下移动，将空气和燃料吸入气缸。在压缩冲程中，进气门关闭，活塞向上移动，压缩空气和燃料混合物。在动力冲程中，火花塞点燃空气和燃料混合物，使其燃烧并膨胀。这种膨胀迫使活塞向下移动，进而旋转曲轴。在排气冲程中，排气门打开，活塞向上移动，将废气从气缸中排出。
    汽车发动机是机械工程的奇迹，它彻底改变了交通运输。它是一台复杂且强大的机器，对于车辆的运行至关重要。
汽车发动机