power stroke

简明释义

膨胀行程

英英释义

例句

1.In a four-stroke engine, the power stroke 动力冲程 is the second stroke where energy is produced.

在四冲程发动机中，动力冲程动力冲程是第二个冲程，在此期间产生能量。

2.During the power stroke 动力冲程, the crankshaft converts the linear motion of the piston into rotational motion.

在动力冲程动力冲程期间，曲轴将活塞的线性运动转化为旋转运动。

3.The engine's power stroke 动力冲程 occurs when the piston is pushed down by the combustion of fuel.

发动机的动力冲程动力冲程发生在燃料燃烧时活塞被向下推动。

4.The efficiency of an engine can be measured by the effectiveness of its power stroke 动力冲程.

发动机的效率可以通过其动力冲程动力冲程的有效性来衡量。

5.A misfire during the power stroke 动力冲程 can lead to a loss of power in the engine.

在动力冲程动力冲程期间的点火失败可能导致发动机功率损失。

作文

The concept of a power stroke is fundamental in understanding various mechanical systems, especially engines. A power stroke refers to the phase in an engine cycle where the combustion of fuel occurs, resulting in a significant increase in pressure that drives the piston downwards. This action is crucial for converting the chemical energy stored in fuel into mechanical energy, which ultimately powers vehicles and machinery. In a typical four-stroke engine, there are four distinct phases: intake, compression, power, and exhaust. The power stroke is the third phase, following the compression stroke. During the compression stroke, the air-fuel mixture is compressed, increasing its temperature and pressure. Once the piston reaches the top of the cylinder, a spark plug ignites the mixture, leading to an explosive reaction. This explosion forces the piston down, creating the power stroke.The efficiency of the power stroke is vital for the overall performance of the engine. Engineers often focus on optimizing this phase to ensure maximum power output while minimizing fuel consumption. Innovations such as turbocharging and direct fuel injection have been implemented to enhance the effectiveness of the power stroke. These technologies allow for better air-fuel mixing and more complete combustion, resulting in increased power and reduced emissions.Moreover, the power stroke is not limited to internal combustion engines. In steam engines, for example, the principle is similar. Steam is generated in a boiler and then directed into a cylinder, pushing a piston down during the power stroke. This demonstrates that the idea of a power stroke transcends specific engine types and can be applied to various mechanical systems.Understanding the power stroke also aids in diagnosing engine problems. If an engine is misfiring or lacks power, it could be due to issues occurring during this critical phase. Mechanics may examine factors such as ignition timing, fuel quality, and piston condition to identify and rectify problems related to the power stroke.In conclusion, the power stroke is a key element in the operation of engines and other mechanical systems. It represents the moment when the potential energy of fuel is transformed into kinetic energy, enabling machines to function effectively. As technology advances, the importance of optimizing the power stroke continues to grow, driving innovations that enhance performance and efficiency in various applications.

‘动力冲程’这一概念在理解各种机械系统，特别是发动机时至关重要。‘动力冲程’指的是发动机循环中燃料燃烧发生的阶段，这一过程导致压力显著增加，从而推动活塞向下移动。这一动作对于将储存在燃料中的化学能转化为机械能至关重要，最终为车辆和机械提供动力。在典型的四冲程发动机中，有四个不同的阶段：进气、压缩、动力和排气。‘动力冲程’是第三个阶段，紧随其后的是压缩冲程。在压缩冲程中，空气-燃料混合物被压缩，温度和压力升高。当活塞到达气缸顶部时，火花塞点燃混合物，导致爆炸性反应。这次爆炸迫使活塞向下运动，形成‘动力冲程’。‘动力冲程’的效率对发动机的整体性能至关重要。工程师们往往专注于优化这一阶段，以确保最大功率输出，同时最小化燃料消耗。涡轮增压和直接喷油等创新技术已被实施，以增强‘动力冲程’的有效性。这些技术允许更好的空气-燃料混合和更完全的燃烧，从而提高功率并减少排放。此外，‘动力冲程’不仅限于内燃机。在蒸汽机中，例如，原理是相似的。蒸汽在锅炉中产生，然后导入气缸，在‘动力冲程’期间推动活塞向下。这表明‘动力冲程’的概念超越了特定的发动机类型，可以应用于各种机械系统。理解‘动力冲程’还有助于诊断发动机问题。如果发动机失火或缺乏动力，可能是由于这一关键阶段出现的问题。机械师可能会检查点火时机、燃料质量和活塞状况等因素，以识别和纠正与‘动力冲程’相关的问题。总之，‘动力冲程’是发动机和其他机械系统运行的关键要素。它代表着燃料的潜在能量转化为动能的时刻，使机器能够有效运作。随着技术的进步，优化‘动力冲程’的重要性继续增长，推动各类应用中的性能和效率提升的创新。