ignition timing

简明释义

点火定时

英英释义

例句

1.He used a timing light to check the ignition timing on his car.

他使用点火测试灯检查了他汽车的点火时机。

2.Proper ignition timing ensures smooth engine operation.

正确的点火时机确保发动机平稳运行。

3.If the ignition timing is off, the engine may backfire.

如果点火时机不正确，发动机可能会回火。

4.Adjusting the ignition timing can lead to better throttle response.

调整点火时机可以改善油门响应。

5.The mechanic adjusted the ignition timing to improve fuel efficiency.

技师调整了点火时机以提高燃油效率。

作文

The performance of an internal combustion engine is heavily influenced by various factors, one of the most critical being the ignition timing. This term refers to the precise moment when the spark plug ignites the air-fuel mixture in the engine's cylinder. If the ignition timing is set correctly, the engine operates efficiently, producing optimal power and fuel economy. Conversely, incorrect ignition timing can lead to a host of problems, including reduced performance, increased emissions, and even engine damage.Understanding ignition timing is essential for anyone interested in automotive mechanics or performance tuning. The timing needs to be adjusted based on various conditions such as engine load, speed, and temperature. For instance, during acceleration, the ignition timing may need to advance to ensure that the combustion process occurs at the right moment for maximum power output. On the other hand, during cruising, the timing may need to be retarded to improve fuel efficiency and reduce emissions.In modern vehicles, the ignition timing is often controlled by the engine control unit (ECU), which uses sensors to monitor various parameters and adjust the timing accordingly. This system allows for real-time adjustments that can optimize performance under different driving conditions. However, in older vehicles, mechanics often had to manually set the ignition timing, making it crucial for them to understand the principles behind it.One common issue related to ignition timing is 'knocking' or 'pinging,' which occurs when the air-fuel mixture detonates prematurely. This can cause significant damage to the engine over time if not addressed. Therefore, maintaining the correct ignition timing is vital for the longevity of the engine.Moreover, enthusiasts often experiment with ignition timing settings to achieve better performance. By advancing the timing beyond the manufacturer’s specifications, they may gain additional horsepower, but this comes with risks. If the timing is too advanced, it can lead to knocking, while if it is too retarded, the engine may run inefficiently. Thus, finding the perfect balance is key, and it often requires extensive testing and tuning.In conclusion, ignition timing plays a pivotal role in the functioning of internal combustion engines. A thorough understanding of how it affects engine performance can help drivers and mechanics alike in optimizing their vehicles. Whether through manual adjustments or modern ECU controls, ensuring the correct ignition timing is essential for achieving the best performance and efficiency from any engine. Ignoring this critical aspect can lead to poor performance and costly repairs, making it a fundamental concept in the world of automotive engineering.

内燃机的性能受到多种因素的影响，其中最关键的因素之一就是点火时机。这个术语指的是火花塞在发动机气缸中点燃空气-燃料混合物的精确时刻。如果点火时机设置正确，发动机将高效运行，产生最佳的动力和燃油经济性。相反，不正确的点火时机可能导致一系列问题，包括性能下降、排放增加，甚至发动机损坏。理解点火时机对于任何对汽车机械或性能调校感兴趣的人来说都是至关重要的。根据发动机负荷、速度和温度等各种条件，点火时机需要进行调整。例如，在加速过程中，点火时机可能需要提前，以确保燃烧过程在最大功率输出的正确时刻发生。另一方面，在巡航时，点火时机可能需要延迟，以提高燃油效率并减少排放。在现代车辆中，点火时机通常由发动机控制单元（ECU）控制，该单元使用传感器监测各种参数并相应地调整时机。该系统允许实时调整，可以在不同驾驶条件下优化性能。然而，在较旧的车辆中，机械师通常需要手动设置点火时机，这使得他们必须理解其背后的原理。与点火时机相关的一个常见问题是“敲击”或“嗡嗡声”，这发生在空气-燃料混合物过早点燃时。如果不加以处理，这可能会随着时间的推移对发动机造成重大损害。因此，保持正确的点火时机对发动机的寿命至关重要。此外，爱好者们经常尝试调整点火时机设置，以获得更好的性能。通过将时机提前到制造商的规格之外，他们可能会获得额外的马力，但这也伴随着风险。如果时机过于提前，可能会导致敲击，而如果过于延迟，发动机可能运行不高效。因此，找到完美的平衡是关键，通常需要广泛的测试和调校。总之，点火时机在内燃机的功能中发挥着关键作用。彻底理解它如何影响发动机性能可以帮助驾驶员和机械师优化他们的车辆。无论是通过手动调整还是现代ECU控制，确保正确的点火时机对于从任何发动机中获得最佳性能和效率至关重要。忽视这一关键方面可能导致性能不佳和昂贵的维修，使其成为汽车工程领域的基本概念。