unit injector

简明释义

组合式喷射器

英英释义

例句

1.The diesel engine's efficiency largely depends on the quality of the unit injector 单元喷油器 used.

柴油发动机的效率在很大程度上取决于所使用的 unit injector 单元喷油器 的质量。

2.The mechanic explained that the unit injector 单元喷油器 is crucial for optimizing fuel delivery in diesel engines.

机械师解释说，unit injector 单元喷油器 对于优化柴油发动机的燃油供应至关重要。

3.Replacing a faulty unit injector 单元喷油器 can significantly improve engine performance.

更换故障的 unit injector 单元喷油器 可以显著提升发动机性能。

4.During the inspection, we noticed that the unit injector 单元喷油器 was leaking fuel.

在检查过程中，我们注意到 unit injector 单元喷油器 漏油。

5.When troubleshooting the engine, he found that the unit injector 单元喷油器 was clogged and needed cleaning.

在排查发动机故障时，他发现 unit injector 单元喷油器 被堵塞了，需要清洗。

作文

The term unit injector refers to a specific type of fuel injection system commonly used in diesel engines. Unlike traditional fuel injectors that rely on external pumps to deliver fuel, the unit injector integrates the fuel pump and injector into a single unit. This design offers several advantages, including improved efficiency and performance. In this essay, we will explore the workings of the unit injector, its benefits, and the reasons for its widespread adoption in modern diesel engines.To understand how the unit injector functions, it is essential to first grasp the basic principles of fuel injection in diesel engines. Diesel engines operate on the principle of compression ignition, where air is compressed to a high temperature before fuel is injected into the combustion chamber. The unit injector plays a crucial role in this process by precisely timing and atomizing the fuel for optimal combustion. Each unit injector is activated by the engine’s control unit, which determines the exact moment and quantity of fuel to be injected based on various parameters such as engine speed and load.One of the primary benefits of the unit injector system is its compact design. By combining the fuel pump and injector into a single unit, manufacturers can save space and reduce the overall weight of the engine. This is particularly important in applications where weight and size are critical factors, such as in heavy-duty trucks and machinery. Furthermore, the integration of components leads to fewer potential failure points, enhancing the reliability of the fuel delivery system.Another advantage of the unit injector is its ability to achieve higher injection pressures compared to traditional systems. Higher injection pressures result in better atomization of the fuel, leading to more efficient combustion. This improved combustion process not only enhances engine performance but also reduces emissions, making diesel engines equipped with unit injectors more environmentally friendly.Moreover, the unit injector system allows for precise control over the fuel injection timing and duration. This level of control is vital for optimizing engine performance across various operating conditions. For instance, during acceleration, the engine control unit can adjust the injection timing to provide more power, while during cruising conditions, it can optimize fuel economy by reducing the amount of fuel injected. This adaptability contributes to the overall efficiency of the engine, resulting in better fuel economy and lower operating costs.The widespread adoption of the unit injector technology in modern diesel engines can also be attributed to advancements in electronic control systems. These systems have made it possible to monitor and adjust the fuel injection process in real-time, further enhancing the performance and efficiency of the engine. As regulations regarding emissions become stricter, the unit injector provides a viable solution for manufacturers striving to meet these standards.In conclusion, the unit injector is a pivotal component in modern diesel engines, offering numerous advantages over traditional fuel injection systems. Its compact design, ability to achieve higher injection pressures, and precise control over fuel delivery contribute to improved engine performance, efficiency, and reduced emissions. As the automotive industry continues to evolve, the unit injector will likely play an increasingly important role in the development of cleaner and more efficient diesel engines. Understanding the significance of the unit injector is essential for anyone interested in the mechanics of diesel engines and the future of automotive technology.

“单元喷油器”是指一种常用于柴油发动机的燃油喷射系统。与依赖外部泵输送燃油的传统喷油器不同，“单元喷油器”将燃油泵和喷油器集成到一个单元中。这种设计具有多个优点，包括提高效率和性能。在本文中，我们将探讨“单元喷油器”的工作原理、其优势以及其在现代柴油发动机中广泛采用的原因。要理解“单元喷油器”的功能，首先需要掌握柴油发动机燃油喷射的基本原理。柴油发动机基于压缩点火的原理运作，即在注入燃油之前，将空气压缩到高温。“单元喷油器”在此过程中发挥了至关重要的作用，通过精确地定时和雾化燃油来实现最佳燃烧。每个“单元喷油器”由发动机控制单元激活，该控制单元根据发动机转速和负荷等各种参数确定注入燃油的准确时机和数量。“单元喷油器”系统的主要优点之一是其紧凑的设计。通过将燃油泵和喷油器合并为一个单元，制造商可以节省空间并减少发动机的整体重量。这在重型卡车和机械等对重量和尺寸要求严格的应用中尤为重要。此外，组件的集成导致潜在故障点减少，从而增强了燃油供给系统的可靠性。“单元喷油器”的另一个优点是其能够实现比传统系统更高的喷射压力。更高的喷射压力导致燃油雾化效果更好，从而实现更高效的燃烧。这一改进的燃烧过程不仅提升了发动机性能，还减少了排放，使配备“单元喷油器”的柴油发动机更加环保。此外，“单元喷油器”系统允许对燃油喷射的时机和持续时间进行精确控制。这种控制水平对于在各种操作条件下优化发动机性能至关重要。例如，在加速过程中，发动机控制单元可以调整喷射时机以提供更多动力，而在巡航条件下，它可以通过减少喷入的燃油量来优化燃油经济性。这种适应性有助于提高发动机的整体效率，从而实现更好的燃油经济性和更低的运营成本。“单元喷油器”技术在现代柴油发动机中广泛采用的原因还归功于电子控制系统的进步。这些系统使得实时监控和调整燃油喷射过程成为可能，进一步增强了发动机的性能和效率。随着排放法规变得越来越严格，“单元喷油器”提供了一种可行的解决方案，帮助制造商努力达到这些标准。总之，“单元喷油器”是现代柴油发动机中的关键组件，相较于传统燃油喷射系统提供了众多优点。其紧凑的设计、实现更高喷射压力的能力以及对燃油供给的精确控制，均有助于提高发动机性能、效率和减少排放。随着汽车工业的不断发展，“单元喷油器”在开发更清洁、更高效的柴油发动机方面将发挥越来越重要的作用。理解“单元喷油器”的重要性对于任何对柴油发动机的机械原理和汽车技术未来感兴趣的人来说都是必不可少的。