F/A：空燃比
“燃料与空气的混合比例”在专业领域常被简称为F/A（Fuel to Air Ratio），这一缩写形式便于快速记录和应用。该术语在美国国家航空航天局（NASA）等航空航天机构的技术文档中尤为常见，其中文对应概念为“空燃比”，特指发动机运行中燃料与空气的质量比值，是衡量燃烧效率的关键参数。
Fuel to Air ratio的英文发音
例句
- Here we put our stress on analyzing the evolving regulation of the in-cylinder flow field, the spatial profile of fuel spray, the in-cylinder fuel to air equivalent ratio, temperature distribution feature and the emission formulation conditions.
- 着重分析了气缸内流场的演变规律、喷雾的空间分布情况、气缸内的燃空当量比和温度的分布特点以及排放物的形成情况。
- Based on high-effective heat-transfer characteristics of honeycomb ceramic regenerator and defining ratio of fuel to air and split ratio and assistant air ratio, conditions keeping the generator steady and rules generating high temperature air with propane as the fuel are researched.
- 运用蜂窝陶瓷蓄热体高效换热规律，引入燃空比、分流比和辅助空气添加比，研究燃用丙烷时发生器稳定运行条件和高温空气生成规律。
- Considering the air fuel ratio characteristics of gasoline engine which is difficulty to accurately control under transient condition, a neural network composite air fuel ratio control strategy was advocated in this paper.
- 针对车用汽油机过渡工况空燃比(F/A)难于精确控制的特点，提出了一种空燃比(F/A)的神经网络复合控制策略。
- By using two-stage fuel injection and variable induction technology to form a quasi-homogeneous lean mixture, the combustion process is improved with lean burn air fuel ratio limit extended and NOx emission lowered.
- 应用二次喷油及可变进气技术，形成准均质稀混合气，改善了燃烧过程，扩大了发动机稀燃极限，降低了NOx排放量。
- Idle control fuel injection quantity by the fuel injection control system to match the amount of air in accordance with the principle of change, in order to achieve the target air-fuel ratio.
- 怠速时喷油量的控制由燃油喷射控制系统根据与空气量相匹配的原则进行增减，以达到目标空燃比(F/A)。
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