As the name suggests, gas-fired generator set is a gas-fired generator set, which is divided into internal-combustion generator set and gas turbine generator set. They all use gas as fuel.

燃气发电机组一般包括：发动机、发电机、控制器这几个部分组成，还有可选用装置稳压过滤装置、气液分离装置等，发动机与发电机同轴连接，并置于整机底盘上，再将消声器和调速器连接在发动机上。

The gas-fired generator set generally consists of engine, generator and controller, as well as optional devices, such as pressure stabilizing filter device and gas-liquid separation device. The engine is coaxially connected with the generator and placed on the chassis of the whole machine, and then the muffler and governor are connected to the engine.

由燃气源通入发动机的燃气通道，连接在发动机上带拉绳的反冲起动器以及连接在发电机输出端的电压调节器，其中燃气源内置放的可燃气体是天然气或石油液化气或沼气。

The gas source is connected to the gas channel of the engine, the recoil starter with a pull rope on the engine and the voltage regulator connected to the output end of the generator. The combustible gas discharged in the gas source is natural gas or liquefied petroleum gas or biogas.

燃气发电机组的燃烧方式主要有以下几种：

The combustion modes of gas-fired generator set are mainly as follows:

1、燃气发电机组的富燃烧，所谓富燃烧就是燃料多，氧气相对说少一些，但是他的动力足，但由于在缸体内会燃烧不充分，会通过烟管排到外面来。优点是动力十足，燃料温度低，不足之处是一氧化碳排量多，燃料消耗高。

1. The rich combustion of gas-fired generator set means that there is more fuel and less oxygen, but it has enough power. However, it will not burn enough in the cylinder and will be discharged to the outside through the smoke pipe. The advantages are full power and low fuel temperature. The disadvantages are more carbon monoxide emissions and high fuel consumption.

2、燃气发电机组的稀薄燃烧，混合气体中的燃气含量低，燃气燃料与空气之比可达1：25以上的发动机。这种发动机不足就是排放残留过多的氧，损失了动力，但优点是缸体内燃料的燃烧是充分的，并且氮氧化物排放量降低了。

2. The lean combustion of gas generator sets, low gas content in the mixed gas, and the ratio of gas fuel to air can reach more than 1:25. The disadvantage of this kind of engine is that it emits too much residual oxygen and loses power, but the advantage is that the combustion of fuel in the cylinder is sufficient and the NOx emission is reduced.

3、燃气发电机组的燃烧方式按化学计量燃烧：指可燃混合气中理论上可完全燃烧的实际含有的燃气量与空气量之比，是表示可燃混合气中燃料量与空气量配合比例的一个参数。当量比大于1，表示可燃混合气中所含实际空气量少于所一定的理论空气量，即空气量不足，燃烧效率随燃油当量比增加而下降。

3. The combustion mode of gas generator set is stoichiometric combustion: it refers to the ratio of the actual amount of gas and air in the combustible gas mixture which can be completely burned in theory, and it is a parameter indicating the matching ratio of the amount of fuel and air in the combustible gas mixture. When the equivalence ratio is greater than 1, the actual air content in the combustible mixture is less than a certain theoretical air content, that is, the air volume is insufficient, and the combustion efficiency decreases with the increase of the fuel equivalence ratio.

反之，当量比小于1，则表示可燃混合气中所含实际空气量超过所一定的理论空气量，即空气量过剩。当量比实际上就是过量空气系数的倒数。这种燃烧氮氧化物的排量高，温度也很高，高的时候可达到700摄氏度。

On the contrary, if the equivalence ratio is less than 1, it means that the actual air content in the combustible mixture exceeds a certain theoretical air content, that is, excess air. Equivalence ratio is actually the reciprocal of excess air coefficient. This kind of NOx combustion has high displacement and high temperature, which can reach 700 ℃ when it is high.