① 不需要辅助燃料油及其供给设备

① Auxiliary fuel oil and its supply equipment are not required

② 燃料为一个系统，在控制方面比可烧两种燃料的发电机组简单

② The fuel is a system, which is simpler in control than a generator set that can burn two fuels

③ 发电机组价格较低

③ The price of generator set is low

双燃料沼气发电机组工作原理及优点：将“空气燃烧气体”的混合物在气缸内压缩，用点火燃料使其燃烧，通过活塞的往复运动得到动力，然后连接发电机发电。

Working principle and advantages of dual fuel biogas generator set: compress the mixture of "air combustion gas" in the cylinder, burn it with ignition fuel, obtain power through the reciprocating motion of the piston, and then connect the generator to generate electricity.

① 用液体燃料或气体燃料都可工作

① It can work with liquid fuel or gas fuel

② 对沼气的产量和甲烷浓度的变化能够适应

② It can adapt to the changes of biogas output and methane concentration

③ 如由用气体燃料转为用柴油燃料在停止工作，发电机组内不残留未燃烧的气体，因为饿耐腐蚀性好

③ In case of switching from gas fuel to diesel fuel and stopping working, there will be no unburned gas left in the generator set because of its good corrosion resistance

两种沼气发电机组缺点:工作受到供给的沼气的数量和质量的影响

Disadvantages of two kinds of biogas generating units: the work is affected by the quantity and quality of biogas supplied

① 用气体燃料工作时也需要液体辅助燃料

① Liquid auxiliary fuel is also required when working with gaseous fuel

② 需要液体燃料供给设备

② Liquid fuel supply equipment is required

③ 控制机构稍复杂

③ The control mechanism is slightly complex

④ 借个较单燃料式发电机组稍高

④ Borrow a slightly higher than the single fuel generator set