Basic Study on an Excess Air Ratio Controlling System Improving Chemi-ionization

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In this paper, an excess air ratio controlling system improving chemi-ionization is proposed. The combustion chamber is constructed by a cylindrical tube, it is a negative electrode, and a stickwise positive electrode is located in the center of the tube. The relations between the current drawn from a flame and its combustion con-ditions are investigated. Based on experimental results, using a micro-computer, an fuel flow rate controlling system is produced. The following results are obtained. 1) The current drawn from the flame at the constant mixture ratio and applyin voltage is widely proportional to the air flow rate. 2) The seasonal temperature change in Tokyo has little influence on the current. 3) The humidity of a gas mixture decreases the current. However, the change o the current for the atmospheric humidity in Tokyo corresponds to a±4% change in the excess air ratio around unity. 4) In this system, an excess air ratio can be controlled in a wide range of gas mixture flow rates.
一般社団法人日本エネルギー学会の論文