B111 都市ガス・バイオガス混焼エンジンの運転制御システム(OS3 省エネルギー・コジェネ技術),動力エネルギーシステム部門20周年,次の20年への新展開)

概要

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In this paper, a engine control system was built up and confirmed that enables combustion of arbitrary mixture of biogas and city gas 13A with high generating efficiency and low NOx. Biogas is stoicheiometric mixing ratio, then city gas compensates. Mixture of city gas 13A and biogas varies in stoicheiometric mixing ratio. Existing engine system can only control premixture fuel flow, so that it can't tackle variety amount of heat generation. Therefore other throttle to control fuel flow was added. Wobbe Index was used as a fuel index. Using Wobbe Index revealed relationship that targeted oxygen concentration in emission is conducted from generating efficiency and NOx. On the basis of these experiments, we have developed feed back control systems from oxygen concentration in emission. In a practice run, this control system could deal with variation of stoicheiometric mixing ratio or load.
一般社団法人日本機械学会の論文
2010-06-20