The Method of Controlling Biogas Input in Biogas-Diesel Dual-Fuel Engine

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  • WAKABAYASHI Sohei
    Graduate School of Agriculture, Hokkaido University / Present address : Sakai Plant, Kubota Corporation
  • JABER Nizar
    Graduate School of Agriculture, Hokkaido University
  • NOGUCHI Noboru
    Graduate School of Agriculture, Hokkaido University

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Other Title
  • バイオガス・軽油二燃料トラクタ機関の制御法に関する研究
  • バイオガス ケイユ ニネンリョウ トラクタ キカン ノ セイギョホウ ニ カンスル ケンキュウ

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Abstract

Biogas made from organic waste, has been used for various applications, including engines. Feeding biogas into the intake manifold of compression ignition engine reduces diesel consumption from one side but on the other side, it increases CO emission and BSHC (Break Specific Heat Consumption) during low loads. This research studies the characteristics of dual-fuel tractor engines using different biogas control methods. Biogas feeding was controlled using 3D-look-up tables optimized for three different objectives. Engine performances as well as emissions were measured and a field test simulation was made.<BR>The dual-fuel engines have almost same power and torque characteristics as diesel engines. Emission tests results showed that the optimized biogas supply maps were attained the research objectives. The best BSHC curve gave the lowest energy consumption, and diesel consumption was minimized by best reduction map. Field simulation test estimated possible results of actual operations powered by the dual-fuel tractor.

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