20507 DME圧縮点火機関に関する研究 : Saurer型燃焼室とPre噴射が諸機関性能に及ぼす影響(エネルギー・環境問題に対応するエンジン・燃料技術(2),OS.11 エネルギー・環境問題に対応するエンジン・燃料技術)

概要

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Compression ignition engines using dimethyl ether as an alternative fuel (DME C.I.engines) is necessary to promote mixing fuel and air. Therefore, we studied experimentally the effect that a combination of Pre-injection and Saurer type combustion chamber gives to engine performances. The result demonstrated that d/D:0.4(d:Outer diameter of combustion chamber, D:Bore) can realize both improvements of the thermal efficiency and the reduction of the harmful exhaust gas at the same time. In addition, DME C.I.engines, operated with conventional Toroidal piston and Pre-injection that changed injection pressure, is possible to maintain the same level thermal efficiency in high engine speed, and reduce NOx emissions.
一般社団法人日本機械学会の論文
2009-03-05