C211 車載高温燃料改質法によるガソリンSI機関の高圧縮比化の検討(水素の製造と利用,OS-3 バイオマス・新燃料・環境技術(4),一般講演,地球温暖化防止と動力エネルギー技術)

概要

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The high thermal efficiency is established by increasing the compression ratio while the engine is operated in SI engine. In order to suppress knocking, the octane number of the fuel is raised by partially cracking the hydrocarbon molecules. Concept that onboard fuel reforming system utilizing waste heat produced from engine is practically effective on the high thermal efficiency. In this study, the fuel reformer was tentatively constructed and the fuel component was measured with GC-MS. The primary reference fuel 90(PRF90) was used as the test fuel. It was found that the fuel was partially cracked into small size hydrocarbons such as ethylene and propene. This fuel was supplied to the test engine, which was a 4-cylinder, 2-litter, turbo gasoline engine and the compression ratio was modified to be 12. The thermal efficiency increased by approximately 4〜6%.
2008-06-18