Performance and Exhaust Emissions of a Diesel Engine Equipped with Dual Injector System
| Autor: | Horibe, Naoto, Yagi, Masato, Kuwabara, Hiroki, Kawanabe, Hiroshi, Ishiyama, Takuji |
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| Jazyk: | japonština |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | 自動車技術会論文集. 48(2):219-224 |
| ISSN: | 0287-8321 |
| Popis: | To examine the feasibility of performance improvement by highly flexible fuel injection, a series of experiments were performed using a single-cylinder diesel engine with a dual injector system which includes two sets of common-rail injection systems. This system enables variable injection rate for each injection pulse and a wide-range dwell between injection pulses, i.e. even negative injection dwell can be performed. Experiments with multi-stage injection were conducted with various injection pressures, injection timings, and injection quantities. The results show that switching injector for pilot and main injections reduces smoke emission, and a higher pilot injection pressure increases CO emission without a reduction of smoke emission, while a higher main injection pressure reduces smoke emission with no increase in CO emission. Split-main injection with zero injection dwell increases thermal efficiency under high injection pressure condition. However, negative injection dwell markedly increases smoke emission owing to the spray-to-spray interaction. 噴射率および噴射パターンの設定自由度を高めることによる性能向上の可能性を探るため，単気筒試験機関に独立した二つのコモンレール燃料噴射システムを搭載して実験を行った．その結果に基づいて，多段噴射の各段の噴射圧力・時期，噴射量配分と熱発生率，性能・排気特性との関係について考察した． 2016年5月27日 自動車技術会春季学術講演会において発表. |
| Databáze: | OpenAIRE |
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