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タイトル: | Effects of Fuel-injection Parameters on Performance and Exhaust Emissions in a Diesel Engine Equipped with Dual-injector System |
著者: | Horibe, Naoto https://orcid.org/0000-0002-7126-2986 (unconfirmed) Egoshi, Kenta Hirayama, Kazuki Imanishi, Ryota Kuwabara, Hiroki Kawanabe, Hiroshi https://orcid.org/0000-0002-9525-4841 (unconfirmed) Ishiyama, Takuji |
著者名の別形: | 堀部, 直人 江越, 賢太 平山, 一輝 今西, 良太 桑原, 洋樹 川那辺, 洋 石山, 拓二 |
キーワード: | Diesel Dual injector Injection rate shaping |
発行日: | 2017 |
出版者: | Japan Society of Mechanical Engineers |
誌名: | The international symposium on diagnostics and modeling of combustion in internal combustion engines |
巻: | 2017.9 |
論文番号: | B203 |
抄録: | To examine the feasibility of improving performance through highly flexible fuel injection, a series of experiments were performed using a single-cylinder diesel engine with a dual injector system, which included two sets of common-rail injection systems. The injectors were installed around the center of the cylinder to simulate flexible injection with a single nozzle configuration. This system enabled different injection rates in each injection pulse and a wide dwell range between injection pulses, i.e., even a negative injection dwell could be performed. Experiments with multi-stage injection were conducted using a single-cylinder metal engine, and the behaviors of the sprays and flames were observed in an optically accessible single-cylinder engine with an extended bottom-view piston. Based on a double pilot injection strategy, the effects of the injection pressures, injection timings, and injection quantities of split injection were investigated. The results showed that the dual injector system tended to increase smoke emissions because of a lack of symmetry in the combustion system. The heat release rates were hardly affected by switching from one injector to another for the main injection, whereas the smoke emissions were markedly reduced. A higher main injection pressure with lower pilot injection pressures reduced the smoke emissions with no increase in the CO emissions. A split-main injection with zero injection dwell increased the thermal efficiency under high injection-pressure conditions. A negative injection dwell markedly increased the smoke emissions. |
記述: | [COMODIA 2017 = The Ninth International Conference on Modeling and Diagnostics for Advanced (第9回 先進エンジンシステムのモデリングと診断に関する国際会議)] 2017/07/25 - 2017/07/28, The Japan Society of Mechanical Engineers(エンジンシステム部門) 主催 |
著作権等: | © 2017 The Japan Society of Mechanical Engineers この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/237653 |
DOI(出版社版): | 10.1299/jmsesdm.2017.9.B203 |
関連リンク: | https://www.jsme.or.jp/event/2017-24168/ |
出現コレクション: | 学術雑誌掲載論文等 |
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