Title: Super clean diesel by usage of wide range, high boosted and cooled EGR system in single cylinder engine – Japanese national project: super clean diesel engine

Authors: Yuzo Aoyagi, Masahiro Misawa, Tomoaki Hirosawa, Hideaki Osada, Eiji Kunishima, Matsuo Odaka, Yuichi Goto

Addresses: New ACE Institute Co. Ltd, 2530 Karima, Tsukuba-shi, Ibaraki Pref. 305-0822, Japan. ' New ACE Institute Co. Ltd, 2530 Karima, Tsukuba-shi, Ibaraki Pref. 305-0822, Japan. ' New ACE Institute Co. Ltd, 2530 Karima, Tsukuba-shi, Ibaraki Pref. 305-0822, Japan. ' New ACE Institute Co. Ltd, 2530 Karima, Tsukuba-shi, Ibaraki Pref. 305-0822, Japan. ' Hino Motors Ltd, 3-1-1, Hino-dai, hino-shi, Tokyo 191-8660, Japan. ' National Traffic Safety and Environment Laboratory, 7-42-27, Jindaiji-higashi-machi, Chofu-city, 182-0012, Japan. ' National Traffic Safety and Environment Laboratory, 7-42-27, Jindaiji-higashi-machi, Chofu-city, 182-0012, Japan

Abstract: The heavy duty diesel engines have achieved status as prime movers for CO₂ emissions. However, in the future heavy duty diesel engines will be required to have lower NO_x and particulate matter (PM) emission levels than today. In this study high boost and lean diesel combustion has been attempted by a single cylinder engine in order to obtain a good engine performance and clean exhaust emission. The experiment has been done with intake air quantity up to five times of a naturally aspirated (NA) engine and 200MPa injection pressure. The adopted pressure booster is an external supercharger; and this experimental system can control the intake air temperature and also produce a high exhaust gas recirculation (EGR) rate in a wide speed and high load range.

Keywords: common rail injector; heavy duty diesel engines; EGR; exhaust gas recirculation; engine combustion; high boost; high pressure injection; super clean diesel; NO_x; nitrogen oxide; particulate matter; power unit; smoke; Japan; vehicle emissions; external supercharger.

DOI: 10.1504/IJVD.2006.009661

International Journal of Vehicle Design, 2006 Vol.41 No.1/2/3/4, pp.49 - 66

Published online: 04 May 2006 *

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