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Total Diesel Emission Control Technology Using Ozone Injection and Plasma Desorption

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Abstract

An innovative total diesel emission control system for diesel particulate and NOx simultaneous reduction is proposed. In this system, the plasma reactor is located outside the emission exhaust pipe and activated gas induced from ozone activated by the plasma is injected into the exhaust pipe. On the other hand, the NOx reduction is achieved using oxygen-poor nonthermal plasma desorption. The concentration of oxygen can be changed either by controlling the incineration state of the engine or by injecting oxygen-poor gas. Experiments are carried out for the emission of small diesel engine generator and high performance is demonstrated. The effective or apparent required plasma energy can be decreased further using this system because of the periodic or intermittent application of the plasma. In the present study, the excellent reduction energy efficiencies of 6.6 g/kWh for PM and 16 g (NO2)/kWh for NOx are achieved.

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Acknowledgments

The authors greatly thank Mr. Hideaki Kuramochi (A student of Osaka Prefecture University) and Mr. Takenori Osanai (Oden Co., LTD) for their supports and discussions in this study. This work was partially supported by Grant-in-Aid for Scientific Research of the Japan Society for the Promotion of Science, Oden Co., LTD., and other several Japanese companies manufacturing diesel engines.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, 599-8531, Japan

    Masaaki Okubo & Tomoyuki Kuroki

  2. Denso Corporation, 1-1 Showa-cho, Kariya, Aichi, 448-8661, Japan

    Naoki Arita

  3. JST Innovation Plaza Osaka, Japan Science and Technology Agency, 3-1-10 Techno-Stage, Izumi, Osaka, 594-1144, Japan

    Keiichiro Yoshida

  4. Department of Electrical and Electronic Engineering, Musashi Institute of Technology, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan

    Toshiaki Yamamoto

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  1. Masaaki Okubo
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  2. Naoki Arita
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  4. Keiichiro Yoshida
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  5. Toshiaki Yamamoto
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Correspondence to Masaaki Okubo.

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Okubo, M., Arita, N., Kuroki, T. et al. Total Diesel Emission Control Technology Using Ozone Injection and Plasma Desorption. Plasma Chem Plasma Process 28, 173–187 (2008). https://doi.org/10.1007/s11090-008-9121-7

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  • DOI: https://doi.org/10.1007/s11090-008-9121-7

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