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http://dx.doi.org/10.3795/KSME-B.2011.35.2.121

Study on the Optimal Injection Condition for HC-LNT Catalyst System for Diesel Engines with a Gasoline PFI Type Injector  

Oh, Jung-Mo (Dept. of Mechanical Engineering, Hanyang Univ.)
Mun, Woong-Ki (Dept. of Mechanical Engineering, Hanyang Univ.)
Kim, Ki-Bum (Dept. of Mechanical Engineering, Hanyang Univ.)
Lee, Jin-Ha (Hyundai-Motor Company,)
Lee, Ki-Hyung (Dept. of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.2, 2011 , pp. 121-127 More about this Journal
Abstract
NOx (Nitrogen Oxide) reduction system periodically needs a rich or stoichiometric operating condition to reduce NOx. A new method that optimizes the control of external HC injection into a diesel exhaust pipe for HC-type LNT (Lean NOx Trap) catalyst system has been developed. In this paper, these catalysts are called HC-LNT catalysts. The concentration and amount of HC can be controlled by controlling the external injection. In this study, we investigated the relationship between the spray behavior of hydrocarbons injected into the transparent exhaust pipe and NOx reduction characteristics. From the results of this experiment, we obtained useful information about the optimum injection and position of HC injector to the exhaust pipe. Further, we obtained useful information about the optimal injection condition for an HC-LNT catalyst system with a gasoline PFI (port fuel injection) typeinjector.
Keywords
Diesel engine; LNT; Spray behavior; RMS image(Root Mean Square); PFI(Port fuel injection);
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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