Effect of a New Wet Soot Absorber on Soot Removal of a Diesel Engine

Authors

1 Department of Mechanical Engineering, School of Engineering, Ferdowsi University of ‎Mashhad, P.O. Box No. 91775-1111, Mashhad, Iran‎

2 Department of Mechanical Engineering, Torbat-e-jam branch, Islamic Azad University, ‎Torbat-e-jam, Iran‎

3 Department of Mechanical Engineering, School of Engineering, Ferdowsi University of ‎Mashhad, P.O. Box No. 91775-1111, Mashhad, Iran

Abstract

In the following investigation, a submerged-type Wet Soot Absorber (WSA) is studied and its capability on reducing the soot emission level of a four cylinder, direct injection (DI) diesel engine is evaluated. The WSA can provide a large contact area between water and exhaust flow which increases the soot capturing probability. Hence, the system can be more compact and suitable for vehicle engines applications. The ECE-R49 standard test is followed to assess the effect of the WSA on the engine performance and soot emission. The experiments revealed that the best soot removal efficiency of 70% is attained in the full-load engine operating conditions due to the high momentum of exhaust gas flow entering to the chamber of the unit which can provide more flow penetration into the water. Also, further bubble break-up in high gas velocity results in a larger liquid-gas interface and contributes to better soot removal. The minor negative effects of utilizing the WSA on the brake specific fuel consumption (BSFC) is also compared with those of conventional DPFs and the aspects of WSA advantages are discussed.

Keywords

Scientia Iranica
Volume 21, Issue 3
Transactions on Mechanical Engineering (B)
June 2014
Pages 569-577

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