Experimental study of the influence of a pour point depressant additive on particle size distributions in diesel engine exhausts--颗粒学报PARTICUOLOGY

Liang, X., Wang, Y., Dong, L., Shu, G., & Liu, C. (2014). Experimental study of the influence of a pour point depressant additive on particle size distributions in diesel engine exhausts. Particuology, 13, 73–81. https://doi.org/10.1016/j.partic.2013.07.002

Xingyu Liang^*, Yuesen Wang, Lihui Dong, Gequn Shu, Changwen Liu

State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China

10.1016/j.partic.2013.07.002

Volume 13, April 2014, Pages 73-81

Received 31 July 2012, Revised 25 June 2013, Accepted 8 July 2013, Available online 9 September 2013.

E-mail: lxy@tju.edu.cn

Highlights

• Effects of speed, load, and PPD concentration on exhaust particulate matters were studied.

• PPD could change ignition delay and decrease engine output to below that of pure diesel.

• PPD combustion had a significant impact on particle emissions and size distributions.

• Adding PPD increased the amount of nucleation mode particles emitted.

Abstract

Many studies have been performed on diesel engine particulate matter emissions, but the influence of lubricants on emissions has only been considered a few times, and the effects of lubricant additives have yet to be investigated. We studied the influence of a pour point depressant additive (PPD) on particle emissions and particle size distributions from a four-cylinder turbocharged, inter-cooled engine with CF-4 15W-40 lubricant, using diesel or diesel containing the PPD. Changing the working conditions changed the number of particles emitted and the location of the peak particle size(s) emitted. The number of particles first increased and then decreased as the engine speed increased. Particle emissions were optimal at low engine speeds and high load, increasing with increasing engine speed.

Graphical abstract

Keywords

Diesel; PPD; Particulate matter; Particle emission; Distribution of particles

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