Heat release rate and performance simulation of DME fuelled diesel engine using oxygenate correction factor and load correction factor in double Wiebe function

S. Loganathan, M. Leenus Jesu Martin, B. Nagalingam and L. Prabhu

Energy, 2018, vol. 150, issue C, 77-91

Abstract: A computer simulation scheme with a rapid thermodynamic model is developed to predict the diesel engine HRR (heat release rate) and performance characteristics with DME as a fuel. The bmeps (MPa) are simulated as 0.5 (optimum power output) and 0.3, 0.4, 0.6 (other power outputs) with diesel and with DME in four steps sequentially. Initially, HRR is predicted by modifying four double Wiebe function parameters; the equations of heat release and combustion duration of diffusion phase and the efficiency factors of premixed and diffusion phase as 2.25 and 3.25 respectively (obtained by qualitative and approximate fitting by trial and error method). Obviously 99% combustion efficiency assumption with efficiency factor as 6.9 is excluded. Secondly, all Wiebe parameters are computed by using LCF (load correction factor which is the ratio between mass flow rates of diesel of optimum and other power output) alone and by using LCF and OCF (oxygenate correction factor which is the ratio between mass flow rates of DME and diesel of identical power output) in other steps. Premixed and diffusion phase peaks (J/degree) with DME are 13.73 and 31.47 (0.3 MPa); 23.18 and 47.25 (0.6 MPa). Performance predicted with 1.2% accuracy is validated by SAE and USA Army literature.

Keywords: Oxygenate correction factor; Load correction factor; Double Wiebe function; Heat release rate; Performance simulation; Dimethyl ether; Diesel engine (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544218303463
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:150:y:2018:i:c:p:77-91

DOI: 10.1016/j.energy.2018.02.112

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().