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- Title
Analysis of EGR Coupled Less Heat Rejection Model of Diesel Engine with Blends of Jatropha Biodiesel, Diesel and Diethyl Ether: An Experimental Approach.
- Authors
Krishna, K. V.; Sastry, G. R. K.; Krishna, M. V. S. M.
- Abstract
The experimental investigation on a less heat rejection model (LHRM) of the diesel engine was done with the objective to improve the performance and emission characteristics. The LHRM has a bond coat of NiCrAl interposed between the thermal barrier ceramic coated cylinder head and liner of the engine. The model is coupled with exhaust gas recirculation (EGR) system at a constant rate of 10 vol.%. The test fuels are neat diesel for the non-coated engine (NCE) and blends with different ratios of diesel- Jatropha biodiesel, keeping a constant ratio of additive diethyl ether (DEE) for the LHRM. The load was varied from 0 to 100 % and injection timing (IT) from 29° to 34° BTDC. The performance parameters of both engines improved significantly with the advancement of the injection timing. The NOx emissions reduced with no effect on BSEC, BTE and smoke levels with 10 % EGR rate. The optimum blend and IT for LHRM are D20JB60A20 by vol. (20 % of diesel + 60 % of Jatropha biodiesel + 20 % of additive DEE) and 32° BTDC as the maximum enhancement of about 6 to 7 % in peak BTE with a reduction in BSEC by 9.5 %, EGT by 18 %, VE by 2 to 3 %, smoke level by 44.5 % and NOx emissions by 14.2 % were found compared to NCE with diesel at normal operating conditions. At advanced injection timings with a higher load, in comparison to NCE, LHRM showed significant improvement in all of the investigated parameters.
- Subjects
DIESEL motor exhaust gas; DIESEL motors; ETHER (Anesthetic)
- Publication
International Journal of Automotive & Mechanical Engineering, 2018, Vol 15, Issue 1, p5097
- ISSN
2229-8649
- Publication type
Article
- DOI
10.15282/ijame.15.1.2018.15.0394