Effect of combustion chamber geometry on performance, combustion, and emission of direct injection diesel engine with ethanol-diesel blend | Zendy

Gnanamoorthi Venkadesan | Zendy; Navin Marudhan | Zendy; Devaradjane Gobalakichenin | Zendy

Open Access

Effect of combustion chamber geometry on performance, combustion, and emission of direct injection diesel engine with ethanol-diesel blend

Author(s) -

Gnanamoorthi Venkadesan,

Navin Marudhan,

Devaradjane Gobalakichenin

Publication year - 2016

Publication title -

thermal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.339

H-Index - 43

eISSN - 2334-7163

pISSN - 0354-9836

DOI - 10.2298/tsci16s4937g

Subject(s) - combustion chamber , combustion , diesel engine , diesel fuel , materials science , homogeneous charge compression ignition , cylinder , piston (optics) , compression ratio , diesel cycle , exhaust gas recirculation , thermal efficiency , four stroke engine , nox , mechanics , automotive engineering , physics , chemistry , thermodynamics , mechanical engineering , optics , engineering , wavefront , organic chemistry

In the present paper, the effect of combustion chamber geometry on performance, combustion and emissions of ethanol-diesel blend operated in direct injection Diesel engine is discussed. The main air motions are generated in the cylinder by the intake - induced swirl, the piston motion, and its geometry. The piston bowl is modified from traditional hemispherical combustion chamber to the toroidal (re-en-trant) combustion chamber and operated with Neat diesel and 40% ethanol diesel blend to improve better evaporation and mixing during the compression stroke on a single cylinder Diesel engine. It is found that the toroidal combustion chamber creates better turbulence, squish, and swirl at high compression ratios of 19.5:1 compared to that of traditional one. Further, the combustion is significantly enhanced due to increased swirl. It is concluded that the brake thermal efficiency for toroidal combustion chamber is 33% and the peak pressure in the cylinder as well as peak heat release rate is also increased. Further, it is also concluded that 60% of CO emission, 20% of HC emission, 40% of NOx emission, and 90% in smoke emissions were reduced for toroidal combustion chamber, compared to that of hemispherical combustion chamber

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