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Investigation on performance, emission and combustion characteristics of variable compression engine fuelled with diesel, waste plastics oil blends

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Abstract

Presently plastics are major contributors in solid waste which has higher thermal energy. Waste plastics can be converted into alternate fuel by pyrolysis which can replace diesel in compression ignition engines. The present study deals with the performance, combustion and emission characteristics of variable compression ratio engine fuelled with plastic oil, diesel and its blends with diethyl ether as an additive. Three blends 2.5, 7.5 and 12.5 % were tested in variable compression ratio engine. Waste plastic oil blend, pure plastic oil and diesel were considered for comparison. This study reveals that brake thermal efficiency increases for all the blends when compression ratio increases from 12 to 20. The specific fuel consumption of the blends and plastic oil were higher than the diesel. But the brake thermal efficiency for all the blends, plastic oil was comparatively lower than that of diesel. The regulated emissions of the variable compression ratio engine under varying loads and compression ratio for different blends were discussed.

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Abbreviations

BTHE:

Brake thermal efficiency (%)

CO:

Carbon monoxide (% vol.)

CO2 :

Carbon dioxide (% vol.)

HC:

Hydrocarbons (ppm)

NOx:

Oxides of nitrogen (ppm)

SFC:

Specific fuel consumption (kg/kWh)

aTDC:

After top dead centre

bTDC:

Before top dead centre

ACP:

Averaged cylinder pressure

ASTM:

American society for testing and materials

CA:

Crank angle

CLD:

Chemi luminescence detector

CR:

Compression ratio

DEE:

Di ethyl ether

FID:

Flame ionization detector

NDIR:

Nondispersive infrared sensor

PPM:

Parts per million

RHR:

Rate of heat release

VCR:

Variable compression ratio

Vol.:

Volume

WPO:

Waste plastic oil

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Government College of Engineering, Bargur, 635104, Tamilnadu, India

    S. Ananthakumar & P. Thirumal

  2. Department of Mechanical Engineering, Alagappa Chettiar College of Engineering and Technology, Karaikudi, 630003, Tamilnadu, India

    S. Jayabal

Authors
  1. S. Ananthakumar
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  2. S. Jayabal
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  3. P. Thirumal
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Corresponding author

Correspondence to S. Ananthakumar.

Additional information

Technical Editor: Luis Fernando Figueira da Silva.

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Ananthakumar, S., Jayabal, S. & Thirumal, P. Investigation on performance, emission and combustion characteristics of variable compression engine fuelled with diesel, waste plastics oil blends. J Braz. Soc. Mech. Sci. Eng. 39, 19–28 (2017). https://doi.org/10.1007/s40430-016-0518-6

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  • DOI: https://doi.org/10.1007/s40430-016-0518-6

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