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Research Papers: Gas Turbines: Combustion, Fuels, and Emissions

A Study of Combustion Inefficiency in Diesel Low Temperature Combustion and Gasoline–Diesel RCCI Via Detailed Emission Measurement

[+] Author and Article Information
Shouvik Dev

Department of Mechanical,
Automotive and Materials Engineering,
University of Windsor,
401 Sunset Avenue,
Windsor, ON N9B 3P4, Canada
e-mail: devs@uwindsor.ca

Prasad Divekar

Department of Mechanical,
Automotive and Materials Engineering,
University of Windsor,
401 Sunset Avenue,
Windsor, ON N9B 3P4, Canada
e-mail: divekar@uwindsor.ca

Kelvin Xie

Department of Mechanical,
Automotive and Materials Engineering,
University of Windsor,
401 Sunset Avenue,
Windsor, ON N9B 3P4, Canada
e-mail: xiek@uwindsor.ca

Xiaoye Han

Department of Mechanical,
Automotive and Materials Engineering,
University of Windsor,
401 Sunset Avenue,
Windsor, ON N9B 3P4, Canada
e-mail: hanz@uwindsor.ca

Xiang Chen

Department of Electrical and
Computing Engineering,
University of Windsor,
401 Sunset Avenue,
Windsor, ON N9B 3P4, Canada
e-mail: xchen@uwindsor.ca

Ming Zheng

Department of Mechanical,
Automotive and Materials Engineering,
University of Windsor,
401 Sunset Avenue,
Windsor, ON N9B 3P4, Canada
e-mail: mzheng@uwindsor.ca

1Corresponding author.

Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received March 9, 2015; final manuscript received April 29, 2015; published online June 2, 2015. Editor: David Wisler.

J. Eng. Gas Turbines Power 137(12), 121501 (Jun 02, 2015) (7 pages) Paper No: GTP-15-1087; doi: 10.1115/1.4030521 History: Received March 09, 2015

Reduction of engine-out NOx emissions to ultra-low levels is facilitated by enabling low temperature combustion (LTC) strategies. However, there is a significant energy penalty in terms of combustion efficiency as evidenced by the high levels of hydrocarbon (HC), carbon monoxide (CO), and hydrogen emissions. In this work, the net fuel energy lost as a result of incomplete combustion in two different LTC regimes is studied—partially premixed compression ignition (PPCI) using in-cylinder injection of diesel fuel and reactivity controlled compression ignition (RCCI) of port injected gasoline and direct injected diesel. A detailed analysis of the incomplete combustion products was conducted. Test results indicated that carbon monoxide (CO), hydrogen, and light hydrocarbon (HC) made up for most of the combustion in-efficiency in the PPCI mode, while heavier HC and aromatics were significantly higher in the RCCI mode.

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References

Figures

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Fig. 1

Diesel PPCI and dual-fuel RCCI strategies

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Fig. 2

Experimental setup

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Fig. 3

NOx and smoke emission, combustion inefficiency

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Fig. 4

Contributors to combustion inefficiency

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Fig. 5

Effect of increasing gasoline–diesel ratio

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Fig. 6

Cylinder pressure and MFB

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Fig. 7

Load extension—pressure and MFB

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Fig. 8

RCCI load extension—combustion inefficiency

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