• Development of autoignition model for natural gas engines
This project (PhD thesis project) mainly involved engine testing, operating data acquisition systems (including LabView), analyzing the relevant data collected, and FORTRAN programming. This project was sponsored by John Deere and Iowa State University and completed in May 2000.

• Design and fabrication of an experimental device to measure the speed of sound at high pressures and temperatures.
The device provided speed of sound and bulk modulus at pressures to 5000 psi and temperatures to 100 degree C. The project was sponsored by National Renewable Energy Laboratory (May 1998 - December 1998).

• Investigating the emission effects of a fuel additive on a John Deere 4276T turbocharged diesel engine.
This project mainly involved operation with a DC dynamometer and emission instruments to investigate the long-term effects of a lubricity-enhancing fuel additive on a John Deere 4276T turbocharged diesel engine. The project was sponsored by the United Soybean Board of Washington D.C. (December 1997 – April 1998).

• Determination of knock sensor location on a John Deere Heavy-Duty Natural Gas Engine (MS thesis project)
This project mainly involved operation of a DC dynamometer and measurement and analysis of engine block vibration data. The project was sponsored by John Deere and Iowa State University and completed in Spring 1997 at Iowa State University.

• Emission tests of a diesel engine powered Dodge pick-up by using 2% biodiesel as engine fuel
Chassis dynamometer operation and the emission measurement to determine the emission characteristics of a Dodge pick-up by using 2% biodiesel in diesel fuel as the engine fuel. The project sponsored by the Michigan Soybean Promotion Board (September 1997 - February 1998).

JOURNALS

• Seref Soylu, Estimation of Turkish Road Transport Emissions, ENERGY POLICY, Volume 35, İssue 8, Pages 4088-4094, 2007.

Cited by: 0

• Schumacher, LG; Soylu, S; Van Gerpen, J; et al., Fueling direct injected diesel engines with 2% biodiesel blend, APPLIED ENGINEERING IN AGRICULTURE, 21 (2): 149-152 MAR 2005.

Cited by: 0

• Seref Soylu, Examination of Combustion Characteristics and Phasing Strategies of a Natural Gas HCCI Engine, Energy Conv. And Management, Vol.46/1, 2005, P 101-119

Cited by: 5

1. Park, S.W., Reitz, R.D.
Numerical study on the low emission window of homogeneous charge compression ignition diesel combustion
(2007) Combustion Science and Technology, 179 (11), pp. 2279-2307. 

2. Zeng, W., Xie, M., Jia, M.
Numerical investigation on the application of catalytic combustion to HCCI engines
(2007) Chemical Engineering Journal, 127 (1-3), pp. 81-93. 

3. Zeng, W., Xie, M.
Multi-dimensional modeling of the application of catalytic combustion to homogeneous charge compression ignition engine
(2006) Journal of Thermal Science, 15 (4), pp. 371-376. 

4. Keshavarz, M., Jazayeri, S.A.
Performance of Homogenous Charge Compression Ignition (HCCI) engine with premixed methane/air supported by DME for electrical power generation application
(2006) American Society of Mechanical Engineers, Internal Combustion Engine Division (Publication) ICE, 2006.

5. Lu, X., Hou, Y., Ji, L., Zu, L., Huang, Z.
Heat release analysis on combustion and parametric study on emissions of HCCI engines fueled with 2-propanol/n-heptane blend fuels
(2006) Energy and Fuels, 20 (5), pp. 1870-1878. Cited 4 times.

• Seref Soylu, Prediction of Knock Limited Operating Conditions of a Natural Gas Engine, Energy Conv. And Management, Vol. 46/1, 2005, P121-138.

Cited by: 0

• Seref Soylu, Jon Van Gerpen, "Development of empirically based burning rate sub-models for a natural gas engine"Energy Conv. and Management, Vol. 45/14 pp. 467 -481, 2003.

Cited by: 1

1. Deng, J., Li, W., Zhang, Z.
Performance analysis of a household gas engine driven heat pump at varied environment temperature
(2007) Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University, 41 (1), pp. 28-31. 

• Seref Soylu, Jon Van Gerpen, "Development of an autoignition submodel for natural gas engines" Journal of FUEL, Vol. 82/14 pp. 1699 - 1707, 2003.

Cited by: 3

1. Li, F.C., Zheng, Q.P., Zhang, H.M.
Effect of Di-tertiary-butyl peroxide on ignition performance in a compression ignition natural gas engine
(2007) International Journal of Automotive Technology, 8 (4), pp. 413-419.

2. Liu, J.-W., Gong, J.-K., Tang, D.-X., Gao, W.-G., Zhong, Z.-H.
Numerical study of knock trend of natural gas engine based on a multidimensional model
(2006) Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering, 27 (3), pp. 1-6.

3. Zheng, Q.P., Zhang, H.M., Zhang, D.F.
A computational study of combustion in compression ignition natural gas engine with separated chamber
(2005) Fuel, 84 (12-13), pp. 1515-1523.

• Tat, M. E., J.H. Van Gerpen, S. Soylu, M. Canakci, A. Monyem, and S Wormley, "The Speed of sound and Isentropic Bulk Modulus of Biodiesel at 21 degree C from Atmspheric Pressure to 35 MPa" ,Journal of the American Oil Chemists' Society, July 1999.

Cited by: 25

CONFERENCE

• Seref Soylu, Combustion analysis of a natural gas engines,ICES2003-563 ASME spring conference ICED 2003, Salzburg, Austria, 2003.
• Seref Soylu, Simple modeling of combustion for natural gas engines, SAE 2002-01-2733, 2002
• Seref Soylu, Prediction of Knock Limited Oerating Conditions of a Natural Gas Engine,Automotive Technologies Congress, June 24-26, 2002, Uludag University, Bursa.
• Van Gerpen, J.H., S. Soylu, and M.E. Tat, " Evaluation of the Lubricity of Soybean Oil-based Additives in Diesel Fuel," ASAE Paper No 996134, presented at the American Society of Agricultural Engineers 1999 Annual Meeting, Toronto, Canada, July 1999.
• L. G. Schumacher, Seref Soylu, J. Van Gerpen, W. Wetherell, "Fueling Direct Injected Diesel Engines with 2% Biodiesel Blend.", ASAE 98-6084, 1998.
• Seref Soylu and J. Van Gerpen, "Fuel Effects on the Knocking Limit of a Heavy-Duty Natural Gas Engine." SAE Paper No 981401, 1998.
• Seref Soylu and J. Van Gerpen, "Determination of Knock sensor Location on a Heavy-duty Natural Gas engine." SAE Paper No 971705, 1997.
• Seref Soylu, "A State of the Art Survey of Natural Gas and Biogas Engine Technology." A final Report to the Iowa Energy Center, 1997.

LEGISLATIVE WORKS AND PRESENTATIONS

• Seref Soylu, Overview of the US EPA Certification Standards for Deposit Control Additives (DETERGENTS), European Commission – JRC, Review of Directive 98/70/EC as amended by directive. 2003/17/EC relating the quality of petrol and diesel fuel., 05.04.2005  Eurpean Commission, BRUSSELS.

THESES

• Seref Soylu, Autoignition modeling of natural gas for engine modeling programs: An experimental modeling study.,Ph.D. Thesis, Iowa State University, USA, 2001.
• Seref Soylu, "Determination of Knock Sensor Location on a John Deere 6076 Natural Gas Engine." M.S. Thesis, Iowa State University, USA, 1996