Chen, T., Xie, H., Li, L., Yu, W., Li, Z. and Zhao, H. (2011) 'Continuous load adjustment strategy of a gasoline HCCI-SI engine fully controlled by exhaust gas'. SAE Technical Papers.

Zhang, Y., Zhao, H., Ojapah, M. and Cairns, A. (2011) 'Experiment and analysis of a direct injection gasoline engine operating with 2-stroke and 4-stroke cycles of spark ignition and controlled auto-ignition combustion'. SAE Technical Papers.

Zhao, H., Psanis, C., Ma, T., Turner, J. and Pearson, R. (2011) 'Theoretical and experimental studies of air-hybrid engine operation with fully variable valve actuation'. International Journal of Engine Research, 12 (6). pp. 527 - 548. ISSN: 1468-0874

Lee, CY., Zhao, H. and Ma, T. (2011) 'Pneumatic regenerative engine braking technology for buses and commercial vehicles'. SAE International Journal of Engines, 4 (3). pp. 2687 - 2698. ISSN: 1946-3936

Zhang, Y., Zhao, H., Ojapah, M. and Cairns, A. (2011) 'Analysis of CAI/HCCI combustion in a 2-stroke poppet valve engine'. Institution of Mechanical Engineers - Internal Combustion Engines: Improving Performance, Fuel Economy and Emissions. pp. 127 - 134.

Herfatmanesh, MR., Zhao, H. and Ganippa, L. (2011) 'In-cylinder studies of split injection in a single cylinder optical diesel engine', inInternal Combustion Engines: Improving Performance, Fuel Economy and Emissions. pp. 99 - 109. ISBN 13: 9780857092052.

Ojapah, M., Zhang, Y., Zhao, H. and Ganippa, L. (2011) 'Particulate matter emission from different combustion modes in a 2/4 stroke switchable direct injection gasoline engine', inInternal Combustion Engines: Improving Performance, Fuel Economy and Emissions. pp. 75 - 83. ISBN 13: 9780857092052.

Xia, J., Luo, KH. and Zhao, H. (2011) 'Dynamic large-eddy simulation of droplet effects on a reacting plume in countercurrent configuration'. Combustion Science and Technology, 183 (5). pp. 487 - 518. ISSN: 0010-2202

Yang, C. and Zhao, H. (2011) 'In-cylinder studies of CAI/HCCI combustion with negative valve overlap in a direct injection gasoline optical engine'. Combustion Science and Technology, 183 (5). pp. 467 - 486. ISSN: 0010-2202

Zhao, H., Psanis, C. and Ma, T. (2011) 'Analysis of an air hybrid engine concept with an energy recovery valve'. International Journal of Vehicle Design, 55 (1). pp. 49 - 75. ISSN: 0143-3369

Herfatmanesh, MR., Zhao, H. and Ganippa, L. (2011) 'In-cylinder studies of split injection in a single cylinder optical diesel engine'.Conference on Internal Combustion Engines - Improving Performance, Fuel Economy and Emissions. London, ENGLAND. 1 - 30 November. Elsevier. pp. 99 - 109.

Cairns, A., Zhao, H., Zhang, Y. and Ojapah, M. (2011) 'Experiment and Analysis of a Direct Injection Gasoline Engine Operating with 2-stroke and 4-stroke Cycles of Spark Ignition and Controlled Auto-Ignition Combustion'.JSAE ANNUAL CONGRESS. SAE International. ISSN: 0148-7191

Chen, T., Xie, H., Li, L., Yu, W., Li, Z. and Zhao, H. (2011) 'Continuous load adjustment strategy of a gasoline HCCI-SI engine fully controlled by exhaust gas'.SAE 2011 World Congress & Exhibition. SAE International. ISSN: 0148-7191

Ojapah, M., Zhang, Y., Zhao, H. and Ganippa, L. (2011) 'Particulate matter emission from different combustion modes in a 2/4 stroke switchable direct injection gasoline engine'.Conference on Internal Combustion Engines - Improving Performance, Fuel Economy and Emissions. London, ENGLAND. 1 - 30 November. Elsevier. pp. 75 - 83.

Zhang, Y., Zhao, H., Ojapah, M. and Cairns, A. (2011) 'Effects of injection timing on CAI operation in a 2/4-stroke switchable GDI engine'. SAE Technical Papers.

Bai, SZ., Zhao, H. and Li, GX. (2010) 'Two-dimensional gas-phase temperature measurements in engine using laser-induced phosphorescence thermometry'. Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology, 16 (6). pp. 515 - 518. ISSN: 1006-8740

Yang, CH. and Zhao, H. (2010) 'In-cylinder studies of hybrid combustion in a direct injection single-cylinder optical engine'. International Journal of Engine Research, 11 (6). pp. 515 - 531. ISSN: 1468-0874

Zhang, Y., Zhao, H., Xie, H. and He, BQ. (2010) 'Variable-valve-actuation-enabled high-efficiency gasoline engine'. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 224 (8). pp. 1081 - 1095. ISSN: 0954-4070

Li, N., Xie, H. and Zhao, H. (2010) 'Effect of the temperature inhomogeneity on the auto-ignition based on an exhaust gas management gasoline engine'. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics, 31 (8). pp. 1419 - 1422. ISSN: 0253-231X

Diez, A. and Zhao, H. (2010) 'Effect of the dwell angle of split injection in a single-cylinder optical diesel engine'. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 224 (6). pp. 815 - 828. ISSN: 0954-4070

Yang, C., Theinnoi, K., Hemmings, S., Megaritis, A., Tsolakis, A. and Zhao, H. (2010) 'Periodically Regenerating Diesel Particulate Filter with Hydrogen Addition: Towards a Fuel Reformer – Diesel Engine Aftertreatment System'.FISITA 2010 World Automotive Congress. Budapest, Hungary. 30 - 4 June. Woodhead Publishing Limited. pp. 235 - 244.

Tongroon, M. and Zhao, H. (2010) 'Combustion characteristics of CAI combustion with alcohol fuels'.SAE 2010 World Congress & Exhibition: Kinetically Controlled CI Combustion and Controls. SAE International. pp. Paper number 2010-01-0843 - Paper number 2010-01-0843. ISSN: 0148-7191 Open Access Link

Diez, A. and Zhao, H. (2010) 'Investigation of split injection in a single cylinder optical diesel engine'.SAE World Congress and Exhibition. Detroit, MI, USA. 12 SAE International. ISSN: 0148-7191 Open Access Link

Lee, CY., Zhao, H. and Ma, T. (2010) 'A low cost air hybrid concept'. Oil and Gas Science and Technology - Revue d'IFP Energies Nouvelles, 65 (1). pp. 19 - 26. ISSN: 1294-4475 Open Access Link

Lee, CY., Zhao, H. and Ma, T. (2010) 'A low cost air hybrid concept'. Oil and Gas Science and Technology, 65 (1). pp. 19 - 26. ISSN: 1294-4475

Li, N., Xie, H., Shen, M. and Zhao, H. (2010) 'CFD study on effects of thermal and residual gas inhomogeneous distribution on auto-ignition of gasoline HCCI combustion'.SAE 2010 World Congress & Exhibition. SAE International. ISSN: 0148-7191

Lee, CY., Zhao, H. and Ma, T. (2010) 'The performance characteristics of an production oriented air hybrid powertrain'. SAE Technical Papers, 3 (1). pp. 609 - 619. ISSN: 0148-7191

Zhao, H. (2009) 'Advanced direct injection combustion engine technologies and development: Diesel engines'. Cambridge, UK: Woodhead Publishing Limited. ISSN 10: 1 84569 744 8 ISSN 13: 978 1 84569 744 0

Zhao, H. (2009) 'Overview of gasoline direct injection engines', inAdvanced Direct Injection Combustion Engine Technologies and Development: Gasoline and Gas Engines. pp. 1 - 19. ISBN 13: 9781845693893.

Zhao, H. (2009) 'Direct injection gasoline engines with autoignition combustion', inAdvanced Direct Injection Combustion Engine Technologies and Development: Gasoline and Gas Engines. pp. 133 - 165. ISBN 13: 9781845693893.

Zhao, H. (2009) 'Advanced direct injection combustion engine technologies and development: Gasoline and gas engines'. Cambridge, UK: Woodhead Publishing Limited. ISSN 10: 1 84569 389 2 ISSN 13: 978 1 84569 389 3

Yang, C., Zhao, H. and Megaritis, A. (2009) 'Investigation of CAI Combustion with Positive Valve Overlap and Enlargement of CAI Operating'.SAE World Congress 2009. Detroit, USA. 20 - 23 April. SAE International. ISSN: 0148-7191

Yang, C., Zhao, H. and Megaritis, A. (2009) 'In-cylinder studies of CAI Combustion with Negative Valve Overlap and Simultaneous Chemiluminescence Analysis'.SAE World Congress 2009. Detroit, USA. 20 - 23 April. SAE International. ISSN: 0148-7191

Bai, S., Li, G., Zhao, H. and Williams, DJR. (2009) 'Experiment Study of Stratified Combustion at Different Boost Pressure'.Asia-Pacific Power and Energy Engineering Conference (APPEEC). Wuhan, PEOPLES R CHINA. 1 - 31 March. IEEE. pp. 280. ISSN: 2157-4839

Zhao, H. and Ganippa, L. (2009) 'Laser Induced Incandescence (LII)', in Lackner, M. (ed.) Laser diagnostics in combustion. pp. 77 - 118. ISBN 10: 3902655038. ISBN 13: 9783902655035.

Lee, CY., Zhao, H. and Ma, T. (2009) 'Analysis of a cost effective air hybrid concept'.SAE World Congress & Exhibition. SAE International. ISSN: 0148-7191

Kalian, N., Zhao, H. and Yang, C. (2009) 'Effects of spark-assistance on controlled auto-ignition combustion at different injection timings in a multicylinder direct-injection gasoline engine'. International Journal of Engine Research, 10 (3). pp. 133 - 148. ISSN: 1468-0874

Jagus, K., Jiang, X., Dober, G., Greeves, G., Milanovic, N. and Zhao, H. (2009) 'Assessment of large-eddy simulation feasibility in modelling the unsteady diesel fuel injection and mixing in a high-speed direct-injection engine'. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 223 (8). pp. 1033 - 1048. ISSN: 0954-4070

Zhao, H. and He, BQ. (2008) 'High efficiency and low emission powertrain technologies for passenger cars'. Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines), 26 (SUPPL.). pp. 68 - 76. ISSN: 1000-0909

Kalian, N., Zhao, H. and Qiao, J. (2008) 'Investigation of transition between spark ignition and controlled auto-ignition combustion in a V6 direct-injection engine with cam profile switching'. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 222 (10). pp. 1911 - 1926. ISSN: 0954-4070 Open Access Link

Kalian, N. and Zhao, H. (2008) 'Effects of extended exhaust and intake duration on CAI combustion in a multi-cylinder di gasoline engine'. Institution of Mechanical Engineers: Combustion Engines and Fuels Group - Internal Combustion Engines: Performance, Fuel Economy and Emissions. pp. 303 - 315.

McWilliam, L., Megaritis, A. and Zhao, H. (2008) 'Experimental Investigation of the Effects of Combined Hydrogen and Diesel Combustion on the Emissions of a HSDI Diesel Engine'.SAE International Powertrains, Fuels and Lubricants Congress. Shanghai, China. 25 - 25 June. SAE International. ISSN: 0148-7191

Li, Y., Zhao, H. and Brouzos, N. (2008) 'CAI combustion with methanol and ethanol in an air-assisted direct injection SI engine'.SAE International Powertrains, Fuels and Lubricants Congress. Shanghai, China. 23 SAE International. ISSN: 0148-7191 Open Access Link

Li, Z., Xie, H. and Zhao, H. (2008) 'Studies of the control of in-cylinder inhomogeneities in a 4VVAS gasoline engine'.SAE World Congress & Exhibition. SAE International. ISSN: 0148-7191

Zhou, N., Xie, H., Li, N., Chen, T. and Zhao, H. (2008) 'Study on layered close loop control of 4-Stroke Gasoline HCCI engine equipped with 4VVAS'.SAE World Congress & Exhibition. SAE International. ISSN: 0148-7191

Gill, K. and Zhao, H. (2008) 'In-cylinder studies of fuel injection and combustion from a narrow cone fuel injector in a high speed single cylinder optical engine'.2008 SAE International Powertrains, Fuels and Lubricants Congress. SAE International. ISSN: 0148-7191

Martins, M. and Zhao, H. (2008) '4-stroke multi-cylinder gasoline engine with controlled auto-ignition (CAI) combustion: A comparison between naturally aspirated and turbocharged operation'.2008 SAE Brasil Congress and Exhibit. SAE International. ISSN: 0148-7191

Cao, L., Zhao, H. and Jiang, X. (2008) 'Analysis of controlled auto-ignition/HCCI combustion in a direct injection gasoline engine with single and split fuel injections'. Combustion Science and Technology, 180 (1). pp. 176 - 205. ISSN: 0010-2202 Open Access Link

Zhao, H. and Zhang, S. (2008) 'Quantitative measurements of in-cylinder gas composition in a controlled auto-ignition combustion engine'. Measurement Science and Technology, 19 (1). pp. 015409 - 015409. ISSN: 0957-0233

Zhao, H. (2007) 'HCCI and CAI engines for the automotive industry'. Woodhead Publishing Limited. ISSN 13: 9781845691288

Zhao, H. (2007) 'Four-stroke CAI engines with residual gas trapping', inHCCI and CAI Engines for the Automotive Industry. Elsevier. pp. 103 - 135. ISBN 13: 9781845691288.