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Browsing University of Hertfordshire by Author "Imran, Shahid"
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Assessment of elliptic flame front propagation characteristics of hydrogen in an optically accessible spark ignition engine
Ihracska, Balazs; Wen, Dongsheng; Imran, Shahid; Emberson, David R.; Ruiz, Lina María; Crookes, Roy J.; Korakianitis, Theodosios (2013-11-22)The absence of carbon content of hydrogen fuel makes it an attractive candidates for future energy carriers. Hydrogen or dual fuelled engines are a practical alternative to pure hydrocarbon fuelling modes. However, fine ... -
Optical characterization of Diesel and water emulsion fuel injection sprays using shadowgraphy
Emberson, David R.; Ihracska, Balazs; Imran, Shahid; Diez, Alvaro (2016-08-31)Diesel fuel and water emulsions have been shown to reduce emissions of NOx and PM from compression ignition engines. There is a lack of work examining the influence of emulsification on the sprays formed during injection. ... -
Opto-mechanical design for sight windows under high loads
Ihracska, Balazs; Crookes, Roy James; Montalvão, Diogo; Herfatmanesh, Mohammad Reza; Peng, Jun; Imran, Shahid; Korakianitis, Theodosios (2017-03-05)In this study, the design aspects of optically accessible pressure vessels are investigated via a case study of a High Pressure Combustor experimental rig. The rig was designed to take optical measurements of combustion, ... -
Performance and specific emissions contours throughout the operating range of hydrogen-fueled compression ignition engine with diesel and RME pilot fuels
Imran, Shahid; Emberson, David R.; Hussain, Amjad; Ali, Hassan; Ihracska, Balazs; Korakianitis, T. (2015-09)This paper presents the performance and emissions contours of a hydrogen dual fueled compression ignition (CI) engine with two pilot fuels (diesel and rapeseed methyl ester), and compares the performance and emissions ...