All Outputs (20)

Evaluation of E10 and NH3 co-fuelling in a modern spark ignition engine (2023)
Book Chapter
Ambalakatte, A., Geng, S., Cairns, A., La Rocca, A., Harrington, A., Hall, J., & Bassett, M. (2023). Evaluation of E10 and NH3 co-fuelling in a modern spark ignition engine. . Taylor & Francis

Ammonia (NH3) is emerging as a potential favoured fuel for longer range decarbonised heavy transport, particularly in the marine sector, predominantly due to highly favourable characteristics as an effective hydrogen carrier. This is despite generall... Read More about Evaluation of E10 and NH3 co-fuelling in a modern spark ignition engine.

Airgap Length Analysis of a 350kW PM-Assisted Syn-Rel Machine for Heavy Duty EV Traction (2022)
Journal Article
Zou, T., Gerada, D., La Rocca, S., La Rocca, A., Walker, A., Vakil, G., …Gerada, C. (2023). Airgap Length Analysis of a 350kW PM-Assisted Syn-Rel Machine for Heavy Duty EV Traction. IEEE Transactions on Industry Applications, 59(2), 1557-1570. https://doi.org/10.1109/TIA.2022.3225255

Synchronous reluctance (Syn-Rel) machines with embedded permanent magnets (PMs) are research hotspots in variable speed motor drives due to their robust rotor structure and wide constant power speed range (CPSR). In this paper, the potential of PM-as... Read More about Airgap Length Analysis of a 350kW PM-Assisted Syn-Rel Machine for Heavy Duty EV Traction.

Performance Assessment of Standard Cooling Strategies for Hairpin Windings (2022)
Conference Proceeding
La Rocca, A., La Rocca, S., Zou, T., Liu, C., Moslemin, M., Gerada, C., & Cairns, A. (2022). Performance Assessment of Standard Cooling Strategies for Hairpin Windings. In 2022 International Conference on Electrical Machines (ICEM) (1163-1169). https://doi.org/10.1109/icem51905.2022.9910733

This paper aims to assess the performance of some standard cooling strategies which are commonly used in traction electric motors for electric vehicles (EVs) employing hairpin windings. The use of such type of coils does normally lead to higher power... Read More about Performance Assessment of Standard Cooling Strategies for Hairpin Windings.

Mild hybridisation of turboprop engine with high-power-density integrated electric drives (2022)
Journal Article
Cossart, G., Chen, Y., Yang, T., Khowja, M., La Rocca, A., Nasir, U., …Wheeler, P. (2022). Mild hybridisation of turboprop engine with high-power-density integrated electric drives. IEEE Transactions on Transportation Electrification, 8(4), 4148-4162. https://doi.org/10.1109/TTE.2022.3160153

This paper shares with the aerospace community a case study of turboprop mild hybridisation using a recently developed integrated drive system in the University of Nottingham, UK, within the ACHIEVE project under EU H2020 CleanSky 2 program (project... Read More about Mild hybridisation of turboprop engine with high-power-density integrated electric drives.

A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors (2022)
Journal Article
Zou, T., Gerada, D., La Rocca, A., Moslemin, M., Cairns, A., Cui, M., …Gerada, C. (2022). A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors. IEEE Transactions on Transportation Electrification, 8(3), 3578-3593. https://doi.org/10.1109/TTE.2022.3149786

The rapidly increasing demand on power density levels of electric vehicle (EV) drive systems is pushing the boundaries of traction motor performance. Hairpin windings are becoming a popular option for EV motors due to their reduced DC losses and impr... Read More about A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors.

Research and Realization of High-Power Medium-Voltage Active Rectifier Concepts for Future Hybrid-Electric Aircraft Generation (2020)
Journal Article
Trentin, A., Sala, G., Tarisciotti, L., Galassini, A., Degano, M., Connor, P. H., …Gerada, C. (2021). Research and Realization of High-Power Medium-Voltage Active Rectifier Concepts for Future Hybrid-Electric Aircraft Generation. IEEE Transactions on Industrial Electronics, 68(12), 11684-11695. https://doi.org/10.1109/TIE.2020.3040692

In this article, we describe the research and development of a 3 kV active rectifier for a 4 MW aerospace generator drive system demonstrator. The converter is fed by a multiphase high-speed/high-frequency permanent magnet generator. The main aim of... Read More about Research and Realization of High-Power Medium-Voltage Active Rectifier Concepts for Future Hybrid-Electric Aircraft Generation.

Investigating the impact of copper leaching on combustion characteristics and particulate emissions in HPCR diesel engines (2019)
Journal Article
La Rocca, A., Ferrante, A., Haffner-Staton, E., Cairns, A., Weilhard, A., Sans, V., …Laforgia, D. (2020). Investigating the impact of copper leaching on combustion characteristics and particulate emissions in HPCR diesel engines. Fuel, 263, Article 116719. https://doi.org/10.1016/j.fuel.2019.116719

© 2019 Elsevier Ltd Copper leaching in diesel fuel and its impact on combustion and emission characteristics of a Direct Injection High Pressure Common Rail (DI HPCR) diesel engine was investigated. This work was performed using a single cylinder Ric... Read More about Investigating the impact of copper leaching on combustion characteristics and particulate emissions in HPCR diesel engines.

Quantifying soot nanostructures: Importance of image processing parameters for lattice fringe analysis (2019)
Journal Article
Pfau, S. A., La Rocca, A., & Fay, M. W. (2020). Quantifying soot nanostructures: Importance of image processing parameters for lattice fringe analysis. Combustion and Flame, 211, 430-444. https://doi.org/10.1016/j.combustflame.2019.10.020

Fringe analysis is a commonly used method to quantify soot nanostructures. However, the settings of the involved filters and their impact on the results are rarely addressed. In this study, the influence of the three filter parameters as well as two... Read More about Quantifying soot nanostructures: Importance of image processing parameters for lattice fringe analysis.

Soot in the Lubricating Oil: An Overlooked Concern for the Gasoline Direct Injection Engine? (2019)
Journal Article
Pfau, S. A., La Rocca, A., Haffner-Staton, E., Rance, G. A., Fay, M. W., & McGhee, M. (2019). Soot in the Lubricating Oil: An Overlooked Concern for the Gasoline Direct Injection Engine?. SAE Technical Papers, 2019-April, Article 2019-01-0301. https://doi.org/10.4271/2019-01-0301

Formation of soot is a known phenomenon for diesel engines, however, only recently emerged for gasoline engines with the introduction of direct injection systems. Soot-in-oil samples from a three-cylinder turbo-charged gasoline direct injection (GDI)... Read More about Soot in the Lubricating Oil: An Overlooked Concern for the Gasoline Direct Injection Engine?.

Assessing the Accuracy of Soot Nanoparticle Morphology Measurements Using Three-Dimensional Electron Tomography (2019)
Journal Article
Haffner-Staton, E., La Rocca, A., Cairns, A., McGhee, M., & Fay, M. (2019). Assessing the Accuracy of Soot Nanoparticle Morphology Measurements Using Three-Dimensional Electron Tomography. SAE Technical Papers, 2019-April, Article 2019-01-1188. https://doi.org/10.4271/2019-01-1188

Morphology plays an important role in determining behaviour and impact of soot nanoparticles, including effect on human health, atmospheric optical properties, contribution to engine wear, and role in marine ecology. However, its nanoscopic size has... Read More about Assessing the Accuracy of Soot Nanoparticle Morphology Measurements Using Three-Dimensional Electron Tomography.

Comparative nanostructure analysis of gasoline turbocharged direct injection and diesel soot-in-oil with carbon black (2018)
Journal Article
Pfau, S., La Roca, A., Haffner-Staton, E., Rance, G., Fay, M., Brough, R., & Malizia, S. (2018). Comparative nanostructure analysis of gasoline turbocharged direct injection and diesel soot-in-oil with carbon black. Carbon, 139, 342-352. https://doi.org/10.1016/j.carbon.2018.06.050

Two gasoline turbocharged direct injection (GTDI) and two diesel soot-in-oil samples were compared with one flame-generated soot sample. High resolution transmission electron microscopy imaging was employed for the initial qualitative assessment of t... Read More about Comparative nanostructure analysis of gasoline turbocharged direct injection and diesel soot-in-oil with carbon black.

Morphological Characterisation of Diesel Soot in Oil and the Associated Extraction Dependence (2018)
Conference Proceeding
Key, S., La Rocca, A., Fay, M., Rance, G., & Growney , D. (2018). Morphological Characterisation of Diesel Soot in Oil and the Associated Extraction Dependence. In SAE Technical Paper. https://doi.org/10.4271/2018-01-0935

The size and morphology of soot particles and agglomerates extracted from lubricating oil drawn from the sump of a diesel engine have been investigated and compared using Transmission Electron Microscopy (TEM) and Nanoparticle Tracking Analysis (NTA)... Read More about Morphological Characterisation of Diesel Soot in Oil and the Associated Extraction Dependence.

Progress towards a methodology for high throughput 3D reconstruction of soot nanoparticles via electron tomography (2018)
Journal Article
Haffner-Staton, E., La Rocca, A., & Fay, M. (2018). Progress towards a methodology for high throughput 3D reconstruction of soot nanoparticles via electron tomography. Journal of Microscopy, 270(3), 272-289. https://doi.org/10.1111/jmi.12680

The aim of this work is to make progress towards the development of 3D reconstruction as a legitimate alternative to traditional 2D characterisation of soot. Time constraints are the greatest opposition to its implementation, as currently reconstruct... Read More about Progress towards a methodology for high throughput 3D reconstruction of soot nanoparticles via electron tomography.

Towards keeping diesel fuel supply and demand in balance: dual-fuelling of diesel engines with natural gas (2016)
Journal Article
Hegab, A., La Rocca, A., & Shayler, P. (2017). Towards keeping diesel fuel supply and demand in balance: dual-fuelling of diesel engines with natural gas. Renewable and Sustainable Energy Reviews, 70, 666-697. https://doi.org/10.1016/j.rser.2016.11.249

With the continuous growth of energy demand for the commercial transport sector, the market share of diesel vehicles is rising in several areas worldwide. Global demand for transport energy is therefore believed to be strongly skewed towards heavier... Read More about Towards keeping diesel fuel supply and demand in balance: dual-fuelling of diesel engines with natural gas.

Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements (2016)
Journal Article
Orhan, O., Haffner-Staton, E., La Rocca, A., & Fay, M. (2016). Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements. Tribology International, 104, 272-284. https://doi.org/10.1016/j.triboint.2016.09.015

This work characterises soot nanoparticles by electron tomography using Weighted Back Projection algorithm and appraises the uncertainties in two-dimensional calculations by comparison with 3D parameters for flame-generated soot and diesel soot-in-oi... Read More about Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements.

The initiation and development of combustion under cold idling conditions using a glow plug in diesel engines (2016)
Journal Article
Li, Q., Shayler, P. J., McGhee, M. J., & La Rocca, A. (2017). The initiation and development of combustion under cold idling conditions using a glow plug in diesel engines. International Journal of Engine Research, 18(3), 240-255. https://doi.org/10.1177/1468087416652266

Factors determining the success or failure of combustion initiation using a glow plug have been investigated through experimental work on a single cylinder, common rail diesel engine with a geometric compression ratio of 15.5, and a quiescent combust... Read More about The initiation and development of combustion under cold idling conditions using a glow plug in diesel engines.

Soot-in-oil 3D volume reconstruction through the use of electron tomography: an introductory study (2015)
Journal Article
La Rocca, A., Campbell, J., Fay, M., & Orhan, O. (2016). Soot-in-oil 3D volume reconstruction through the use of electron tomography: an introductory study. Tribology Letters, 61(1), Article 8. https://doi.org/10.1007/s11249-015-0625-z

Understanding soot nanoparticle interaction with oil additives and the causes of soot-induced thickening would assist in lubricant formulation, prolonging engine life and improving engine efficiency. Three-dimensional measurement of soot structures i... Read More about Soot-in-oil 3D volume reconstruction through the use of electron tomography: an introductory study.

Characterisation of soot in oil from a gasoline direct injection engine using Transmission Electron Microscopy (2015)
Journal Article
La Rocca, A., Bonatesta, F., Fay, M., & Campanella, F. (2015). Characterisation of soot in oil from a gasoline direct injection engine using Transmission Electron Microscopy. Tribology International, 86, 77-84. https://doi.org/10.1016/j.triboint.2015.01.025

In this work, an investigation of soot-in-oil samples drawn from the oil sump of a gasoline direct injection (GDI) engine was carried out. Soot particulate was characterised in terms of size, distribution and shape of the agglomerates, and internal s... Read More about Characterisation of soot in oil from a gasoline direct injection engine using Transmission Electron Microscopy.

Part-Load Particulate Matter from a GDI Engine and the Connection with Combustion Characteristics (2014)
Journal Article
Bonatesta, F., Chiappetta, E., & La Rocca, A. (2014). Part-Load Particulate Matter from a GDI Engine and the Connection with Combustion Characteristics. Applied Energy, 124(1), 366-376. https://doi.org/10.1016/j.apenergy.2014.03.030

The Gasoline Direct Injection engines are an important source of ultra-fine particulate matter. Significant research effort is still required as improved understanding of soot formation is critical in considering further development or adoption of ne... Read More about Part-Load Particulate Matter from a GDI Engine and the Connection with Combustion Characteristics.

Application of nanoparticle tracking analysis platform for the measurement of soot-in-oil agglomerates from automotive engines (2013)
Journal Article
La Rocca, A., Di Liberto, G., Shayler, P., Parmenter, C., & Fay, M. (2014). Application of nanoparticle tracking analysis platform for the measurement of soot-in-oil agglomerates from automotive engines. Tribology International, 70, 142-147. https://doi.org/10.1016/j.triboint.2013.09.018

Nanoparticle Tracking Analysis (NTA) has been applied to characterising soot agglomerates of particles and compared with Transmission Electron Microscoscopy (TEM). Soot nanoparticles were extracted from used oil drawn from the sump of a light duty au... Read More about Application of nanoparticle tracking analysis platform for the measurement of soot-in-oil agglomerates from automotive engines.