People
  1. Students
  2. Alumni
  3. Honorary Graduates
  4. Academic Experts
People

Contact Information

Contact

Visit Keith Robert Pullen

C162, Tait Building

null

Postal Address

City, University of London
Northampton Square
London
EC1V 0HB
United Kingdom

About

Overview

Professor Pullen holds a first degree (1987) and PhD (1990) from Imperial College, the latter being funded on full salary by Rolls-Royce plc for investigations into small high speed turbines and generators. Whilst at Rolls-Royce, He earned three prizes including top undergraduate sponsored and graduate. He left to join Noble Denton in the field of offshore engineering (1990) working in various locations including Norway. In 1992 he returned to Imperial College as a Lecturer to continue research into high speed electrical machines and was a co-founding member of the Turbo Genset Company being employed as Chief of Design. He has undertaken engineering consultancy work for over 15 companies including BP, Red Bull F1, Mercedes Benz F1 HPP, PepsiCo, BOC Edwards, Honeywell Turbochargers and Nortel Networks. As well as teaching subjects such as Design, Vehicle Dynamics and Powertrain, he manages a group of 10 research staff and PhDs and experimental laboratory facilities for high speed machines. He is an author on over 100 papers in international journals and conferences and has 27 Patents granted or pending.

Qualifications

PhD & DIC Mechanical Engineering, Imperial College London, 1991
BEng Mechanical Engineering Total Technology (Sponsor Rolls Royce plc Derby), Imperial College London, 1987

Employment

10/2010 - to date City University London, Professor
01/2008 - 11/2010 City University London, Reader
08/2001 - 12/2007 Imperial College London, Senior Lecturer
09/1992 - 07/2011 Imperial College London, Lecturer
10/1990 - 08/1992 Noble Denton Consultancy Services, Engineer
06/1987 - 09/1990 Rolls-Royce plc, Project Engineer
10/1983 - 05/1987 Rolls-Royce plc, Undergraduate Apprentice Engineer

External examiner, University of Nottingham

2007 - to date Dynamics Boosting Systems Ltd (Imperial College spin out), Director
2011 - to date Ascending Power Ltd (City spin –in), Director
2012 - to date HiETA Ltd, Consultant
2012 - to date Delta Motorsport Ltd, Consultant
2011 - 2013 Mercedes Benz High Performance Powertrains, Consultant
2011 - 2012 SVT Ltd, Consultant
2011 - 2012 Equipmake Ltd, Consultant
2009 - 2010 PepsiCo International, Consultant
2006 - 2007 Red Bull Racing F1, Consultant
2000 - 2007 Turbo Genset Company Ltd /Turbo Power Systems Ltd, Consultant
2003 - 2007 Hiflux Ltd, Consultant
2004 - 2006 Hydroventuri Ltd, Director
1994 - 2000 Turbo Genset Company Ltd, Chief of Design
1992 - 2007 BP Amoco, Rolls-Royce, Honeywell Turbochargers, GKN, DERA, Edwards High Vacuum, Nortel Networks, XKF Developments & OPRA Gas Turbines, Consultant

Membership of professional bodies

Since 2009 Institution of Mechanical Engineers, Fellow
Since 1997 Esso Teaching Fellow, Fellow
Since 1993 Member of the Engineering Council CEng (Chartered Engineer), Member

Research

Small scale energy systems

Mechanical Design of High Power Density Electrical Machines
High speed machines are necessarily compact and create challenging design problems both in the area of thermofluids and structural design. In many cases, design methods for novel geometries are not available in the public domain and must be developed following scientific investigations of particular problems. For example, the aerodynamic loss (windage) and heat transfer from rotating bodies with small air gaps has not been studied to the depth of the geometries typically found in gas turbines and turbomachinery leaving a hole in the knowledge base. Also, structural containment rotor mounted brittle magnetic materials is another challenge which often requires the use of filament wound composite structures. Work has been carried out on generators with sizes ranging from mW to over 1MW with applications of energy harvesting, power generation from small gas turbines and hydro power. Applications include microturbine engines, HVAC, organic rankine cycles and measurement equipment such as high speed dynamometers.

Flywheel Energy storage
The benefit of hybrid powertrains in vehicles for reducing vehicle energy consumption is well established but all commercially available vehicles use electrochemical batteries for energy storage. In urban driving a saving of around 30% can be achieved in like for like comparisons and this is unlikely to be increased due to the inherent losses associated with energy conversions from mechanical to electrical to chemical and back again. Batteries and power conversion electronics mean the price premium for such systems is substantial, increasing the cost of the powertrain components by a factor of up to 5. There are also concerns about the availability of battery materials should such systems be adopted in great numbers. An alternative is to store the energy recovered in regenerative braking mechanically in a flywheel using a continuously variable transmission and various configurations of fixed ratio gears such as epicyclic gears. Fuel savings of up to 70% can then be achieved with potentially much reduced cost given the components are predominantly mechanical. Research is underway examining the flywheel design itself and different transmission systems. This is being applied to both road and rail application.
A very low cost flywheel design has been developed and patented which has the potential for mass application in passenger vehicles being affordable and inherently safe. This design is also suitable for off grid ground power energy storage when supported with a semi-passive permanent magnet bearing system. This has been taken up by a major Japanese Auto OEM and there is significant interest in the ground power system as a low cost distributed system for grid stability.

Low specific speed Turbocompressors
In response to a need for a turbocompressor capable of compressing low flow rates (low specific speed), a new topology was been developed, names TurboClaw. Applications include air charging for fuel cells, HVAC, steam compression, vacuum pumping, supercharging and gas compression. Successful operation of the machine has been proven in experimental tests. The machine has a superior efficiency in comparison to conventional turbocompressors operating under the same conditions and the efficiency is similar to that of positive displacement machines. It is believed that efficiency will be increased further by means of further research, particularly by application of CFD. Work has also been carried out on the design of expander turbines for renewable energy applications at the 10-50 kW level and micro turbines for energy harvesting. The technology has been commercialised by Dynamic Boosting Systems Ltd www.dynamicboost.com.

Appropriate Technology for Developing Countries

It is often the case that Western technology is not suitable in the developing world due to the lack of infrastructure to support it and sometimes the cost. Although providing what is termed "appropriate technology" will of itself not solve problems of poverty, it can be an important tool in the process of improving access to clean water, electricity, and sanitation. It can also play a role in wealth generation by stimulating economic activity by means of local manufacture and maintenance. The recently completed Stove for Cooking, Refrigeration and Electricity was is based on a Thermoacoustic engine fitting into a cook stove such that electricity and refrigeration could be provided at the same time as heat for cooking. This is a multidisciplinary projected funded by EPSRC described at http://www.score.uk.com. The second activity is supported by a charity Developing Technologies, www.developingtechnologies.org whereby students both at City and Imperial College help develop appropriate technology solutions. The work is supported and disseminated with the support of professional engineers.
From this work, proven technologies have reached pilot scale testing in Africa including a motor cycle trailer ambulance, a simple water drill and pump and still for oils of essence.

Recent Research Grants

Low cost electrically driven flywheel TSB Feb 2014- Jan 2016
Part of the £1M TSB consortium with Nissan, Tata Steel and Dynamic Boosting Systems developing a an affordable safe energy storage flywheel.
Selective Laser Manufacture for Engines £122 TSB Feb 2014- Jan 2016
Part of consortium of Hieta Ltd, Bath University researching use of SLM (rapid prototyping) components in engines
Optimised Microturbine Solar Power System (Co-I) EU £1036k Jan 2013- Dec 2017
Cooling of Electrical machines £202k EPSRC Oct 2011 - Mar 2015
Part of the £3M VESI consortium of 10 universities supporting the development of low carbon vehicles. KRP will research and evaluate new cooling methods and rare earth magnet free traction motor mechanical design
Flywheel feasibility study TSB Feb 2013- April 2013
Supercharger research for engine downsizing £25k AVL Powertrain Oct 2013-Oct 2014
TurboClaw compressor research £55k Dynamic Boosting Systems Feb 2011-Jan 2014
Support for PhD student in collaborative project focusing on structural design issues for the TurboClaw compressor
Compressor for a small fuel cell air management system £100k Feb 2010-April 2012
Grant awarded by Technology Strategy Board with partners Acal Energy, Diverse Energy Ltd, Dynamic Boosting Systems and Turbocam. A new geometry of turbocompressor invented by Professor Pullen and his PhD student solves the problem of operating turbocompressors at reasonable speeds when the air flow rate is very low. Results from earlier grant supported by EU of £325,000 with Dr S Etemad 2000-2003 and EPSRC studentship.
Stove for Cooking, Refrigeration and Electricity £263k June 2007-Sept 2012
Grant awarded by EPSRC as part of a call for micro energy provision in the developing world. The £2M consortium is developing a thermo-acoustic engine which draws heat from a biomass cook stove. It offers a low cost alternative to solar voltaics (expensive), wind turbines (intermittent) and microhydro (needs water). Particularly challenging given the working fluid is air under atmospheric mean pressure when other systems require Helium at 30 bar. Net power has now been achieved and engine close to being integrated in the City stove.
Appropriate Technologies £133k at City Jan 2008-current
Grants awarded by the UK charity Developing Technologies (see later) to support development of engineering technology solutions for the developing world. The total raised for this work to date is £317k from sources including the Hadley Trust, the Ashden Trust and a Mondialogo Award. The work supported is mainly at undergraduate level but one PhD has also been supported.

Research Students

Name
R Cattell
Thesis Title
Experimental investigation into the TurboClaw compressor
Further Information
Commenced Mar 2010
Name
J Parra
Thesis Title
Investigation of Reynolds number effects on the Turboclaw compressor performance
Further Information
Experimental and analytical investigation of the effects of Reynolds number scaling of compressor efficiency Commenced Feb 2011
Name
B Yoheswaren
Thesis Title
Cooling of electrical machines
Further Information
Experimental measurement of heat transfer in rotor-stator systems and comparison with computational simulation results. Commenced Oct 2011
Name
M Ghavami
Thesis Title
Microturbine cycle analysis and recuperator research
Further Information
Research as part of OMSoP solar fired microturbine. Co-supervision joint with Prof Sayma Commenced June 2013
Name
A Dhand
Thesis Title
Flywheel based powertrains for automotive application
Further Information
Research and modelling of electric vehicles with flywheels in for overall cost reduction and increase of battery life. Commenced May 2012
Name
M Durdevic
Thesis Title
Flow and heat transfer within wood fired cook stoves
Further Information
Erasmus exchange
Name
Amir Hosseinpour
Thesis Title
Supercharging for engine downsizing
Further Information
Comparison and modelling of turbo and positive displacement superchargers for downsizing of internal combustion engines for smaller vehicles. Commenced Oct 2013
Name
Antonio Arroyo
Thesis Title
Bearings, shaft systems and rotor dynamics for low cost microturbines
Further Information
Research as part of OMSoP solar fired microturbine. Co-supervision joint with Prof Sayma Commenced June 2013
Name
M Amiryar
Thesis Title
Kinetic energy storage systems for domestic and off grid application
Further Information
Techno-economic modelling of small scale electrical power systems with kinetic energy storage. Commenced July 2014.
Name
I Grigorkenchov
Thesis Title
Flywheels for Rail application
Further Information
Modelling of electric rail systems with track side and vehicle borne flywheels for increasing energy efficiency Commenced Oct 2009

Publications

Chapters (6)

  1. Kitade, S. and Pullen, K.R. (2016). Flywheel. Reference Module in Materials Science and Materials Engineering ISBN 978-0-12-803581-8.
  2. Pullen, K.R. and Dhand, A. (2014). Mechanical and electrical flywheel hybrids. Alternative fuels and advanced vehicle technologies for improved environmental performance: Towards zero carbon transportation Woodhead. ISBN 978-0-85709-522-0.
  3. Pullen, K.R. and Dhand, A. (2014). Mechanical and electrical flywheel hybrid technology to store energy in vehicles. Alternative Fuels and Advanced Vehicle Technologies for Improved Environmental Performance: Towards Zero Carbon Transportation (pp. 476–504). ISBN 978-0-85709-522-0.
  4. Pullen, K.R., Martinez-Botas, R. and Buffard,, K. (2002). Design Problems in Micro Turbine Generators. In M J Moore, (Ed.), Micro Turbine Generators Professional Engineering Publishing Limited. ISBN 1-86058-391-1.
  5. Romero-Hernandez, S., Campos-Mejuto, F.J. and Pullen, K.R. (2002). Prediction of Aerothermal Phenomena in High Speed Disc-Stator Systems. Advances of CFD in Fluid Machinery Design Professional Engineering Publishing. ISBN 1-86058-353-9.
  6. Romero-Hernandez, S., Etemad, M.R. and Pullen, K.R. (2000). Numerical Determination of Windage Losses on High-Speed Rotating Discs. In Rhodes, N. (Ed.), Computational Fluid Dynamics in Practice Professional Engineering Publishing.

Conference Papers and Proceedings (67)

  1. Parra, J., Cattell, R., Etemad, S. and Pullen, K.R. (2015). Performance Measurements of a Low Specific Speed TurboClaw® Compressor. .
  2. Yoheswaran, B. and Pullen, K.R. (2014). Flow and Convective Heat Transfer in Disk-Type Electric Machines with Coolant Flow. International Conference on Electrical Machines (ICEM) 2-5 September, Berlin, GERMANY.
  3. Pullen, K.R. and Dhand, A. (2014). Characterization of Flywheel Energy Storage System for Hybrid Vehicles. SAE 2014 World Congress & Exhibition 8-10 April, Detroit, USA.
  4. Arjeneh, M., Pullen, K.R. and Etemad, S. (2013). Experimental study of radial low specific speed turbocompressor running in reverse as turboexpander. .
  5. Pullen, K.R., Grigorchenkov, I. and Johnson, D. (2012). Evaluation of mobile and stationary applications of energy storage for DC railways and rapid transit. RRUKA Annual Conference 2012 7 November, Royal Society, London, UK.
  6. Pullen, K.R., Etemad, S, and Cattell, R, (2012). Experimental investigation of the TurboClaw low specific speed compressor. ASME International Gas Turbine Institute June, Copenhagen, Denmark.
  7. Vocale, P., Dennis, R. and Pullen, K.R. (2012). The SCORE Project: Stove for Cooking, Refrigeration and Electricity. V Congresso Nazionale AIGE June, Modena, Italy.
  8. Pullen, K.R., Etemad, S., Thornton, W.E. and Villegas, J. (2012). The TurboClaw Compressor for Engine Downsizing by Twin-charging. 10th International Conference on Turbochargers and Turbocharging May, Institution of Mechanical Engineers, London.
  9. Pullen, K.R., Etemad, S., Thornton, W. and Villegas, J. (2012). Electrically driven supercharger using the TurboClaw® compressor for engine downsizing. .
  10. Grigorchenkov, I., Pullen, K.R. and Johnson, D. (2012). Modelling energy system impacts of flywheel uptake in rail transport. Universities Transport Study Group 43rd Annual Conference January, Milton Keynes, UK.
  11. Dennis, R. and Pullen, K.R. (2011). Improving Access to Emergency Health Facilities in Rural Areas of Sub Saharan Africa. Appropriate Healthcare for Developing Countries November, Institution of Mechanical Engineers, London.
  12. Pullen, K.R. and Dennis, R. (2011). Developing Technologies at City University. International Conference in Engineering and Product Design Education September, london.
  13. Vick, M.J., Jadaan, O.M., Wereszczak, A.A., Choi, S.R., Heyes, A.L. and Pullen, K.R. (2011). Engine design strategies to maximize ceramic turbine life and reliability. .
  14. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2010). Prediction and Measurement of Heat Transfer in Air-Cooled Disc-Type Electrical Machines. Paper 51 ,PEMD 5th IET International Conference on Power Electronics, Machines and Drives April, Brighton, UK.
  15. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2009). Measurement of stator heat transfer in air-cooled axial flux permanent magnet machines. 35th Annual Conference of the IEEE Industrial Electronics Society November, Porto.
  16. Pullen, K.R., Etemad, S., Vine, A.J., Thornton, W.E. and Turboclaw, (2009). A low cost turbocompressor solution for fuel cells and other applications. International Conference on Compressors and their Systems September, IMechE London.
  17. Vick, M.J., Heyes, A. and Pullen, K.R. (2009). Design Overview of a Three-Kilowatt Recuperated Ceramic Turboshaft Engine. 8-12 June, Orlando, Florida.
  18. Pullen, K.R. and Dennis, R. (2009). A Case Study of Drilling Water Wells Illustrating the work of Developing Technologies. EWB-UK Research Conference February, Royal Academy of Engineering, London.
  19. Pullen, K.R. and Diego-Ayala Martinez-Gonzalez, P. (2008). A Simple Mechanical Transmission System for Hybrid Vehicles incorporating a Flywheel. December, Warwick.
  20. Pullen, K.R. and Ellis, C.H.W. (2008). The Vehicle as Kinetic Energy System. ATZ Auto Technology October.
  21. Pullen, K.R. and Ellis, C. (2006). Kinetic Energy Storage for Vehicles. IET and IMechE Hybrid Vehicles Conference December, PARD, Warwick University.
  22. Idris, M. and Pullen, K.R. (2006). The Effect of Pre-swirl on the Discharge Coefficient of Rotating Axial Orifices. International Conference on Energy and Environment (ICEE 2006) 28-30 August, Selangor, Malaysia.
  23. Kahn, P. and Pullen, K.R. (2006). Realistic student enquiries and capacity building for engineering solutions to world poverty. The International Conference on Innovation, Good Practice and Research in Engineering Education .
  24. Vine, A., Thornton, W., Pullen, K.R. and Etemad, M. (2005). Compact air compressor for transport applications. October, London, England.
  25. Vine, A.J., Thornton, W.E., Pullen, K.R. and Etemad, M.R. (2005). Low specific speed turbo-compressors. September, IMechE London.
  26. Pullen, K.R., Pang, A.J., Desmulliez, M.P.Y., Leonard, M., Dhariwal, R.S., Reuben, R.L., Holmes, A.S., Hong, G., Waldron, F., Slattery, O., Rencz, M., Emerson, D.R. and Barber, R.W. (2004). Design, manufacture and testing of a low-cost micro-channel cooling device. 6th Electronics Packaging Technology Conference (EPTC 2004) 8-10 December, Singapore.
  27. Pullen, K.R., Pang A.J., , Desmulliez, M.P.Y., Leonard M., , Dhariwal R.S., , Reuben R.L., , Holmes A.S., , Hong G., , Waldron F., , Slattery O., , Rencz M., , Emerson D.R., and Barber R.W., (2004). Modelling, manufacture and test of a microchannel cooling plate for microelectronics packaging. 6th Electronics Material and Packaging Conference (EMAP 2004) 5-7 December, Penang, Malaysia.
  28. Pullen, K.R., Diego-Ayala, U., Shah, S., Chicurel, R., Carmono, G. and aGonzalez, (2004). A study on regenerative braking for a hydro-pneumatic electric hybrid vehicle by means of simulation. Inst of Elec and Electronic Engrs Vehicle and Propulsion Power Symposium October, Paris.
  29. Holmes, A.S., Hong, G., Pullen, K.R. and Buffard, K.R. (2004). Axial-flow microturbine with electromagnetic generator: design, CFD simulation and prototype demonstration. 25-29 January, Maastricht, The Netherlands.
  30. Idris, A., Pullen, K.R. and Read, R. (2004). The influence of incidence angle on the discharge coefficient for rotating radial orifices. Vienna, Austria.
  31. Pullen, K.R., Shah, S. and Diego-Ayala, U. (2004). Mechanical Energy Storage Hybrid – Simulation and Life cycle costs. 2004 European ELE-DRIVE Transportation conference Cascais, Portugal.
  32. Ellis, C. and Pullen, K.R. (2004). Regenerative Braking for Strong Hybrids. Paper F2004F113 FISITA World Automotive Conference Barcelona.
  33. Holmes, A.S., Heaton, M.E., Hong, G., Pullen, K.R. and Rumsby, P.T. (2003). Laser profiling of 3-D microturbine blades. 21-24 June, Munich, Germany.
  34. Hong, G., Holmes, A.S., Heaton, M.E. and Pullen, K.R. (2003). Design, fabrication and characterization of an axial-flow turbine for flow sensing. Proc. Transducers '03 8-12 June, Boston MA, USA.
  35. Vine, A.J., Thornton, W.E., Pullen, K.R. and Etemad, M.R. (2003). Low specific speed turbo-compressor. IMechE International Conference – Compressors and their Systems London, England.
  36. Pullen, K.R., Szymko, S. and Martinez-Botas, R. (2002). A high-speed, permanent magnet eddy-current dynamometer for turbocharger research. Turbochargers and turbocharging VII: 7th international conference May, London, England.
  37. Pullen, K.R., Campos-Mejuto, F.J. and Romero-Hernández, S. (2001). Prediction of Aerothermal Phenomena in High-Speed Disc-Stator Systems. Conference in Computational Methods in Engineering IMechE .
  38. Pullen, K.R., Martinez Botas, R. and Buffard, K. (2000). Design Problems for Micro Turbine Generators. IMechE Conference December, London.
  39. Lamperth, M.U., Pullen, K.R. and Mueller, K.G. (2000). Turbogenerator based Hybrid Verses Dieselelectric Hybrid. .
  40. Court, A.W., Pullen, K.R. and Besant, C.B. (1999). Small Gas Turbine Design: A total technology experience. 3rd European Conference on Turbomachinery – Inst. Mech Engrs London, England.
  41. Pullen, K.R., Etemad, M.R. and Fenocchi, A. (1999). A robust high speed electrical machine for compact compressors and gas expanders. IMechE International Conference – Compressors and their systems London, England.
  42. Pullen, K.R. and Lamperth, M.U. (1999). How size and Performance of Hybrid Electric Vehicle Components are Influenced by Acceleration Patterns. SAE Technical Paper Series 1999-01-2909 Fuel Transport Technology California.
  43. Lamperth, M.U. and Pullen, K.R. (1999). Impact of Acceleration Patterns on Size and Performance of Hybrid Electric Vehicle Components. Florence, Italy.
  44. Pullen, K.R., Mansir, H. and Fenocchi, A. (1999). High Power Air Cooled Motor Generators for Automotive Applications. Electric Machine Design for all-electric and hybrid electric vehicles - IEE London, England.
  45. Pullen, K.R. and Khalif, S. (1999). On the application of Turboboosters for Series Hybrid Electric Vehicles. IMechE AUTOTECH 99 Paper C575-5 Birmingham, England.
  46. Pullen, K.R., Romero-Hernandez, S. and Etemad, M.R. (1999). Numerical Determination of Windage Losses on High-Speed Rotating Discs. Computational Fluid Dynamics : Technical Developments and Future Trends Conference IMechE, London.
  47. Pullen, K.R., Court, A.W. and Besant, C.B. (1998). The Advanced Turbogenerator Project – A total technology education experience for engineering undergraduate students. ASME IGTI Paper 98-GT-23 Stockholm, Sweden.
  48. Pullen, K.R., Lampérth, M.U. and Etemad, M.R. (1998). A parametric optimisation study of diesel and gas turbine series hybrid electric vehicles. Paper 98EL040–31st ISATA Dusseldorf.
  49. Pullen, K.R., Etemad, M.R. and Lamperth, M.U. (1997). A description of a performance simulation methodology and software for electric and hybrid vehicles. Florence, Italy.
  50. Lamperth, M.U., Pullen, K.R. and Etemad, M.R. (1997). Development of an analysis software to allow electromechanical battery modelling for electric and hybrid vehicles. Florence, Italy.
  51. Court, A.W., Pullen, K.R. and Besant, C.B. (1997). Integrating multiple engineering departments and industry in undergraduate design projects. International conference on engineering design Tampere, Finland.
  52. Besant, C.B., Pullen, K.R., Etemad, M.R., Leontopoulos, C. and Lamperth, M.U. (1997). Application of Turbogenerators to Hybrid Electric Vehicles. IMechE Paper C524/185/97 AUTOTECH 97 Birmingham.
  53. Pullen, K.R., M R Etemad, , C Leontopoulos, and R Waring, (1997). Gas Turbine engines for hybrid vehicles. ISATA magazine January.
  54. Pullen, K.R., Etemad, M.R., Leontopoulos, C. and Waring, R. (1996). Development of a Small Gas Turbine Engine for Series Hybrid Electric Vehicles. Florence, Italy.
  55. Etemad, M.R., Pullen, K.R., Fenocchi, A., Hall, J.A. and Green, T. (1996). The High Speed Disc Generator - Development Progress. Florence, Italy.
  56. Martinez-Botas, R.F., Pullen, K.R. and Shi, F. (1996). Numerical Calculations of a turbine volute using a 3D Navier-Stokes Solver. ASME 96-GT-66 - International Gas Turbine and Aeroengine Congress Birmingham, England.
  57. Pullen, K.R., Etemad, M.R. and Fenocchi, A. (1996). The high speed axial flux disc generator - unlocking the potential of the automotive gas turbine. Machines and drives for electric and hybrid vehicles - IEE London.
  58. Etemad, M.R. and Pullen, K.R. (1995). Further Developments of a Gas Turbine Series Hybrid for Automotive Use. Paper SIA9506A22 - 5th International EAEC Conference of Powertrain and the Environment Strasbourg.
  59. Etemad, M.R., Fenocchi, A., Hall, J.A. and Pullen, K.R. (1995). Turbogenerators; a new way forward. IMechE Paper C498/29/079 AUTOTECH 95 Birmingham.
  60. Pullen, K.R. (1994). Magnetic couplings. March, Banbury.
  61. Liebenburg, L., Nel, A. and Pullen, K.R. (1994). Computer Simulation of Electric, Gas Turbine and Gas Turbine Hybrid Electric Vehicles. SAE Paper 941733 – SAE International Off-Highway and Powerplant Congress and Exposition Milwuakee, Wisconsin.
  62. Pullen, K.R., Martinez-Botas, R. and Leontopoulos, C. (1994). Factors influencing the Choice of Gas Turbine Engine for Series Hybrid Electric Vehicles. Aachen, Germany.
  63. Pullen, K.R., MEtemad, M.R., Fenocchi, A. and Hall, J.A. (1994). An Evaluation of High Speed Generators. Aachen, Germany.
  64. Etemad, M.R., Fenocchi, A., Hall, J. and Pullen, K.R. (1993). Hybrid Turbogenerator Vehicle (HTV). Paper 93EL021 ,26th ISATA conference proceedings September, Aachen, Germany.
  65. Pullen, K.R., Baines, N.C. and Hill, S. (1992). The Design and Evaluation of a High Pressure Ratio Radial Turbine. .
  66. Karal, K., Pullen, K.R., Skjong, J. and Vinje, T. (1992). Lowering of Subsea Structures by Guided Fall Along a Circuituous Trajectory. San Francisco.
  67. Pullen, K.R. (1992). A Case for the Gas Turbine Series Hybrid. .

Journal Articles (32)

  1. Dennis, R. and Pullen, K. (2017). Vehicles for rural transport services in sub-Saharan Africa. Proceedings of the Institution of Civil Engineers - Transport pp. 1–7. doi:10.1680/jtran.15.00081.
  2. Amiryar, M.E. and Pullen, K.R. (2017). A Review of Flywheel Energy Storage System Technologies and Their Applications. APPLIED SCIENCES-BASEL, 7(3) . doi:10.3390/app7030286.
  3. Dhand, A. and Pullen, K.R. (2016). Analysis of Dual Mode Continuously Variable Transmission for Flywheel Energy Storage Systems. SAE Technical Papers . doi:10.4271/2016-01-1177.
  4. Dhand, A. and Pullen, K. (2015). Optimal energy management for a flywheel-assisted battery electric vehicle. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 229(12), pp. 1672–1682. doi:10.1177/0954407014567720.
  5. Dhand, A. and Pullen, K. (2015). Review of battery electric vehicle propulsion systems incorporating flywheel energy storage. International Journal of Automotive Technology, 16(3), pp. 487–500. doi:10.1007/s12239-015-0051-0.
  6. Dhand, A. and Pullen, K. (2015). Analysis of continuously variable transmission for flywheel energy storage systems in vehicular application. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 229(2), pp. 273–290. doi:10.1177/0954406214533096.
  7. Read, M.G., Smith, R.A. and Pullen, K.R. (2015). Optimisation of flywheel energy storage systems with geared transmission for hybrid vehicles. Mechanism and Machine Theory, 87, pp. 191–209. doi:10.1016/j.mechmachtheory.2014.11.001.
  8. Dennis, R. and Pullen, K. (2013). Development of a wood-fired cooking stove to incorporate a thermo-acoustic engine-generator unit. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, 227(7), pp. 740–751. doi:10.1177/0957650913498735.
  9. Chen, B.M., Riley, P.H., Abakr, Y.A., Pullen, K., Hann, D.B. and Johnson, C.M. (2013). Design and development of a low-cost, electricity-generating cooking Score-Stove™. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 227(7), pp. 803–813. doi:10.1177/0957650913498733.
  10. Dhand, A. and Pullen, K.R. (2013). Review of Flywheel based Internal Combustion Engine Hybrid Vehicles. International Journal of Automotive Technology, 14(5), pp. 797–804. doi:10.1007/s12239-013-0088-x.
  11. Sanchez, T., Dennis, R. and Pullen, K.R. (2013). Cooking and lighting habits in rural Nepal and Uganda. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 227(7), pp. 727–739. doi:10.1177/0957650913498872.
  12. Dhand, A. and Pullen, K. (2013). Simulation based study of battery electric vehicle performance in real world cycles. International Journal of Electric and Hybrid Vehicles, 5(4), pp. 327–327. doi:10.1504/IJEHV.2013.059372.
  13. Vick, M.J., Jadaan, O.M., Wereszczak, A.A., Choi, S.R., Heyes, A.L. and Pullen, K.R. (2012). Engine design strategies to maximize ceramic turbine life and reliability. Journal of Engineering for Gas Turbines and Power, 134(8) . doi:10.1115/1.4005817.
  14. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2011). Measurement and CFD Prediction of Heat Transfer in Air-Cooled Disc-Type Electrical Machines. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 47(4), pp. 1716–1723. doi:10.1109/TIA.2011.2156371.
  15. Vick, M.J., Heyes, A. and Pullen, K. (2010). Design overview of a three kilowatt recuperated ceramic turboshaft engine. Journal of Engineering for Gas Turbines and Power, 132(9) . doi:10.1115/1.4000585.
  16. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2010). Radially resolved measurement of stator heat transfer in a rotor-stator disc system. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 53(1-3), pp. 491–501. doi:10.1016/j.ijheatmasstransfer.2009.09.006.
  17. Read, M.G., Smith, R. and Pullen, K.R. (2009). Are Flywheels Right for Rail? International Journal of Railway, 2(4), pp. 139–146.
  18. Howey, D.A. and Pullen, K.R. (2009). Hydraulic air pumps for low-head hydropower. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, 223(A2), pp. 115–125. doi:10.1243/09576509JPE645.
  19. Vick, M.J., Heyes, A. and Pullen, K. (2009). Design overview of a three-kilowatt recuperated ceramic turboshaft engine. Paper GTP-09-1049 ASME Journal of Engineering for Gas Turbines and Power, 5 .
  20. Diego-Ayala, U., Martinez-Gonzalez, P., McGlashan, N. and Pullen, K.R. (2008). The mechanical hybrid vehicle: an investigation of a flywheel-based vehicular regenerative energy capture system. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 222(D11), pp. 2087–2101. doi:10.1243/09544070JAUTO677.
  21. Romero-Hernandez, S., Romero-Hernandez, O. and Pullen, K.R. (2008). Diseno de un dispositivo experimental papa medicion de perdidas aeroinamicas en discos girando a alta velocidad. Proceedings of the Mexican Society of Mechanical Engineers, 2(6), pp. 185–192.
  22. Kahn, P. and Pullen, K.R. (2007). Realistic student enquiries, global challenges and the role of a development charity. Journal of the Higher Education Academy, 2(2) .
  23. Szymko,, S., McGlashan, N.R., Martinez-Botas, R. and Pullen, K.R. (2007). The development of a dynamometer for torque measurement of automotive turbocharger turbines. P I MECH ENG D-J AUT, 221, pp. 225–239.
  24. Holmes, A.S., Hong, G. and Pullen, K.R. (2005). Axial-flux, permanent magnet machines for micropower generation. IEEE/ASME J. Microelectromechanical Systems, 14(1), pp. 54–62.
  25. Idris, A. and Pullen, K.R. (2005). Correlations for the discharge coefficient of rotating orifices based on incidence angle. Part A: Journal of Power and Energy, 219, pp. 333–352.
  26. Idris, A., Pullen, K.R. and Barnes, D. (2004). An Investigation into the Flow within Inclined Rotating Orifices and the Influence of Incidence Angle on the Discharge Coefficient. Part A: Journal of Power and Energy, 218 .
  27. Panting, J., Pullen, K.R. and Martinez-Botas, R. (2001). Turbocharger Motor-Generator for Improvement of Transient Performance in an Internal Combustion Engine. Journal of Automobile Engineering,– Proc Instn Mech Eng Part D, 215, pp. 369–383.
  28. Panting, J. and Pullen, K.R. (2000). Thermodynamic studies of a novel aero engine concept. Journal of Aerospace Engineering,– Proc Instn Mech Eng Part G, 210, pp. 71–83.
  29. Court, A.W., Pullen, K.R. and Besant, C.B. (1999). Small Gas Turbine Design: A total technology experience. ” Proc. Instn. Mech. Engrs., Part A: Journal of Power and Energy, 213, pp. 339–347.
  30. Leontopoulos, C., Pullen, K.R., Etemad, M.R. and Lamperth, M.U. (1998). Hybrid Vehicle simulation for a turbo-generator based powertrain. Journal of Automobile Engineering, Proc Instn Mech Eng Part D, 212 Part D, pp. 357–368.
  31. Waring, R., Hall, J., Pullen, K.R. and Etemad, M.R. (1996). An Investigation of Face Type Magnetic Couplers. Journal of Power and Energy Part A – Proc Instn Mech Eng, 210, pp. 263–272.
  32. Etemad, M.R., Pullen, K.R., Besant, C.B. and Baines, N.C. (1992). Evaluation of windage losses for high speed disc machinery. Proc. Instn. Mech. Engrs., Part A: Journal of Power and Energy, 206, pp. 149–157.

Patents (37)

  1. Pullen, K.R. and Hammerbeck, J. (2009). Active Cooling. Patent no. GB0916737.0
  2. Pullen, K.R. (2008). Low cost energy storage flywheel. Patent no. WO Patent WO/2008/071,955
  3. MDraper, M., Pullen, K.R. and Buffard, K. (2006). Wave Energy Converter with Air Compression (WECWAC).
  4. Pullen, K.R. and Shah, S. (2006). Flywheel Rotor.
  5. Pullen, K.R., Barnes, D., Besant, T. and Demargne, A. (2005). Heat exchanger.
  6. Vine, A. and Pullen, K.R. (2004). High forward sweep compressor(High forward sweep compressor). Patent no. PCT/GB2004/003752
  7. Pullen, K.R. and Hall, J. (2001). Improved Stator Cooling(Multi-path convoluted stator channels ). Patent no. GB Application number 0117556.1
  8. Pullen, K.R., Etemad, M. and Fenocchi, A. (2001). Stator Winding(Flattened bridged stator winding ). Patent no. GB Application number 0126758.2
  9. Pullen, K.R., Etemad, M. and Fenocchi, A. (2001). Stator Winding(Flattened bridged stator winding ). Patent no. US Application number 10/290,025
  10. Pullen, K.R., Ahsan, A. and Waring, R. (2000). Stator Support(Axial Field Electrical Generators). Patent no. PCT/GB01/00451
  11. Pullen, K.R., Horton, K., Etemad, M., Fenocchi, A., Eggleston, L. and Bolton, H. Axial Field Electrical Generator(Axial Field Electrical Generator). Patent no. US patent 5 021 689
  12. Pullen, K.R., Fenocchi, A., Etemad, M., Ristic, M. and Besant, C. Keeper discs and air cooling(Axial Field Electrical Generators). Patent no. British Patent GB 2 261 327 B
  13. Pullen, K.R., Fenocchi, A., Besant, C., Etemad, M. and Ristic, M. Stator Cooling: airflow from rim to centre(Axial Field Electrical Generators). Patent no. British patent GB 2 289 576 B
  14. Pullen, K.R., Fenocchi, A., Besant, C., Etemad, M. and Ristic, M. Non hoop carbon fibre windings(Axial Field Electrical Generators). Patent no. British patent GB 2 289 802 B
  15. Pullen, K.R., Ristic, M., Etemad, M. and Besant, C. Hydraulic explansion of retention ring(Axial Field Electrical Generators). Patent no. British patent GB 2 278 504 B
  16. Pullen, K.R. and Kulkarni, K. Low cost Automotive Alternator(Low cost Automotive Alternator). Patent no. US Patent 5,962,942
  17. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. European Patent EP 96919938.9(EP-0829126)
  18. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. US Patent US RE 37844
  19. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. European Patent EP 98115766.2(EP-0887911)
  20. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. US Patent US 6,424,069
  21. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. Liquid cooling(Axial Field Electrical Generators). Patent no. European Patent EP 97934660.8(EP-0917757)
  22. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. Liquid cooling(Axial Field Electrical Generators). Patent no. US Patent US 6,304,011
  23. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. External interference fit(Axial Field Electrical Generators). Patent no. European Patent EP 97934661.6(EP-0917756)
  24. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. External interference fit(Axial Field Electrical Generators). Patent no. US Patent US 6,195,869
  25. Pullen, K.R. Variable airgap(Variable airgap generator). Patent no. US Patent US 6,404,097
  26. Pullen, K.R. and Hall, J. Improved Stator Cooling(Multi-path convoluted stator channels ). Patent no. US Patent US 6,798,097 B2
  27. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Ground down button magnets(Axial Field Electrical Generators). Patent no. US RE 37844
  28. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Ground down button magnets(Axial Field Electrical Generators). Patent no. European Patent EP 96919938.9 (EP-0829126)
  29. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling(Axial Field Electrical Generators). Patent no. European Patent EP 98115766.2 (EP-0887911)
  30. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling(Axial Field Electrical Generators). Patent no. US 09/468,997 (US-6,424,069)
  31. Pullen, K.R., Horton, K., Etemad, M., Fenocchi, A., Eggleston, L. and Bolton, H. Axial Field Electrical Generator(Field Electrical Generator). Patent no. British patent GB 2 222 031 B
  32. Pullen, K.R., Etemad, , Fenocchi, M. and Eggleston, L. Axial Field Electrical Generator(Axial Field Electrical Generator). Patent no. European patent EP 0 353 042-B
  33. Pullen, K.R., Horton, K., Etemad, M., Fenocchi, A., Eggleston, L. and Bolton, H. Axial Field Electrical Generator(Axial Field Electrical Generator). Patent no. Japanese Patent JP 2705982
  34. Pullen, K.R. Regenerative compressor. Patent no. GB 2366333
  35. Pullen, K.R., Rochester, G. and Hassard, J. Rochester Venturi(Apparatus for Extracting Power from a Fluid Flow). Patent no. PCT/GB/2003/001171
  36. Rochester, G. and Pullen, K.R. Rochester Venturi - Vortex(Apparatus for Extracting Power from a Fluid Flow). Patent no. PCT/GB/2003/001173
  37. Pullen, K.R. Low grade heat electrical generator.

Education

- Module Leader for BEng and MEng Design - 60 students including responsibility for Formula Student, Grid Stability Flywheel and Developing Technologies Design projects
- Module Leader for Vehicle Dynamics Part 3 and Part 4
- Teaching ½ Module on Vehicle Powertrain
- Part 2 introduction to Vehicle Dynamics
- Devised and run "Wind Design Challenge" - a week long design, make and test for Part 1 students

Find us

City, University of London

Northampton Square

London EC1V 0HB

United Kingdom

Back to top

City, University of London is an independent member institution of the University of London. Established by Royal Charter in 1836, the University of London consists of 18 independent member institutions with outstanding global reputations and several prestigious central academic bodies and activities.