Sam Akehurst – Research Output — the University of Bath's research portal

2019

Novel approaches to evaluation, modelling and emulation of advanced boosting systems

Akehurst, S., 22 Jan 2019.

Research output: Contribution to conference › Other

Sensitivity of diesel combustion metrics derived from in-cylinder pressure measurements

Dowell, P., Akehurst, S. & Burke, R., 23 May 2019, In : Journal of Engineering for Gas Turbines and Power: Transactions of the ASME. 141, 9, 11 p., 091005.

Research output: Contribution to journal › Article

Open Access

File

The effect of fuel composition on particulate emissions from a highly boosted GDI engine - an evaluation of three particulate indices

Akehurst, S., Turner, J., Lewis, A., Leach, F., Stone, R., Cracknell, R., Shankar, V. & Richardson, D., 6 May 2019, In : Fuel. 252, p. 598-611 14 p.

Research output: Contribution to journal › Article

Open Access

2018

Accuracy of diesel engine combustion metrics over the full range of engine operating conditions

Dowell, P. G., Burke, R. D. & Akehurst, S., 1 Jan 2018, Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development. American Society of Mechanical Engineers (ASME), Vol. 2.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Alcohol fuels for spark-ignition engines: performance, efficiency and emissions effects at mid to high blend rates for binary mixtures and pure components

Turner, J., Lewis, A., Akehurst, S., Brace, C., Verhelst, S., Vancoillie, J., Sileghem, L., Leach, F. & Edwards, P. P., 1 Jan 2018, In : Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 232, 1, p. 36-56

Research output: Contribution to journal › Article

Alcohol fuels

Binary mixtures

Internal combustion engines

Alcohols

Gasoline

Development and Optimisation of an Adaptive Safety Monitor

Akehurst, S., Hillis, A. & Botes, F., 3 Apr 2018.

Research output: Contribution to conference › Paper

Powertrains

Fault detection

Monitoring

Availability

Calibration

Experimental analysis of the V-Charge variable drive supercharger system on a 1.0 L GTDI engine

Hu, B., Akehurst, S., Lewis, A. G. J., Lu, P., Millwood, D., Copeland, C., Chappell, E., De Freitas, A., Shawe, J. & Burtt, D., 1 Mar 2018, In : Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 232, 4, p. 449-465 17 p.

Research output: Contribution to journal › Article

Open Access

File

Superchargers

Engines

Transient analysis

Gasoline

Torque

1 Citation (Scopus)

Octane Response of a Highly Boosted Direct Injection Spark Ignition Engine at Different Compression Ratios

Akehurst, S., Lewis, A. & Giles, K., 3 Apr 2018.

Research output: Contribution to conference › Paper

Direct injection

Internal combustion engines

Engines

Antiknock rating

Fuel economy

8 Citations (Scopus)

Particulate emissions from a highly boosted gasoline direct injection engine

Lewis, A., Akehurst, S., Turner, J., Leach, F., Stone, R., Richardson, D., Remmert, S., Cracknell, R. & Campbell, S., 1 Mar 2018, In : International Journal of Engine Research. 19, 3, p. 347-359 13 p.

Research output: Contribution to journal › Article

Open Access

Particulate emissions

Direct injection

Gasoline

Engines

Fuel injection

7 Citations (Scopus)

The effect of oxygenate fuels on PN emissions from a highly boosted GDI engine

Leach, F. C. P., Stone, R., Richardson, D., Turner, J. W. G., Lewis, A., Akehurst, S., Remmert, S., Campbell, S. & Cracknell, R., 1 Aug 2018, In : Fuel. 225, p. 277-286 10 p.

Research output: Contribution to journal › Article

Direct injection

Gasoline

Engines

Air cushion vehicles

Particulate Matter

2017

An improved rate of heat release model for modern high speed diesel engines

Dowell, P., Akehurst, S. & Burke, R., 1 Sep 2017, In : Journal of Engineering for Gas Turbines and Power: Transactions of the ASME. 139, 9, 092805.

Research output: Contribution to journal › Article

Diesel engines

Engines

Fuel injection

Hot Temperature

Hardware

2 Citations (Scopus)

A novel predictive semi-physical feed-forward turbocharging system transient control strategy based on mean-value turbocharger model

Tang, H., Copeland, C., Akehurst, S., Brace, C., Davies, P., Pohorelsky, L., Smith, L. & Capon, G., 1 Oct 2017, In : International Journal of Engine Research. 18, 8, p. 765-775

Research output: Contribution to journal › Article

Open Access

File

Turbines

Geometry

Gasoline

Engines

Powertrains

1 Citation (Scopus)

A real-time capable mixing controlled combustion model for highly diluted conditions

Dowell, P., Akehurst, S. & Burke, R., 15 Aug 2017, In : Energy. 133, p. 1035-1049 15 p.

Research output: Contribution to journal › Article

Open Access

File

Exhaust gas recirculation

Engine cylinders

Dilution

Engines

Charge injection

Characterisation and Optimisation of a Real-Time Diesel engine model

Dowell, P. G., Akehurst, S. & Burke, R. D., 1 Dec 2017, In : Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. p. 1913-1934 32 p.

Research output: Contribution to journal › Article

Open Access

File

Diesel engines

Engines

Exhaust gas recirculation

Engine cylinders

Hardware

Implementing full electric turbocharging systems on highly boosted gasoline engines

Zhang, Q., Lu, P., Dimitriou, P., Akehurst, S., Copeland, C., Zangeneh, M., Richards, B. & Fowler, G., 2017, ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition: Volume 8 :Microturbines, Turbochargers and Small Turbomachines; Steam Turbines. American Society of Mechanical Engineers (ASME), p. V008T26A032 10 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Gasoline

Engines

Compressors

Turbines

Internal combustion engines

2 Citations (Scopus)

Influence of Coolant Temperature and Flow Rate, and Air Flow on Knock Performance of a Downsized, Highly Boosted, Direct-Injection Spark Ignition Engine

Asif, M., Giles, K., Lewis, A., Akehurst, S. & Turner, N., 28 Mar 2017, In : SAE Technical Paper Series. 2017, March

Research output: Contribution to journal › Article

Direct injection

Internal combustion engines

Coolants

Flow rate

Electric sparks

1 Citation (Scopus)

Numerical investigation into the performance and efficiency trade-off for a mechanically decoupled electric boosting system

Liu, Y., Burke, R., Akehurst, S. & Zhang, Q., 16 Oct 2017.

Research output: Contribution to conference › Paper

Observations on and potential trends for mechanically supercharging a downsized passenger car engine: a review

Hu, B., Turner, J. W. G., Akehurst, S., Brace, C. & Copeland, C., 1 Mar 2017, In : Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 231, 4, p. 435-456 22 p.

Research output: Contribution to journal › Article

Open Access

File

Passenger cars

Superchargers

Engines

Supercharging

Electric load loss

Road bumps for electric cars

Leach, F., Akehurst, S., Brace, C., Busch, I. H., Cairns, A., Davy, M. H., Gavaises, M., Heikal, M., Linne, M., Shayler, P., Stone, R., Taylor, A., Turner, J., Wyszynski, M., Xu, H. & Zhao, J. H., 2 Sep 2017, In : Economist (United Kingdom). 413, 9053

Research output: Contribution to journal › Letter

2016

1 Citation (Scopus)

An improved rate of heat release model for modern high speed diesel engines

Dowell, P. G., Akehurst, S. & Burke, R. D., 1 Jan 2016, ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016. U. S. A.: American Society of Mechanical Engineers (ASME), p. V001T05a003 16 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Diesel engines

Engines

Fuel injection

Hot Temperature

Hardware

1 Citation (Scopus)

A Study on Dynamic Torque Cancellation in a Range Extender Unit

Liu, D., Rodrigues, L., Brace, C., Akehurst, S., Kirkpatrick, G. & Ash, L., 5 Apr 2016.

Research output: Contribution to conference › Paper

Torque

Electric machinery

Engines

Electric losses

Torque control

2 Citations (Scopus)

Development of a Low Cost Production Automotive Engine for Range Extender Application for Electric Vehicles

Agarwal, A., Lewis, A., Brace, C. & Akehurst, S., 5 Apr 2016.

Research output: Contribution to conference › Paper

Electric vehicles

Engines

Fuel economy

Exhaust manifolds

Costs

1 Citation (Scopus)

Fuel efficiency optimization for a divided exhaust period regulated two-stage downsized spark ignition engine

Hu, B., Akehurst, S., Brace, C., Lu, P., Copeland, C. & Turner, J. W. G., 1 May 2016, In : Journal of Engineering for Gas Turbines and Power: Transactions of the ASME. 138, 5, p. 1 - 9 9 p., 051507.

Research output: Contribution to journal › Article

Internal combustion engines

Scavenging

Engines

Brakes

Fuel consumption

9 Citations (Scopus)

Novel approaches to improve the gas exchange process of downsized turbocharged spark-ignition engines: a review

Hu, B., Akehurst, S. & Brace, C., 1 Aug 2016, In : International Journal of Engine Research. 17, 6, p. 595-618 24 p.

Research output: Contribution to journal › Article

Internal combustion engines

Engines

Gases

Pressurization

Superchargers

19 Citations (Scopus)

Stochastic dynamic programming in the real-world control of hybrid electric vehicles

Vagg, C., Akehurst, S., Brace, C. & Ash, L., May 2016, In : IEEE Transactions on Control Systems Technology. p. 853-866

Research output: Contribution to journal › Article

File

Powertrains

Hybrid vehicles

Dynamic programming

Dynamometers

Controllers

1 Citation (Scopus)

Thermal management of a low cost range extender for electric vehicles

Agarwal, A., Rodrigues, L., Liu, D., Lewis, A. G. J., Akehurst, S., Brace, C. J., Kirkpatrick, G. & Ash, L., 2016, Proceedings of the 6th Hybrid and Electric Vehicles Conference (HEVC 2016). Institution of Engineering and Technology, p. 16

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Electric vehicles

Temperature control

Coolants

Engines

Costs

2015

7 Citations (Scopus)

A New De-throttling Concept in a Twin-Charged Gasoline Engine System

Hu, B., Copeland, C., Lu, P., Akehurst, S., Brace, C., Turner, J. W. G., Romagnoli, A. & Martinez-Botas, R., 14 Apr 2015, In : SAE International Journal of Engines. 8, 4, p. 1553-1561

Research output: Contribution to journal › Article

Superchargers

Gasoline

Engines

Speed control

Engine cylinders

12 Citations (Scopus)

A review of the application of variable geometry turbines to the downsized gasoline engine

Tang, H., Pennycott, A., Akehurst, S. & Brace, C., Oct 2015, In : International Journal of Engine Research. 16, 6, p. 810-825

Research output: Contribution to journal › Article

Fuel efficiency optimization for a divided exhaust period regulated two-stage downsized SI engine

Hu, B., Akehurst, S., Brace, C., Lu, P., Copeland, C. D. & Turner, J. W. G., Jun 2015, Microturbines, Turbochargers and Small Turbomachines; Steam Turbines. U. S. A.: American Society of Mechanical Engineers (ASME), Vol. 8. p. V008T23A012 10 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Scavenging

Engines

Intake valves

Engine cylinders

Electric sparks

4 Citations (Scopus)

Improving Heat Transfer and Reducing Mass in a Gasoline Piston using Additive Manufacturing

Copeland, C., Reyes Belmonte, M., Drummond, H., Hopkins, G., Schmieder, A., Bredda, S. W. & Akehurst, S., 2015, SAE Technical Paper. SAE International, 2015-01-0505

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3D printers

Pistons

Gasoline

Heat transfer

Engines

4 Citations (Scopus)

Modelling the Performance of the Torotrak V-Charge Variable Drive Supercharger System on a 1.0L GTDI - Preliminary Simulation Results

Hu, B., Tang, H., Akehurst, S., De Freitas, A., Burtt, D. & Shawe, J., 1 Sep 2015, In : SAE Technical Papers. 2015-September, September

Research output: Contribution to journal › Article

Superchargers

Clutches

Engines

Transient analysis

Compressors

9 Citations (Scopus)

Novel approaches to improve the gas exchange process of downsized turbocharged SI engines – A review

Hu, B., Akehurst, S. & Brace, C., 2015, In : International Journal of Engine Research. p. 1 - 24 24 p.

Research output: Contribution to journal › Article

Open Access

File

Engines

Pressurization

Gases

Air

1 Citation (Scopus)

Predicting the nitrogen oxides emissions of a diesel engine using neural networks

Zhang, Q., Pennycott, A., Burke, R., Akehurst, S. & Brace, C., 14 Apr 2015, SAE Technical Papers. SAE International

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nitrogen oxides

Diesel engines

Neural networks

Engines

Calibration

4 Citations (Scopus)

Review of turbocharger mapping and 1D modelling inaccuracies with specific focus on two-stage systems

Avola, C., Copeland, C., Duda, T., Burke, R., Akehurst, S. & Brace, C., 2 Jul 2015, SAE 12th International Conference on Engines & Vehicles (ICE), 2015. SAE International, 18 p. 2015-24-2523

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Compressors

Turbines

Engines

Powertrains

Internal combustion engines

Study on the Effects of EGR Supply Configuration on Cylinder-to-Cylinder Dispersion and Engine Performance Using 1D-3D Cosimulation

Dimitriou, P., Burke, R., Copeland, C. & Akehurst, S., 17 Nov 2015.

Research output: Contribution to conference › Paper

Exhaust gas recirculation

Engine cylinders

Engines

Air intakes

Turbulence

3 Citations (Scopus)

Study on the Effects of EGR Supply Configuration on Cylinder-to-Cylinder Dispersion and Engine Performance Using 1D-3D Co-Simulation

Dimitriou, P., Burke, R., Copeland, C. D. & Akehurst, S., 17 Nov 2015, In : SAE Technical Papers. 2015

Research output: Contribution to journal › Conference article

Exhaust gas recirculation

Engine cylinders

Engines

Air intakes

Turbulence

9 Citations (Scopus)

SuperGen on ultraboost: variable-speed centrifugal supercharging as an enabling technology for extreme engine downsizing

Turner, J. W. G., Popplewell, A., Marshall, D. J., Johnson, T. R., Barker, L., King, J., Martin, J., Lewis, A. G. J., Akehurst, S., Brace, C. J. & Copeland, C. D., 14 Apr 2015, In : SAE International Journal of Engines. 8, 4

Research output: Contribution to journal › Article

Superchargers

Engines

Fuel economy

Crankshafts

Transient analysis

3 Citations (Scopus)

The potential of catalysed exhaust gas recirculation to improve high-load operation in spark ignition engines

Parsons, D., Akehurst, S. & Brace, C., Jun 2015, In : International Journal of Engine Research. 16, 4, p. 592-605

Research output: Contribution to journal › Article

Open Access

File

Exhaust gas recirculation

Internal combustion engines

Gases

Combustion knock

Calorific value

2014

11 Citations (Scopus)

1-D simulation study of divided exhaust period for a highly downsized turbocharged SI engine - scavenge valve optimization

Hu, B., Akehurst, S., Brace, C., Copeland, C. & Turner, J., 1 Apr 2014, In : SAE International Journal of Engines. 7, 3, p. 1443-1452

Research output: Contribution to journal › Article

Engines

Exhaust gases

Turbines

Gases

Combustion knock

4 Citations (Scopus)

A new turboexpansion concept in a twin-charged engine system

Hu, B., Copeland, C., Brace, C., Akehurst, S., Romagnoli, A., Martinez-Botas, R. & Turner, J., 13 Oct 2014, SAE Technical Paper. SAE International, 2014-01-2596

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Engines

Superchargers

Turbines

Compressors

Temperature

8 Citations (Scopus)

Assessment of supercharging boosting component for heavily downsized gasoline engines

Romagnoli, A., Wan-Salim, W. S. I., Gurunathan, B. A., Martinez-Botas, R. F., Turner, J. W. G., Luard, N., Jackson, R., Matteucci, L., Copeland, C., Akehurst, S., Lewis, A. G. J. & Brace, C. J., 1 Jan 2014, Institution of Mechanical Engineers - 11th International Conference on Turbochargers and Turbocharging. Woodhead Publishing Ltd., p. 13-26 14 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Gasoline

Engines

Superchargers

Powertrains

Supercharging

Assessment of the supercharging boosting component for heavily downsized gasoline engines

Copeland, C., Romagnoli, A., Wan-Salim, W. B., Gurunathan, B., Martinez-Botas, R., Turner, J., Luard, N., Jackson, R., Matteucci, L., Brace, C., Akehurst, S. & Lewis, A., 2014, IMECHE Turbocharger and Turbocharging Proceedings, 2014. IMechE Conference Transactions

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Gasoline

Engines

Superchargers

Powertrains

Supercharging

2 Citations (Scopus)

Characterisation of torque converter dampers: A novel method for exciting dampers through torque pulsation generation

Aurora-Smith, A., Akehurst, S., Brace, C., Bannister, C., Wicksteed, B. & Biggs, S., 1 Jan 2014.

Research output: Contribution to conference › Paper

8 Citations (Scopus)

Dynamic modelling of diesel engine emissions using the parametric Volterra series

Burke, R. D., Baumann, W., Akehurst, S. & Brace, C. J., 1 Feb 2014, In : Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 228, 2, p. 164-179 16 p.

Research output: Contribution to journal › Article

Open Access

File

Diesel engines

Engines

Exhaust gas recirculation

Powertrains

Dynamometers

2 Citations (Scopus)

Experimental and analytical investigation of implementing a ball bearing turbocharger on a production diesel engine

Zhang, N., Burke, R. D., Duda, T., Brace, C. J., Akehurst, S., Capon, G., Dowell, P. G. & Davies, P., 13 May 2014.

Research output: Contribution to conference › Paper

Fuel effects in a downsized, highly boosted direct injection spark ignition engine

Campbell, S., Remmert, S., Cracknell, R., Schuetze, A., Warnecke, W., Lewis, A., Akehurst, S., Turner, J. W. G., Patel, R. & Popplewell, A., 2014.

Research output: Contribution to conference › Paper

Model-based Optimal Control of a Hybrid Electric Vehicle Using Stochastic Dynamic Programming

Vagg, C., Akehurst, S., Brace, C. J. & Ash, L., 15 May 2014.

Research output: Contribution to conference › Paper

Hybrid vehicles

Dynamic programming

Controllers

Dynamometers

Chassis

8 Citations (Scopus)

Observations on the Measurement and Performance Impact of Catalyzed vs. Non Catalyzed EGR on a Heavily Downsized DISI Engine

Lewis, A. G. J., Akehurst, S., Turner, J., Patel, R. & Popplewell, A., 1 Apr 2014, In : SAE International Journal of Engines. 7, 1, p. 458-467 10 p., 2014-01-1196.

Research output: Contribution to journal › Article

Exhaust gas recirculation

Engines

Catalysts

Combustion knock

Exhaust gases

Octane appetite: The Relevance of a Lower Limit to the MON Specification in a Downsized, Highly Boosted DISI Engine

Remmert, S., Campbell, S., Cracknell, R., Schuetze, A., Lewis, A., Giles, K., Akehurst, S., Turner, J. W. G., Popplewell, A. & Patel, R., 13 Oct 2014. 13 p.

Research output: Contribution to conference › Paper

Engines

Specifications

Engine cylinders

Combustion knock

Direct injection

26 Citations (Scopus)

Octane Appetite: The Relevance of a Lower Limit to the MON Specification in a Downsized, Highly Boosted DISI Engine

Akehurst, S., Turner, J., Giles, K. & Lewis, A., 30 Nov 2014, In : SAE International Journal of Fuels and Lubricants . 7, 3, p. 743 - 755 13 p., 2014-01-2718.

Research output: Contribution to journal › Article

Open Access

File

Engines

Specifications

Engine cylinders

Combustion knock

Direct injection