10th International Conference on Turbochargers and Turbocharging : 15-16 May 2012, Savoy Place, London

This book presents the papers from the latest international conference, following on from the highly successful previous conferences in this series held regularly since 1978. Papers cover all current and novel aspects of turbocharging systems design for boosting solutions for engine downsizing. The focus of the papers is on the application of turbocharger and other pressure charging devices to spark ignition (SI) and compression ignition (CI) engines in the passenger car and commercial vehicles. Novel boosting solutions for diesel engines operating in the industrial and marine market sectors are also included. The current emission legislations and environmental trends for reducing CO2 and fuel consumption are the major market forces in the transport (land and marine) and industry sectors. In these market sectors the internal combustion engine is the key product where downsizing is the driver for development for both SI and CI engines in the passenger car and commercial vehicle applications. The more stringent future market forces and environmental considerations mean more stringent engine downsizing, thus, novel systems are required to provide boosting solutions including hybrid, electric-motor and exhaust waste energy recovery systems for high efficiency, response, reliability, durability and compactness etc. For large engines the big challenge is to enhance the high specific power and efficiency whilst reducing emission levels (Nox and Sox) with variable quality fuels. This will require turbocharging systems for very high boost pressure, efficiency and a high degree of system flexibility. Presents papers from all the latest international conference Papers cover all aspects of the turbocharging systems design for boosting solutions for engine downsizing The focus of the papers is on the application of turbocharger and other pressure charging devices to spark ignition (SI) and compression ignition (CI) engines in the passenger car and commercial vehicles Content: Front matter, Pages i-iii Copyright, Page iv Your Global Technology Partner, Page xi HyBoost – An intelligently electrified optimised downsized gasoline engine concept, Pages 3-14 Turbo-Discharging for improved engine torque and fuel economy, Pages 15-23 Boost system selection for a heavily downsized spark ignition prototype engine, Pages 27-41 R2STM – modelling and consequences for the boost control, Pages 43-53 Application of two stage turbocharging systems on large engines, Pages 55-69 A new approach to thermo mechanical fatigue shown on turbocharger housings, Pages 73-82 On the influence of thermal boundary conditions on the Thermo Mechanical Analysis of turbine housing of a turbocharger, Pages 83-95 Compressor wheel low cycle fatigue calculations for off highway applications – an approach to accurately calculate application duty cycle, Pages 97-107 Variable trim compressor – a new approach to variable compressor geometry, Pages 111-120 Design optimisation of an impeller with CFD and Meta-Model of optimal Prognosis (MoP), Pages 121-134 Development of advanced centrifugal compressor for turbocharger, applying control of internal unsteady flow structure, Pages 135-144 Shaft coking resolution using multiple variable bearing system design optimization for commercial vehicle turbochargers, Pages 147-157 Advanced rotordynamic simulation of turbochargers using coupled multibody and finite element models, Pages 159-171 Turbocharger blade vibration: Measurement and validation through laser tip-timing, Pages 173-181 On wide mapping of a mixed flow turbine with regard to compressor heat flows during turbocharger testing, Pages 185-202 Turbocharger matching methodology for improved exhaust energy recovery, Pages 203-218 Experimental investigation under unsteady flow conditions on turbocharger compressors for automotive gasoline engines, Pages 219-229 Development of a common dual axle VNTTM for single- and two-stage off-highway applications, Pages 233-241 An experimental assessment of the effects of stator vane clearance location on an automotive turbocharger turbine, Pages 243-255 Testing turbine expanders for high efficiency diesels, Pages 257-265 The role of turbocompound in the era of emissions reduction, Pages 269-280 Characterization of a low pressure turbine for turbocompounding applications in a mild-hybrid gasoline engine, Pages 281-293 The transient response of turbocharger turbines, Pages 295-304 Performance of a small-size two-stage centrifugal compressor, Pages 307-318 Effect of diffuser width and tip clearance on the static pressure distributions in a vaneless diffuser of a high-speed centrifugal compressor, Pages 319-324 Experimental and numerical analysis of a classical bleed slot system for a turbocharger compressor, Pages 325-341 Dual boost compressor development, Pages 345-355 Electrically driven supercharger using the TurboClaw® compressor for engine downsizing, Pages 357-363 Development of new turbocharger technologies for energy efficiency and low emissions, Pages 365-374 Experimental investigation on the effect of pulsations on exhaust manifold-related flows aiming at improved efficiency, Pages 377-387 A comparison of timescales within a pulsed flow turbocharger turbine, Pages 389-404 Experimental analysis of turbocharger interaction with a pulsatile flow through time-resolved flow measurements upstream and downstream of the turbine, Pages 405-415 Reduced model for the radial turbine based on proper orthogonal decomposition, Pages 419-427 Unsteady flow-based aeroacoustics analysis in centrifugal compressor, Pages 429-439 Author Index, Pages 440-443 This book presents the papers from the latest international conference, following on from the highly successful previous conferences in this series held regularly since 1978. Papers cover all current and novel aspects of turbocharging systems design for boosting solutions for engine downsizing. The focus of the papers is on the application of turbocharger and other pressure charging devices to spark ignition (SI) and compression ignition (CI) engines in the passenger car and commercial vehicles. Novel boosting solutions for diesel engines operating in the industrial and marine market sectors are also included.

The current emission legislations and environmental trends for reducing CO2 and fuel consumption are the major market forces in the transport (land and marine) and industry sectors. In these market sectors the internal combustion engine is the key product where downsizing is the driver for development for both SI and CI engines in the passenger car and commercial vehicle applications. The more stringent future market forces and environmental considerations mean more stringent engine downsizing, thus, novel systems are required to provide boosting solutions including hybrid, electric-motor and exhaust waste energy recovery systems for high efficiency, response, reliability, durability and compactness etc. For large engines the big challenge is to enhance the high specific power and efficiency whilst reducing emission levels (Nox and Sox) with variable quality fuels. This will require turbocharging systems for very high boost pressure, efficiency and a high degree of system flexibility.

• Presents papers from all the latest international conference
• Papers cover all aspects of the turbocharging systems design for boosting solutions for engine downsizing
• The focus of the papers is on the application of turbocharger and other pressure charging devices to spark ignition (SI) and compression ignition (CI) engines in the passenger car and commercial vehicles

This book presents the papers from the latest international conference, following on from the highly successful previous conferences in this series held regularly since 1978, last held May 2010, in London.