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Viewing 1 to 30 of 2110
2016-11-22
Event
2016-10-25
Event
2016-10-24
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-09-27
Event
2016-08-23
Event
2016-07-26
Event
2016-06-28
Event
2016-05-24
Event
2016-04-26
Event
2016-04-14
Event
This session covers powertrain control processes related to achieving stringent market fuel economy, emissions, performance, reliability, and quality demands of hybrid and electric powertrains. Topics include the control, calibration, and diagnostics of the engine, powertrain, and supporting electromechanical subsystems related to energy management.
2016-04-14
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-14
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-04-14
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-04-13
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-04-13
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-13
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-13
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-04-12
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-12
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-05
Technical Paper
2016-01-1055
Ashwini Agarwal, Andrew Lewis, Sam Akehurst, Chris Brace, Yash Gandhi, Gary Kirkpatrick
Range extended electric vehicles (REEV) are gaining popularity due to their simplicity, reduced emissions and fuel consumption when compared to parallel or series/parallel hybrid vehicles. The range extender ICE can be optimised to a number of steady state points which offers significant improvement in overall exhaust emissions. One of the key challenges in such vehicles is to reduce the overall powertrain costs, and OEMs providing REEVs such as the BMW i3 have included the range extender as an optional extra due to increasing costs on the overall vehicle price. This paper discusses the development of a low cost auxiliary power unit (APU) for the range extender application utilising a well optimised production automotive two cylinder gasoline engine. The 624 cc production engine was further optimised given the project constraints of low cost changes to suit a range extender application.
2016-04-05
Technical Paper
2016-01-1177
Aditya Dhand, Keith Pullen
There are different types of energy storage devices which are used in today’s hybrid and electric vehicles. Batteries, ultra capacitors and high speed flywheels are the most commonly used ones. While batteries and supercapacitors store energy in the form of electric energy, the flywheel (FW) is the only device that keeps the energy stored in the original form of mechanical energy the same as the moving vehicle. The flywheel needs to be coupled to the driveshaft of the vehicle in a manner which allows it to vary its speed independently of the moving vehicle in order to vary its energy content. In other words a continuously variable transmission (CVT) is needed. The common mechanical variators used in automotive applications, namely the rolling traction drives and the belt drives, have the disadvantage that their speed ratio range defined as the maximum to minimum speed ratio is generally not sufficient for flywheel energy storage system (FESS).
2016-04-05
Technical Paper
2016-01-1221
Kiyoshi Ito, Takumi Shibata, Takashi Kawasaki
Drive motors such as for hybrid vehicles and electric vehicles require windings that can endure use at high voltages. The winding is the main part for which insulation needs to be assured in the motor operating environment. In addition, consideration should also be given to insulation damage during molding. Conventional motors generally secure insulation by using the two parts of the winding and insulating paper to assure insulation. However, this increases the motor space factor and hinders size reduction. A new high-voltage winding formed by molding extruded resin onto an enamel insulating layer was developed to reduce the number of insulating parts and enhance motor performance. Extrusion molding of polyetheretherketone (PEEK) resin onto an insulating layer realized a winding that can withstand the molding load during motor manufacture, secures durability for the automobile motor operating environment and can maintain high-voltage characteristics.
2016-04-05
Technical Paper
2016-01-1235
Johannes Gragger, Alessandro Zanon, Michele De Gennaro, Jonathan Juergens, Antonio Fricassè, Luca Marengo, Igor Olavarria, Jutta Kinder
The widespread of hybrid and battery electric vehicles is vital for the future low-carbon mobility. In this context the delivery of affordable and efficient electric motor technologies together with high energy density storage devices are key aspects to enable the mass market take-off of electrified vehicles. The objective of this paper is to provide the scientific community with the results and design features of an innovative and rare-earth free electric motor technology based on the synchronous reluctance machine concept. This technology is capable to provide sufficient power density and higher driving cycle energy efficiency compared to the current state-of-the-art rare-earth permanent magnet synchronous machines used for automotive applications. The motor is designed to be integrated within a hatchback rear driving axle vehicle, achieving the maximum energy efficiency in urban operational conditions.
2016-04-05
Technical Paper
2016-01-1237
Vaheed Nezhadali, Lars Eriksson
Increasing legislative demands for the reduction of emissions and also the ever-growing interest for fuel consumption reduction in the automotive industry encourages the development of new technologies in the automotive industry such as powertrain hybridization. However, existence of an electric power source in addition to the traditional internal combustion engine in the powertrain opens up the space for innovations and improvement in the control of transmission systems. In heavy duty applications such as trucks, gearshifting can be performed using engine torque control techniques and automated manual transmission (AMT) systems. For this, during a gearshift, engine torque is reduced to zero in order to synchronize the speed on the input and output sides of the transmission. However, in case of a heavily loaded truck going uphill, the zero torque periods can result in engine stall after the gearshift considering engine acceleration limitations.
2016-04-05
Technical Paper
2016-01-1243
Roberto Finesso, Ezio Spessa, Mattia Venditti
An unsupervised machine-learning technique aimed at the identification of the optimal rule-based control strategy has been developed for a complex not-plug-in hybrid electric vehicle. The approach is based on a preliminary identification of the optimal control strategy, which is carried out by means of a benchmark optimizer, based on the deterministic dynamic programming technique, for different driving scenarios. The optimization is carried out by selecting the optimal values of the control variables (i.e., transmission gear and power flow) in order to minimize fuel consumption, and taking into account several constraints in terms of NOx emissions, battery state of charge and battery life consumption. The results of the benchmark optimizer are then processed with the aim of extracting a set of optimal rule-based control strategies, which can be implemented onboard in real-time.
Viewing 1 to 30 of 2110

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