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Viewing 1 to 30 of 2123
2015-11-24
Event
2015-10-27
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2015-09-22
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2015-08-25
Event
2015-07-28
Event
2015-06-23
Event
2015-05-26
Event
2015-05-20
Book
This is the electronic format of the Journal.
2015-04-28
Event
2015-04-23
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.
2015-04-23
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.
2015-04-22
Event
In this session speakers will explore the issues and design strategies of bringing sustainable EV, PHEV and vehicle electrification technologies to market. Identifying the customer value of these sustainable technologies is key to their success and growth. The design models and systems presented in this session highlight ways to optimize customer value to make these technologies successful.
2015-04-22
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.
2015-04-22
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.
2015-04-22
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.
2015-04-22
Event
This session covers new production and near-production hybrid powertrains, hybrid architecture, and testing.
2015-04-21
Event
This session deals with the analytical and experimental studies of vehicle electric drive vehicles or any non-conventional vehicle concepts that stretch the vehicle dynamics/mobility performance using intelligent technologies such as in-wheel motors, torque-vectoring controls, multi-wheel steer-by-wire, etc.
2015-04-21
Event
This session covers new production and near-production hybrid powertrains, hybrid architecture, and testing.
2015-04-21
Event
This session covers new production and near-production hybrid powertrains, hybrid architecture, and testing.
2015-04-14
Technical Paper
2015-01-1729
Chenle Sun, Zhe Wang, Zhaolei Yin, Tong Zhang
The linear internal combustion engine-linear generator integrated system is a generating unit with high power density, high efficiency and low emission for the range-extended electric vehicle, which directly transforms the chemical energy of the fuel into the electric energy. The integrated system starts with the linear generator, which shows the advantages of speed and efficiency, as well as the core technology for emission reduction during the starting process and the prerequisite to guarantee the steady operation of the system. This paper focuses on the starting process of the linear internal combustion engine-linear generator integrated system. Pursuant to the starting requirements of the linear internal combustion engine, the starting process that adopts the linear generator as a drive motor is analysed, obtaining the fewest driving cycle and the energy pipeline.
2015-04-14
Technical Paper
2015-01-1687
Eric Wood, Jeremy S. Neubauer, Evan Burton
The disparate characteristics between conventional (CVs) and electric vehicles (EVs) in terms of driving range, refill/recharge time, and availability of refuel/recharge infrastructure inherently limits the relative utility of EVs when benchmarked against traditional driver travel patterns. However, given a high penetration of high power public charging availability combined with driver tolerance for rerouting travel to facilitate charging on long distance trips, the difference in utility between CVs and EVs could be marginalized. Herein we quantify the relationships between EV utility, the deployment of fast chargers, and driver tolerance for rerouting travel and extending travel durations by simulating EVs operated to real-world travel patterns using the National Renewable Energy Laboratory’s (NREL) Battery Lifetime Analysis and Simulation Tool for Vehicles (BLAST-V). Under support from the U.S.
2015-04-14
Technical Paper
2015-01-1686
Takamitsu Tajima, Wataru Noguchi, Tomohisa Aruga
We studied a method for realizing an unlimited driving range for an Electric Vehicle (EV) by supplying power and charging simultaneously while the vehicle is being driven. This method, powering and charging at the same, time mitigates the primary concerns associated with an EV. In addition, we discuss the results of driving tests where we were able to reach an unlimited driving range. The greatest concern attributed to EVs is their short driving range when compared to gasoline vehicles. The direct supply of power to the vehicles from infrastructure during operation has been proposed as one means of addressing this issue. However, if non-contact (wireless) power supply is employed, the realization of this technology is said to require another 100 years.
2015-04-14
Technical Paper
2015-01-1688
Eric Wood, Jeremy S. Neubauer, Evan Burton
With support from the Vehicle Technologies Office in the U.S. Department of Energy, the National Renewable Energy Laboratory (NREL) has developed BLAST-V—the Battery Lifetime Analysis and Simulation Tool for Vehicles. The addition of high resolution spatial-temporal travel histories has enabled BLAST-V to investigate user-defined infrastructure rollouts of publically accessible charging infrastructure, as well as quantify impacts on vehicle and station owners in terms of improved vehicle utility and station throughput. This paper will present simulation outputs from BLAST-V quantifying the utility improvements of multiple distinct rollouts of publically available level 2 electric vehicle service equipment (EVSE) in the Seattle metropolitan area. Publically available data on existing level 2 EVSE will also be used as an input to BLAST-V with resulting vehicle utility compared to a number of mock rollout scenarios.
2015-04-14
Technical Paper
2015-01-1685
Omar Abu Mohareb, Phan-Lam Huynh, Hans-Christian Reuss, Michael Grimm, A. Al-Janabi
This paper addresses the performance and potential of using electric vehicles in the Gulf Arab states. The Research Institute of Automotive Engineering and Vehicle Engines Stuttgart (FKFS) in cooperation with Dhofar University in Salalah has established this research project, where several tests have been performed to study the performance of electric vehicles in the Gulf Arab states in general and in Oman in specific. This will give a deep insight of the electric vehicles use possibilities, in addition to the fuel saving potentials and environmental effects by using both electric vehicles and renewable energy charging stations. A survey with a questionnaire of 30 questions was carried out and distributed over 320 candidates representing population distribution in Salalah.
2015-04-14
Technical Paper
2015-01-0133
Clark Kinnaird
As many automotive functions migrate from purely mechanical to electrically-driven, the use of efficient brushless DC motors is becoming prevalent. This paper discusses the design of a BLDC controller, including the technical tradeoffs, hardware implementation, and testing results. Brushless DC motors are well suited to automotive applications due to their reliability and high efficiency. In applications such as oil pumps, water pumps, and turbo blowers where the motor lifetime and power dissipation are key parameters, these motors solve many design challenges. This design example examines the specific requirements for a compact solution for a water pump, but the design methodology and tradeoffs also apply to other motor control applications where efficient control of motor speed is needed. Like many applications, this design uses sensorless commutation algorithms, reducing cost and size.
2015-04-14
Technical Paper
2015-01-0250
Yanjing Wang, Chao Feng, Guangming Liu, Hong Fu, Shan Xue, Languang Lu, Jianfeng Hua, Minggao Ouyang
In order to reduce driver’s anxiety about range and energy, one direct and effective approach is to offer the remaining driving range based on the vehicle’s states. However, the estimation of the battery’s remaining energy is a key one of all the factors. This paper introduces a experiment-based model for predicting the remaining energy, which considers many factors, such as current, temperature, difference between battery cells, and so on. This approach ensures the accuracy of the remaining driving range. Finally the scheme is validated through the environment space test. Validation results show that this scheme can offer exact remaining energy , which reduces the error of the remaining range greatly.
2015-04-14
Technical Paper
2015-01-1217
Changhong Liu, Lin Liu
Many problems are associated with the large battery operation current, such as battery overheating, lithium plating, and mechanical structural instability of battery materials. All these problems may cause battery safety issues in fuel cell hybrid vehicles (FCHVs), e.g., battery explosions and thermal runaway have been reported and may cause the anxiety of the public about the FCHVs. Previous researches about FCHV power management strategy have focused on minimizing fuel consumption and powertrain cost. More attention needs to put on the battery current constraint for the analysis of battery state of charge (SOC) and battery state of health (SOH). This research targets optimizing the FCHV battery pack operation within a safe current range through power management strategy to increase the safety of the battery pack while improving battery usage via SOC control. Battery SOH is also evaluated in the study.
2015-04-14
Technical Paper
2015-01-1215
George Dixon, Thomas Steffen, Richard Stobart
This paper presents the implementation of a vehicle and powertrain model of the parallel hybrid electric vehicle which can be used for several purposes: as a backwards model for estimating fuel consumption, as a forwards model for estimating performance, and as a control model for the hybrid powertrain optimisation. The model is specified as a multi-domain physical model in MATLAB Simscape, which captures the key electrical, mechanical and thermal energy flows in the vehicles. By applying hand crafted boundary conditions, this model can be simulation either in a forwards or backwards direction, and it can easily be simplified as required to address specific control problems. The model represents a parallel hybrid vehicle in the A-segment, which is being developed in the TC48 project.
2015-04-14
Technical Paper
2015-01-1214
Zhiguo Zhao, Chen Wang, Tong Zhang, Xianjun Dai, Xiyue Yuan
A novel compound power-split hybrid transmission based on a modified Ravigneaux gear set is presented. The equivalent lever diagrams are used to investigate the electric operating mode for the hybrid transmission, and then its dynamic and kinematic characteristics as well as efficiency characteristics in equations are described. A brake clutch mounted on the carrier shaft is proposed to enhance the electric driving efficiency for the hybrid transmission. Three types of electric operating mode are analyzed by the simplified combined lever diagram and the system efficiency and output characteristic for these electric operating modes is compared. A major influence on output torque of the hybrid transmission derived from the torque capability of motors and brake clutch is depicted.
Viewing 1 to 30 of 2123

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