Battery operated electric vehicles (BEVs) offer the opportunity of running a zero-emission car fleet. However, due to their current range constraints, electric vehicle operations are mainly attractive for inner-city transport, such as the taxi business. This paper is bringing together facts and assumptions about Berlin’s taxi transport and the current conditions of BEVs in Germany to provide th...

In this study, electric-drive vehicles with series powertrains were configured to utilize a lithiumion battery of very high power and achieve sport-sedan performance and excellent fuel economy. The battery electrode materials are LiMn2O4 and Li4Ti5O12, which provide a cell area-specific impedance of about 40% of that of the commonly available lithium-ion batteries. Data provided by EnerDel Corp...

Policymakers, consumers and manufacturers are all agreed – the auto industry needs to adopt electrification to address climate change and dwindling natural resources – yet we still see very few hybrid and electric vehicles on the road today. Given the will is there, why the lack of adoption? In reality the main reason is not the technology, but rather the cost of developing the technology in th...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Antti Lajunen Name of the doctoral dissertation Improving the Energy Efficiency and Operating Performance of Heavy Vehicles by Powertrain Electrification Publisher School of Engineering Unit Department of Engineering Design and Production Series Aalto University publication series DOCTORAL DISSERTATIONS 125/2014 Field of resea...

This is the second paper in a series of two that describe our research in intelligent energy management in a hybrid electric vehicle (HEV). Energy management in Hybrid Electric Vehicles (HEV) has been actively studied recently because of its potential to significantly improve fuel economy and emission control. Because of the dual-power-source nature and the complex configuration and operation m...

The paper present’s a survey of the wheel vehicles drives with electric and hybrid drive system. For electric and hybrid vehicle applications, wheels motor and magnetic circuits cutting motor drives, represented a new attractive solution for their lightness and compactness. The wheels are directly driven by the electric motor, and the gears are not necessary anymore. An alternating solution of ...

(HEVs) have existed since before 1900 (Figure 1), interest in these vehicles has grown substantially only in the last 15–20 years. The main reason for this interest is the expectation that HEVs represent a short-term approach to improving fuel efficiency and reducing pollutant emissions of automobiles. In internal-combustion-engine (ICE) systems, the mechanical power needed to drive the vehicle...

This paper proposes a framework to perform design optimization of a series PHEV and investigates the impact of using real-world driving inputs on final design. Real-World driving is characterized from a database of naturalistic driving generated in Field Operational Tests. The procedure utilizes Markov chains to generate synthetic drive cycles representative of real-world driving. Subsequently,...