Paweł Krawczyk

Warsaw University of Technology · Department of Multisource Propulsion Systems

Extended-Range Electric Vehicles (EREVs) are intended to improve the range of battery electric vehicles and thus eliminate drivers’ concerns about running out of energy before reaching the desired destination. This paper gives an insight into EREV’s performance operating according to the proposed control strategy over various driving cycles, includ...

Introduction. An Extended-Range Electric Vehicle (EREV) is a type of electric vehicle that uses an additional internal combustion engine (ICE) to charge the battery in order to provide the vehicle with a greater range than in electric only mode. Purpose. Analysis and comparison of the performance of EREV powertrain managed according to three contro...

A range extender is an auxiliary power unit, usually consisting of an internal combustion engine and an electric generator, which is used to charge a battery of an electric vehicle in order to increase its range. This paper considers a range extender supplied with liquefied petroleum gas (LPG). The aim is to provide detailed data on thermal efficie...

In this paper modelling of extended-range electric vehicle powertrain. The model consists of sub-models of the investigated vehicle with its resistance forces, traction electric motor, range extender supplied with alternative fuel, and Li-Ion battery. Working point parameters of the range extender engine were defined to achieve low liquefied petrol...

The study of Li-ion battery based on laboratory tests was presented and analysed taking into consideration various aspects. The tests with different charging and discharging currents were carried out. Moreover, some additional tests with the use of temperature chamber were applied. The results derived from laboratory tests allowed to obtain the cha...

Hybrid power train with planetary transmission equipped with clutch-brake systems, which employ one electric machine, is more effective and more economical than other existing series-parallel hybrid power trains which need two electric machines as motor and generator. This paper presents the control method of zero steady-states electrical energy co...

Samochody hybrydowe, szczególnie typu Plug-in, wymagają zastosowania ekonomicznych i ekologicznych rozwiązań generatorów elektrycznych z silnikami spalinowymi. Jednym z takich rozwiązań może być silnik spalinowy typu Free Piston współpracujący z generatorem liniowym. Zaproponowano model symulacyjny projektu stanowiska badawczego do testowania gener...

In the following paper, the author presents a set of assumptions regarding control strategies of range extender in plug-in hybrid electric vehicle. Particular focus is put on control strategies for range extender with linear generator. Firstly, power train must provide appropriate operation regarding its dynamic behavior. As a dynamic requirement t...

Abstract Ultralight Electric Vehicles with state of the art components are consuming approximately 10 KWh per 100km. Significant cost of lithium-ion battery set results in range that rarely exceeds 200km in test conditions. Range Extended Electric Vehicles are free from this disadvantage. Despite that most popular form of range extender is in-line...

Przekładnia planetarna w napędach pojazdów stosowana jest głównie jako reduktor o dwóch przełożeniach i ma wtedy jeden stopień swobody. Pierwszy wał jest wałem wejściowym, drugi wyjściowym a trzeci jest zahamowany. Gdy przekładnia planetarna pracuje jako przekładnia o dwóch stopniach swobody, można traktować ją jako węzeł sumowania mocy z dwoma wał...

Clutch-brake system is important element in advanced Compact Hybrid Planetary Transmission Drive (CHPTD). The proper designed clutch/brake system equipped with planetary transmission and additional gears could save energy and improve performance of hybrid powertrain, especially during frequent vehicle starting and regenerative braking. This paper d...