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Wyświetlanie 1-2 z 2
Tytuł:
The dynamics the assembly including light trailer : vehicle with combustion engine or hybrid driving
Autorzy:
Siczek, K.
Wituszyński, K.
Powiązania:
https://bibliotekanauki.pl/articles/243025.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
plug-in hybrid electric vehicle
light trailer
dynamics
Opis:
The rising greenhouse gas emissions at a global level have caused the increasing interest in cleaner and less oildependent transportation sources. It has been carried out a lot of researches on the alternative energy sources, like biofuels, fuel cells, wind farms, etc. and on the clean vehicles (hybrids). Most major manufacturers have successfully introduced hybrid automobiles utilizing electric motors and an internal combustion engine to improve their gas mileage. To decrease the use of gasoline even further, some hybrids are being retrofitted to allow them to be pluggedinto a standard i.e. 120-volt socket to charge the batteries and potentially to provide power back to the electric grid when needed. Plug-in Hybrid Cars offer the fuel-efficiency benefits of hybrid cars with the added feature of being able to plug-in to household electricity during rest. This allows the increased mileage and fuel savings. Plug-ins requires larger batteries than normal hybrids, which drives up their cost. Lithium-ion batteries are smaller, have a higher output of energy but are more expensive than rechargeable nickel metal hydride (NiMh), still used in hybrid vehicles. Improvement in battery storage capacity is of the most importance for the plug-ins. Plug-in technology is developed by the major auto manufacturers, with working prototypes of both plug-in hybrid electric vehicles (PHEV) and plug-in electric vehicles possessing small backup gas generators. The aim of the paper has been to assess the dynamic performance characteristics of the assembly light trailer - car with classic combustion engine (in the first case) or PHEV (in the second case), using mathematical models and numerical simulations of standard driving cycles and to investigate algorithms for charging the stock battery pack.
Źródło:
Journal of KONES; 2014, 21, 1; 249-257
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-parametric and multi-objective thermodynamic optimization of a spark-ignition range extender ICE
Autorzy:
Toman, R.
Brankov, I.
Powiązania:
https://bibliotekanauki.pl/articles/243112.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Range Extender
hybrid electric vehicle
battery electric vehicle
internal combustion engine
spark ignition
thermodynamic optimization
genetic algorithm
Opis:
The current legislation pushes for the increasing level of vehicle powertrain electrification. A series hybrid electric vehicle powertrain with a small Range Extender (REx) unit – comprised of an internal combustion engine and an electric generator – has the technical potential to overcome the main limitations of a pure battery electric vehicle: driving range, heating, and air-conditioning demands. A typical REx ICE operates only in one or few steady-states operating points, leading to different initial priorities for its design. These design priorities, compared to the conventional ICE, are mainly NVH, package, weight, and overall concept functional simplicity – hence the costeffectiveness. The design approach of the OEMs is usually rather conservative: parting from an already-existing ICE or components and adapting it for the REx application. The fuel efficiency potential of a one-point operation of the REx ICE is therefore not fully exploited. This article presents a multi-parametric and multi-objective optimization study of a REx ICE. The studied ICE concept uses a well-known and proven technology with a favourable production and development costs: it is a two-cylinder, natural aspirated, port injected, four-stroke SI engine. The goal of our study is to find its thermodynamic optimum and fuel efficiency potential for different feasible brake power outputs. Our optimization tool-chain combines a parametric GT-Suite ICE simulation model and modeFRONTIER optimization software with various optimization strategies, such as genetic algorithms, gradient based methods or various hybrid methods. The optimization results show a great fuel efficiency improvement potential by applying this multi-parametric and multi-objective method, converging to interesting short-stroke designs with Miller valve timings.
Źródło:
Journal of KONES; 2018, 25, 3; 459-466
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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