Theoretical and experimental control strategies assessment of a Sliding Vane Oil Pump

Fatigati, Fabio; Bartolomeo, Marco Di; Biundo, G Lo; Pallante, Francesco; Cipollone, Roberto

doi:10.1051/e3sconf/202019706022

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…The flow rate variation can be achieved varying the volume capability [8], acting on pump eccentricity, or changing the revolution speed, [9]. Nonetheless the robustness of the former regulation strategy, the latter ensure to achieve higher efficiency avoiding flow recirculation at sealing arc, [10].…”

Section: Introductionmentioning

confidence: 99%

Model-based optimization of Sliding Rotary Vane Pump for internal combustion engine cooling of heavy-duty vehicles

Fatigati

Bartolomeo²,

Pallante³

et al. 2022

J. Phys.: Conf. Ser.

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The reduction of CO2 and pollutant emissions of internal combustion engines (ICEs) keeping their performance close to the expectations is the main driver of the research in the transportation sector. To counteract the global warming issues international governments set strict emission limitations foreseeing severe penalties for exceeding them. The vehicle electrification surely helps to match these stringent requirements, but a net CO2 reduction can be achieved only if the electricity from the grid has low carbon content. This is not the case of most part of the Countries where the fossil fuels are still the main sources of electric energy production. Thus, considering also the still higher cost of the electric vehicles, the technological improvement of ICEs assumes a strategic importance in this transition period. Among the possible interventions ensuring to achieve this aim, the efficiency enhancement of ICE cooling pump is one of the most effective. As matter of fact, it is proven that the replacement of conventional centrifugal pump with Sliding Rotary Vane Pumps (SVRPs) lead to an interesting decrease of fuel consumption and CO2 emissions. Nevertheless, the design of this machines is not straightforward due to the complex thermo-fluid-dynamic phenomena taking place inside their chambers. This aspect is even more critical for wide operating range as in the case of heavy-duty vehicles. Here, high pump revolution speeds could be provided to satisfy the flow rate requirements thus involving efficiency deterioration due to friction losses enhancement. Therefore, to reduce the revolution speed needed by the pump to elaborate the required flow rate, a novel design strategy based on the enhancement of volumetric capability is presented. The pump resulting by this design approach was called Low Speed LS pump which was prototyped and experimentally characterized over a wide set of operating conditions. The indicated cycle was also measured to better assess the fluid-dynamic behaviour of the machine. The experimental results show a maximum efficiency close to 60% in accordance with the best literature results.

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Section: Introductionmentioning

confidence: 99%

Model-based optimization of Sliding Rotary Vane Pump for internal combustion engine cooling of heavy-duty vehicles

Fatigati

Bartolomeo²,

Pallante³

et al. 2022

J. Phys.: Conf. Ser.

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show abstract

“…Harrison et al [16] developed a CFD-1D model showing good performances in terms of accuracy and computational cost. A similar model has been used also by the authors for the evaluation of the best control strategies [17] to control the flowrate. A different approach has been used in [18], where a deterministic model has been built which was able to reproduce the flowrate of a variable displacement vane pump with an accuracy between 1% and 7 % depending on its rotational speed.…”

Section: Introductionmentioning

confidence: 99%

On the optimal design of sliding rotary vane pump for heavy-duty engine cooling systems

et al. 2021

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Presently the on-the-road transportation sector is responsible of the 21% of the whole CO2 amount emitted into atmosphere. This pushes the International Governments and Organizations to provide strict limitations in terms of ICEs emissions, also introducing fees payment for the car manufacturers. The vehicle electrification allows certainly to meet these requirements, but the higher cost and the need of a green electricity still limit a widespread diffusion among all social classes. Thus, the technological improvement of internal combustion engine plays a key role in the transition period. Among these technologies, the engine thermal management allows to achieve a good compromise between the CO2 emission reduction and related costs. It was demonstrated that replacing the conventional centrifugal pump of engine cooling system with a sliding vane rotary pump (SVRP), important benefits in terms of CO2 emission reduction can be achieved as centrifugal pump efficiency decreases significantly when the engine works far from the maximum load (i.e. design point of the pump). Nevertheless, the complex thermo-fluid-dynamic phenomena taking place inside a SVRP make its design not immediate, particularly if heavy duty ICE cooling systems are considered. These applications indeed are challenging due to the wide operating range and the huge flow rates which pump must deliver. These operating requirements make difficult the choice of the main design parameters: among the different ones, the pump revolution speed and displaced volume. In the present paper a design strategy is developed for this type of pumps based on a comprehensive mathematical model of the processes occurring, predicting volumetric, indicated and mechanical efficiencies. The model was validated with a wide experimental activity so acting as virtual development platform. The results show how the best global efficiency (0.59) is achieved adopting a dual axial intake port configuration, with a suitable choice result of a trade-off between displaced volume and revolution speed. The analysis also show that the pump keeps its efficiency close to the design one for a wide operating range which is particularly suitable for the cooling of an ICE.

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Model based control of the inlet pressure of a sliding vane rotary expander operating in an ORC-based power unit

Fatigati

Bartolomeo

Battista

et al. 2021

Applied Thermal Engineering

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Theoretical and experimental control strategies assessment of a Sliding Vane Oil Pump

Cited by 6 publications

References 12 publications

Model-based optimization of Sliding Rotary Vane Pump for internal combustion engine cooling of heavy-duty vehicles

Model-based optimization of Sliding Rotary Vane Pump for internal combustion engine cooling of heavy-duty vehicles

On the optimal design of sliding rotary vane pump for heavy-duty engine cooling systems

Model based control of the inlet pressure of a sliding vane rotary expander operating in an ORC-based power unit

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