Modeling and experimental validation of a triple-screw pump for internal combustion engine cooling

Giovine, Giammarco Di; Mariani, Luigi; Battista, Davide Di; Cipollone, Roberto; Fremondi, Fabrizio

doi:10.1016/j.applthermaleng.2021.117550

Cited by 19 publications

(24 citation statements)

References 32 publications

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“…Adding to indicated power the mechanical power lost due to dry and viscous friction effects the mechanical power (on the shaft) can be evaluated (6). The power lost due to friction is quite coincident with the power lost due the dry contact between blade tip and stator inner surface represented by equation ( 7):…”

Section: Figure 2 Leakages Paths In Svrpmentioning

confidence: 99%

“…In the considered case, the higher efficiency of SVRPs leads to a fuel consumption reduction of 0.4 g/km corresponding to a CO2 reduction comprised between 1 and 1.5 gCO2/km [5] Besides SVRPs, also other volumetric technologies such as Triple Screw Pumps (TSPs) guarantee similar benefits. In [6] it was found that a TSP specifically designed for a heavy-duty vehicle cooling application allows to reach an energy saving of 18.5% with respect to a reference centrifugal pump.…”

Section: Introductionmentioning

confidence: 99%

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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: Figure 2 Leakages Paths In Svrpmentioning

confidence: 99%

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.

View full text Add to dashboard Cite

show abstract

“…The cooling pumps under investigation are a centrifugal and a screw-type volumetric pump. These pumps have been optimized and designed through a model-based design approach [36,37], which has been possible thanks to the corresponding mathematical models capable to predict their performances previously developed by the authors in [39,40,41]. A schematic of the model-based design procedure followed to develop the centrifugal pump proposed in this paper is represented in Figure 1.…”

Section: Model-based Pump Designmentioning

confidence: 99%

Comparison on the energy absorbed of volumetric and centrifugal pumps for automotive engine cooling

Giovine

Mariani

Bartolomeo

et al. 2022

J. Phys.: Conf. Ser.

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Engine thermal management can reduce significantly CO2 emissions in road vehicles without altering sensibly the engine layout. However, more efficient auxiliaries also participate to fuel consumption saving and, therefore, to CO2 emissions reduction. Typically, centrifugal cooling pumps are adopted as circulating devices, but their efficiency varies highly with rotational speed, wasting energy during real operation despite being optimized at the design point. Instead, volumetric pumps keep a high efficiency also far from it, enhancing the overall engine efficiency. In this paper, the performances of a screw-type volumetric pump have been compared with those of a centrifugal pump considering the same cooling circuit of a mid-size engine for passenger vehicles. Both pumps have been designed to satisfy the cooling flow rate required by the engine during a homologation cycle, while verifying their capability to cool the engine operating at maximum power. Once prototyped, the pumps performance maps have been measured, showing a high Best Efficiency Point for both cases. However, the screw pump has better performance in off-design conditions, being the centrifugal pump efficiency strictly dependent on its rotational speed which significantly changes during a real driving. The comparison of the two pumps has been done by reproducing the WLTC on a dynamic test bench. The rotational speed of the volumetric pump has been adjusted to deliver the same flow rate produced by the centrifugal pump as requested by the engine. Results show that the prototyped screw-type volumetric pump absorbs 21% less energy than the prototyped centrifugal pump, reducing CO2 emissions by 0.28 g/km.

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“…Screw pumps are a type of volumetric pump that is frequently utilized in the industrial and oil and gas industries [8][9][10][11]. They outperform other types of pumps in these applications in terms of efficiency, head capacity, and reliability.…”

Section: Introductionmentioning

confidence: 99%

Analysis on Auger Pump Performance During Handling High Viscous Liquid

Alisha

Najwa²,

Jamaludin³

et al. 2022

JMMST

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Viscosity is one of the factors affecting the performance of the auger pump. An auger pump is positive-displacement (PD) pump that moves fluids and semi-solid material along the screw axis using one or more screws. The study is about the analysis of the performance of the auger pump when transferring various viscosity liquids. In the study, a pumping device with auger shaft is designed. The sample liquids chosen for the experiment oil and concentrated detergent that poses various viscosity. The viscosity is being identified roughly by Zahn Cup Method with the temperature kept constant at 26°C throughout the measurement. The performance of the auger pump can be accessed by altering the motor speed in order to get various reading for the flow rate and pressure. It is found in the study; flowrate is affected by viscosity with the increasing motor speed. The study proves that the auger pump can operate with viscosity of 770 cSt liquid.

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Modeling and experimental validation of a triple-screw pump for internal combustion engine cooling

Cited by 19 publications

References 32 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

Comparison on the energy absorbed of volumetric and centrifugal pumps for automotive engine cooling

Analysis on Auger Pump Performance During Handling High Viscous Liquid

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