Flow in the engine compartment: analysis and optimisation

D’Hondt, M.; Gilliéron, Patrick; Devinant, Philippe

doi:10.1504/ijad.2011.038852

Cited by 4 publications

(1 citation statement)

References 12 publications

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“…These results are consistent with recent studies reported in the literature. [35][36][37] From the known drag effects by radiator size according to the cooling module proposals, a virtual analysis of fuel consumption on the FTP-75 + HWFET driving cycle is presented in Figure 16. It shows that the proposal P3 has the highest accumulated fuel consumption at the end of the driving cycle, followed by P2, P1, and the baseline configuration.…”

Section: Effects Of Radiator Size and Fan Power On Vehicle Fuel Consumptionmentioning

confidence: 99%

Thermal management of an internal combustion engine focused on vehicle performance maximization: A numerical assessment

Thomaz

Malaquias

Paula

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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In extreme ambient conditions, engine temperature and air charge temperature (ACT) can be so high that they compromise the vehicular performance. To preserve the structural engine reliability, it is necessary to reduce the load through an increase in the engine speed to maintain the power output, which minimizes fuel conversion efficiency degradation. However, high engine speeds also lead to enhanced friction losses and combustion frequency, which reduces the engine thermal efficiency. Therefore, this work seeks to numerically study the best thermal management strategy to minimize performance losses arising from an engine power derate strategy, while also optimizing the design of a cooling system to withstand extreme engine stress conditions, characteristics of the Davis Dam tests. Different radiator lengths and fan power were numerically simulated to conclude about the most influential parameter on fuel consumption in the FTP-75 + HWFET cycle. The results showed positive effects from the engine power derate strategy, and the engine speed control was able to mitigate up to 23% derate by cooling temperature. There was a 0.8% increase in fuel consumption for every 2.5% aerodynamic drag coefficient increase, which reinforces the need to perform robust thermal management procedures instead of oversizing a vehicular cooling system for high-load operation.

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Section: Effects Of Radiator Size and Fan Power On Vehicle Fuel Consumptionmentioning

confidence: 99%

Thermal management of an internal combustion engine focused on vehicle performance maximization: A numerical assessment

Thomaz

Malaquias

Paula

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Analysis on the waste heat recovery in a light duty vehicle

Galloni

2022

Energy

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Experimental study of the effects of a particle filter in front of automotive radiator on its cooling performances and cooling drag

Montaigne,

Chalet,

Bouedec

et al. 2024

Advances in Mechanical Engineering

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According to the World Health Organization (WHO), air pollution is the single greatest worldwide health risk especially in urban environments. In these areas, the vehicle traffic significantly contributes to the fine dust concentration in the ambient air. While the current legislation focuses mainly on the exhaust emission of vehicles, 85% of the overall fine dust emissions originating from brakes, tires, and road abrasion are not yet regulated. In this context, an integrated particulate filter system fitted into previously unused installation spaces in frontend of a vehicle in front of the radiator allows to compensate a part of the particle emissions of a vehicle try to reach the neutral emission. Add filter is not without consequences for the cooling performances. This study aims to assess the impact of the particulate filter system on the radiator cooling performances and cooling drag coefficient. An experimental setup was developed to characterize an automotive radiator with and without particle filter in terms of power and velocity distribution. Cooling capacity of the radiator depends clearly of the airflow through the radiator. Filter increases the pressure drop and decreases airflow. Hence, the heat power exchange can be reduced up to 10% for a pressure drop level almost twice. The airflow inlet inside engine compartment is not beneficial for aerodynamic aspect. By increasing pressure drop, the cooling drag coefficient can be reduced up to 10% when a filter covers entirely the radiator surface. The results indicate that the filter affects the cooling capacity of the radiator, which can require modifications to the cooling system strategy.

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Flow in the engine compartment: analysis and optimisation

Cited by 4 publications

References 12 publications

Thermal management of an internal combustion engine focused on vehicle performance maximization: A numerical assessment

Thermal management of an internal combustion engine focused on vehicle performance maximization: A numerical assessment

Analysis on the waste heat recovery in a light duty vehicle

Experimental study of the effects of a particle filter in front of automotive radiator on its cooling performances and cooling drag

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