Experimentally Based Methodology to Evaluate Fuel Saving and
                        CO
&lt;sub&gt;2&lt;/sub&gt;
 Reduction of Electrical Engine Cooling Pump during Real
                    Driving

Bartolomeo, Marco Di; Battista, Davide Di; Cipollone, Roberto

doi:10.4271/03-16-05-0041

Cited by 4 publications

(2 citation statements)

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“…in terms of sizing and control strategy could reduce the final fuel consumption and produce benefits during the warm-up phase and thermal optimization of the engine, also reducing pollutant emissions (Di Bartolomeo et al, 2023). An electric control strategy of the pump would be beneficial in this regard despite increasing the battery and alternator load.…”

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confidence: 99%

Editorial: New developments in vehicle thermal management

2023

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The role of transportation is essential in meeting international targets for increasing energy efficiency and reducing fossil fuel consumption. Thermal engines still dominate the propulsion systems of vehicles, making it imperative to improve their efficiency during the transition to more sustainable systems powered by green electricity and hydrogen.Among the various technologies being developed to achieve these goals, thermal management stands out as a cost-effective option. It proves to be appealing not only for traditional vehicles with thermal engines but also for hybrid and electric vehicles. This Research Topic aims to showcase the latest innovations in technologies, components, layouts, control management, and vehicle cabin conditioning. Thermal management options also encompass opportunities for energy recovery, which can significantly enhance the overall efficiency of vehicles. Furthermore, the integration of cabin conditioning and auxiliary systems into the vehicle's thermal management is relevant not only for traditional vehicles but also for hybrid, electric, and hydrogen-fueled vehicles and transportation means.In particular, this Research Topic in Frontiers of Mechanical Engineering contains four papers, including one review and three research articles, supplied by researchers from six countries. These papers cover broad areas, including recent advances in hybrid and electric vehicles lubrication and thermal management, waste heat recovery, thermal energy storages and the estimation of power demand of auxiliaries.Indeed, auxiliary engine loads have become a critical factor affecting powertrain performance and fuel economy. This is true both for thermal engines and for hybrid and electrified ones. In this regard, air conditioning, alternators, water pump and steering pump are the components that cannot be neglected. For a medium car (about 100 hp power), the contribution of the auxiliary loads can be more than 17% of the brake power (Gajanayake et al.), and it depends significantly on the operating and environmental conditions. Air conditioning systems usually consist of refrigerating units, where the compressor is driven by a belt linked to the engine crankshaft. During summer, the power absorbed can be significantly high when the cabin temperature approaches 40 °C or at low vehicle speeds, reducing the cooling of the condenser placed in the front end of the vehicle (Askar et al., 2023). Even the alternator is an energy-consuming component, and the progressive electrification of the vehicles claims for even more efficient electrical machines. The coolant pump is usually always active during the vehicle run since it has the fundamental role of delivering the coolant fluid to the engine and the other components of the powertrain, such as batteries, electronics and heater cores. The temperature control of these auxiliary components, which play a crucial role in the proper functioning of the vehicle, requires the coolant pump to be highly reliable, usually resulting in a general overdesign of this compo...

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confidence: 99%

Editorial: New developments in vehicle thermal management

2023

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“…component. Hence, its optimization in terms of sizing and control strategy could reduce the final fuel consumption and produce benefits during the warm-up phase and thermal optimization of the engine, also reducing pollutant emissions (Di Bartolomeo et al, 2023). An electric control strategy of the pump would be beneficial in this regard despite increasing the battery and alternator load.…”

mentioning

confidence: 99%

Editorial: New developments in vehicle thermal management

Battista¹,

Bartolomeo²,

Fatigati³

2023

Front. Mech. Eng.

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Editorial on the Research Topic New developments in vehicle thermal managementThe role of transportation is essential in meeting international targets for increasing energy efficiency and reducing fossil fuel consumption. Thermal engines still dominate the propulsion systems of vehicles, making it imperative to improve their efficiency during the transition to more sustainable systems powered by green electricity and hydrogen.Among the various technologies being developed to achieve these goals, thermal management stands out as a cost-effective option. It proves to be appealing not only for traditional vehicles with thermal engines but also for hybrid and electric vehicles. This Research Topic aims to showcase the latest innovations in technologies, components, layouts, control management, and vehicle cabin conditioning. Thermal management options also encompass opportunities for energy recovery, which can significantly enhance the overall efficiency of vehicles. Furthermore, the integration of cabin conditioning and auxiliary systems into the vehicle's thermal management is relevant not only for traditional vehicles but also for hybrid, electric, and hydrogen-fueled vehicles and transportation means.In particular, this Research Topic in Frontiers of Mechanical Engineering contains 4 papers, including 1 review and 3 research articles, supplied by researchers from 6 countries. These papers cover broad areas, including recent advances in hybrid and electric vehicles lubrication and thermal management, waste heat recovery, thermal energy storages and the estimation of power demand of auxiliaries.Indeed, auxiliary engine loads have become a critical factor affecting powertrain performance and fuel economy. This is true both for thermal engines and for hybrid and electrified ones. In this regard, air conditioning, alternators, water pump and steering pump are the components that cannot be neglected. For a medium car (about 100 hp power), the contribution of the auxiliary loads can be more than 17% of the brake power (Gajanayake et al.), and it depends significantly on the operating and environmental conditions. Air conditioning systems usually consist of refrigerating units, where the compressor is driven by a belt linked to the engine crankshaft. During summer, the power absorbed can be significantly high when the cabin temperature approaches 40 °C or at low vehicle speeds, reducing the cooling of the condenser placed in the front end of the vehicle (Askar et al., 2023). Even the alternator is an energy-consuming component, and the progressive electrification of the vehicles claims for even more efficient electrical machines. The coolant pump is usually always active during the vehicle run since it has the fundamental role of delivering the coolant fluid to the engine and the other components of the powertrain, such as batteries, electronics and heater cores. The temperature control of these auxiliary components, which play a crucial role in the proper functioning of the vehicle, requires the coolant pump to be highl...

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The Effects of the Oil Temperature Warm-Up on Engine Fuel Consumption

Di Giovine,

Di Battista,

Cipollone

2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">The need for even more efficient internal combustion engines in the road transportation sector is a mandatory step to reduce the related CO<sub>2</sub> emissions. In fact, this sector impacts significantly on greenhouse gases worldwide, and the path toward hybrid and electric powertrains has just begun. In particular, in heavy-duty vehicles the full electrification of the powertrain is far to be considered as a really feasible alternative. So, internal combustion engines will still play a significant role in the near/medium future. Hence, technologies having a low cost to benefits (CO<sub>2</sub> reduction) ratio will be favorably introduced in existing engines. Thermal management of engines is today a recognized area of research. Inside this area, the interest toward the lubricant oil has a great potential but not yet fully exploited. Engine oil is responsible of the mechanical efficiency of the engine which has a significant potential of improvement. A faster warm-up during a daily urban trip when the engine starts from a cold state is a good way to reduce fuel consumption (CO<sub>2</sub> emissions) and also harmful emissions, which represent the most critical aspect in urban areas. Conventional oil warm-up takes several minutes to reach a thermal regime, during which inefficiencies related to the low oil temperature are significant.</div><div class="htmlview paragraph">In this paper, the relation between oil temperature and fuel consumption of a turbocharged diesel engine has been evaluated, matching a theoretical approach with experimental data. The oil warm-up has been registered during a homologation cycle when the engine was managed as light-duty propulsion system. Most part of the working conditions was done with the oil far from a thermal regime, demonstrating poor efficiency and high harmful emissions. Then, several strategies to speed up the oil warm-up have been investigated, characterizing the benefits in terms of CO<sub>2</sub> emissions. Particularly, the use of a thermal storage available on board resulted effective, as well as an eventual heat recovery from exhaust gases which immediately reach a temperature level enough to heat up the oil.</div></div>

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Experimentally Based Methodology to Evaluate Fuel Saving and CO <sub>2</sub> Reduction of Electrical Engine Cooling Pump during Real Driving

Cited by 4 publications

References 54 publications

Editorial: New developments in vehicle thermal management

Editorial: New developments in vehicle thermal management

Editorial: New developments in vehicle thermal management

The Effects of the Oil Temperature Warm-Up on Engine Fuel Consumption

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