Evaluation of the Influence of an Alternator with Mechanical Decoupling on Energy Consumption and CO<sub>2</sub> Emission in a Flex Fuel Vehicle

Sales, Luís Carlos Monteiro; Pacheco, Edilson P.; Monteiro, Luís Gustavo C.; Souza, Lícia G.; Mota, Moises S.

doi:10.4271/2017-36-0116

Cited by 7 publications

(5 citation statements)

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“…This electricity is generated at expense of consuming more fuel. Some studies have reported that alternators are the responsible of 4 ∼ 6% of the total fuel consumption of the vehicle [29,32].…”

Section: Ateg Experimentsmentioning

confidence: 99%

Towards Compliance with the Prospective Euro Vii Nox Emissions Limit Using a Thermoelectric Aftertreatment Heater

Ximinis¹,

Massaguer²,

Massaguer³

2022

SSRN Journal

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Section: Ateg Experimentsmentioning

confidence: 99%

Towards Compliance with the Prospective Euro Vii Nox Emissions Limit Using a Thermoelectric Aftertreatment Heater

Ximinis¹,

Massaguer²,

Massaguer³

2022

SSRN Journal

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“…The classical energy balance of internal combustion engines has shown that friction and auxiliary accessories can consume a large part of thermal energy [3].…”

Section: Literature Reviewmentioning

confidence: 99%

“…One of these relays is commissioned to the mechanical coupling, while the other drives the alternator's electric coupling. [3].…”

Section: Alternator Coupling and Decoupling Strategiesmentioning

confidence: 99%

Melhoria da eficiência energética automotiva aplicando o sistema Start&Stop e estratégias de operação do alternador

Monteiro¹,

Pujatti²,

Sousa³

et al. 2019

Blucher Engineering Proceedings

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With the formidable growth of the automotive industry, also came the concern with the rise of greenhouse gas emissions and the importance of this sector to develop innovative technologies to increase energy efficiency, reducing fuel consumption and consequently mitigating CO2 emissions. This research aimed at the experimental analysis of the energy consumption and CO2 reduction comparison applying Stop & Start system and alternator operations strategies. One of these alternator operational strategies is based on its mechanical and electrical coupling and decoupling due to a pulley integrated to an electromagnetic clutch in certain predetermined circumstances. This operation was elaborated from the conventional strategy that contemplates only the electrical decoupling, known as "smart alternator". The tests were performed on a vehicle in the urban and highway cycles (FTP75 + HW) in order to evaluate its operational characteristics, as well as obtaining the energy consumption of each configuration. Compared to the baseline configuration, the results presented energy consumption reductions of 2.38% and 3.56%, using separately the Start & Stop system and alternator operating strategies, respectively, and reduction of 4.91% when combined.

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“…Fitz and Cali [12] proposed a cam-based mechanism to decouple the alternator pulley from the FEAD. In recent efforts [13,14], Sales et al carried out an experimental analysis of an alternator equipped with a mechanical decoupling system, which aids in unloading the crankshaft axis in relation to the inertia and electromagnetic field of the alternator. The mechanical decoupling mechanism has been shown to enhance the vehicle's fuel economy by 4.73% during urban driving.…”

Section: Introductionmentioning

confidence: 99%

Active Electromagnetic Clutch for Crankshaft Decoupling from a Belt Drive System

Castellanos Molina,

Galluzzi,

Hegde

et al. 2024

Applied Sciences

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This work presents a novel electromagnetic clutch installed on the crankshaft pulley to decouple the internal combustion engine from the front-end accessory drive of a P0 hybrid electric vehicle. The objective is to supply the air conditioning compressor directly with the belt starter–generator electric machine without dragging the inertia of the engine during engine fuel cut-off phases. This operation yields an improved vehicle energetic efficiency and allows for uninterrupted air conditioning also when the start–stop function is activated. This paper focuses on the mechanical assembly and electromagnetic behavior of the device. Furthermore, two position-sensorless techniques are proposed to estimate the clutch state. The effectiveness of the proposed solution is experimentally validated on a dedicated test bench. Experimental tests demonstrated that the opening and closing phases required 50 and 25ms, respectively, thereby satisfying the time constraints for switching different operating modes in a vehicle (∼100ms).

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Evaluation of the Influence of an Alternator with Mechanical Decoupling on Energy Consumption and CO₂ Emission in a Flex Fuel Vehicle

Cited by 7 publications

References 0 publications

Towards Compliance with the Prospective Euro Vii Nox Emissions Limit Using a Thermoelectric Aftertreatment Heater

Towards Compliance with the Prospective Euro Vii Nox Emissions Limit Using a Thermoelectric Aftertreatment Heater

Melhoria da eficiência energética automotiva aplicando o sistema Start&Stop e estratégias de operação do alternador

Active Electromagnetic Clutch for Crankshaft Decoupling from a Belt Drive System

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Evaluation of the Influence of an Alternator with Mechanical Decoupling on Energy Consumption and CO2 Emission in a Flex Fuel Vehicle

Cited by 7 publications

References 0 publications

Towards Compliance with the Prospective Euro Vii Nox Emissions Limit Using a Thermoelectric Aftertreatment Heater

Towards Compliance with the Prospective Euro Vii Nox Emissions Limit Using a Thermoelectric Aftertreatment Heater

Melhoria da eficiência energética automotiva aplicando o sistema Start&Stop e estratégias de operação do alternador

Active Electromagnetic Clutch for Crankshaft Decoupling from a Belt Drive System

Contact Info

Product

Resources

About

Evaluation of the Influence of an Alternator with Mechanical Decoupling on Energy Consumption and CO₂ Emission in a Flex Fuel Vehicle