The effectiveness of stop-start and thermal management measures to improve fuel economy

Bent, E.; Shayler, P. J.; Rocca, A. La; Rouaud, Cédric

doi:10.1533/9780857094735.1.27

Cited by 31 publications

(11 citation statements)

References 9 publications

(11 reference statements)

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“…With these premises, therefore, it is clear that during the engine warm-up phase there are effectively three thermal masses interacting with each other, namely the main engine block, the lubricant and the coolant. Of the three, the coolant is the fastest to respond owing to its temperature being closely coupled to that of the combustion gases [29,30]. In contrast, the lubricant temperature and block temperature are generally much slower to respond owing to the block having a large thermal inertia and the lubricant being much less closely coupled to the combustion process [31,32].…”

Section: Increased Frictionmentioning

confidence: 99%

A numerical–experimental approach to assess emission performance of new generation engines during the cold transient

Iodice¹,

Senatore²

2016

Int. J. Automot. Mech. Eng.

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Modern vehicles equipped with a spark ignition engine come with fuel injection and electronic mixture control, in combination with a three-way catalyst: as a result, carbon monoxide and unburned hydrocarbon cold emissions represent a significant share of total emissions if compared with those given off in hot conditions, so implying direct consequences on the air quality of metropolitan areas. The purpose of this research is to investigate the engine efficiency and emissive performance of last generation engines during the cold-start phase. For this aim, an experimental-analytical procedure was optimised and applied to study the cold emission behaviour of two motorcycles, characterised by similar technical specifications; the exhaust emissions of these motorcycles were measured on a chassis dynamometer in the laboratories of the National Research Council (CNR-Italy). By using this calculation procedure and the emission results measured during the experimental tests, the duration of the cold phase and the total emissions released during the cold-start transient were evaluated for carbon monoxide and unburned hydrocarbons. The average values of cold emission factors and warm-up transient durations obtained for unburned hydrocarbons were 1.05 g/km and 162 s, respectively. Regarding carbon monoxide, the average values of cold emission factors and warm-up transient durations were 14.9 g/km and 152 s, respectively. The results of this study are very useful for better characterising the emission levels of the last generation motorcycles under real urban conditions.

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Section: Increased Frictionmentioning

confidence: 99%

A numerical–experimental approach to assess emission performance of new generation engines during the cold transient

Iodice¹,

Senatore²

2016

Int. J. Automot. Mech. Eng.

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“…An important problem in engine design is that vehicle pollutant and noise emission limits will be reduced by the legislative authorities in the next few years . Engine encapsulation systems offer the possibility of achieving these goals .…”

Section: Introductionmentioning

confidence: 99%

Thermo‐Mechanical Investigation on an Automotive Engine Encapsulation System Made of Fiberglass Reinforced Polyamide PA6 GF30 Material

Caputo

Lamanna

Luca

et al. 2020

Macromolecular Symposia

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This paper deals with technological solutions of innovative engine encapsulation systems for automotive. The aim of this device is to insulate acoustically and thermally the engine from the environment, in order to keep its temperature higher for more hours after it has been switched off. If the engine is subsequently started within this interval, the higher temperature involving the lubricating oil will allow reducing its viscosity, resulting in a lower level of energy dissipation due to friction losses, a lower fuel consumption and, consequently, a lower CO 2 emission level. In this paper, a finite element model is carried out in order to investigate on the thermo-mechanical behavior of the proposed engine encapsulation system.

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“…La distancia recorrida por el vehículo en una prueba bajo el ciclo de conducción NEDC es de 11 km [1], dentro del cual se considera que existen 14 periodos de ralentí con un tiempo de parada de 340 segundos [2].…”

Section: Introductionunclassified

Influencia del sistema start-stop en el vehículo respecto durabilidad de la batería de acumuladores

et al. 2019

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Resumen-En la presente investigación se muestra los cálculos realizados para prever como afecta la instalación del sistema start-stop a la batería del vehículo Hyundai Getz 1.6, para seleccionar una diferente o mantener la misma, así como los resultados de las pruebas realizadas con el sistema en funcionamiento con el vehículo en neutro siguiendo los parámetros de pruebas del ciclo europeo de conducción, NEDC, del cual se obtuvo el tiempo de duración de la prueba y el número de paradas que ocurren. Los cálculos se realizaron tomando en cuenta parámetros tales como el consumo de corriente por parte del motor de arranque durante su activación y el amperaje que requieren los componentes electrónicos que hacen funcionar al sistema. Para esta investigación no se tomaron en cuenta los datos de consumo de combustible ni los niveles de emisiones de los gases de escape.Palabras clave-Start-stop, Batería, Sistema de carga, Consumo de corriente.Resumen-The present investigation shows the calculations made to anticipate the way the start-stop system instalation affect the Hyundai Getz 1.6 vehicle's battery, to select a different one or hold the same, as well as, the test results of the system working with the vehicle in neutral, following the Europe driving test parameters, NEDC, from wich the duration test time and the number of engine stops were obtained. The calculations were made taking into account parameters like the starter motor electric current consumption during its activation and the amperage required by electronics devices that control the system. In this investigation, the gas consumption and the exhaust gases emissions level, were not taking into consideration.

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The effectiveness of stop-start and thermal management measures to improve fuel economy

Cited by 31 publications

References 9 publications

A numerical–experimental approach to assess emission performance of new generation engines during the cold transient

A numerical–experimental approach to assess emission performance of new generation engines during the cold transient

Thermo‐Mechanical Investigation on an Automotive Engine Encapsulation System Made of Fiberglass Reinforced Polyamide PA6 GF30 Material

Influencia del sistema start-stop en el vehículo respecto durabilidad de la batería de acumuladores

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