Application of a Model-Based Controller for Improving Internal Combustion Engines Fuel Economy

Castiglione, Teresa; Morrone, Pietropaolo; Falbo, Luigi; Perrone, Diego; Bova, Sergio

doi:10.3390/en13051148

Cited by 23 publications

(11 citation statements)

References 34 publications

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“…There are several designs have been developed in the automotive cooling system to improve engine thermal efficiency. Basically, these designs use controllable actuators and mechatronic components such as electric water pump, controllable thermostat, and controllable electric fan to improve engine temperature control on most operating ranges [12][13][14][15][16]. Overall, the design would be more complex but there are pros and cons on these designs.…”

Section: Introductionmentioning

confidence: 99%

Simulation of bypass electric water pump to reduce the engine warm-up time

Jalal

Yusoff

Hasan

et al. 2021

JMES

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There are several strategies have been developed in the automotive cooling system to improve engine thermal management. Basically, these designs use controllable actuators and mechatronic components such as electric water pump, controllable thermostat, and controllable electric fan to improve engine temperature control on most operating ranges. Most of the strategies are complicated and costly. This paper introduced a different approach to improve coolant temperature warm-up during cold start. The new strategy was by promoting a higher coolant flow rate inside the engine block by just installing an electric water pump in the bypass hose. The new approach’s cold start performance was studied using GT-SUITE on a transient model, complete with finite-element of engine block design, lubrication system, components friction model, engine with combustion model and vehicle system. The proposed strategy clearly showed faster coolant temperature increase (18 seconds faster compared to the conventional cooling system). The strategy not only increase the coolant temperature faster, but also increases the oil temperature faster, lower Friction Mean Effective Pressure (FMEP), and lower fuel consumption at certain condition during the warm-up period.

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Section: Introductionmentioning

confidence: 99%

Simulation of bypass electric water pump to reduce the engine warm-up time

Jalal

Yusoff

Hasan

et al. 2021

JMES

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“…Engines operating with the traditional spark-ignition (SI) system are currently unfit to guarantee high performance together with low emissions at lean and/or diluted operating conditions [11][12][13][14][15]. Many attempts have been made out to improve the conventional SI combustion process by varying the discharge interval [16,17] or by improving the released thermal energy [18], but issues such as fouling, erosion, and heat loss through the electrodes have led automotive research to look for other solutions [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Lean Stable Limit of a Barrier Discharge Igniter and of a Streamer-Type Corona Igniter at Different Engine Loads in a Single-Cylinder Research Engine

Ricci

Petrucci

Cruccolini

et al. 2020

The First World Energies Forum—Current and Future Energy Issues

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Currently, the Radio-Frequency Corona Ignition systems represent an important solution for reducing pollutant emissions and fuel consumption related to Internal Combustion Engines, while at the same time ensuring high performance. These igniters are able to extend the lean stable limit by increasing the early flame growth speed. Kinetic, thermal, and ionic effects, together with the peculiar configuration of the devices, allow the combustion process to start in a wider region than the one involved with the traditional spark. In this work two corona igniters, namely a Barrier Discharge Igniter and a Corona Streamer Igniter, were tested in a single-cylinder research engine fueled with gasoline at different engine loads in order to investigate the igniters’ performance through indicated analysis and pollutant emissions analysis. For each operating point, the devices’ control parameters were set to ensure maximum energy releasement into the medium with the aim of investigating, at the extreme operating conditions, the capability of the devices to extend the lean stable limit of the engine. The corona igniters were tested on a constant volume calorimeter as well, reproducing the engine pressure conditions at the corresponding ignition timing. The target was to give an estimation of the thermal energy released during the discharge and then to compare their capability to provide high-stability energy.

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“…Focusing ICE thermal management, it directly concerns the thermal behavior of metal walls of cylinders and engine head [29], optimizing temperature to improve combustion [30], saving fuel and reduce emissions [31,32], avoiding after-boiling of the cooling fluid and mitigating knock [33,34]. Lubrication circuit has been also a main topic of investigation, due to its strict interactions with the engine coolant [35] and the fuel consumption benefits related to faster oil warm up [36], which implies lower oil viscosity at higher temperature and, so, low engine friction: split sump [37,38], heat-to-oil [39], thermal storage and variable flow lubrication [40,41] are the principal technologies available at the moment.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analyses to improve the design of engine coolant pumps

et al. 2020

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In this paper, an experimentally based procedure is presented to re-orient the design point of the pump in order to minimize the energy absorbed during the homologation cycle or during any real driving one. During it, in fact, every benefit on the pump’s efficiency is appreciated and produces fuel consumption and CO2 reduction. The procedure takes the advantage from a dynamic test bench for coolant pump, realized and engineered at University of L’Aquila. It has been linked to a model-based methodology, which evaluates, according to a specified vehicle’s mission profile, the speed and load variation of the engine propelling the vehicle, and, therefore, the pump speed. The knowledge of the engine cooling circuit for closed and fully opened thermostat allows the calculation of the flow rates and pressure delivered in each time instant of the drive cycle. The speed-flow rate-pressure delivered pump profile has been reproduced on the bench, and all the relevant quantities have been measured: an exact evaluation of the scatter of the efficiency of the pump, the instantaneous power and the overall energy absorbed have been obtained. Results show how the pump efficiency is far from its Best Efficiency Point. This conclusion invited the Authors to reorient the design pump considering an operating condition, which has a greater occurrence among all the operating points characteristic of a drive cycle. Four pumps have been designed following this approach, showing a sensible reduction of the energy absorbed: this represents a key point also for pump electrification.

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Application of a Model-Based Controller for Improving Internal Combustion Engines Fuel Economy

Cited by 23 publications

References 34 publications

Simulation of bypass electric water pump to reduce the engine warm-up time

Simulation of bypass electric water pump to reduce the engine warm-up time

Investigation of the Lean Stable Limit of a Barrier Discharge Igniter and of a Streamer-Type Corona Igniter at Different Engine Loads in a Single-Cylinder Research Engine

Experimental and numerical analyses to improve the design of engine coolant pumps

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