Experimental Analysis on the Effects of Multiple Injection Strategies on Pollutant Emissions, Combustion Noise, and Fuel Consumption in a Premixed Charge Compression Ignition Engine

D’Ambrosio, Stefano; Mancarella, Alessandro; Manelli, Andrea; Mittica, Antonio; Hardy, Gilles

doi:10.4271/03-14-05-0037

Cited by 3 publications

(1 citation statement)

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“…Because of their higher thermal efficiencies, they can reduce CO 2 emissions by 11 to 40% compared to gasoline counterparts [4]. However, since diesel engines consistently struggle with higher nitrogen oxides (NO x ) and particulate matter (PM), exhaust pollutant emission targets may still be difficult to meet, despite recent efforts to optimize both in-cylinder combustion [5] and after-treatment systems (ATS) [6]. Biomass-derived, diesel-like fuels are a promising way to address these issues while also reducing the environmental impact of CI engines in terms of greenhouse gas (GHG) emissions [7].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Dual-Loop EGR Diesel Engine: Behavior as a Drop-In Fuel and Potentialities along Calibration Parameter Sweeps

D’Ambrosio¹,

Mancarella²,

Manelli³

2022

Energies

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This study examines the effects on combustion, engine performance and exhaust pollutant emissions of a modern Euro 6, dual-loop EGR, compression ignition engine running on regular EN590-compliant diesel and hydrotreated vegetable oil (HVO). First, the potential of HVO as a “drop-in” fuel, i.e., without changes to the original, baseline diesel-oriented calibration, was highlighted and compared to regular diesel results. This showed how the use of HVO can reduce engine-out emissions of soot (by up to 67%), HC and CO (by up to 40%), while NOx levels remain relatively unchanged. Fuel consumption was also reduced, by about 3%, and slightly lower combustion noise levels were detected, too. HVO has a lower viscosity and a higher cetane number than diesel. Since these parameters have a significant impact on mixture formation and the subsequent combustion process, an engine pre-calibrated for regular diesel fuel could not fully exploit the potential of another sustainable fuel. Therefore, the effects of the most influential calibration parameters available on the tested engine platform, i.e., high-pressure and low-pressure EGR, fuel injection pressure, main injection timing, pilot quantity and dwell-time, were analyzed along single-parameter sweeps. The substantial reduction in engine-out soot, HC and CO levels brought about by HVO could give the possibility to implement additional measures to limit NOx emissions, combustion noise and/or fuel consumption compared to diesel. For example, higher proportion of LP EGR and/or smaller pilot quantity could be exploited with HVO, at low load, to reduce NOx emissions to a greater extent than diesel, without incurring penalties in terms of incomplete combustion species. Conversely, at higher load, delayed main injection timings and reduced rail pressure could reduce combustion noise without exceeding soot levels of the baseline diesel case.

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Section: Introductionmentioning

confidence: 99%

Utilization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Dual-Loop EGR Diesel Engine: Behavior as a Drop-In Fuel and Potentialities along Calibration Parameter Sweeps

D’Ambrosio¹,

Mancarella²,

Manelli³

2022

Energies

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Influence of Injection System Parameters on Combustion Noise of a Small Power Non-Road Diesel Engine

Zhou,

Ma,

Liu

et al. 2023

Int.J Automot. Technol.

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Characterization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Diesel Engine as a Drop-In Fuel and With a Dedicated Calibration

d’Ambrosio,

Mancarella,

Marello

2023

J. Phys.: Conf. Ser.

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Renewable fuels can play an important role in achieving future goals of energy sustainability and CO2 reduction. In particular, hydrotreated vegetable oil (HVO) represents one of the most promising alternatives to petroleum-derived diesel fuels. Several studies have shown that conventional diesel engines can run on 100% HVO without significant modifications to the hardware and control strategies. The current activity has experimentally evaluated the potential of HVO as a “drop-in” fuel, i.e., without changes to the original baseline calibration, comparing it to conventional diesel fuel on a 2.3-litre Euro 6 compression ignition engine. Tests revealed that HVO can significantly reduce engine-out soot (by more than 60%), HC and CO emissions (by about 40%), compared to diesel, while NOx levels and fuel conversion efficiency remain relatively unchanged under steady-state warmed-up conditions. The advantages of HVO proved to be further enhanced when the engine has not yet warmed up. Using statistical techniques of design of experiments (DoE) at three warmed-up steady-state operating points, the main engine control parameters were recalibrated to demonstrate that engine-out emissions can be further optimized with a dedicated calibration.

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Experimental Analysis on the Effects of Multiple Injection Strategies on Pollutant Emissions, Combustion Noise, and Fuel Consumption in a Premixed Charge Compression Ignition Engine

Cited by 3 publications

References 0 publications

Utilization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Dual-Loop EGR Diesel Engine: Behavior as a Drop-In Fuel and Potentialities along Calibration Parameter Sweeps

Utilization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Dual-Loop EGR Diesel Engine: Behavior as a Drop-In Fuel and Potentialities along Calibration Parameter Sweeps

Influence of Injection System Parameters on Combustion Noise of a Small Power Non-Road Diesel Engine

Characterization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Diesel Engine as a Drop-In Fuel and With a Dedicated Calibration

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