Optimizing gasoline compression ignition engine performance and emissions: Combined effects of exhaust gas recirculation and fuel octane number

Jiang, Chenxu; Huang, GQ; Liu, Gui-Bin; Qian, Yong; Lü, Xingcai

doi:10.1016/j.applthermaleng.2019.03.054

Cited by 46 publications

(12 citation statements)

References 50 publications

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“…The test accuracy and range of MultiGas 6030 and DMS 500 have been given in a previous study. 30 The structural sketch of test bench is shown in Figure 1.…”

Section: Diesel Engine and Measurementsmentioning

confidence: 99%

Coordination of fuel reactivity and injection timing to achieve highly efficient and stable gasoline compression ignition combustion in a wide load range

Jiang

Liu

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Gasoline compression ignition combustion is a new combustion mode with great development potential and is highly influenced by fuel reactivity and injection strategy. This paper coordinates the fuel octane number and single-injection timing to operate gasoline compression ignition combustion with high efficiency in a wide load range, with the speed fixed at 1500 r/min. The primary reference fuels with octane numbers 60, 70, 80, and 90 were used, labeled as PRF60, PRF70, PRF80, and PRF90, respectively. The results proved that under steady-state conditions where the speed and load changed slightly, taking the fuel economy and combustion and emission performance into account, PRF60 and PRF70 should be applied at a load lower than 2 bar and 2–8 bar, respectively, and the start of injection timing should be set at 13 °CA before top dead center. When the load is higher than 8 bar, PRF90 should be applied at the start of injection timing of 11 °CA before top dead center. It is noteworthy that PRF70 under medium-load conditions could achieve the indicated thermal efficiency of up to 47%. The injection timing of PRF90 was limited to 9–1711 °CA before top dead center due to the limit of the peak value of pressure rise rate, whereas PRF60 had a wider injection timing boundary than PRF90.

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“…The test accuracy and range of MultiGas 6030 and DMS 500 have been given in a previous study. 30 The structural sketch of test bench is shown in Figure 1.…”

Section: Diesel Engine and Measurementsmentioning

confidence: 99%

Coordination of fuel reactivity and injection timing to achieve highly efficient and stable gasoline compression ignition combustion in a wide load range

Jiang

Liu

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

Self Cite

View full text Add to dashboard Cite

show abstract

“…A novel concept, termed as Gasoline Compression Ignition (GCI), was also put forward by Kalghatgi in [10], where fuels in the gasoline auto-ignition quality range are used in CI engines to increase ignition and mixing times, mitigating emissions typically generated in conventional Diesel engines [11][12][13]. There have been many studies on seeking the ideal fuel research octane number (RON) range for GCI engine [14][15][16]. In [14], four gasoline fuels (RON = 72, 78, 84, 91) were tested in a single-cylinder light-duty engine with a compression ratio of 16, and it was found that the optimum fuel should have a RON span from 75 to 85.…”

Section: Introductionmentioning

confidence: 99%

“…Primary reference fuel (PRF), a bi-component mixture of n-heptane and iso-octane, is widely used to study the effects of fuel autoignition quality on engine combustion and emission characteristics due to its simplicity and flexibility of adjusting octane number from Diesellike to gasoline-like fuels compared to the more complex surrogate fuels (e.g. TRF) [16].The studies in [17,18] showed that the combustion and emission characteristics of actual fuel could be accurately reproduced by PRF. In [16], four PRFs (PRF60, PRF70, PRF80, PRF90) were used to enable a flexible adjustment of fuel RON for the GCI engine operation, and the obtained results further underlined the role of fuel reactivity in CI engine combustion and pollutant formation processes.…”

Section: Introductionmentioning

confidence: 99%

CFD analysis of combustion and emission characteristics of primary reference fuels: from transient Diesel spray to heavy-duty engine

Zhou

Lucchini

Novella

et al. 2021

Fuel

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“…Recently, Jiang et al [12] studied the effects of exhaust gas recirculation and fuel octane number on the performance and emissions of GCI engines.…”

Section: Introductionmentioning

confidence: 99%

Auto-ignition characteristics of high-reactivity gasoline fuel using a gasoline multi-hole injector

Mohan

Sim

et al. 2020

Experimental Thermal and Fluid Science

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Optimizing gasoline compression ignition engine performance and emissions: Combined effects of exhaust gas recirculation and fuel octane number

Cited by 46 publications

References 50 publications

Coordination of fuel reactivity and injection timing to achieve highly efficient and stable gasoline compression ignition combustion in a wide load range

Coordination of fuel reactivity and injection timing to achieve highly efficient and stable gasoline compression ignition combustion in a wide load range

CFD analysis of combustion and emission characteristics of primary reference fuels: from transient Diesel spray to heavy-duty engine

Auto-ignition characteristics of high-reactivity gasoline fuel using a gasoline multi-hole injector

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