A comparative study on the performance of partially premixed combustion (PPC), reactivity-controlled compression ignition (RCCI), and RCCI with reverse reactivity stratification (R-RCCI) fueled with gasoline and polyoxymethylene dimethyl ethers (PODEn)

Duan, Huiquan; Li, Yaopeng; Wang, Tianyou

doi:10.1016/j.fuel.2021.120838

Cited by 29 publications

(6 citation statements)

References 55 publications

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“…When the load is low, it can be seen from Figure 3a that as the MPR increases, the T decreases in the first and middle stage of combustion, the T rises slightly in the later stage of the combustion, and the maximum in‐cylinder temperature ( T max ) decreases. This is because the increase of MPR delays the heat release process 16,17 . Figure 3b shows the variation trend of T with MPR under high load conditions.…”

Section: Resultsmentioning

confidence: 99%

“…This is because the increase of MPR delays the heat release process. 16,17 Figure 3b shows the variation trend of T with MPR under high load conditions. As the MPR increases, the T in the early and late stages of combustion decreases slightly, and it rises significantly in the middle of combustion.…”

Section: Influence Of Methanol Premixed Ratio On Combustion Character...mentioning

confidence: 99%

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Experimental study on combustion characteristics of a fischer‐tropsch diesel/methanol reactivity controlled compression ignition mode engine

Bai

Wang

et al. 2022

Env Prog and Sustain Energy

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F-T diesel is an alternative fuel with a high cetane number (CN) for internal combustion engines. Methanol has a low CN and contains oxygen. F-T diesel and methanol are potential fuels for the reactivity controlled compression ignition (RCCI) engines.In a single-cylinder 186FA compression-ignition engine with a combination of methanol inlet pipe injection and F-T diesel in-cylinder injection, the combustion characteristics of the F-T diesel/methanol RCCI mode engine are investigated. The results show that as methanol premixed ratio (MPR) increases, the ignition delay (ID) is prolonged at low load conditions, the maximum in-cylinder pressure (P max ) and indicated thermal efficiency (ITE) a decreased. When the MPR increases from 0% to 60%, the ID is extended by 1.7 CA, the P max decreases by 8.1%, and the ITE decreases by 1.1%. At high load conditions, MPR rises from 0% to 60%, combustion duration (CD) is shortened by 2.4 CA, P max is increased by 8.3%, and the ITE is increased by 1.7%.The fuel injection advance angle (IAA) of F-T diesel significantly influences the combustion process of the RCCI engine. As the IAA increases, the ID is shortened at high loads, and the P max and the ITE are increased. When the MPR is 60% and the IAA is 14 CA, the ITE of the engine is increased by 2.04%, and the equivalent indicated fuel consumption rate(b e ) is reduced by 5.68% compared with the engine fueled with F-T diesel under high loads.

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Section: Resultsmentioning

confidence: 99%

Section: Influence Of Methanol Premixed Ratio On Combustion Character...mentioning

confidence: 99%

Experimental study on combustion characteristics of a fischer‐tropsch diesel/methanol reactivity controlled compression ignition mode engine

Bai

Wang

et al. 2022

Env Prog and Sustain Energy

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“…38,39 Several researchers have conducted RCCI simulations and experimentation using port-injection of low-reactivity fuel and direct-injection of high-reactivity fuel. 13,[40][41][42][43] In comparison to conventional diesel combustion (CDC), RCCI produces ultralow NO X and soot levels, but a substantial proportion of unburned hydrocarbon (UHC) and carbon monoxide (CO). LTC techniques have a lot of chemical kinetics, which limits their ability to regulate how quickly and how long heat is released.…”

Section: Introductionmentioning

confidence: 99%

Statistical analysis of ethanol/diesel dual-fuel combustion of compression ignition engines in RCCI mode using multi-injection strategies

Elbanna

Cheng

Chao

et al. 2023

Sustainable Energy Fuels

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“…3,4 The PLTC strategy included HCCI and PCCI can be able to reduce the NOx emission level through reduction in the engine in-cylinder temperature and also to control the soot level by avoiding the formation of local fuel rich zones in the engine combustion chamber. 5 But, these mentioned strategies suffer from higher level of CO and UHC emissions which need after-treatment devices, the lack of being in full control of the combustion phasing, and the diesel knock occurrence. 5 Therefore, in 2011, RCCI combustion as a subset of the PLTC strategy was introduced to overcome the challenges of HCCI and PCCI.…”

Section: Introductionmentioning

confidence: 99%

“…5 But, these mentioned strategies suffer from higher level of CO and UHC emissions which need after-treatment devices, the lack of being in full control of the combustion phasing, and the diesel knock occurrence. 5 Therefore, in 2011, RCCI combustion as a subset of the PLTC strategy was introduced to overcome the challenges of HCCI and PCCI. 6 In a RCCI engine, the control of the combustion phasing can easily be done through the use of two fuels with different reactivity, low reactivity and high reactivity, and also with two fuels ratio.…”

Section: Introductionmentioning

confidence: 99%

Maximum reduction in greenhouse gas emissions by complete replacement of natural gas with pure hydrogen as a sole low reactive fuel in a RCCI engine

Sattarzadeh

Ebrahimi

Jazayeri

2022

International Journal of Engine Research

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In order to maximum reduction in hydrocarbon fuels consumption as the largest source of greenhouse gas emissions, the aim of this study is to evaluate a RCCI engine performance fueled with diesel fuel and pure hydrogen as sole low reactive fuel. For this purpose, a single-cylinder heavy-duty diesel engine with bathtub piston bowl profile and compression ratio of 14.88:1 is assessed that operates at its mid-load range from 9.4 to 13.5 bar gross IMEPs. In order to overcome the NOx challenge resulted from using pure hydrogen, the use of suitable amount of EGR and nitrogen addition as air-hydrogen diluents along with the advanced SOI timing were employed. The simulation results show that in a hydrogen-fueled RCCI engine, while reducing the diesel fuel energy share as the only supplier of air-hydrogen mixture ignition energy to about 13%, the HES percentage can be enhanced up to 87%. Although, the SOC will occur with a long delay and the CA50 will take place about 15°CA after the TDC compared to the experimental data, however, the maximum loss of the engine load is less than 6% with the GIE of more than 48% without any exposure to diesel knock. Moreover, not only the EURO VI level of the CO and UHC emissions and the EPA level of Formaldehyde emission can be met, but also, the EURO VI level of NOx emission as the most important challenge of a hydrogen-fueled engine is achievable.

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A comparative study on the performance of partially premixed combustion (PPC), reactivity-controlled compression ignition (RCCI), and RCCI with reverse reactivity stratification (R-RCCI) fueled with gasoline and polyoxymethylene dimethyl ethers (PODEn)

Cited by 29 publications

References 55 publications

Experimental study on combustion characteristics of a fischer‐tropsch diesel/methanol reactivity controlled compression ignition mode engine

Experimental study on combustion characteristics of a fischer‐tropsch diesel/methanol reactivity controlled compression ignition mode engine

Statistical analysis of ethanol/diesel dual-fuel combustion of compression ignition engines in RCCI mode using multi-injection strategies

Maximum reduction in greenhouse gas emissions by complete replacement of natural gas with pure hydrogen as a sole low reactive fuel in a RCCI engine

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