A Zero-Dimensional Phenomenological Model for RCCI Combustion Using Reaction Kinetics

Eichmeier, Johannes; Reitz, Rolf D.; Rutland, Christopher J.

doi:10.4271/2014-01-1074

Cited by 32 publications

(16 citation statements)

References 27 publications

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“…RCCI combustion concept. 86 the PRF number would need to be increased by ;10 PRF units to maintain constant combustion phasing (crank angle at which 50% mass fraction has combusted (CA50) = 2°after top dead center (ATDC)).…”

Section: Rccimentioning

confidence: 99%

Progress and recent trends in reactivity-controlled compression ignition engines

Paykani

Kakaee

Rahnama

et al. 2015

International Journal of Engine Research

174

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Low-temperature combustion is an emerging engine technology that has the ability to yield low NO x and soot emissions while maintaining high fuel efficiency. Low-temperature combustion strategies include homogeneous charge compression ignition, premixed charge compression ignition, reactivity-controlled compression ignition and partially premixed combustion. These low-temperature combustion strategies use early fuel injections to allow sufficient time for air-fuel mixing before combustion. According to the literature, some low-temperature combustion strategies are not promising for future automotive and power generation applications due to difficulties in controlling the heat release rate and the lack of a combustion phasing control mechanism. To mitigate these problems, the reactivity-controlled compression ignition combustion concept was introduced. Reactivity-controlled compression ignition is a dual-fuel partially premixed combustion concept, which uses port fuel injection of a low-reactivity fuel (e.g. gasoline, natural gas and alcohol fuels) and direct injection of a high-reactivity fuel (e.g. diesel and biodiesel) with blending inside the combustion chamber to increase the combustion duration and to provide phasing control. Combustion phasing is controlled by the relative ratios of the two fuels, and the combustion duration is controlled by spatial stratification between the two fuels. This article begins by an overview of the different low-temperature combustion strategies and demonstrates some advantages of reactivitycontrolled compression ignition, over homogeneous charge compression ignition and premixed charge compression ignition combustion strategies in regard to fuel flexibility and combustion controllability. A comprehensive review of recent research on various aspects of reactivity-controlled compression ignition and comparisons of thermal efficiency and pollutant emissions over conventional diesel combustion is also presented. This article presents the significance of reactivity-controlled compression ignition strategy as a promising solution for future automotive engines and discusses future research directions.

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Section: Rccimentioning

confidence: 99%

Progress and recent trends in reactivity-controlled compression ignition engines

Paykani

Kakaee

Rahnama

et al. 2015

International Journal of Engine Research

174

View full text Add to dashboard Cite

show abstract

“…1B, observed especially during low load operation. At higher loads cycle to cycle (and cylinder to cylinder in multi-cylinder engines) variations remain constant problems [14][15][16]. Addressing those issues requires sophisticated control algorithm which employ multiple regulation parameters like: gas/diesel blend ratio (BR), liquid fuel injection timing (including divided injection), and injection pressure, gaseous fuel injection timing, exhaust gas re-circulation, turbocharging/throttling, or air path heating.…”

Section: Introductionmentioning

confidence: 99%

“…Simulations of dual fuel natural gas (NG)/diesel combustion have been reported with different approaches and for different purposes. The research works include detailed 3-D CFD simulations [12,13], or faster reaction kinetic based multi-zone simulations [14][15][16]. Engine control development, however, requires much faster approaches.…”

Section: Introductionmentioning

confidence: 99%

Validation of a zero-dimensional and 2-phase combustion model for dual-fuel compression ignition engine simulation

Mikulski

Wierzbicki

2017

Therm sci

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Increasing demands for the reduction of exhaust emissions and the pursuit to reduce the use of fossil fuels require the search for new fuelling technologies in combustion engines. One of the most promising technologies is the multi-fuel compression ignition engine concept, in which a small dose of liquid fuel injected directly into the cylinder acts as the ignition inhibitor of the gaseous fuel. Achieving the optimum combustion process in such an engine requires the application of advanced control algorithms which require mathematical modelling support. In response to the growing demand for new simulation tools, a 0-D model of a dual-fuel engine was proposed and validated. The validation was performed in a broad range of engine operating points, including various speeds and load condition, as well as different natural gas/diesel blend ratios. It was demonstrated that the average model calculation error within the entire cycle did not exceed 6.2%, and was comparable to the measurement results cycle to cycle variations. The maximum model calculation error in a single point of a cycle was 15% for one of the complex (multipoint injection) cases. In other cases, it did not exceed 11%.

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“…Combustion progresses sequentially from the high reactivity regions to low reactivity regions, thereby effectively lowering PRR. In addition, flame propagation plays a negligible role during the RCCI combustion process due to the very lean equivalence ratios (Kokjohn, 2012;Reitz, 2013;Eichmeier et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

CFD Study of Reactivity Controlled Compression Ignition (RCCI) Combustion in a Heavy-Duty Diesel Engine

Kakaee

Rahnama

Paykani

2015

Period. Polytech. Transp. Eng.

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In this paper, a numerical study is carried out to investigate the combustion and emission characteristics of reactivity controlled compression ignition (RCCI) combustion mode in a heavy-duty, single-cylinder diesel engine with gasoline and diesel fuels using KIVA-CHEMKIN code with a reduced primary reference fuel (PRF) mechanism. Firstly, a comparison is performed between RCCI and CDC performance and emissions to show the superior characteristics of RCCI combustion. Then, the effect of diesel fuel mass fraction in SOI-1 on combustion and emissions of RCCI engine is studied. It is shown that by increasing the diesel mass fraction in SOI-1, combustion event occurs earlier and PPRR is slightly higher. But this parameter has a trivial influence compared to PRF number and SOI timing.

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A Zero-Dimensional Phenomenological Model for RCCI Combustion Using Reaction Kinetics

Cited by 32 publications

References 27 publications

Progress and recent trends in reactivity-controlled compression ignition engines

Progress and recent trends in reactivity-controlled compression ignition engines

Validation of a zero-dimensional and 2-phase combustion model for dual-fuel compression ignition engine simulation

CFD Study of Reactivity Controlled Compression Ignition (RCCI) Combustion in a Heavy-Duty Diesel Engine

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