An investigation on RCCI combustion in a heavy duty diesel engine using in-cylinder blending of diesel and gasoline fuels

Benajes, Jesús; Molina, Santiago; García, Antonio; Belarte, Eduardo; Vanvolsem, Michel

doi:10.1016/j.applthermaleng.2013.10.052

Cited by 162 publications

(61 citation statements)

References 20 publications

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“…Kim et al [2] studied the effect of a two stage injection (earlier injection and late injection near top dead center) on combustion behavior and engine emissions. The results showed that the two-stage injection can reduce NOx emissions compared to single injection DI diesel engine when the injection timing of the first and main injections is optimized.…”

Section: Introductionmentioning

confidence: 99%

Reducing Diesel Engine Emission Using Reactivity Controlled Approach

Ghazal

2018

J. Ecol. Eng.

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Several automobile manufacturers are interested in investigating of dual fuel internal combustion engines, due to high efficiency and low emissions. Many alternative fuels have been used in dual fuel mode for IC engine, such as methane, hydrogen, and natural gas. In the present study, a reactivity controlled compression ignition (RCCI) engine using gasoline/diesel (G/D) dual fuel has been investigated. The effect of mixing gasoline with diesel fuel on combustion characteristic, engine performance and emissions has been studied. The gasoline was injected in the engine intake port, to produce a homogeneous mixture with air. The diesel fuel was injected directly to the combustion chamber during compression stroke to initiate the combustion process. A direct injection compression ignition engine has been built and simulated using ANSYS Forte professional code. The gasoline amount in the simulation varied from (50%-80%) by volume. The diesel fuel was injected to the cylinder in two stages. The model has been validated and calibrated for neat diesel fuel using available data from the literature. The results show that the heat release rate and the cylinder pressure increased when the amount of added gasoline is between 50%-60% volume of the total injected fuels, compared to the neat diesel fuel. Further addition of gasoline will have a contrary effect. In addition, the combustion duration is extended drastically when the gasoline ratio is higher than 60% which results in an incomplete combustion. The NO emission decreased drastically as the gasoline ratio increased. Moreover, addition of gasoline to the mixture increased the engine power, thermal efficiency and combustion efficiency compared to neat diesel fuel.

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Section: Introductionmentioning

confidence: 99%

Reducing Diesel Engine Emission Using Reactivity Controlled Approach

Ghazal

2018

J. Ecol. Eng.

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“…It has a port injector for low reactive fuel (LRF) and a direct injector for high reactive fuel (HRF) [14,51,56,[62][63][64][65][66]. Figure 5 shows the experimental setup for RCCI with port and direct injection (Dual fuel).…”

Section: Rcci With a Port And A Direct Injection (Dual Fuel)mentioning

confidence: 99%

“…Gasoline has a high octane number (98) and Diesel has a high cetane number (52) [14,67]. Fuels with high octane number can bear high compression ratios [68].…”

Section: Gasoline/dieselmentioning

confidence: 99%

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Current trends on combustion control methods using fuel reactivities

Sankaralingam¹,

Venugopal²

2022

Int. J. Automot. Mech. Eng.

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Compression ignition (CI) engines are used in heavy duty engine applications due to their high torque capability and thermal efficiency. However, high NOx and smoke emissions are the challenges in using CI engines. Homogeneous charge compression ignition (HCCI) is one of the best methods to reduce NOx and smoke emissions. However, controlling the combustion for an entire range of operation in HCCI mode is a challenging task. Different methods like fast thermal management (FTM), exhaust gas recirculation (EGR), turbo charging and reactivity controlled compression ignition (RCCI) are reviewed and discussed in this article. RCCI is similar to HCCI, which uses reactivities of two different fuels to control combustion. The combustion objectives of HCCI such as less NOx and soot emission can also be obtained through this method. Combustion control based on reactivities of various fuels (RCCI) is discussed significantly. Fuels that have different reactivities can help to control the combustion phasing and thereby reducing the emission. Two different fuels can be injected together into the manifold or one fuel can be injected in the port and other in the combustion chamber directly for reactivity based combustion control. The technological development in different combustion control methods is reviewed and discussed in this article which is a useful knowledge base for further research investigations. When compared to other combustion control methods, RCCI is found to be advantageous in all perspectives such as cost, flexibility in control, simplicity and wide range of operation.

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“…RCCI relies on substantial differences in the reactivity of the involved fuels. The most common combination in RCCI is diesel-gasoline [6,7] as these fuels are the primary fuels in the automotive industry. The previous research outlined that fuel composition is the most influential parameter of the combustion performance.…”

Section: Introductionmentioning

confidence: 99%

Diesel/CNG Mixture Autoignition Control Using Fuel Composition and Injection Gap

et al. 2017

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Combustion phasing is the main obstacle to the development of controlled auto-ignition based (CAI) engines to achieve low emissions and low fuel consumption operation. Fuel combinations with substantial differences in reactivity, such as diesel/compressed natural gas (CNG), show desirable combustion outputs and demonstrate great possibility in controlling the combustion. This paper discusses a control method for diesel/CNG mixture combustion with a variation of fuel composition and fuel stratification levels. The experiments were carried out in a constant volume combustion chamber with both fuels directly injected into the chamber. The mixture composition was varied from 0 to 100% CNG/diesel at lambda 1 while the fuel stratification level was controlled by the injection phasing between the two fuels, with gaps between injections ranging from 0 to 20 ms. The results demonstrated the suppressing effect of CNG on the diesel combustion, especially at the early combustion stages. However, CNG significantly enhanced the combustion performance of the diesel in the later stages. Injection gaps, on the other hand, showed particular behavior depending on mixture composition. Injection gaps show less effect on combustion phasing but a significant effect on the combustion output for higher diesel percentage (≥70%), while it is contradictive for lower diesel percentage (<70%).

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An investigation on RCCI combustion in a heavy duty diesel engine using in-cylinder blending of diesel and gasoline fuels

Cited by 162 publications

References 20 publications

Reducing Diesel Engine Emission Using Reactivity Controlled Approach

Reducing Diesel Engine Emission Using Reactivity Controlled Approach

Current trends on combustion control methods using fuel reactivities

Diesel/CNG Mixture Autoignition Control Using Fuel Composition and Injection Gap

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