A global combustion model for simulation of n-heptane and iso-octane self ignition

Voglsam, S.; Winter, Franz

doi:10.1016/j.cej.2012.06.086

Cited by 20 publications

(4 citation statements)

References 45 publications

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“…Furthermore, the delay tends to reduce as lambda increase yet the combustion duration remains the same. This condition is in opposite with previous literature where the leaner mixture showed longer ignition delay [14]. These difference probably due to different experimental setup.…”

Section: Iso-octanecontrasting

confidence: 56%

Investigation of Auto-ignition of Several Single Fuels

Aziz

2014

MATEC Web of Conferences

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Abstract-HCCI operating principals have been widely investigated yet the uncontrollable combustion of HCCI is the major obstacle in its development. This paper is trying to increase the understanding on the auto-ignition and combustion process of several fuels to be applied in HCCI combustion system. The investigation includes the combustion behavior of 4 fuels, gasoline (RON95), diesel, n-heptane, isooctane, The investigation was done in constant volume chamber with elevated temperature (800qC). Four lambdas were tested for each fuel namely 0.8, 1, 1.2 and 2. It is found that these fuels can be categorized into two major categories based on combustion characteristics, homogeneous and diffusive combustion. Gasoline and isooctane, homogeneous combustion, shows almost the same behavior where the increase in lambda will increase the combustion delay even though isooctane shows much longer delayed compared to gasoline. While diesel and n-heptane, diffusive combustion, has no ignition delay yet showing different behavior on the later parts of the combustion where diesel effecting 10-90% combustion stage while n-heptane on 90-100%.

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Section: Iso-octanecontrasting

confidence: 56%

Investigation of Auto-ignition of Several Single Fuels

Aziz

2014

MATEC Web of Conferences

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“…Table 1 lists the details of each case setup. In this study we use a kinetic mechanism that has been developed for self-ignition of mixtures of iso-octane and n-heptane known as primary reference fuel (PRF) [28]. The mechanism involves 18 species and 19 reactions.…”

Section: Resultsmentioning

confidence: 99%

Effects of fuel cetane number on the structure of diesel spray combustion: An accelerated Eulerian stochastic fields method

Jangi

Lucchini

Gong

et al. 2015

Combustion Theory and Modelling

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“…This trend indicates that the lambda is a significant parameter in controlling ignition delay as well as temperature. Voglsam and Winter [29] showed the effect of temperature variation on the ignition delay of Octane in stoichiometric conditions. A logarithmic scale ignition delay was observed in the temperature range from 700-1250 K. The ignition delays for 800 C reported by Voglsam and Winter [29] are in the range of 0.5-1 ms, while in this experiment the ignition delay ranges from 100-2000 ms, which is a few hundred times greater.…”

Section: Resultsmentioning

confidence: 99%

“…Voglsam and Winter [29] showed the effect of temperature variation on the ignition delay of Octane in stoichiometric conditions. A logarithmic scale ignition delay was observed in the temperature range from 700-1250 K. The ignition delays for 800 C reported by Voglsam and Winter [29] are in the range of 0.5-1 ms, while in this experiment the ignition delay ranges from 100-2000 ms, which is a few hundred times greater. The physical delay from droplet heating and fuel evaporation, along with the CNG addition in the system, are the main reasons for these significant differences.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Auto-Ignition of Octane-CNG Mixture in Hcci Engine

Aziz¹

2015

Int. J. Automot. Mech. Eng.

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Homogeneous Charge Combustion Ignition (HCCI) operating principles have been widely investigated, yet the uncontrollable combustion of HCCI is the major obstacle in its development. The combustion characteristics of single fuels have been widely investigated as the fuel is the most influential factor that determines the HCCI combustion behavior. However, investigations of auto-ignition behavior for multiple fuels have not been carried out. This paper investigates various fuel compositions of Octane and compressed natural gas (CNG), ranging from 10-100% Octane/CNG. The investigation was done in a constant volume chamber with an 820 C cartridge heater. Three lambdas were tested for each fuel mixture, namely 0.8, 1, and 1.2. From the results, it was found that the mixture composition has a major effect on the output of the combustion of dual fuel and a 20 ms injection gap shows better combustion results due to the higher percentage of Octane in the hotter regions, as well as the more homogeneous mixture created. On the other hand, the lambda is a significant parameter that affects the ignition delay, along with the temperature and droplet size of the mixture,

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A global combustion model for simulation of n-heptane and iso-octane self ignition

Cited by 20 publications

References 45 publications

Investigation of Auto-ignition of Several Single Fuels

Investigation of Auto-ignition of Several Single Fuels

Effects of fuel cetane number on the structure of diesel spray combustion: An accelerated Eulerian stochastic fields method

Investigation of Auto-Ignition of Octane-CNG Mixture in Hcci Engine

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