Comparison between Combustion, Performance and Emission Characteristics of JP-8 and Ultra Low Sulfur Diesel Fuel in a Single Cylinder Diesel Engine

Nargunde, Jagdish; Jayakumar, Chandrasekharan; Sinha, Anubhav; Acharya, Kaushik; Bryzik, Walter; Henein, Naeim A.

doi:10.4271/2010-01-1123

Cited by 30 publications

(25 citation statements)

References 17 publications

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“…However, the lower soot level of Jet-A can be also found in Ref. [25]. Additionally, the complex trend of soot formation associated with different conditions can be found in Ref.…”

Section: Comparison Of Jet-a and Dieselmentioning

confidence: 90%

“…These results showed that JP-8 had a longer overall ignition delay time than diesel. The combustion and emission characteristics were compared by Nargunde et al [25] and Papagiannakis et al [4]. Their results showed that JP-8 led to a better combustion efficiency, improved fuel economy, and reduced NO x but with a higher soot emission compared with diesel fuel.…”

Section: Introductionmentioning

confidence: 97%

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Spray combustion of Jet-A and diesel fuels in a constant volume combustion chamber

Wei

Roberts

Fang

2015

Energy Conversion and Management

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“…However, the lower soot level of Jet-A can be also found in Ref. [25]. Additionally, the complex trend of soot formation associated with different conditions can be found in Ref.…”

Section: Comparison Of Jet-a and Dieselmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 97%

Spray combustion of Jet-A and diesel fuels in a constant volume combustion chamber

Wei

Roberts

Fang

2015

Energy Conversion and Management

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“…Another recent experimental single cylinder engine study by Nargunde et al [15] showed there was little difference between the ignition behavior of similar ignition quality North American ultra low sulfur DF-2 and JP-8 at a small set of operating conditions. Similarly, single cylinder JP-8 and DF-2 ignition delay data collected by Schihl and Hooterp [16] over a significant bulk temperature and density range using three difference nozzle geometries and fuels with similar ignition quality revealed a modest impact of evaporation rate on the ignition delay period.…”

Section: Figure 1 the 2007 Global Jp-8 Cetane Index Distributionmentioning

confidence: 97%

On the Ignition Behavior of JP-8 in Military Relevant Diesel Engines

Schihl¹,

Hoogterp-Decker²

2011

SAE Int. J. Engines

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U.S. Army ground vehicles predominately use JP-8 as the energy source for ground vehicles based on the 'one fuel forward policy'. Though this policy was enacted almost twenty years ago, there exists little fundamental JP-8 combustion knowledge at diesel engine type boundary conditions. Nevertheless, current U.S. Army ground vehicles predominately use commercial off-the-shelf or modified commercial diesel engines as the prime mover. Unique military engines are typically utilized when commercial products do not meet the mobility and propulsion system packaging requirements of the particular ground vehicle in question. In either case, such engines have been traditionally calibrated using North American diesel fuel (DF-2) and overall engine performance degradation while operating on Jet Propellant 8 (JP-8) wasn't given much consideration since any such associated power loss due to the lower volumetric energy density was not an issue for most applications at then targeted climatic conditions. It is becoming more apparent that current and future commercial diesel engine combustion system strategies will be adversely affected by use of JP-8 in comparison to DF-2 due to combustion affecting chemical and physical property differences of 'out laying' global JP-8 samples that are problematic under largely premixed combustion strategies. One important example is ignition quality where the mean cetane index for JP-8 utilized by the U.S. Army during the last five years has been typically in the 43 to 44 range, but the variance has been relatively large depending on the particular supply source with worst case scenarios exhibiting values near 30. Similar variances have been observed with other key properties such as distillation and viscosity.To date, there has been little research performed on assessing ignition behavior differences between a mean physical and chemical property JP-8 and DF-2. The objective of this submission is to study and document JP-8 autoignition characteristics under diesel engine-like thermodynamic conditions in order to provide information that might be useful in generating JP-8 ignition models. This effort includes recent ignition data from a single cylinder diesel engine, a production multi-cylinder diesel engine, a shock tube, and a constant volume bomb.

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“…The injection timing, pulse duration and rail pressure are controlled by an open ECU. A detailed description of the experimental set-up can be found in [8]. The test matrix and experimental conditions are given in Appendix A.…”

Section: Engine Set-upmentioning

confidence: 99%

Effect of Inlet Air Temperature on Auto-Ignition of Fuels With Different Cetane Number and Volatility

Jayakumar

Zheng

Joshi

et al. 2011

ASME 2011 Internal Combustion Engine Division Fall Technical Conference

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This paper investigates the effect of air inlet temperature on the auto-ignition of fuels that have different CN and volatility in a single cylinder diesel engine. The inlet air temperature is varied over a range of 30°C to 110°C. The fuels used are ultra-low-sulfur-diesel (ULSD), JP-8 (two blends with CN 44.1 & 31) and F-T SPK. Detailed analysis is made of the rate of heat release during the ignition delay period, to determine the effect of fuel volatility and CN on the auto-ignition process. A STAR-CD CFD model is applied to simulate the spray behavior and gain more insight into the processes that immediately follow the fuel injection including evaporation, start of exothermic reactions and the early stages of combustion. The mole fractions of different species are determined during the ignition delay period and their contribution in the auto-ignition process is examined. Arrhenius plots are developed to calculate the global activation energy for the auto-ignition reactions of these fuels. Correlations are developed for the ID and the mean air temperature and pressure.

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Comparison between Combustion, Performance and Emission Characteristics of JP-8 and Ultra Low Sulfur Diesel Fuel in a Single Cylinder Diesel Engine

Cited by 30 publications

References 17 publications

Spray combustion of Jet-A and diesel fuels in a constant volume combustion chamber

Spray combustion of Jet-A and diesel fuels in a constant volume combustion chamber

On the Ignition Behavior of JP-8 in Military Relevant Diesel Engines

Effect of Inlet Air Temperature on Auto-Ignition of Fuels With Different Cetane Number and Volatility

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