Fast heat release characterization of a diesel engine

Asad, Usman; Zheng, Ming

doi:10.1016/j.ijthermalsci.2008.01.009

Cited by 62 publications

(34 citation statements)

References 23 publications

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“…The PRM algorithm [32] involves the calculation of the ratio between the fired pressure and the corresponding motored cylinder pressure (p mot ) at each crank angle. The curve p mot versus h can be measured experimentally, in the absence of combustion, when the engine is run by an electrical machine, or can be approximated by means of a polytropic evolution (the latter solution is mandatory if the engine is supercharged or turbocharged).…”

Section: Pressure-based Direct Methods For Combustion Simulationmentioning

confidence: 99%

“…FPR reaches a maximum value for stoichiometric mixtures and decreases as the excess of air, EGR or residual gas are increased; therefore, it can also be useful as an indicator of the charge dilution of the combustion system. The MPR, once it has been normalized to FPR, provides the pressure ratio management procedure for the estimation of x b [32]: …”

Section: Pressure-based Direct Methods For Combustion Simulationmentioning

confidence: 99%

“…Some pressure-based direct approaches, for instance, the polytropic volume method [30], have the aim of maintaining the simplicity and the small computational efforts of the RW method, but have been developed to overcome its inherent limitations [31]. Another example is that of the Pressure-Ratio Management (PRM) method, developed for naturally aspired spark-ignition engines, which involves the calculation of the ratio of the fired pressure to the corresponding motored in-cylinder pressure at each crank angle [32]. This methodology, combined with optical analysis, has also been applied to combustion investigation in [33].…”

Section: Introductionmentioning

confidence: 99%

“…The simple PRM approach has been modified to obtain the Pressure Departure Ratio (PDR) algorithm [32], which is more suitable for diesel propulsion systems. In the PDR model, the ratio of the fired to the motored pressure is corrected by means of two constants, which should be calibrated for each engine setup.…”

Section: Introductionmentioning

confidence: 99%

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In-cylinder pressure-based direct techniques and time frequency analysis for combustion diagnostics in IC engines

D’Ambrosio

Ferrari

Galleani

2015

Energy Conversion and Management

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Section: Pressure-based Direct Methods For Combustion Simulationmentioning

confidence: 99%

Section: Pressure-based Direct Methods For Combustion Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In-cylinder pressure-based direct techniques and time frequency analysis for combustion diagnostics in IC engines

D’Ambrosio

Ferrari

Galleani

2015

Energy Conversion and Management

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“…The effect of this situation is increased fuel consumption. Due to not effective combustion process of mixture in cylinders, the composition of exhaust gas is changed [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Study on Influence of Air Duct Throttling on Exhaust Gas Composition in Marine Four-Stroke Diesel Engine

Kowalski¹

2015

Journal of KONES. Powertrain and Transport

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Energy efficiency trade-off with phasing of HCCI combustion

Reader

Asad

Zheng

2011

Int. J. Energy Res.

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SUMMARY Homogeneous charge compression ignition (HCCI) combustion in diesel engines offers the potential of simultaneous low NOx and soot emissions. However, this is normally accompanied by high hydrocarbon (HC) levels in the exhaust and an early combustion phasing before the top‐dead‐center (TDC) that may drain out substantial amounts of fuel energy from the engine cycle. Exhaust gas recirculation is usually applied to delay the onset of combustion, thereby shifting the phasing of the heat release close to the TDC. Although the retarded phasing improves the engine energy efficiency, a significant increase in HC and carbon monoxide emissions will deteriorate the combustion efficiency. Therefore, an inherent trade‐off exists between the combustion phasing and the combustion efficiency that needs to be minimized for improved energy efficiency. In this work, both theoretical and experimental studies have been carried out to evaluate the combustion efficiency‐phasing (CEP) trade‐off. Engine tests have been conducted to analyze the losses in combustion (burning) and phasing efficiencies, and along with theoretical analyses, the CEP trade‐off has been evaluated in terms of a ‘coefficient of combustion inefficiency’ (CCI). The CCI quantitatively correlates the losses in combustion and phasing efficiencies and provides a reference for improving the combustion phasing of the HCCI operation vis‐à‐vis the combustibles in the exhaust. The focus of this research is to carry out a quantitative analysis of the energy efficiency of HCCI cycles. Copyright © 2011 John Wiley & Sons, Ltd.

show abstract

Fast heat release characterization of a diesel engine

Cited by 62 publications

References 23 publications

In-cylinder pressure-based direct techniques and time frequency analysis for combustion diagnostics in IC engines

In-cylinder pressure-based direct techniques and time frequency analysis for combustion diagnostics in IC engines

Laboratory Study on Influence of Air Duct Throttling on Exhaust Gas Composition in Marine Four-Stroke Diesel Engine

Energy efficiency trade-off with phasing of HCCI combustion

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