Efficiency of the Manifolds of Turbocharged Engines

Winterbone, D. E.; Nichols, Jeffrey; Alexander, G. I.

doi:10.1243/pime_proc_1985_199_150_01

Cited by 15 publications

(4 citation statements)

References 3 publications

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“…This is a handicap of the manufactured PEM that reduces the benefits during the transient evolution. Likewise, it is important to consider that a manifold with a higher internal volume deadens pressure pulses and therefore increases turbine efficiency, but it is also true that higher internal volume can reduce kinetic energy of exhaust gases [17,18].…”

Section: Discussion Of the Experimental Resultsmentioning

confidence: 99%

Design of an exhaust manifold to improve transient performance of a high-speed turbocharged diesel engine

Galindo

Luján

Serrano

et al. 2004

Experimental Thermal and Fluid Science

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Section: Discussion Of the Experimental Resultsmentioning

confidence: 99%

Design of an exhaust manifold to improve transient performance of a high-speed turbocharged diesel engine

Galindo

Luján

Serrano

et al. 2004

Experimental Thermal and Fluid Science

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“…Additional equations are given to close the set [equations (5), (6) and (7)], as follows: equation of state for the semi-ideal gas…”

Section: Exhaust System Model Of Thermodynamic and Flow Processesmentioning

confidence: 99%

Operation of exhaust systems of turbocharged diesel engines identified by means of exergy analysis

Fijałkowski

Nakonieczny

1997

Proceedings of the Institution of Mechanical Engineers, Part D:

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A method and results of the analysis of exergy losses that occur in the exhaust system of a turbocharged diesel engine are presented. The aim of the work was to distinguish nodes in the system where exergy losses arise and make precise assessment of losses generated there. Losses were found to be attributable to three main sources: high velocity flow of viscous gas through variable geometry ducts; irreversibility of thermodynamic processes; and heat exchange through the walls of the exhaust system. The adopted model of generating exergy losses has made it possible to carry out a computer simulation for an exemplary turbocharged engine. The results are illustrated in diagrams and discussed.

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“…In this, transmission of energy from the cylinder to exhaust valve using pipes and junctions to the turbocharger turbine was investigated. 25 According to F. Paryi et al, the influence of the geometry of exhaust junction on flow dynamics of the exhaust gases was investigated. The characteristics of the wave reflected at the exhaust manifold junction and the energy pulses carried to the lateral branch of the junction were two important experimental findings from the authors.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of turbocharged SI engine by post-oxidation enhancement in exhaust gas in-homogeneity

Kumar

Moeeni

Kuboyama

et al. 2020

International Journal of Engine Research

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In this research, the improvement of mixing and pulsation in exhaust manifold with a design and implementation of bypass adapter at exhaust port were deeply investigated. This in-turn can improve the post-oxidation phenomena and hence emissions and engine performance could be enhanced. This research investigation includes 1-D, 3-D simulations and experimental validation on a 4-cylinder turbocharged spark ignition (SI) engine. Firstly, the 1-D and 3-D simulation models were developed and calibrated with the experimental results. Then, the simulations were used for the detailed investigation of mixing and pulsation in exhaust manifold with and without bypass adapter. Thereafter, experimental test for the post-oxidation were conducted with and without consideration of the bypass adapter and results were compared. From the simulation and experimental results, it was proven that by using bypass adapter at the exhaust port, the mixing of exhaust gas species was observed to be significantly improved to some extent. Also, the unbalance between exhaust port and turbocharger upstream gas species were reduced. This also reduced the exhaust gas pulsation. By the improvement of mixing between scavenged O2 and unburned gas species, the post-oxidation reaction was also noted to have improved and consequently the emissions and turbo-speed were found to be better that led to an improved IMEP and thermal efficiency of the engine.

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Efficiency of the Manifolds of Turbocharged Engines

Cited by 15 publications

References 3 publications

Design of an exhaust manifold to improve transient performance of a high-speed turbocharged diesel engine

Design of an exhaust manifold to improve transient performance of a high-speed turbocharged diesel engine

Operation of exhaust systems of turbocharged diesel engines identified by means of exergy analysis

Performance improvement of turbocharged SI engine by post-oxidation enhancement in exhaust gas in-homogeneity

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