2018
DOI: 10.1177/1468087417748837
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Study on transient emission spikes reduction of a heavy-duty diesel engine equipped with a variable intake valve closing timing mechanism and a two-stage turbocharger

Abstract: The overall performance and emission during a speed/torque versus time transient cycle are investigated in a heavy-duty truck engine equipped with an intake valve closing timing mechanism and a two-stage turbocharger system (high-pressure turbine is variable geometry turbine). The performance discrepancy analysis between steady-state and transient operation is completed based on a fairly optimized steady-state baseline. The result shows that during the transient operation, the transient NOx emission can track … Show more

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Cited by 13 publications
(8 citation statements)
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“…The combination of EGR and LIVC helped to improve the NO x -soot trade-off relation [13,14]. Similarly, Zhou et al [17] achieved a reduction in particle matter emissions by 32.9%, with a small increase in NO x by applying LIVC strategy and an optimal control of the VGT (Variable Geometry Turbine) and EGR during realistic transient conditions.…”
Section: Intake Valve Closing (Ivc)mentioning
confidence: 90%
“…The combination of EGR and LIVC helped to improve the NO x -soot trade-off relation [13,14]. Similarly, Zhou et al [17] achieved a reduction in particle matter emissions by 32.9%, with a small increase in NO x by applying LIVC strategy and an optimal control of the VGT (Variable Geometry Turbine) and EGR during realistic transient conditions.…”
Section: Intake Valve Closing (Ivc)mentioning
confidence: 90%
“…The combination of EGR and LIVC helped to improve the NO x -soot trade-off relation. 10,11 Similarly, Zhou et al 14 achieved a reduction in particle matter emissions by 32.9% with a small increase in NO x by applying LIVC strategy and an optimal control of the variable geometry turbine (VGT) and EGR during realistic transient conditions.…”
Section: Introductionmentioning
confidence: 99%
“…Still, despite their advantages, Diesel engines are one of the major atmospheric pollutant contributors, such as NOx and particulate matter (PM). The aforementioned concerns have motivated policy makers and engine manufacturers to introduce more rigid and strict emission regulations [2,3]; among them, water-emulsified fuels can simultaneously reduce both NOx and PM emissions [4] without increasing cost.…”
Section: Introductionmentioning
confidence: 99%