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RESEARCH TOPIC


COORDINATED DESIGN AND CONTROL OF ENGINE AND AFTERTREATMENT SYSTEMS FOR REDUCED
VEHICULAR NOX AND CO2 EMISSIONS

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Views 101


ABOUT THIS RESEARCH TOPIC

Internal combustion engines have become cleaner and more fuel efficient over the
past decade. However, additional stringent standards are being instituted over
the next decade that will require further simultaneous reduction of both NOx and
CO2. These standards are already being implemented for commercial and passenger
vehicles, while off-highway applications are predicted to see tightening
standards. Meeting these challenges will require coordinated advancements to
both the engine and aftertreatment systems. Today's aftertreatment systems are
temperature sensitive for conversion of emissions such as NOx, CO, HC, as well
as ammonia storage on SCR catalysts. Therefore, proper management of the engine
exhaust temperature and all aspects of temperature control, both entering and
exiting the catalysts, need to be optimized to achieve simultaneous reduction in
both NOx and CO2. Although diesel engines are predominantly used today, IC
engines with various low-carbon and carbon-neutral fuels, as well as different
combustion modes, are actively being researched and developed, along with
various levels of hybridization. These alternative fuels, combustion modes, and
levels of hybridization have different impacts on aftertreatment configuration
and operation that must be explored. For example, methane slip in natural
gas-fueled engines is a great challenge, as methane is a significantly more
potent greenhouse gas than CO2. Similarly, engine shut-off in some hybrids can
aggravate the thermal management challenge. Further, as powertrains become more
electrified, 48V systems along with other voltages are applicable in the pursuit
of reducing overall NOx and CO2 emissions.

Contributions to this Research Topic include manuscripts describing advancements
in engine and aftertreatment control and design toward the goal of reduced NOx
and CO2 in vehicle applications. Approaches utilizing conventional or advanced
combustion modes with conventional or alternative fuels are welcome.
Contributions that focus on particularly challenging operating conditions, such
as low load operations, are also encouraged. Topics include, but are not limited
to:
• Advances in engine technologies that can be coupled with aftertreatment
systems for optimal control;
• System approaches for optimizing the engine and aftertreatment system;
• Advancements in exhaust aftertreatments inclusive of catalyst technologies;
• Solutions to challenging operating conditions and drive cycles, such as low
load operation;
• Exhaust heating technologies, which may include electric heaters, fuel burners
along with other novel technologies;
• Experimental and/or numerical studies of novel system approaches and their
impact on efficiency and emissions;
• Effects of hybridization on engine and aftertreatment system control and
design.


Keywords: NOx reduction, CO2 reduction, Fuel economy improvement, Exhaust
temperature management, Selective catalytic reduction (SCR), Variable valve
actuation, Cylinder deactivation, Compression ratio, Electrical heater, Fuel
burner, Light off SCR, Dual SCR, 48V systems, EGR pump, High efficiency
turbocharger


Important Note: All contributions to this Research Topic must be within the
scope of the section and journal to which they are submitted, as defined in
their mission statements. Frontiers reserves the right to guide an out-of-scope
manuscript to a more suitable section or journal at any stage of peer review.

Internal combustion engines have become cleaner and more fuel efficient over the
past decade. However, additional stringent standards are being instituted over
the next decade that will require further simultaneous reduction of both NOx and
CO2. These standards are already being implemented for commercial and passenger
vehicles, while off-highway applications are predicted to see tightening
standards. Meeting these challenges will require coordinated advancements to
both the engine and aftertreatment systems. Today's aftertreatment systems are
temperature sensitive for conversion of emissions such as NOx, CO, HC, as well
as ammonia storage on SCR catalysts. Therefore, proper management of the engine
exhaust temperature and all aspects of temperature control, both entering and
exiting the catalysts, need to be optimized to achieve simultaneous reduction in
both NOx and CO2. Although diesel engines are predominantly used today, IC
engines with various low-carbon and carbon-neutral fuels, as well as different
combustion modes, are actively being researched and developed, along with
various levels of hybridization. These alternative fuels, combustion modes, and
levels of hybridization have different impacts on aftertreatment configuration
and operation that must be explored. For example, methane slip in natural
gas-fueled engines is a great challenge, as methane is a significantly more
potent greenhouse gas than CO2. Similarly, engine shut-off in some hybrids can
aggravate the thermal management challenge. Further, as powertrains become more
electrified, 48V systems along with other voltages are applicable in the pursuit
of reducing overall NOx and CO2 emissions.

Contributions to this Research Topic include manuscripts describing advancements
in engine and aftertreatment control and design toward the goal of reduced NOx
and CO2 in vehicle applications. Approaches utilizing conventional or advanced
combustion modes with conventional or alternative fuels are welcome.
Contributions that focus on particularly challenging operating conditions, such
as low load operations, are also encouraged. Topics include, but are not limited
to:
• Advances in engine technologies that can be coupled with aftertreatment
systems for optimal control;
• System approaches for optimizing the engine and aftertreatment system;
• Advancements in exhaust aftertreatments inclusive of catalyst technologies;
• Solutions to challenging operating conditions and drive cycles, such as low
load operation;
• Exhaust heating technologies, which may include electric heaters, fuel burners
along with other novel technologies;
• Experimental and/or numerical studies of novel system approaches and their
impact on efficiency and emissions;
• Effects of hybridization on engine and aftertreatment system control and
design.


Keywords: NOx reduction, CO2 reduction, Fuel economy improvement, Exhaust
temperature management, Selective catalytic reduction (SCR), Variable valve
actuation, Cylinder deactivation, Compression ratio, Electrical heater, Fuel
burner, Light off SCR, Dual SCR, 48V systems, EGR pump, High efficiency
turbocharger


Important Note: All contributions to this Research Topic must be within the
scope of the section and journal to which they are submitted, as defined in
their mission statements. Frontiers reserves the right to guide an out-of-scope
manuscript to a more suitable section or journal at any stage of peer review.


ABOUT FRONTIERS RESEARCH TOPICS

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Articles, Research Topics unify the most influential researchers, the latest key
findings and historical advances in a hot research area! Find out more on how to
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TOPIC EDITORS


JAMES E MCCARTHY

Eaton (United States)

Southfield, United States

Follow
 * 9 publications


CODY ALLEN

University of Illinois at Urbana-Champaign

Champaign, United States

Follow


GREGORY SHAVER

Purdue University

West Lafayette, United States

Follow
 * 52 publications


DHEERAJ BHARADWAJ GOSALA

German Aerospace Center (DLR)

Cologne, Germany

Follow
 * 15 publications


SUBMISSION DEADLINES

20 July 2022 Abstract 20 September 2022 Manuscript

 * Author guidelines


PARTICIPATING JOURNALS

Manuscripts can be submitted to this Research Topic via the following journals:

Frontiers inMechanical Engineering

Engine and Automotive Engineering


ARTICLES

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TOPIC EDITORS


JAMES E MCCARTHY

Eaton (United States)

Southfield, United States

Follow
 * 9 publications


CODY ALLEN

University of Illinois at Urbana-Champaign

Champaign, United States

Follow


GREGORY SHAVER

Purdue University

West Lafayette, United States

Follow
 * 52 publications


DHEERAJ BHARADWAJ GOSALA

German Aerospace Center (DLR)

Cologne, Germany

Follow
 * 15 publications


SUBMISSION DEADLINES

20 July 2022 Abstract 20 September 2022 Manuscript

 * Author guidelines


PARTICIPATING JOURNALS

Manuscripts can be submitted to this Research Topic via the following journals:

Frontiers inMechanical Engineering

Engine and Automotive Engineering


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