15
·
Develop advanced airside heat rejection concepts and heat transfer
enhancement techniques that will result in more compact heat exchangers.
enhancement techniques that will result in more compact heat exchangers.
·
Perform fundamental studies of fouling mechanisms and mitigation, relative
to selected enhanced surfaces, including exhaust side of EGR cooler.
to selected enhanced surfaces, including exhaust side of EGR cooler.
Simulation Code Development
·
Develop nonproprietary system code of zero or one dimension to run on a PC;
initial task would be a paper study to determine what is already available (e.g.,
codes, submodels, and validation data) and what the automobile industry is
doing that may bear on heavy vehicles.
initial task would be a paper study to determine what is already available (e.g.,
codes, submodels, and validation data) and what the automobile industry is
doing that may bear on heavy vehicles.
·
Develop/demonstrate/validate computational fluid-dynamic (CFD) models
and simulation codes for underhood airflow and temperatures, to be used in
integrating the heat exchangers (radiator, charge-air cooler, and condenser)
under the hood; couple underhood airflow prediction capability with DOE's
current aerodynamics code development.
and simulation codes for underhood airflow and temperatures, to be used in
integrating the heat exchangers (radiator, charge-air cooler, and condenser)
under the hood; couple underhood airflow prediction capability with DOE's
current aerodynamics code development.
·
Generate standard experimental data base on thermal performance of systems
and subcomponents for use in code validation (laboratory component testing
and field testing of instrumented on-highway trucks).
and subcomponents for use in code validation (laboratory component testing
and field testing of instrumented on-highway trucks).
·
Work with code developers, OEMs, and suppliers to develop a consistent
interface specification so that data can be efficiently transferred between codes
and code modules.
interface specification so that data can be efficiently transferred between codes
and code modules.
·
Develop framework for a simulation code that ultimately can be used to
predict truck fuel economy and emissions for an entire drive cycle (possible
sub-models would include power-train, vehicle load prediction, control
systems, cooling systems, external aerodynamics, underhood airflow, cooling
and refrigeration, lubrication cooling, and cabin airflow).
predict truck fuel economy and emissions for an entire drive cycle (possible
sub-models would include power-train, vehicle load prediction, control
systems, cooling systems, external aerodynamics, underhood airflow, cooling
and refrigeration, lubrication cooling, and cabin airflow).
Sensor and Control Components Development
·
Real-time NO
x
sensor.
·
Reliable/robust sensors for critical engine temperatures and coolant and
airflow for computer control and feedback.
airflow for computer control and feedback.