Design Optimization
Methodologies for Advanced and Hybrid Diesel Powertrains
Abstract:
The specific challenge for the diesel engine group is to develop
a methodology to optimize engine performance, fuel economy,
and emissions characteristics. Control strategies and operating
conditions are also being investigated in regard to their effects
on the engine's torque vs. speed map, as well as to the overall
performance of the vehicle being modeled.
Background:
Increasingly stringent federal regulations on fuel economy and
emissions have compelled researchers to explore rigorous and systematic
methodologies for the optimization of automotive powertrains.
|
Researchers:
George Delagrammatikas
Dennis Assanis
Zoran Filipi
Sponsors:
Automotive Research Center (TACOM)
GMSRL |
| Goals
of the work:
The
methodologies developed must be generic enough to be applied to
advanced diesel powertrains and diesel-based HEV's. Further computational
studies focused on variable compression ratio engines, variable
valve timing, variable geometry turbochargers and continuously
variable transmissions. |
Accomplishments:
A multi-disciplinary research initiative was conducted at the
University of Michigan under the auspices of the Automotive Research
Center, to link automotive systems models, such that the optimization
of each subsystem and component could be linked and coordinated
to solve a systems-level problem. |
| Publications:
Assanis,
D., Delagrammatikas, G., Fellini, R., Filipi, Z., Liedtke, J.,
Michelena, N., Papalambros, P., Reyes, D., Rosenbaum, D., Sales,
A., and Sasena, M., "An Optimization Approach to Hybrid Electric
Propulsion System Design," Journal
of Mechanics of Structures into Machines, 27(4), 393-421, 1999.
Panagiotidis,
M., Delagrammatikas, G., Assanis, D., "Development and Use of
a Regenerative Braking Strategy for a Parallel Hybrid Electric
Vehicle," SAE Paper 2000-01-0995. |
