Launch Performance Optimization of GTDI-DCT Powertrain

Event
SAE 2015 World Congress & Exhibition
Authors Abstract
Content
A direct trajectory optimization approach is developed to assess the capability of a GTDI-DCT Powertrain, with a Gasoline Turbocharged Direct Injection (GTDI) engine and Dual Clutch Transmission (DCT), to satisfy stringent drivability requirements during launch. The optimization is performed directly on a high fidelity black box powertrain model for which a single simulation of a launch event takes about 8 minutes. To address this challenging problem, an efficient parameterization of the control trajectory using Gaussian kernel functions and a Mesh Adaptive Direct Search optimizer are exploited. The results and observations are reported for the case of clutch torque optimization for launch at normal conditions, at high altitude conditions and at non-zero grade conditions. The results and observations are also presented for the case of simultaneous optimization of multiple actuator trajectories at normal conditions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2015-01-1111
Pages
10
Citation
Cho, D., Gupta, R., Dai, E., McCallum, J. et al., "Launch Performance Optimization of GTDI-DCT Powertrain," Engines 8(3):1398-1407, 2015, https://doi.org/10.4271/2015-01-1111.
Additional Details
Publisher
Published
Apr 14, 2015
Product Code
2015-01-1111
Content Type
Journal Article
Language
English