This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Experimental Optimization of the Cold Start for the EcoBoost Engine
Technical Paper
2009-01-1491
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
An experimental methodology was developed and applied to optimize the EcoBoost turbo-charged direct injection engine cold start. Specific focus was on minimizing hydrocarbon and NOx emissions and IMEP variation for the catalyst heating portion of the engine start. The methodology uses steady state single cylinder engine testing with conditioned fluids to screen main factors affecting the emissions and stability responses. The main factors include injector spray pattern design, piston crown design, injection timing, fuel rail pressure, valve timing, and port heat flow. Following the steady state testing, a transient single cylinder engine test was conducted at the optimized conditions to verify emissions and engine stability. This step typically produces results more closely correlated to actual engine starts when compared with the steady state single cylinder engine testing due to better approximation of the engine thermal conditions. Finally, the optimized hardware and operating strategy are run on a transient multi-cylinder engine cold start test to identify any further optimization required to meet program emissions and engine performance targets.
Recommended Content
Authors
Topic
Citation
Reiche, D., Wooldridge, S., Moilanen, P., and Davis, G., "Experimental Optimization of the Cold Start for the EcoBoost Engine," SAE Technical Paper 2009-01-1491, 2009, https://doi.org/10.4271/2009-01-1491.Also In
SI Combustion and Direct Injection SI Engine Technology, 2009
Number: SP-2241; Published: 2009-04-20
Number: SP-2241; Published: 2009-04-20
References
- Kapp, D. Schamel, A. Hinds, B. Weaver, C. 2008
- Yi, J. Wooldridge, S. Coulson, G. Hilditch, J. Iyer, C. Moilanen, P. Papaioannou, G. Reiche, D. Shelby, M. VanDerWege, B. Weaver, C. Xu, Z. Davis, G. Hinds, B. Schamel, A. Development and Optimization of Ford 3.5L V6 EcoBoost Combustion System presented at SAE World Congress, 2009-01-1494 2009
- Xu, Z. Yi, J. Wooldridge, S. Reiche, D. Curtis, E. Papaioannou, G. Modeling the Cold Start of the Ford 3.5L V6 EcoBoost Engine presented at SAE World Congress, 2009-01-1493 2009
- Iyer, C. Yi, J. 3D CFD Upfront Optimization of the In-Cylinder Flow of the 3.5L V6 EcoBoost Engine presented at SAE World Congress, 2009-01-1492 2009
- Hilbert, H. S. Boggs, D. L. Schechter, M. M. The Effects of Small Fuel Droplets on Cold Engine Emissions Using Ford’s Air Forced Injection System SAE 952479 1995