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Team from GM, Ford, FCA reviews how to calculate engine efficiency benefits of high octane fuels

Green Car Congress

Considering vehicles and fuels as a system, such fuel changes would be supported if the net effect of light-duty vehicle efficiency improvements and fuel production impacts yielded reductions in fuel consumption, emissions, resource consumption, and/or cost. Shelby, and William M. —Leone et al. Leone, James E. 5b01420.

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Ford / AVL study concludes mid-level ethanol blend attractive as a long-term future fuel for use in optimized engines in US

Green Car Congress

Enrichment of the fuel mixture at high-speed, high-load conditions is currently used to reduce exhaust temperature to avoid damage to engine or emissions aftertreatment components. Thus, the benefit of increased CR enabled by increasing ethanol content is engine design specific. Reduced enrichment. benefits for CO 2 relative to E10, but 2.8%

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Developing Fords EcoBoost Combustion System

Green Car Congress

Some of the droplets may escape into the exhaust system and result in high UHC emissions. Jianwen Yi, Brad VanDerWege, Corey Weaver, Zheng Xu, George Davis, Brett Hinds, Andreas Schamel, Steven Wooldridge, Gary Coulson, James Hilditch, Claudia Iyer, Peter Moilanen, George Papaioannou, David Reiche, Michael Shelby.

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