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Performance Potential of an Ethanol Fueled Turbocharged Direct Injection Otto Engine
Technical Paper
2012-36-0508
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The search for better energetic efficiency of the flexible fuel
engines will guide the next design changes in this technology. The
use of direct injection and the downsizing of volumetric
displacement compensated by supercharging is a possible solution to
reduce the fuel consumption. The direct injection brings the
thermodynamic benefits of the charge cooling; the reduced
displacement reduces the pumping work in partial loads and engine
friction, while the supercharging allows the performance of a
bigger engine. The combination of these technologies with hydrated
ethanol (E100 or AEHC) represents a performance and CO₂ reduction
opportunity, but also a challenge in terms of cold start and
durability.
The objective of this study is to evaluate and compare the
behavior and the potential in full load conditions of an engine
equipped with direct fuel injection and turbocharger, using
Brazilian Hydrated Bioethanol (called as E100) and Brazilian
gasoline (called E22). Instead of using E100 to raise the engine
performance (torque and power), with the adjustment of manifold
pressure, spark advance and air-to-fuel rate, was possible to take
the physical and chemical characteristics of E100 to increase the
engine efficiency with same performance, without compromising the
main engine parameters for durability.
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Citation
Takamura, P. and Guilherme, R., "Performance Potential of an Ethanol Fueled Turbocharged Direct Injection Otto Engine," SAE Technical Paper 2012-36-0508, 2012, https://doi.org/10.4271/2012-36-0508.Data Sets - Support Documents
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References
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