Technology Opportuni1es Using E100 for CO2 Benefit F.Turkovics 07 de julho 2015
Overview
Introduc:on Brazilian Legisla:on Fuels in Brazil: Par:culari:es
Technology road map
Time to market Main Conclusions
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Introduc1on – Brazilian Legisla1ons
Brazilian future emission legisla:on will enforce a decay on CAFE InovarAuto: decree-‐law that imposes new limits
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SOURCE: “Global Comparison of Light-‐Duty Vehicle Fuel Economy/GHG Emissions Standards” ICCT – The Interna:onal Council on Clean Transporta:on – agosto/2011
Introduc1on – Fuel Par1culari1es
Brazilian market requires Flex Fuel engine opera:on The engine should work properly with mixtures between E18 and E100 Ethanol has several different proper:es in comparison with regular pure gasoline
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E100
High Octane Number
H/C Ra1o
Vaporiza1on
% of Oxygen Content
Energe1c Density
Lubricity and Oil dilu1on
Allows higher spark advances and increased compression ra:os
Higher H/C ra:o is beneficial for emissions
Upper vaporiza:on enthalpy leads to: • Enhanced engine
breathing • cold start difficul:es
Diminishes unburned emissions and decreases the Lower Hea:ng Value
Decrease in the Lower Hea:ng Value requires higher fuel mass delivery
Higher oil consump:on and poor lubricity features for ethanol
èLeads to engine wear intensifica:on
Technology
CO2 % Saving
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Stra:fied GDI + Turbo
E100 oportuni:es
Gasoline base engine
Technology Op1miza1on roadmap for internal combus1on engines and addi1onal CO2 benefit by using E100 Fuel
basics op1miza1on : Eficiency gain ~ 3 to 5%
Miller cycle technology : Eficiency gain ~ 2 % to 3 %
EGR : Eficiency gain ~ 1,5 % to 2,5 %
Variable compression ra1o Eficiency gain ~3,5 to
5 %
Lean burn combus1on Eficiency gain ~ 5 %
Low water content E100
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Short :me : Basics combus:on
op:miza:on
New engine technology road map
Mid :me un:l 5 years Ex : IGR , new cycle ( Miller / Atkinison )
EGR ....
Long term un:l 10 years Ex : variable compression rate , lean burn combus:on , water
injec:on .....
Impacts on combus1on system and ´1me to market ´
Main Conclusions
Has to to get o good state of the art with E100 fuel
Understand physical and chimical phenomena concerned To enfase remarkable proper:es for combus:on
E100 specific features can brings significant addicional CO2 benefit to gasoline engine technology as :
Miller cycle EGR Variable compression ra:o
..... Low water content ethanol introduc:on can be an addicional
opportunity for fuel consump:on reduc:on .
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