Model Based E85 Cold Start Optimization for DISI Engines

Liebsch, S.; Dingel, Oliver; Maaß, Jochen; Günther, Michael; Kratzsch, Matthias; Zwahr, Steffen

doi:10.4271/2009-01-1909

Cited by 7 publications

(1 citation statement)

References 4 publications

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“…The paper explores the advantages direct injection and high turbo charging may give to pure ethanol engines fully exploiting the reduced knock tendency and the increased heat of vaporization of ethanol when compared to gasoline. The high evaporation enthalpy of ethanol requires detailed examinations regarding the cold start behavior [16][17][18][19][20][21][22][23]. Various injection strategies should be adopted to avoid the fuel film on the piston top and ensure that the first injected mass of fuel could also be ignited [16].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Design of Pure Ethanol Engines

Boretti¹

2010

SAE Technical Paper Series

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Ethanol, unlike petroleum, is a renewable resource that can be produced from agricultural feed stocks. Ethanol fuel is widely used by flex-fuel light vehicles in Brazil and as oxygenate to gasoline in the United States. Ethanol can be blended with gasoline in varying quantities up to pure ethanol (E100), and most modern gasoline engines well operate with mixtures of 10% ethanol (E10). E100 consumption in an engine is higher than for gasoline since the energy per unit volume of ethanol is lower than for gasoline. The higher octane number of ethanol may possibly allow increased power output and better fuel economy of pure ethanol engines vs. flexifuel engines. High compression ratio ethanol only vehicles possibly will have fuel efficiency equal to or greater than current gasoline engines. The paper explores the impact some advanced technologies, namely downsizing, turbo charging, liquid charge cooling, high pressure direct injection, variable valve actuation may have on performance and emission of a pure ethanol engine. Results of simulations are described in details providing guidelines for development of new dedicated engines.

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