Abstract
Latest emission regulations strongly push toward a reduction of fuel consumption in order to reduce CO2 emissions. To achieve this goal, gasoline direct injection engines are one of the best candidate. GDI engines, in fact, can work in stratified operations allowing stable combustions with ultra-lean mixtures that allow a strong reduction of toxic emissions coupled towith fuel consumption reduction. GDI stratified operation needs the use of multiple fuel injections, splitting the quantity of injected fuel into several and shorter shots in order to reduce the cylinder wall impingement. However, small injections force solenoid injectors to work in their ballistic mode, with a highly nonlinear correlation between electrical command pulse width and the actual amount of injected fuel. In the present chapter, the nonlinear phenomena correlated with the injection process in GDI engines are analyzed and an effective compensation method is proposed.
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M. Parotto, S. Sgatti, F. Sensi, Advanced GDI injector control with extended dynamic range. SAE Technical Paper 2013-01-0258 (2013). doi:10.4271/2013-01-0258
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Taglialatela Scafati, F., Lavorgna, M., Mancaruso, E., Vaglieco, B. (2018). Identification and Compensation of Nonlinear Phenomena in Gasoline Direct Injection Process. In: Nonlinear Systems and Circuits in Internal Combustion Engines. SpringerBriefs in Applied Sciences and Technology(). Springer, Cham. https://doi.org/10.1007/978-3-319-67140-6_6
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DOI: https://doi.org/10.1007/978-3-319-67140-6_6
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