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专利名称：Method of controlling injection of an
internal combustion engine as a function offuel quality
发明人：Marco Mauro,Ugo Bolla,Francesco
Pastorelli,Nelson Santamaria,Marco Ciasullo
申请号：US09428520申请日：19991028公开号：US06279560B1公开日：20010828
专利附图：
摘要：A method of controlling injection of an engine having an oxygen concentration
sensor generating a composition signal correlated to the composition of the exhaustgases, and a number of injectors for injecting fuel for an operating injection time in eachoperating state of the engine, and each of which is assigned, in each operating state ofthe engine, a respective calibration injection time determined at an initial enginecalibration stage using a reference fuel. In a given operating state of the engine, thecontrol method including the steps of: determining a number of operating values of acontrol parameter as a function of the composition signal and of a proportional-integralcontrol function; determining an intermediate value of the control parameter as afunction of the aforementioned operating values of the control parameter; determining acurrent correction injection time as a function of the intermediate value of the controlparameter, and of a reference value of the control parameter determined at the initialengine calibration stage using the reference fuel and relative to the operating state ofthe engine; and determining an operating injection time as a function of a calibrationinjection time relative to the operating state of the engine, of a closed-loop injection timedepending on the control parameter, and of the current correction injection time.
申请人：C.R.F. SOCIETÁ CONSORTILE PER AZIONI
代理机构：Crowell & Moring LLP
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