Other

Claudio Zanet

Marco Mauro

Alessandro Volpin

Stefano Ciuti

Enrico Fornatto

A control method for controlling injection of an engine having an oxygen concentration sensor generating a composition signal as a function of the oxygen difference in the exhaust gases with respect to the stoichiometric condition of the burnt air/fuel mixture, and a number of injectors for injecting fuel for an operating injection time in each operating state of the engine, and each of which is assigned, in each operating state of the engine, a respective calibration injection time determined at an initial engine calibration stage using a reference fuel. In a given operating state of the engine, the control method including the steps of: determining an intermediate injection time as a function of a number of operating injection times of the injectors; calculating a current correction coefficient as a function of the intermediate injection time and of a reference injection time determined at the initial engine calibration stage using the reference fuel; and determining an operating injection time as a function of the calibration injection time relative to the operating state of the engine, of a closed-loop injection time depending on the composition signal, and of the current correction coefficient.

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Torino, Italy

Claudio Zanet