초록 ▼

A control method comprises the steps of: selectively supplying fuel gas to some cylinders (4) of an engine (2) on the basis of the power required from it; selecting the quantity of fuel gas supplied to each of the cylinders (4); and selecting, in successive engines cycles, different cylinders (4) to

A control method comprises the steps of: selectively supplying fuel gas to some cylinders (4) of an engine (2) on the basis of the power required from it; selecting the quantity of fuel gas supplied to each of the cylinders (4); and selecting, in successive engines cycles, different cylinders (4) to supply with fuel gas according to a predetermined scheme of rotation.

대표청구항 ▼

1. A method for controlling the operation of a throttled fuel injection system for a multi-cylinder internal combustion engine which can operate selectively with gasoline injection or fuel gas injection,wherein the throttled fuel injection system includes a plurality of electric fuel gas injectors a

1. A method for controlling the operation of a throttled fuel injection system for a multi-cylinder internal combustion engine which can operate selectively with gasoline injection or fuel gas injection,wherein the throttled fuel injection system includes a plurality of electric fuel gas injectors associated with respective cylinders; a main duct for aspiration of air; a butterfly valve disposed within the main duct; and a control member for controlling the butterfly valve, the method comprising: supplying fuel gas to the cylinders, wherein in each engine cycle the fuel gas is supplied selectively to some of the cylinders of the engine based on the power required; generating a speed signal (RPM) correlated to a speed of the engine; generating a first position signal (.PHI.) correlated to a phase of the engine; generating a second position signal (.theta.) correlated to a position of the control member; selecting, in said each engine cycle and based on the speed signal (RPM) and the position signals (.PHI., .theta.), a number of the injectors to be actuated and which of the injectors to actuate, wherein the injection system includes a gasoline injection pump; a de-coupler for selectively de-coupling the control member from the butterfly valve and a regulator for regulating a position of the butterfly valve, generating a stop gasoline supply command signal for the injection pump; generating a de-coupling command signal for the selective de-coupler; generating an open command signal for the regulator for regulating the position of the butterfly valve; and generating an actuation signal for each of the injectors to be actuated.