A method of determining opening of an intake valve (10) of an internal combustion engine (1), the method including the steps of : determining the time pattern of an intake pressure (P) in an intake manifold (9) of the internal combustion engine (1), the ti...

A method for controlling a direct injection system (1) of common-rail type of an internal combustion engine (2); the direct injection system (1) has: a fuel tank (10), a low pressure pump (8) which draws from the tank (10), and a high pressure pump (6) whi...

Method for regulation of currents during phases of stoppage in electromagnetic actuators, in which an actuator (1) is connected to a valve (2) and includes a mobile unit (3), a sensor (12) and a first and a second electromagnet (6a,6b), which receive respe...

A method for controlling the titre of the air-fuel mixture in an internal combustion engine (2) provided with at least two cylinders (3), in which the exhaust gas present in a common exhaust manifold (6) is analysed in order to measure at least two success...

A method for estimating the stoichiometric ratio of fuel for a control system of an internal combustion engine including an oxygen sensor (4, 26) disposed along an exhaust duct (6) and supplying a composition signal (V lambda ) and a control unit (5, 27) w...

A pressure regulator (1) for fuel supply systems, the regulator (1) being provided with a regulation valve (10) which is normally closed, which is provided with a valve body (14) moving in a control direction (15) in order to engage a fixed valve seat (13)...

A butterfly body (1) provided with a valve body (2) having a through duct (3), a butterfly valve (4) moving on command within the through duct (3) in order to regulate the flow of fluid through this through duct (3) and a device (5) for moving the butterfl...