Alfa Romeo Auto S.p.a.

Alfa Lancia Industriale S.p.a.

Domenico D'Angelo

Marco Visconti

Luigi Bernardoni

Paolo Lanati

Alessandro Piccone

The valve unit comprises non-return valves disposed within the intake duct and formed from longitudinal channels and flaps which engage these latter. The channels are provided with seal gaskets at their edges and are formed with their base walls shaped on their outer side in such a manner as to improve the valve reliability and life. The flaps comprise fixing tabs which are clamped between ledges and support surfaces of the superposed channels.

Valve unit for an internal combustion engine intake duct, comprising

The device comprises a control center arranged to control a first and second ignition coil and to operate the engine under double ignition during normal use and under single ignition during full induction; in this latter case, ignition by the spark plugs of a first set is alternated with ignition by the spark plugs of a second set, for predetermined numbers of engine cycles.

Ignition device for an internal combustion engine with two spark plugs

A device is proposed for gasoline feeding to an internal combustion engine, comprising injectors for injecting gasoline in the nearby of intake valves under low- and medium-load operating conditions, and valve means to feed gasoline into the feed manifold under high-load operating conditions.

Gasoline feed device for internal combustion engine

In a multi-cylinder engine provided with several intake valves per cylinder and with the relative intake ducts, non-return valve means are provided in one of the intake ducts of each cylinder, in series with the respective intake valve.

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Monza, Italy

Domenico D'Angelo