In a multi-cylinder internal combustion engine provided with a system for the variable actuation of the intake valves, such system is used to vary the amount of air taken in by each cylinder so as to reduce to the minimum or entirely eliminate the differen...

A spark ignition four stroke internal combustion engine comprises two intake valves and two exhaust valves (7, 70) for each cylinder, arranged around a central spark plug and it is provided with means for varying the lift of the intake valves (7) between a...

An automotive electronic control unit (14) for an internal combustion engine (1) comprising at least one cylinder (2) provided with at least one intake valve (3) and at least one exhaust valve (6), and a variable intake and/or exhaust valve actuation syste...

The method involves performing hydraulic control of a gas shuttle valve (2) and adjusting a hydraulic component i.e. magnetic valve (8), from first position to second position with a control signal. Time duration required for changing the component from fi...

In a multi-cylinder internal combustion engine, equipped with an electronically controlled hydraulic system for the variable operation of the engine's inlet valves (1), an indicator of the differences in the amount of air aspirated by the cylinders (20) of...