Patent ID: 8145405
Filing Date: 2012-03-27
Classification: F01L,F02D,F02M,Y02T

Abstract:
1. An internal-combustion engine, comprising: at least one intake valve for each cylinder, provided with elastic means for tending to push the valve towards a closed position; at least one camshaft for controlling said intake valves by utilization of respective tappets; and an electronically controlled hydraulic system for variable actuation of the intake valves, said system including: wherein said engine moreover comprises means for detecting the air-fuel ratio, designed to detect and/or calculate the effective value of the air-fuel ratio with which the engine is operating, to enable functions of self-adaptive control of the air-fuel ratio by means for electronic control, said engine being characterized in that the aforesaid electronic control means are programmed for performing, at least once in the life of the engine, an activity of supervision of the functions of self-adaptive control of the air-fuel ratio, said activity of supervision including: said electronic means being programmed for always applying throughout the subsequent life of the engine the aforesaid corrective value of the crank angle in controlling the system of actuation of the intake valves.