Valve controller for controlling the suction valve of an internal-combustion engine

摘要

The lever ratio of rocker arms of an internal-combustion engine is varied to control intake air flow so that the internal-combustion engine can be easily restarted. A query is made to see if the present swing angle is equal to an optimum swing angle for restarting the internal-combustion engine and, if the response is negative, a query is made to see if a motor for changing the lever ratio of the rocker arms is to be driven for rotation in the normal direction. If the motor is to be driven for rotation in the normal direction, the motor is driven accordingly. If the motor is to be driven for rotation in the reverse direction, the motor is driven accordingly.