Patent ID: 11927168
Assignee: FERRARI S.P.A.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A control method to control a road vehicle (1) provided with an internal combustion engine (4) having a plurality of cylinders (18) and with a servo-assisted transmission (7); the control method comprises the steps of:
establishing a minimum spark advance which should not be exceeded in order to avoid the risk of knocking or spontaneous ignitions of the mixture; and
temporarily reducing, during a gear shift in the servo-assisted transmission (7), a torque generated by the internal combustion engine (4);
wherein the step of temporarily reducing the torque during the gear shift comprises the further steps of:
setting, for one single thermodynamic cycle of each cylinder (18), an actual spark advance, which is smaller than the minimum spark advance, so that the ignition takes place later than established by the minimum spark advance; and
cancelling the injection of fuel into each cylinder (18) in the thermodynamic cycle immediately following the thermodynamic cycle carried out with an actual spark advance smaller than the minimum spark advance.