Method to control a road vehicle with a microslip of the clutch
AssigneeFerrari S.P.A.
InventorsAlessandro Barone, Andrea Nannini, Giacomo Senserini, Stefano Marconi
Life of this patent
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Abstract
A method to control a road vehicle provided with a clutch, which connects an internal combustion engine to drive wheels and is arranged upstream of a servo-assisted transmission; the control method comprises the steps of: checking whether the tyres of the drive wheels are close to a grip limit; and opening the clutch so that the clutch transmits a torque to the drive wheels with a slip of the clutch that is constant and other than zero when the tyres of the drive wheels are close to the grip limit.
Claims13
A method to control a road vehicle (1) provided with a clutch (16), which connects an internal combustion engine (4) to drive wheels (3) and is arranged upstream of a servo-assisted transmission (7);
- the control method comprises the steps of:
- checking whether tyres of the drive wheels (3) are close to a grip limit;
- and
- opening the clutch (16) so that the clutch (16) transmits a torque to the drive wheels (3) with a slip of the clutch (16) that is constant and other than zero when the tyres of the drive wheels (3) are close to the grip limit;
- wherein the tyres of the drive wheels (3) are considered close to the grip limit if:
- in the servo-assisted transmission (7), a gear is engaged, which belongs to a predetermined set of gears;
- and a torque (TE) generated by the internal combustion engine (4) exceeds a torque threshold value.
Dependencies are inferred from the claim text.