Reduction of slip during regenerative braking

摘要

A method of braking an electric or hybrid vehicle 7 is provided. The vehicle 7 has electric regenerative brakes and friction brakes 94. In a normal braking situation regenerative brakes are applied. If a wheel slip condition is sensed, a selectively operable clutch 76 torsionally connects an un-driven axle 60 to the driven axles 44, 45 to alleviate the slip condition. The alleviation of the slip condition prevents the electric regenerative brakes from being shut off in favour of an anti-lock friction brake application.