Patent ID: 8448730

Claim:
A multi-axle hybrid drive system for a an articulated bus ( 1 ), the multi-axle hybrid drive system comprising: a first unit ( 4 ) having an internal combustion engine ( 5 ), a separator clutch and a semi-automatic gearshift transmission ( 6 ) all associated with a first, mechanically driven axle ( 7 ) of the articulated bus ( 1 ) for supplying drive thereto; and at least one further unit ( 10 ) with one of wheel-hub motors ( 8 ) and a conventional electric axle drive in combination with an electric machine such that the at least one further unit ( 10 ) being associated with a respective electrically driven axle ( 9 ) of the articulated bus ( 1 ); wherein during a gearshift, the articulated bus ( 1 ) is drivable by the at least one further unit ( 10 ), associated with the electrically driven axle ( 9 ), such that any traction force interruption, occurring in the semi-automatic gearshift transmission ( 6 ) during the gearshift, is compensated; during a gearshift, recuperation is effected by the at least one further unit ( 10 ) associated with the electrically driven axle ( 9 ); an energy accumulator ( 12 ) is provided for accumulating enemy; and the mechanically driven axle ( 7 ) is an axle of a rear coach ( 3 ) of the articulated bus ( 1 ) and the at least one electrically driven axle ( 9 ) is an axle of a front coach ( 2 ) of the articulated bus ( 1 ).