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Multi-axle hybrid drive system for a vehicle

  • US 8,448,730 B2
  • Filed: 11/05/2009
  • Issued: 05/28/2013
  • Est. Priority Date: 11/19/2008
  • Status: Expired due to Fees
First Claim
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1. 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).

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