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Method for operating a motor vehicle

  • US 9,162,582 B2
  • Filed: 02/28/2012
  • Issued: 10/20/2015
  • Est. Priority Date: 05/24/2011
  • Status: Active Grant
First Claim
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1. A method for operating a motor vehicle, said motor vehicle comprising a vehicle start system configured for maximal acceleration of the vehicle from standstill, at least one rechargeable energy storage unit storing electric energy, and at least one electric motor connected to the at least one energy storage unit, said method comprising:

  • in a deactivated state of the vehicle start system, charging the at least one rechargeable energy storage unit up to a first charging state limit, which is below a maximal charging state of the rechargeable energy storage unit; and

    in an activated state of the vehicle start system and prior to acceleration of the motor vehicle, charging the at least one rechargeable energy storage unit to a further charging state limit above the first charging state limit and/or connecting at least one further rechargeable energy storage unit in series,wherein an energy amount required for charging the at least one energy storage unit to the second charging state limit is generated by at least one of the least one electric motor operated as generator, and a further energy storage unit.

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