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Retarder brake system of a vehicle combination

  • US 9,616,756 B2
  • Filed: 04/21/2016
  • Issued: 04/11/2017
  • Est. Priority Date: 04/30/2015
  • Status: Active Grant
First Claim
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1. A retarder brake system of a vehicle combination including an agricultural tractor and an electrically driven trailer, comprising:

  • a drive train with a combustion engine;

    a vehicle transmission coupled to the engine;

    a mechanical drive axle of the agricultural tractor coupled to a first gear output of the transmission;

    a first electrical motor generator unit coupled to a second gear output; and

    an electrical drive axle of the trailer operably driven by a second electrical motor generator unit;

    wherein, the two electrical motor generator units are electrically coupled to one another via a direct current link;

    wherein, in a retarder operation, the second electrical motor generator unit is operated by a generator, and the first electrical motor generator unit is operated with a motor, where at least a portion of a gross retarder output requested on the electrical drive axle is dissipatively destroyed as a power loss within the drive train.

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