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Electric drive arrangement for internal combustion engines in motor vehicles

  • US 6,418,899 B1
  • Filed: 04/14/2000
  • Issued: 07/16/2002
  • Est. Priority Date: 04/23/1999
  • Status: Expired due to Term
First Claim
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1. An electric drive system for an internal combustion engine in a motor vehicle having an electric starter for the internal combustion engine, an electric generator in drive connection with the internal combustion and a battery for supplying voltage, said system comprising:

  • a semiconductor circuit connected to said battery and said generator; and

    an electronic control device controlling said semiconductor circuit, said electronic control device having a first input for receiving a vehicle start signal, a second input for receiving at least one temperature sensor signal and at least one output for providing a control signal to said electric starter and said semiconductor circuit;

    wherein said electronic control device output signal controls on and off operation of said electric starter and controls said semiconductor circuit to effect operation of said generator in either a motor mode or a generator mode;

    whereby starting of said internal combustion engine is performed as a function of said generator operating as a motor either alone or together with said electric starter, wherein said electronic control device includes means for switching the generator to operate as a motor, after the internal combustion engine is switched off and the fuel supply is switched off in order to maintain the rotation of the internal combustion engine during a post-operative phase until all residues still contained in the internal combustion engine or in a catalytic converter have been substantially removed.

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