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Starting motor for an internal combustion engine, having a safety device

  • US 6,661,195 B1
  • Filed: 10/16/2000
  • Issued: 12/09/2003
  • Est. Priority Date: 10/15/1999
  • Status: Expired due to Fees
First Claim
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1. A starting motor for an internal combustion engine, having gearing to the engine, the gearing producing a closed linkage between the starting motor and the engine, during a starting operation of the engine, the starting motor having a battery, the starting motor comprising:

  • a control circuit for measuring at least one of a starter voltage and a starter current that causes a crankshaft of the internal combustion engine to be driven, the control circuit determining at least one of the starter current, a temperature rise and a load at at least one point of the starting motor as a function of a voltage ripple in a primary circuit of the starting motor;

    a comparator for presetting a maximum load of the starting motor;

    a Schmitt trigger for emitting a signal from load values and a predefined limiting value, in response to the limiting value being one of exceeded and undershot; and

    a safety device for limiting an induction flux to the engine, in response to an appearance of the signal.

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