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Fault tolerant air bag bus system without transformer

  • US 6,512,308 B2
  • Filed: 04/19/2001
  • Issued: 01/28/2003
  • Est. Priority Date: 04/19/2000
  • Status: Expired due to Term
First Claim
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1. An air bag system comprising:

  • igniters (10, 12) for firing air bags;

    a firing bus (32) for interconnecting the igniters (10, 12);

    a bus driver (26) for energizing the firing bus (32);

    a main energy reserve capacitor (14) for providing a supply voltage to the air bag system;

    a further energy reserve capacitor (34) coupled in parallel to the main energy capacitor (14) by means of switches (36, 38) to receive the supply voltage; and

    a power supply (40) for converting the supply voltage to a working voltage for the bus driver (26).

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