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Device for exhaust-gas purification, and an operating and monitoring for said device

  • US 6,935,103 B2
  • Filed: 02/25/2003
  • Issued: 08/30/2005
  • Est. Priority Date: 02/25/2002
  • Status: Expired due to Fees
First Claim
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1. A device for exhaust-gas purification involving reduction of nitrogen oxides, which are present in the exhaust gas from internal combustion engines, comprising an SCR catalytic converter using ammonia, at least one pressure vessel having a filling which releases gaseous ammonia when heat is supplied, and a metering unit downstream of the pressure vessel in a transition to the SCR catalytic converter, which metering unit is an ammonia source, wherein the pressure vessel filling is liquid ammonia, and at least the metering unit is arranged in a gastight, pressure-monitored housing.

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