Patent ID: 6293097
Filing Date: 2001-09-25
Classification: B01D,F01N,Y02A,Y02T

Abstract:
An on-board reductant delivery system for a motor vehicle comprising:a mixer/nozzle system for connection to an exhaust system of a motor vehicle, said mixer/nozzle system including a nozzle;a fluid metering system connected to said mixer/nozzle system for metering reductants to said mixer/nozzle system; andan air supply system connected to said mixer/nozzle system for delivering pressurized air to said mixer/nozzle system and including a pressure sensor for sensing a pressure level from said air supply system and the exhaust system and a pressure control circuit connected to said pressure sensor for adjusting a pressure level from said air supply system to maintain a constant pressure differential across said nozzle, wherein said mixer/nozzle system mixes the reductants and pressurized air and sprays the mixture through said nozzle in the exhaust system of the motor vehicle to reduce NOx.