Patent ID: 9003772
Filing Date: 2015-04-14
Classification: F01N,F04B,Y02T

Abstract:
1. A method for metering fuel from a high pressure system ( 10 ) having, at least one electrically actuated high pressure pump ( 11 ), one pressure accumulator ( 13 ) and one downstream, electrically actuated high pressure injection valve ( 16 ), into an exhaust gas duct of an internal combustion engine in order to regenerate a nitrogen oxide storage catalyst (NSC) disposed in the exhaust gas duct, the method comprising: pressurizing fuel with the high pressure pump ( supplying the fuel to the pressure accumulator ( injecting the fuel into the exhaust gas duct via the downstream, electrically actuated high pressure injection valve ( wherein the high pressure pump ( wherein a fuel quantity Q injected into the exhaust gas duct is extracted from the pressure accumulator ( wherein the control unit maintains the actuation signal HDEV (