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AssigneeMercedes-Benz AG
InventorsStefan Pischinger, Christof Schon, Michel Weibel, Bernd Krutzsch, Rudiger Pfaff, Walter Boegner
Estimating the term…
A method and an apparatus are provided for operating a diesel engine with an exhaust feedback device located between the exhaust line and the intake air line, with an adjusting element that can be operated by an adjusting drive actuated by an auxiliary force to operate the exhaust feedback device as a function of signals from an electronic control device. An engine regulator permits rich/lean regulation of the diesel engine as a function of its operating parameters. A storage catalyst is located in the exhaust line, in which catalyst oxides of nitrogen (NO.sub.x) can be adsorbed, desorbed, and reduced. A sensor is located downstream from the storage catalyst for detecting the NO.sub.x concentration in the exhaust stream in such fashion that when an NO.sub.x storage threshold value is reached that varies in terms of its characteristics as a function of the rpm and the load, a switch is made from operation with a lambda value of larger than 1 to operation with a lambda value of less than 1.
A method for operating a diesel engine including an intake air line and an exhaust line carrying exhaust, an exhaust feedback device communicating said exhaust line with said intake air line, said exhaust feedback device being adjustable as a function of signals from an electronic control device, an engine regulating device controlling an air-fuel ratio of the diesel engine as a function of operating parameters of the diesel engine, a storage catalyst being provided in said exhaust line, said catalyst being capable of adsorbing, desorbing, and reducing NO.sub.x, a sensor being provided in said exhaust line downstream from said storage catalyst for detecting the NO.sub.x concentration in the exhaust, said method comprising the step of:
An apparatus for operating a diesel engine comprising:
Dependencies are inferred from the claim text.