Kombination von LNT und passivem SDPF: Eine Systembetrachtung für kleine Pkw Dieselmotoren unter RDE Bedingungen

Reinhard Ratzberger, Eberhard Schutting, Helmut Eichlseder, Klaus Hadl, Martin Wieser, Horst Mitterecker

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschung

Abstract

The market share of Diesel engines for small passenger cars in Europe and India will be strongly dependent on the complexity of future Exhaust Aftertreatment Systems (EAS). A Lean-NOX-Trap (LNT) in combination with a conventional Diesel Particulate Filter (DPF) was extensively applied for Euro 6b. With regard to Real Driving Emissions (RDE) legislation, high load engine operation and component aging, lean-NOX-traps reach their boundaries of an efficient NOX conversion. Thus, measures are required to support the NOX conversion beyond the restricted operating range of the LNT. Therefore, a system was tested which additionally uses Selective Catalytic Reduction (SCR) yet without active AdBlue® dosing, i.e. passive SCR. The lean-NOX-trap was combined with a DPF extended with an SCR coating (SDPF) in a close-coupled arrangement. A major focus of the investigation was on the operation during aggressive driving cycles, in order to counteract the especially here distinct restrictions of a hot-end LNT by the addition of the SDPF. Depending on the vehicle, it can accordingly be dispensed with an active AdBlue® dosage in wide operating areas.
Titel in ÜbersetzungKombination von LNT und passivem SDPF: Eine Systembetrachtung für kleine Pkw Dieselmotoren unter RDE Bedingungen
Originalspracheenglisch
Titel26th Aachen Colloquium Automobile and Engine Technology 2017
Seiten1037-1056
PublikationsstatusVeröffentlicht - 2017

Dies zitieren

Ratzberger, R., Schutting, E., Eichlseder, H., Hadl, K., Wieser, M., & Mitterecker, H. (2017). Combination of LNT and Passive SDPF: A System Assessment for Small Passenger Car Diesel Engines under RDE Conditions. in 26th Aachen Colloquium Automobile and Engine Technology 2017 (S. 1037-1056)

Combination of LNT and Passive SDPF : A System Assessment for Small Passenger Car Diesel Engines under RDE Conditions. / Ratzberger, Reinhard; Schutting, Eberhard; Eichlseder, Helmut; Hadl, Klaus; Wieser, Martin; Mitterecker, Horst.

26th Aachen Colloquium Automobile and Engine Technology 2017. 2017. S. 1037-1056.

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschung

Ratzberger, R, Schutting, E, Eichlseder, H, Hadl, K, Wieser, M & Mitterecker, H 2017, Combination of LNT and Passive SDPF: A System Assessment for Small Passenger Car Diesel Engines under RDE Conditions. in 26th Aachen Colloquium Automobile and Engine Technology 2017. S. 1037-1056.
Ratzberger R, Schutting E, Eichlseder H, Hadl K, Wieser M, Mitterecker H. Combination of LNT and Passive SDPF: A System Assessment for Small Passenger Car Diesel Engines under RDE Conditions. in 26th Aachen Colloquium Automobile and Engine Technology 2017. 2017. S. 1037-1056
Ratzberger, Reinhard ; Schutting, Eberhard ; Eichlseder, Helmut ; Hadl, Klaus ; Wieser, Martin ; Mitterecker, Horst. / Combination of LNT and Passive SDPF : A System Assessment for Small Passenger Car Diesel Engines under RDE Conditions. 26th Aachen Colloquium Automobile and Engine Technology 2017. 2017. S. 1037-1056
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N2 - The market share of Diesel engines for small passenger cars in Europe and India will be strongly dependent on the complexity of future Exhaust Aftertreatment Systems (EAS). A Lean-NOX-Trap (LNT) in combination with a conventional Diesel Particulate Filter (DPF) was extensively applied for Euro 6b. With regard to Real Driving Emissions (RDE) legislation, high load engine operation and component aging, lean-NOX-traps reach their boundaries of an efficient NOX conversion. Thus, measures are required to support the NOX conversion beyond the restricted operating range of the LNT. Therefore, a system was tested which additionally uses Selective Catalytic Reduction (SCR) yet without active AdBlue® dosing, i.e. passive SCR. The lean-NOX-trap was combined with a DPF extended with an SCR coating (SDPF) in a close-coupled arrangement. A major focus of the investigation was on the operation during aggressive driving cycles, in order to counteract the especially here distinct restrictions of a hot-end LNT by the addition of the SDPF. Depending on the vehicle, it can accordingly be dispensed with an active AdBlue® dosage in wide operating areas.

AB - The market share of Diesel engines for small passenger cars in Europe and India will be strongly dependent on the complexity of future Exhaust Aftertreatment Systems (EAS). A Lean-NOX-Trap (LNT) in combination with a conventional Diesel Particulate Filter (DPF) was extensively applied for Euro 6b. With regard to Real Driving Emissions (RDE) legislation, high load engine operation and component aging, lean-NOX-traps reach their boundaries of an efficient NOX conversion. Thus, measures are required to support the NOX conversion beyond the restricted operating range of the LNT. Therefore, a system was tested which additionally uses Selective Catalytic Reduction (SCR) yet without active AdBlue® dosing, i.e. passive SCR. The lean-NOX-trap was combined with a DPF extended with an SCR coating (SDPF) in a close-coupled arrangement. A major focus of the investigation was on the operation during aggressive driving cycles, in order to counteract the especially here distinct restrictions of a hot-end LNT by the addition of the SDPF. Depending on the vehicle, it can accordingly be dispensed with an active AdBlue® dosage in wide operating areas.

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