Exhaust-gas aftertreatment system upstream of a turbocharger, method for purifying exhaust gas and vehicle having the system
View Patent ↗An exhaust-gas aftertreatment system for an internal combustion engine of a vehicle includes at least one exhaust line, at least one turbocharger and at least one exhaust-gas converter. The at least one exhaust-gas converter is provided between the internal combustion engine and the at least one turbocharger and has a first volume of at least 0.6 liters. A method for purifying exhaust gas and a vehicle having the system, are also provided.
1. An exhaust-gas aftertreatment system for an internal combustion engine of a vehicle, the exhaust-gas aftertreatment system comprising:
at least one exhaust line;
at least one turbocharger; and
at least one exhaust-gas converter disposed between the internal combustion engine and said at least one turbocharger; and
at least one exhaust-gas aftertreatment unit disposed downstream of said at least one turbocharger and having a second volume, said first volume of said at least one exhaust-gas converter being larger than said second volume of said at least one exhaust-gas aftertreatment unit.
2. An exhaust-gas aftertreatment system for an internal combustion engine of a vehicle, the exhaust-gas aftertreatment system comprising:
at least one exhaust line;
at least one turbocharger; and
at least one exhaust-gas converter disposed between the internal combustion engine and said at least one turbocharger, said at least one exhaust-gas converter having a first volume of at least 0.6 liters; and
at least one exhaust-gas aftertreatment unit disposed downstream of said at least one turbocharger and having a second volume, said first volume of said at least one exhaust-gas converter being larger than said second volume of said at least one exhaust-gas aftertreatment unit.
3. The exhaust-gas aftertreatment system according to claim 2 , wherein said at least one exhaust-gas converter and said at least one exhaust-gas aftertreatment unit are constructed to perform the same function.
4. The exhaust-gas aftertreatment system according to claim 2 , wherein said at least one exhaust-gas converter includes an oxidation catalytic converter.
5. The exhaust-gas aftertreatment system according to claim 2 , wherein said at least one exhaust-gas converter includes an oxidation catalytic converter and a particle separator.
6. The exhaust-gas aftertreatment system according to claim 2 , which further comprises a plurality of exhaust line sections, and a collecting chamber for said plurality of exhaust line sections, said at least one exhaust-gas converter being positioned in said collecting chamber.
7. The exhaust-gas aftertreatment system according to claim 2 , wherein said at least one turbocharger is constructed with two stages.
8. A method for purifying an exhaust gas of an internal combustion engine with an exhaust-gas aftertreatment system having at least one turbocharger, the method comprising the following steps:
providing exhaust-gas aftertreatment unit according to claim 2 ;
converting all of the exhaust gas by oxidation to a greater extent between the internal combustion engine and the turbocharger than in a region downstream of the turbocharger.
9. A vehicle, comprising:
an exhaust-gas aftertreatment system according to claim 2 ;
the internal combustion engine being a lean-burn engine.
10. The exhaust-gas aftertreatment system according to claim 2 , wherein said at least one exhaust-gas converter and said at least one exhaust-gas aftertreatment unit are constructed to perform the same function.