Burner for a Motor Vehicle and Motor Vehicle Having at Least One Such Burner

A burner (42) for an exhaust gas tract (26) that is flowable through by exhaust gas of an internal combustion engine (12) of a motor vehicle, comprising:

• a combustion chamber (58) in which a mixture comprising air and a liquid fuel is ignitable and combustible;
• an inner swirl chamber (62) that is flowable through by a first part of the air and that causes a turbulent flow of the first part of the air, wherein the inner swirl chamber (62) has a first outflow opening (64) that is flowable through by the first part of the air flowing through the inner swirl chamber (62) and via which the first part of the air is removable from the inner swirl chamber (62);
• an introduction element (66) that is flowable through by the liquid fuel and via which the liquid fuel is introducible into the inner swirl chamber (62), wherein the first outflow opening (64) is flowable through by liquid fuel removed from the introduction element (66);
• an outer swirl chamber (76) that surrounds at least one longitudinal region of the inner swirl chamber (62) in a peripheral direction of the inner swirl chamber (62), wherein the outer swirl chamber (76) is flowable through by a second part of the air and causes a turbulent flow of the second part of the air, wherein the outer swirl chamber (76) has a second outflow opening (80) that is flowable through by the second part of the air flowing through the outer swirl chamber (76), by liquid fuel flowing through the first outflow opening (64), and by the first part of the air flowing through the inner swirl chamber (62) and the first outflow opening (64), and wherein the first part of the air and the second part of the air and the liquid fuel are introducible into the combustion chamber (58) via the second outflow opening (80);
• and
• a feeding conduit (241) that is flowable through by the air and which leads into an air chamber (92) shared by the inner swirl chamber (62) and the outer swirl chamber (76), wherein the inner swirl chamber (62) and the outer swirl chamber (76) are overlapped at least partially in an opposite direction (248) to a flow direction (246) by the air chamber (92), and wherein the air chamber (92) extends uninterrupted both along a first direction (250) running in parallel with the flow direction (246) and a second direction (252) running perpendicular to the flow direction (246);
• wherein the combustion chamber (58) has a plurality of through openings (98) which are spaced apart from one another and are separated from one another by wall regions (W) formed by respective solid bodies and wherein burner exhaust gas (44) is removable from the combustion chamber (58) via the plurality of through openings (98) and is introducible into the exhaust gas tract (26).

A burner (42) for an exhaust gas tract (26) that is flowable through by exhaust gas of an internal combustion engine (12) of a motor vehicle, comprising:

• a combustion chamber (58) in which a mixture comprising air and a liquid fuel is ignitable and combustible;
• an inner swirl chamber (62) that is flowable through by a first part of the air and that causes a turbulent flow of the first part of the air, wherein the inner swirl chamber (62) has a first outflow opening (64) that is flowable through by the first part of the air flowing through the inner swirl chamber (62) and via which the first part of the air is removable from the inner swirl chamber (62);
• an introduction element (66) that is flowable through by the liquid fuel and via which the liquid fuel is introducible into the inner swirl chamber (62), wherein the first outflow opening (64) is flowable through by liquid fuel removed from the introduction element (66);
• an outer swirl chamber (76) that surrounds at least one longitudinal region of the inner swirl chamber (62) in a peripheral direction of the inner swirl chamber (62), wherein the outer swirl chamber (76) is flowable through by a second part of the air and causes a turbulent flow of the second part of the air, wherein the outer swirl chamber (76) has a second outflow opening (80) that is flowable through by the second part of the air flowing through the outer swirl chamber (76), by liquid fuel flowing through the first outflow opening (64), and by the first part of the air flowing through the inner swirl chamber (62) and the first outflow opening (64), and wherein the first part of the air and the second part of the air and the liquid fuel are introducible into the combustion chamber (58) via the second outflow opening (80);
• and
• a closing element (132) that is movable relative to the first outflow opening (64) and the second outflow opening (80) between a closed position fluidically blocking at least one of the first outflow opening (64) and the second outflow opening (80) and an open position releasing the at least one of the first outflow opening (64) and the second outflow opening (80).