Mixing device for mixing a reaction medium into a gas stream, exhaust gas path with such a mixing device and internal combustion engine

An exhaust gas path for an internal combustion engine, the exhaust gas path comprising:

• at least one mixing device for mixing a reaction medium into a gas stream, the at least one mixing device including:
• a flow housing including a longitudinal axis and an inlet wall with an inlet opening for the gas stream, the inlet opening being arranged relative to the longitudinal axis such that an inflow direction of the gas stream encloses a first angle (α) with the longitudinal axis, the first angle being finite;
• a first flow path;
• a second flow path;
• a swirling element, which is arranged in the flow housing opposite the inlet opening along the inflow direction, the swirling element including a side facing toward the inlet opening and a side facing away from the inlet opening, the swirling element being arranged such that (i) the first flow path for the gas stream is formed in the flow housing on the side of the swirling element facing toward the inlet opening and (ii) the second flow path for the gas stream is formed in the flow housing on the side of the swirling element facing away from the inlet opening;
• at least one metering device configured for metering the reaction medium into the flow housing and for metering the reaction medium along a metering direction which is arranged obliquely relative to the inflow direction and obliquely relative to the longitudinal axis.

An internal combustion engine, comprising:

• (a) a mixing device for mixing a reaction medium into a gas stream, the mixing device comprising:
• a flow housing including a longitudinal axis and an inlet wall with an inlet opening for the gas stream, the inlet opening being arranged relative to the longitudinal axis such that an inflow direction of the gas stream encloses a first angle (α) with the longitudinal axis, the first angle being finite;
• a first flow path;
• a second flow path;
• a swirling element, which is arranged in the flow housing opposite the inlet opening along the inflow direction, the swirling element including a side facing toward the inlet opening and a side facing away from the inlet opening, the swirling element being arranged such that (i) the first flow path for the gas stream is formed in the flow housing on the side of the swirling element facing toward the inlet opening and (ii) the second flow path for the gas stream is formed in the flow housing on the side of the swirling element facing away from the inlet opening;
• at least one metering device configured for metering the reaction medium into the flow housing and for metering the reaction medium along a metering direction which is arranged obliquely relative to the inflow direction and obliquely relative to the longitudinal axis;
• or
• (b) an exhaust gas path for the internal combustion engine, the exhaust gas path including:
• at least one mixing device for mixing a reaction medium into a gas stream, the at least one mixing device including:
• a flow housing including a longitudinal axis and an inlet wall with an inlet opening for the gas stream, the inlet opening being arranged relative to the longitudinal axis such that an inflow direction of the gas stream encloses a first angle (α) with the longitudinal axis, the first angle being finite;
• a first flow path;
• a second flow path;
• a swirling element, which is arranged in the flow housing opposite the inlet opening along the inflow direction, the swirling element including a side facing toward the inlet opening and a side facing away from the inlet opening, the swirling element being arranged such that (i) the first flow path for the gas stream is formed in the flow housing on the side of the swirling element facing toward the inlet opening and (ii) the second flow path for the gas stream is formed in the flow housing on the side of the swirling element facing away from the inlet opening;
• at least one metering device configured for metering the reaction medium into the flow housing and for metering the reaction medium along a metering direction which is arranged obliquely relative to the inflow direction and obliquely relative to the longitudinal axis.