Exhaust gas system unit
AssigneeTenneco Inc.
InventorsSascha Vollmer, Andreas Lang, Daniel Trzebinski, Wladimir Rikow, Aaron Manley
Life of this patent
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Abstract
The disclosure relates to an exhaust gas sub-system for an internal combustion engine, having a catalytic converter with an inlet section for introducing an exhaust gas flow into the outer housing and having a feed line for secondary gas, the feed line having an inflow element at the end, which opens at the inlet section, the outer housing has an inlet opening for exhaust gas, an external heating element for heating the secondary gas and for generating hot gas being provided in the feed line upstream of the inflow element, at least one inflow opening in the outer housing being assigned to the inflow element, via which hot gas can be fed into the inlet section.
Claims14
An exhaust gas sub-system for an internal combustion engine, comprising:
- a catalytic converter housing with an inlet section and with an inlet opening for introducing an exhaust gas flow into the catalytic converter housing and,
- for secondary gas, a feed line that is free of the exhaust gas flow, the feed line comprising an inflow element at its end, by means of which the secondary gas is fed to the exhaust gas flow,
- wherein the inflow element is placed upstream of the catalytic converter housing,
- wherein a heating element for heating the secondary gas is provided in the feed line upstream of the inflow element,
- wherein
- at least one inflow opening at the inlet section is correlated to the inflow element via which the heated secondary gas can be fed to the exhaust gas flow starting from the feed line,
- wherein the inflow element together with an outer side of the inlet section delimits a collection chamber from which the secondary gas can be guided into the inlet section via the at least one inflow opening, wherein each of the inflow openings comprises an opening cross-section and an opening axis,
- wherein the opening axes of adjacent inflow openings are inclined at an angle α to one another and thereby comprising different incident angles towards an exhaust gas main flow center axis.
Dependencies are inferred from the claim text.