| 摘要 |
Arranged downstream of the catalytic converter (5) arranged in an exhaust pipe (4) of an internal combustion engine (1) is a self-regulating restriction element (8) which closes the exhaust pipe (4) almost completely in the warm-up phase of the internal combustion engine (1). The increase in the exhaust back pressure resulting from this has the effect of increasing the engine mass flow and, as a result, the exhaust gas temperature rises and the catalytic converter is rapidly heated. <IMAGE>
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