Functional description
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The engine control activates the electric changeover valve. The partial vacuum applied opens the exhaust flap. The degree of opening depends on gear, engine load and engine speed. The partial vacuum applied opens the exhaust flap. When air impacts against the diaphragm in the aneroid capsule (vacuum system depressurized) a spring closes the exhaust flap.
Example N63
| Item | Explanation |
|---|---|
| 1 | Electric changeover valve exhaust flap |
| 2 | two-pin plug connection |
| 3 | Vacuum line |
| 4 | Exhaust flap, bank 1 |
| 5 | Exhaust flap, bank 2 |