| Operation of radiator for exhaust gas recirculation |
| The exhaust gas recirculation system is equipped with a radiator, through which the coolant flows, in order to improve the emission levels. |
| The exhaust gas which flows back into the combustion chamber is guided under certain conditions via this radiator. In this way the exhaust gas temperature can be decreased, which in turn decreases the combustion chamber temperature and improves the emission levels. |
| Switching on and off the radiator for exhaust gas recirculation is controlled by the engine control unit via the changeover valve for radiator of exhaust gas recirculation -N345-. The electro-pneumatic changeover valve opens and closes the vacuum supply to the vacuum setting element of the radiator flap. |
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