| Exhaust gas recirculation system |
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| The exhaust gas recirculation system is activated automatically by the control unit for the automatic preheating period -J179- by a two way gas circulation valve -N161- or -N18- and a mechanic exhaust gas recirculation valve. |
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| Above altitudes of 1000m, the gas recirculation system is deactivated by a corrector switch in the control unit for the automatic preheating cycle. |
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| The deactivation according to engine speed is controlled by the control unit for the automatic preheating cycle -J179-. At engine speeds greater that 800/min, recirculation is activated and it is deactivated at over 3200/min. |
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| During acceleration, the gas recirculation is suspended for 2 seconds. |
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