The BSE and BSF engines removed the exhaust gas recirculation system. This system shall return a portion of the exhaust gases from the exhaust manifold to the exhaust manifold to reduce the toxicity of the exhaust in warm-up and abrupt modes of the engine which in these modes is operated on an enriched fuel mixture. Another feature of the engine is that when the cold exhaust system is turned on, it makes quite unpleasant sounds that many motorists are afraid of. It's connected to Euro-4, too. The sound goes missing in a minute. The BSE has an additional air fan. It is believed that the presence of the fan is conditioned by Euro 4 standards. Because of Euro-4 there are rare shaking, vibration of the engine at idling speed, as it is a very poor mixture.




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