With a functioning engine, 50 to 70 liters of exhaust gases per minute pass through the piston rings into the crankcase. The gases must be removed from the engine so as not to create strong loads on the seals. This is done by crankcase ventilation. To protect the environment, toxic gases from the engine enter the intake system and from there are fed back into the engine for complete combustion.
[Article obtained from this portal: www.mercedesman.ru]
Engine crankcase ventilation (Mercedes-Benz E-Class W210)
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