New Engines for the New Mercedes-Benz E-Class Coupé: More Power, Less CO2
Green Car Congress
MARCH 25, 2009
The HP turbine housing features an integral bypass duct, which can be opened or closed by means of a charge-pressure control flap triggered by a vacuum cell. This means that the optimum charge pressure can be built up at low engine revs. 1 (Lambda = 1), which is important for emission control by means of three-way catalytic converter.
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