Written By Editor on 2014-04-02,
Posted in Car Chat |
Last year, Mercedes-Benz debuted its 9 speed transmission (called 9G-Tronic) in its European market E class sedan.
Although with the same aluminum made torque converter bell housing, compared to the current 7G-Tronic, this 9G-Tronic transmission changes to use magnesium alloy to construct its main casing, which is lighter and retains the same strength. The transmission oil pan is made with plastic though.
However, there is no dramatic difference of the mechanical shifting parts between the 9G and 7G transmission. Both of them have 4 planetary gear sets and 6 shifting elements (3 multi-disc clutches and 3 multi-disc brakes)...
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