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Table 8 Gear ratios, interval of gear ratio and transmission efficiency of the novel AT mechanism (2)

From: Configuration Synthesis and Performance Analysis of 9-Speed Automatic Transmissions

Gear Gear ratio Interval of
gear ratio
Transmission efficiency
Reverse gear − 9.32 0.9355
1st gear 4.51 0.9286
2nd gear 2.90 1.56 0.9803
3rd gear 2.36 1.23 0.9510
4th gear 1.76 1.34 0.9794
5th gear 1.57 1.12 0.9808
6th gear 1 1.57 1
7th gear 0.64 1.56 0.9865
8th gear 0.60 1.07 0.9878
9th gear 0.53 1.13 0.9804