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Table 9 Gear ratios, interval of gear ratio and transmission efficiency of the novel AT mechanism (3)

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

Gear Gear ratio Interval of
gear ratio
Transmission efficiency
Reverse gear − 3.00 0.9333
1st gear 5.57 0.8867
2nd gear 3.30 1.69 0.9791
3rd gear 1.95 1.69 0.9643
4th gear 1.75 1.11 0.9845
5th gear 1.58 1.11 0.9713
6th gear 1 1.58 1
7th gear 0.80 1.25 0.9895
8th gear 0.67 1.19 0.9803
9th gear 0.55 1.22 0.9714