ABSTRACT
Various types of bevel planetary gear trains (PGTs) exist, but one of them is most commonly used. This is the gear train shown in Figure 36.1. From kinematic point of view, it is equivalent to those, given on the same figure 2210—and https://www.w3.org/1998/Math/MathML"> AAA ¯ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429458521/48698ab4-fcf2-474d-9d24-cd80e7124439/content/equ36_0001.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> -PGTs (see Chapter 25). What is common between the gear trains depicted in Figure 36.1 is their specific application as a symmetrical inter-wheel or inter-axle differential in vehicles due to the fact that their basic speed ratio is i 0 = −1. They can also be used as an asymmetric inter-axle differential in i 0 ≠ −1. For this reason, they are probably the most mass-produced PGTs, as millions and millions of cars are produced annually in the world and, in the majority of cases, they have conical differentials.
