Mechanical Hybrid KERS Based on Toroidal Traction Drives: An Example of Smart Tribological Design to Improve Terrestrial Vehicle Performance

Table 2

The geometric data of the three toroid geometries.

	SHTV	SFTV	DFTV
Cavity radius 𝑟0	40 mm	40 mm	40 mm
Roller radius 𝑟2	34.6 mm	40 mm	18.7 mm
Conformity ratio CR=𝑟22/𝑟0	0.8	0.5	0.8
Half-cone angle 𝜃	𝜋/3	𝜋/2	𝜋/2
Incidence cone-angle 𝛼			43 deg
Aspect ratio 𝑘=𝑒/𝑟0	0.625	0.25	0.286
𝑁^∘ of cavities 𝑚	2	2	2
𝑁^∘ of rollers set 𝑛	3	3	3
𝑁^∘ of rollers per set 𝑛𝑟	1	1	2