A continuously variable transmission apparatus includes a toroidal-type
continuously variable transmission, a planetary gear type transmission
and a clutch apparatus that connects the toroidal-type continuously
variable transmission and the planetary gear type transmission. The
clutch apparatus includes: a low speed clutch engaged for realizing a low
speed mode and disengaged for realizing a high speed, a high speed clutch
engaged for realizing the high speed mode and disengaged for realizing
the low speed mode and a controller. The controller controls the
transmission ratio of the toroidal-type continuously variable
transmission so that rotational speeds of members connected via the
clutch apparatus equals with each other, and then disengages the one of
the low speed clutch and the high speed clutch after engaging the other.