English to French Law/Patents Mechanics / Mech Engineering continuously variable transmission

A block 531 predicts a between-before-and-after differential pressure of the shift oil pump 122 with respect to the input value of the target
current I by using a transfer function F(I) to calculate a predicted differential pressure Pdiff_e.

In the transfer function F(I), the between-before-and-after differential pressure is calculated based on oil pump characteristics such as the mechanical efficiency, a specific discharge amount, and a motor torque constant of the shift oil pump 122 in accordance with the target current I.

predict a predicted oil pressure (Ppri_e) in the primary oil chamber (41c) when the oil pump (122) is activated with the current command value
(I*) based on an oil pressure in the secondary oil chamber (42c) and a between-before-and-after differential pressure generated before and after the oil pump (122) in which a current of the current command value (I*) flows.