Device and method of controlling a belt-type continuously variable transmission

摘要

The line oil pressure P L that is a basic pressure of a needed Pin pressure and a Pd pressure is set by line oil pressure setting means (160) on the basis of the higher oil pressure of the oil pressure values obtained by adding reference margin values EX to the needed Pin pressure and the to Pd pressure. Therefore, a requirement minimum line oil pressure P L with respect to the needed Pin pressure needed for shifting and the Pd pressure needed for the belt clamping pressure is appropriately set so that good shifting performance and good belt clamping pressure are secured.