| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil pressure control device capable of properly controlling oil pressures of plural places while suppressing cost increase in a belt type continuously variable transmission. <P>SOLUTION: In a gear ratio control means 150, during regular times, gear ratio control of the continuously variable transmission 18 is carried out while detecting a primary actual oil pressure Pinp (=Pin) by an oil pressure sensor 132. Furthermore, when a fail safe valve 130 in a second communication state (a FAIL side) in a predetermined vehicle state wherein the gear ratio control is not carried out, an oil pressure learning means 174 learns a relationship between a secondary oil pressure Pd detected by the oil pressure sensor 132 and a control command value I<SB>SLS</SB>determining it, and on the basis of the learned relationship, a secondary oil pressure map stored by a belt clamping force control means 152 is updated. Accordingly, by providing one oil pressure sensor 132 without requiring two oil pressure sensors, both oil pressures of the primary oil pressure Pin and the secondary oil pressure Pd can be properly controlled. <P>COPYRIGHT: (C)2010,JPO&INPIT |
