| 摘要 |
A speed change control device for a belt type continuously variable transmission has a speed change control unit ( 32 ) which controls an oil pressure for determining a speed ratio of the continuously variable transmission ( 10 ) by operating a step motor ( 40 ), and detects a rotation speed of a primary pulley or a secondary pulley. A driving speed of the step motor ( 40 ) is limited using two or more of a temperature of a working oil of the speed change control unit ( 32 ), the speed ratio of the continuously variable transmission ( 10 ), and the detected rotation speed as parameters.
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