| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable recognition of shifting characteristics of closing control without using a sensor, in a control device of a continuously variable transmission that controls shifting by two shifting solenoid valves. <P>SOLUTION: A variation of the shifting characteristics of the closing control is recognized by: comparison between a DS2 switching rotation speed (NINT-α) and a real input-shaft rotation speed NIN when the closing control is carried out by output control of a shifting solenoid DS1 for upshift; and comparison between a DS1 switching rotation speed (NINT-β) and the real input-shaft rotation speed NIN when the closing control is carried out by output control of a shifting solenoid DS2 for downshift. By switching the shifting solenoids (DS1 and DS2) for output in response to the variation of the shifting characteristics of the closing control, shift hunting during closing control is suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
