| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device of a power split type continuously variable transmission capable of improving controllability in kick-down control in accompany with switching from a split mode to a belt mode.SOLUTION: When execution of kick-down control in accompany with switching from a split mode to a belt mode, is determined, change of a belt transmission ratio γis started in response to the determination. Further the total of a flow rate of an oil necessary for changing the belt transmission ratio γand a flow rate of an oil necessary for engagement of a clutch for switching from the split mode to the belt mode, is calculated as a necessary flow rate (Step S1). Furthermore, a flow rate of an oil discharged from an oil pump 5 is calculated as a supply flow rate (Step S2). The necessary flow rate and the supply flow rate are compared, and the supply of a hydraulic pressure to a low clutch is started (Step S4), when the supply flow rate is more than the necessary flow rate (YES in step S3).SELECTED DRAWING: Figure 7 |
