Continuously variable transmission and shift control method thereof
摘要
<p>The shift control unit shifts the sub-transmission mechanism (30) while changing the speed ratio of the variator (20) in response to a change in the speed ratio of the sub-transmission mechanism (30) so that the through speed ratio does not change after the through speed ratio is caused to reach the final through speed ratio by changing only the speed ratio of the variator (20) if the speed ratio corresponding to the shift instruction from the driver is between a first speed ratio at which the sub-transmission mechanism (30) is in the second gear position at the high speed side and the speed ratio of the variator (20) is lowest and a second speed ratio at which the sub-transmission mechanism (30) is in the first gear position at the low speed side and the speed ratio of the variator (20) is highest when the manual mode is selected.</p>
