Engine torque control device

DRIVE April 19, 2006
Source
An engine torque control device is configured to lessen shift shock while shortening the shift time during downshifting with an automatic transmission (5). When a downshift requirement is generated, a disengagement control of a higher gear clutch (current gear ratio) is commenced, and at the same time, a first synchronizing control is commenced. The first synchronizing control has a torque-up control with a first synchronizing speed DNe1 set as the target speed TNe, during a first control period. When the first control period has concluded and there is a transition to a second control period. In the second control period, an engagement control of a lower gear clutch (the post-shift gear ratio) is commenced, and at the same time, there is a switch to a second synchronizing control. In the second synchronizing control, the target speed TNe is set to a second synchronizing speed DNe2 at the post-shift gear ratio.

Discussion in the ATmosphere

Loading comments...