Control device and method for engine and transmission
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a control device for an engine able to control at least one of an intake valve and an exhaust valve via a driving mechanism actuated without a torque from an output shaft of the engine, and a transmission connected to the engine. The control device includes a torque transmitting device for reducing the torque from the engine while that torque is being transmitted to an output shaft of the transmission, and control means for controlling the torque transmitting device so as to reduce the torque transmitted from the engine to the output shaft of the transmission during an upshift, controlling a engine speed to a target speed after shifting during the unshift, and controlling the torque transmitting device so as to increase the torque transmitted to the output shaft of the transmission after the engine speed is synchronized with the speed after shifting.
-
Citations
36 Claims
-
1-17. -17. (Canceled)
-
18. A control device for an engine and a transmission, comprising:
-
a driving mechanism that controls at least one of an intake valve and an exhaust valve so as to be opened and be closed without a torque from an output shaft of the engine;
a transmitting mechanism provided between the transmission and the engine; and
a controller that reduces or interrupts a torque transmitted by the transmitting mechanism during an upshift, performing a rotation reduction control for controlling the driving mechanism so as to reduce an engine speed while the torque transmitted by the transmitting mechanism is reduced or interrupted, and controls, when the engine speed becomes a target engine speed that is higher than a first engine speed according to the gear ratio after the upshift, the driving mechanism so that the engine speed becomes the first engine speed according to the gear ratio after the upshift while increasing the torque transmitted by the transmitting mechanism during the upshift. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
-
36. A control method for an engine and a transmission comprising:
-
reducing or interrupting a torque transmitted by a transmitting mechanism provided between the engine and the transmission during an upshift;
controlling a driving mechanism, which controls at least one of an intake valve and an exhaust valve so as to be opened and be closed without a torque from an output shaft of the engine, so as to reduce an engine speed while the torque transmitted by the transmitting mechanism is reduced or interrupted; and
controlling, when the engine speed becomes a target engine speed that is higher than a first engine speed according to the gear ratio after the upshift, the driving mechanism so that the engine speed becomes the first engine speed according to the gear ratio after the upshift while increasing the torque transmitted by the transmitting mechanism during the upshift.
-
Specification