Method for controlling automatic transmission
AssigneeHyundai Motor Company
InventorJin Young Hwang
Life of this patent
Estimating the term…
Abstract
A method for controlling an automatic transmission includes reducing, by a controller, a number of rotation of the engine connected to the automatic transmission to the first number of rotation when a shifting of the automatic transmission is started. The method further includes reducing, by the controller, a line pressure that is a hydraulic pressure of a flow line that operates the automatic transmission when the shifting of the automatic transmission is started.
Claims20
A method for controlling an automatic transmission, the method comprising:
- reducing, by a controller, a number of rotation of an engine connected to the automatic transmission to a first number of rotation when a shifting of the automatic transmission is started;
- reducing, by the controller, a line pressure that is a hydraulic pressure of a flow line that operates the automatic transmission when the shifting of the automatic transmission is started;
- and
- when the number of rotation of the engine is reduced to the first number of rotation, increasing, by the controller, a pressure of a fluid supplied to a reverse clutch after the controller provides an initial filling hydraulic pressure to the reverse clutch, wherein the reverse clutch operates in response to a reverse (R) stage shifting signal and is included in the automatic transmission.
A method for controlling an automatic transmission, the method comprising:
- reducing, by a controller, a number of rotation of an engine connected to the automatic transmission to a first number of rotation when a shifting of the automatic transmission is started;
- reducing, by the controller, a hydraulic pressure of a flow line that operates the automatic transmission when the shifting of the automatic transmission is started;
- and
- providing an initial filling hydraulic pressure to a reverse clutch, wherein the reverse clutch operates in response to a reverse (R) stage shifting signal and is included in the automatic transmission.
A method for controlling an automatic transmission, the method comprising:
- reducing, by a controller, a number of rotation of an engine connected to the automatic transmission to a first number of rotation when a shifting of the automatic transmission is started;
- reducing, by the controller, a hydraulic pressure of a flow line that operates the automatic transmission when the shifting of the automatic transmission is started;
- and
- increasing, by the controller, a pressure of a fluid supplied to a reverse clutch until the number of rotation of a turbine is adjusted to zero.
Dependencies are inferred from the claim text.