Up-shift control in an automatic transmission with negative input torque
First Claim
Patent Images
1. A transmission control module having a processor, the transmission control module comprising:
- a shift control module that generates an enable signal in response to an up-shift being requested and engine torque being below a threshold torque value, wherein generating the enable signal is suspended in response to the engine torque being above the threshold torque value; and
a turbine speed profile determination module that selectively generates a desired turbine speed profile,wherein, in response to the enable signal being generated, the shift control module controls a clutch pressure of an off-going clutch based on a measured turbine speed and the desired turbine speed profile.
12 Assignments
0 Petitions
Accused Products
Abstract
A transmission control module including a shift control module that generates an enable signal when an up-shift is requested and the engine torque is below a threshold torque value. A turbine speed profile determination module that selectively generates a desired turbine speed profile. The shift control module controls a clutch pressure of an off-going clutch based on a measured turbine speed and the desired turbine speed profile when the enable signal is generated.
15 Citations
20 Claims
-
1. A transmission control module having a processor, the transmission control module comprising:
-
a shift control module that generates an enable signal in response to an up-shift being requested and engine torque being below a threshold torque value, wherein generating the enable signal is suspended in response to the engine torque being above the threshold torque value; and a turbine speed profile determination module that selectively generates a desired turbine speed profile, wherein, in response to the enable signal being generated, the shift control module controls a clutch pressure of an off-going clutch based on a measured turbine speed and the desired turbine speed profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for controlling an up-shift in an automatic transmission, the method comprising:
-
generating, using a processor, an enable signal in response to an up-shift being requested and engine torque being below a threshold torque value, wherein generation of the enable signal is suspended in response to the engine torque being above the threshold torque value; selectively generating a desired turbine speed profile; and in response to the enable signal being generated, controlling a clutch pressure of an off-going clutch based on a measured turbine speed and the desired turbine speed profile. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification