Shift control method for automatic transmission
AssigneeHyundai Motor Company
InventorPyung-Hwan Yu
Life of this patent
Estimating the term…
Abstract
A shift control method for an automatic transmission is provided that includes: an ECU control of generating a throttle compensation control flag having data for whether a shift delay is needed, and of transmitting the generated throttle compensation control flag to a TCU, when a throttle opening rate is controlled in such a way that the throttle opening rate is not proportional to a depression of an acceleration pedal; and a TCU control of delaying a gear shift for a predetermined shift delay time period if it is determined that the shift delay is needed by reading the transmitted throttle compensation control flag, and of performing the gear shift.
Claims9
A shift control system for an automatic transmission of a vehicle including an engine throttle, said system comprising:
- an electric control unit generating a throttle compensation control flag indicative of whether a shift delay is needed when a throttle opening rate is not proportional to depression of an acceleration pedal;
- and
- a transmission control unit communicating with the electronic control unit to receive said control flag, said transmission control unit delaying a gear shift for a predetermined shift delay time period based on the received throttle compensation control flag.
A shift control method for an automatic transmission, the method comprising:
- determining on the basis of an engine speed, a turbine speed and a throttle opening rate whether predetermined shift delay conditions are satisfied;
- delaying a gear shift for a predetermined time period if it is determined that the predetermined shift conditions are satisfied;
- and
- performing a gear shift.
Dependencies are inferred from the claim text.