2-3 Up-shifting shift control device and method for an automatic transmission of a vehicle cross-reference to related application
AssigneeHyundai Motor Company
InventorJoung-Chul Kim
Life of this patent
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Abstract
In order to reduce shift shock in shifting from a 2 driving range to a 3 driving range and improve the endurance of an automatic transmission, a 2-3 up-shifting shift control device of an automatic transmission of the present invention is provided, comprising a vehicle speed sensor, a shift lever position sensor, a throttle position sensor, a shift control unit, and a shift drive unit performing a predetermined 2-3 upshifting drive control operation by controlling hydraulic pressures in response to the sensors.
Claims3
A 2-3 up-shifting shift control device of an automatic transmission of a vehicle, comprising:
- a vehicle speed sensor sensing a vehicle speed;
- a shift lever position sensor sensing a shift lever position of the vehicle;
- a throttle position sensor sensing a throttle valve opening value of the vehicle;
- a shift control unit outputting a 2-3 up-shifting drive control signal corresponding to the sensed throttle valve opening (TVO) value when the shift lever position is changed from a 2 driving range to a 3 driving range and the vehicle is driving;
- and
- a shift drive unit performing a predetermined 2-3 upshifting drive control operation by controlling hydraulic pressures in response to the control signal received from the shift control unit,
- wherein said 2-3 up-shifting drive control signal comprises signals for first, second, and third combinations of the intermediate solenoid valves, wherein said first, second and third combinations are determined based on a shift control condition corresponding to the throttle valve opening (TVO).
A shift control method of an automatic transmission of a vehicle comprising:
- sensing a vehicle speed;
- sensing a shift lever position of a vehicle;
- sensing a throttle valve opening value of the vehicle;
- determining a shift control condition corresponding to the sensed throttle valve opening (TVO) value when the shift lever position is changed from a 2 driving range to a 3 driving range and the vehicle is driving, and
- performing a 2-3 up-shifting control operation according to the determined shift control condition,
- wherein said performing a 2-3 up-shifting control utilizes a 2-3 up-shift drive control signal comprising signals for first, second, and third combinations of the intermediate solenoid valves, wherein said first, second and third combinations are determined based on a shift control condition corresponding to the throttle valve opening (TVO).
Dependencies are inferred from the claim text.