Interrelated power delivery controls – including engine control – Transmission control – With brake control
Patent
1996-12-30
1998-09-01
Wright, Dirk
Interrelated power delivery controls, including engine control
Transmission control
With brake control
477 96, F16H 5954
Patent
active
058003070
ABSTRACT:
A system and a method for controlling gear shifting of automatic transmission vehicles, the system including a timer providing a timing signal, a vehicle speed sensor converting a vehicle speed to an electric signal and outputting the signal after detecting the vehicle speed, a throttle position sensor converting a throttle valve opening to an electric signal and outputting the signal after detecting a throttle valve opening, an accelerator switch for determining whether an accelerator pedal is pressed, a brake switch for determining whether a brake pedal is pressed, a microcontroller responsive to signals from the vehicle speed sensor and the throttle position sensor and having a control signal to prevent upshift if a driver presses the brake pedal after a predetermined time has lapsed, the time which is from the driver's release of the accelerator pedal in a condition of upshift. This improves damping force and provides for easy braking by preventing upshift when the system detects that the driver presses the brake pedal after a lapse of a predetermined time from releasing the accelerator pedal, even under the condition of shifting from low gear to high gear.
REFERENCES:
patent: 5025684 (1991-06-01), Stehle et al.
patent: 5048650 (1991-09-01), Takizawa
Hyundai Motor Company
Wright Dirk
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