Automatic gear shifting method
AssigneeNissan Motor Co., Ltd.
InventorsMasaaki Suga, Chiaki Kobayashi, Hisaaki Tohzima
Life of this patent
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Abstract
According to an automatic gear shifting method of the present invention, the actual gear shifting is carried out, when the throttle valve opening degree is greater than a predetermined opening degree, after the following steps have taken place, a step of initiating the closing movement of the throttle valve and when a predetermined time has passed after the initiation of the closing movement of the throttle valve a step of disengaging the clutch.
Claims4
An automatic gear shifting method in a motor vehicle including an engine with a throttle valve operatively connected to an accelerator pedal, a manual gear box and a clutch operatively disposed between the engine and the gear box, said method being carried out with the accelerator pedal kept depressed to a depression degree and comprising the following steps when the setting of the throttle valve is wider than a predetermined opening degree:
- a step of initiating closing movement of the throttle valve independently of the accelerator pedal from an initial opening degree which corresponds to said depression degree of the accelerator pedal to a closed position;
- a second step of disengaging the clutch when a predetermined time has passed after the occurrence of said first step;
- a third step of shifting into a gear in the manual gear box after the initiation of said second step;
- a fourth step of initiating return movement of the throttle valve to said initial opening degree which corresponds to said depression degree of the accelerator pedal;
- a fifth step of reengaging the clutch.
Dependencies are inferred from the claim text.