Hydraulic control device for automatic transmission and control method therefor
AssigneeJATCO Ltd
InventorsKohshi TAMAI, Takao ARIMATSU
Life of this patent
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Abstract
A vehicle control device including an electronically controlled throttle device and configured to control a vehicle for supplying a hydraulic pressure to a friction engaging element of a transmission on the basis of a throttle valve opening controls a start timing of a supply of the hydraulic pressure to the friction engaging element on the basis of an accelerator pedal opening and the throttle valve opening if a shift lever is changed from an advance position to a reverse position or from the reverse position to the advance position.
Claims11
A hydraulic control device for automatic transmission including an electronically controlled throttle device for changing a throttle valve opening of a prime mover by an electric actuator on the basis of an accelerator pedal opening and configured to supply a hydraulic pressure to a friction engaging element of a transmission on the basis of the throttle valve opening, comprising:
- a controller configured to detect the accelerator pedal opening, configured to detect the throttle valve opening, configured to detect a position of a shift lever, and configured to control a start timing of a supply of the hydraulic pressure to the friction engaging element on the basis of the accelerator pedal opening and the throttle valve opening if the shift lever is changed from an advance position to a reverse position or from the reverse position to the advance position.
A control method for a hydraulic control device including an electronically controlled throttle device for changing a throttle valve opening of a prime mover by an electric actuator on the basis of an accelerator pedal opening and configured to supply a hydraulic pressure to a friction engaging element of a transmission on the basis of the throttle valve opening, comprising:
- detecting the accelerator pedal opening;
- detecting the throttle valve opening;
- detecting a position of a shift lever;
- and
- controlling a start timing of a supply of the hydraulic pressure to the friction engaging element on the basis of the accelerator pedal opening and the throttle valve opening if the shift lever is changed from an advance position to a reverse position or from the reverse position to the advance position.
A hydraulic control device for automatic transmission including an electronically controlled throttle device for changing a throttle valve opening of a prime mover by an electric actuator on the basis of an accelerator pedal opening and configured to supply a hydraulic pressure to a friction engaging element of a transmission on the basis of the throttle valve opening, comprising:
- accelerator pedal opening detection means for detecting the accelerator pedal opening;
- throttle valve opening detection means for detecting the throttle valve opening;
- shift lever position detection means for detecting a position of a shift lever;
- and
- hydraulic control means for controlling a start timing of a supply of the hydraulic pressure to the friction engaging element on the basis of the accelerator pedal opening and the throttle valve opening if the shift lever is changed from an advance position to a reverse position or from the reverse position to the advance position.
Dependencies are inferred from the claim text.