Lock-up clutch control apparatus
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsSei Kojima, Daisuke Inoue
Life of this patent
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Abstract
In one embodiment, when a condition (specifically, brake ON) of rising of a source pressure (line pressure) of a lock-up control valve is satisfied during deceleration lock-up control, a lock-up differential pressure instruction value is corrected to a low side with that source-pressure rising amount taken into consideration.
Claims6
A lock-up clutch control apparatus for a vehicle whereupon a motive power source, an automatic transmission, a fluid power transmission apparatus provided between the motive power source and the automatic transmission, and a lock-up clutch directly connecting an input side and an output side of the fluid power transmission apparatus are mounted, the lock-up clutch control apparatus comprising:
- a control unit for performing deceleration lock-up control to control engagement of the lock-up clutch upon deceleration of the vehicle and for outputting a lock-up differential pressure instruction value;
- and
- a lock-up differential pressure control portion for controlling a lock-up differential pressure of the lock-up clutch in accordance with the lock-up differential pressure instruction value by using a line pressure of a hydraulic control system including hydraulic control of the automatic transmission as a source pressure,
- wherein the control unit corrects the lock-up differential pressure instruction value to a low side when a condition of rising of the source pressure of the lock-up differential pressure control portion is satisfied during the deceleration lock-up control.
Dependencies are inferred from the claim text.