Control device of vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoichi Nakashima, Motoaki Kamimura, Atsushi Muto, Takafumi Inagaki
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Abstract
A control device of a vehicle includes between an engine and an automatic transmission a fluid transmission device transmitting power from a pump impeller coupled to the engine via a fluid to a turbine impeller coupled to the automatic transmission. The control device determines occurrence of a lost-drive state of the fluid transmission device based on an increase amount of a rotation speed of the engine after a predetermined time during start of the engine.
Claims3
A control device of a vehicle including, between an engine and an automatic transmission, a fluid coupling composed of a pump impeller coupled to the engine and a turbine impeller coupled to the automatic transmission, the fluid coupling transmitting power from the pump impeller via a fluid to the turbine impeller, wherein
- the control device is configured to determine occurrence of a lost-drive state of the fluid coupling based on whether an increase rate, obtained from an increase amount of a rotation speed of the engine after a predefined determination time during start of the engine from a rising point of the rotation speed of the engine, becomes equal to or greater than a preset determination threshold.
Dependencies are inferred from the claim text.