Apparatus for controlling temperature of fluid in power-transmission system and method of controlling temperature of fluid in power-transmission system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorShigeru Okuwaki
Life of this patent
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Abstract
A control apparatus controls the temperature of hydraulic fluid in a power-transmission system that has a hydrodynamic power-transmission system designed to transmit power between one rotational member and the another rotational member and that has a transmission coupled to the another rotational member in such a manner that power can be transmitted. The temperature of the hydraulic fluid can be controlled by controlling a subsystem associated with the power-transmission system while a vehicle is coasting.
Claims24
A control apparatus comprising:
- a power-transmission system coupled to a driving-power source;
- and
- a temperature controller that controls a temperature of fluid supplied to the power-transmission system by controlling a subsystem of the power-transmission system while a vehicle in which the power-transmission system is installed is coasting.
A method of controlling a temperature of fluid for a power-transmission system, comprising the steps of:
- supplying the fluid to the power-transmission system;
- determining whether or not a vehicle in which the power-transmission system is installed is coasting;
- and
- controlling a subsystem of the power-transmission system so as to control a temperature of the fluid if it is determined that the vehicle is coasting.
Dependencies are inferred from the claim text.