Oblon, McClelland, Maier & Neustadt, L.L.P.
Lubrication control device for transmission
A lubrication control device for a transmission includes an oil pump, a heat exchanger, an oil quantity control valve, a first bypass oil passage, and an electronic control unit. The heat exchanger is connected between the oil pump and a lubricated portion of the transmission. The oil quantity control valve includes an inflow port, a supply port, and a discharge port. The supply port is connected to the heat exchanger. The oil quantity control valve is configured to control a supply oil quantity as a flow rate of the oil flowing from the inflow port to the supply port and discharge a residue of the oil from the discharge port. The first bypass oil passage is connected to the discharge port. The electronic control unit is configured to adjust the oil quantity control valve such that the supply oil quantity increases as a temperature of the oil increases.
TOYOTA JIDOSHA KABUSHIKI KAISHA
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Takahiro Kazuya Daisuke Satoshi
Shiina Arakawa Tokozakura Tominaga