Continuously variable transmission control method and continuously variable transmission system
AssigneeNissan Motor Co., Ltd.
InventorsTomoyuki Nakano, Hiromu Terai, Ryohey Toyota
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Abstract
A continuously variable transmission control method for controlling entry and exit of oil in a primary pulley oil chamber by an electric oil pump disposed in an oil path between the primary pulley oil chamber and a secondary pulley oil chamber, the control method including: comparing a temperature of the electric oil pump with a first threshold; and restricting a shift amount of a continuously variable transmission when the temperature of the electric oil pump is higher than the first threshold.
Claims5
A continuously variable transmission control method for controlling entry and exit of oil in a primary pulley oil chamber by an electric oil pump disposed in an oil path between the primary pulley oil chamber and a secondary pulley oil chamber, the control method comprising:
- comparing a temperature of the electric oil pump with a first threshold;
- and
- restricting a shift amount of a continuously variable transmission when the temperature of the electric oil pump is higher than the first threshold.
A continuously variable transmission system comprising:
- an electric oil pump disposed in an oil path between a primary pulley oil chamber and a secondary pulley oil chamber;
- a controlling portion configured to drive the electric oil pump to control entry and exit of oil in the primary pulley oil chamber;
- and
- a temperature acquisition portion configured to acquire a temperature of the electric oil pump, wherein, when the temperature of the electric oil pump is higher than a first threshold, the controlling portion restricts a shift amount of a continuously variable transmission.
Dependencies are inferred from the claim text.