Hydraulic circuit device and line pressure boosting method for hydraulic circuit
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United States of America
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Jan 7, 2020
Grant Date -
Oct 4, 2018
app pub date -
Mar 8, 2018
filing date -
Mar 8, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A hydraulic circuit device for a vehicle, includes a clutch, a flow path, a fluid pump, a pressure generating device, and a control valve. The control valve is configured to determine whether a transmission start-stop function activation condition other than a vehicle speed is satisfied, determine whether a system start-stop function activation condition related to a component of the vehicle is satisfied, the component being other than the transmission, determine whether the vehicle speed is equal to or lower than a first speed threshold, and boost a line pressure of the flow path to accumulate pressure in the pressure generating device for preparing activation of the start-stop function if it is determined that the transmission start-stop function activation condition and the system start-stop function activation condition are satisfied, and if it is determined that the vehicle speed is equal to or lower than the first speed threshold.
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