Hydraulic pressure supply apparatus for vehicle
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United States of America Patent
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Feb 13, 2018
Issued Date -
N/A
app pub date -
Apr 22, 2014
filing date -
Jul 26, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hydraulic pressure supply apparatus, capable of quickly supplying hydraulic pressure to a power transmission apparatus and extending the service life of an accumulator for supplying hydraulic pressure to the power transmission apparatus, includes an oil pump which uses an internal combustion engine as a motive power source and is connected to the power transmission apparatus via an oil passage, for supplying operating hydraulic pressure to the power transmission apparatus, an accumulator connected to the oil passage and capable of accumulating hydraulic pressure, and a switching valve capable of effecting communication between the accumulator and the oil passage by opening during operation of the engine and cutting off the communication therebetween by closing during automatic stop of the engine. When it is determined that the engine is under manual stop caused by turn-off of an ignition switch of a vehicle, manual stop-time control for opening the switching valve is performed.
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