Hydraulic pressure supply system of automatic transmission for vehicle
AssigneeHyundai Motor Company
InventorTaehwan WI
Life of this patent
Estimating the term…
Abstract
A hydraulic pressure supply system of an automatic transmission for a vehicle may be provided with first and second pump chambers and may supply hydraulic pressure generated at the first and second pump chambers selectively to a high pressure portion or the high pressure portion and a low pressure portion. The hydraulic pressure generated at the first pump chamber may be supplied to the high pressure portion through a high-pressure regulator valve, and the hydraulic pressure generated at the second pump chamber may be supplied to the low pressure portion through a low-pressure regulator valve or may be supplied to the high-pressure regulator valve according to switching operation of a switch valve.
Claims20
A hydraulic pressure supply system of an automatic transmission for a vehicle comprising:
- a hydraulic pump provided with first and second pump chambers formed therein and discharging hydraulic pressure generated at the first and second pump chambers;
- a high-pressure line supplying the hydraulic pressure discharged from the first pump chamber to a high pressure portion;
- a switch valve selectively supplying the hydraulic pressure discharged from the second pump chamber to the high-pressure line or a first low-pressure line;
- a low-pressure regulator valve regulating the hydraulic pressure supplied from the first low-pressure line to be stable and supplying the regulated hydraulic pressure to a low pressure portion through a second low-pressure line;
- a high-pressure regulator valve regulating the hydraulic pressure supplied to the high-pressure line to be stable and supplying the regulated hydraulic pressure to the high pressure portion;
- and
- a first recirculation line supplying recirculated hydraulic pressure of the high-pressure regulator valve to the low pressure portion.
A hydraulic pressure supply system of an automatic transmission for a vehicle comprising:
- first and second pump chambers, wherein system selectively supplies hydraulic pressure generated at the first and second pump chambers to a high pressure portion or the high pressure portion and a low pressure portion;
- wherein the hydraulic pressure generated at the first pump chamber is supplied to the high pressure portion through a high-pressure regulator valve, and the hydraulic pressure generated at the second pump chamber is supplied to the low pressure portion through a low-pressure regulator valve or is supplied to the high-pressure regulator valve according to switching operation of a switch valve;
- and
- wherein recirculated hydraulic pressure of the high-pressure regulator valve is additionally supplied to the low pressure portion.
Dependencies are inferred from the claim text.