Patent ID: 11913542
Assignee: GUANGZHOU AUTOMOBILE GROUP CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A vehicle hydraulic control system, connected to a transmission controller, comprising:
a high-pressure control oil circuit comprising:
a main pressure regulating pilot solenoid valve connected to the transmission controller, and configured to adjust a main oil pressure according to an instruction of the transmission controller; and
a main pressure regulating mechanical valve;

a low-pressure cooling and lubricating oil circuit;
a mechanical pump communicated with the high-pressure control oil circuit;
a high-low pressure decoupling valve; and
an electronic pump communicated with the high-pressure control oil circuit or the low-pressure cooling and lubricating oil circuit through the high-low pressure decoupling valve;
wherein the main pressure regulating mechanical valve is configured to guide a flow output by at least one of the electronic pump and/or the mechanical pump communicated with the high-pressure control oil circuit to the low-pressure cooling and lubricating oil circuit according to a control of the main pressure regulating pilot solenoid valve,
wherein when the high-low pressure decoupling valve is in a coupled state, the electronic pump is communicated with the high-pressure control oil circuit, to supply oil to the high-pressure control oil circuit and the low-pressure cooling and lubricating oil circuit, and
wherein when the high-low pressure decoupling valve is in a decoupled state, the electronic pump is communicated with the low-pressure cooling and lubricating oil circuit, to supply oil to the low-pressure cooling and lubricating oil circuit;
wherein the low-pressure cooling and lubricating oil circuit comprises a hydraulic oil cooler, an external pressure filter connected to the hydraulic oil cooler, and a cooling and lubricating reversing valve connected to the external pressure filter;
wherein the hydraulic oil cooler is configured to cool oil flowing into the low-pressure cooling and lubricating oil circuit.