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

Claim 4:
5. A vehicle hydraulic control method, performed by a transmission controller, comprising:
executing a hydraulic control strategy corresponding to a target working mode in a target working mode, to control a vehicle hydraulic control system to work;
collecting hydraulic state data of the vehicle hydraulic control system; and
dynamically adjusting a working state of the vehicle hydraulic control system according to the hydraulic state data and a preset adjustment strategy;
wherein the executing the hydraulic control strategy corresponding to the target working mode in the target working mode, to control the vehicle hydraulic control system to work comprises:
adjusting a current of a main pressure regulating pilot solenoid valve on a high-pressure control oil circuit, and controlling a cooling and lubricating reversing valve to be in an on state, making a generator connected to the cooling and lubricating reversing value enter a working state, if the target working mode is a hybrid working mode;
adjusting the current of the main pressure regulating pilot solenoid valve, controlling a direct-drive solenoid valve on the high-pressure control oil circuit to engage with a clutch corresponding to the hybrid working mode, making a mechanical pump supply oil to the high-pressure control oil circuit and a low-pressure cooling and lubricating oil circuit; and
controlling a high-low pressure decoupling valve to be in a decoupled state, so that an 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 hydraulic state data is rotational speed data of the mechanical pump in the hybrid working mode, and
wherein the dynamically adjusting the working state of the vehicle control system according to the hydraulic state data and the preset adjustment strategy comprises:
controlling the high-low pressure decoupling valve to be in a coupled state, if the rotational speed data of the mechanical pump is less than a first present rotational speed threshold; and
controlling the high-low pressure decoupling valve to be in a decoupled state, if the rotational speed data of the mechanical pump is not less than a first preset rotational speed threshold and less than a second preset rotational speed threshold.