Guangzhou Automobile Group has patented a vehicle hydraulic control system connected to a transmission controller. The system includes high-pressure and low-pressure circuits, mechanical and electronic pumps, and a decoupling valve for efficient oil flow regulation. The design aims to optimize oil pressure and cooling for improved vehicle performance. GlobalData’s report on Guangzhou Automobile Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Guangzhou Automobile Group, was a key innovation area identified from patents. Guangzhou Automobile Group's grant share as of February 2024 was 78%. Grant share is based on the ratio of number of grants to total number of patents.
Vehicle hydraulic control system with high-low pressure decoupling valve
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A recently granted patent (Publication Number: US11913542B2) discloses a vehicle hydraulic control system connected to a transmission controller. The system includes a high-pressure control oil circuit with a main pressure regulating pilot solenoid valve and a main pressure regulating mechanical valve to adjust main oil pressure. It also features a low-pressure cooling and lubricating oil circuit, a mechanical pump, a high-low pressure decoupling valve, and an electronic pump. The system allows for the adjustment of oil flow to the low-pressure circuit based on the control of the main pressure regulating pilot solenoid valve. Additionally, the system includes components such as a hydraulic oil cooler, an external pressure filter, and a cooling and lubricating reversing valve in the low-pressure circuit to cool the oil.
Furthermore, the patent describes a vehicle hydraulic control method executed by the transmission controller. The method involves implementing a hydraulic control strategy based on the target working mode, collecting hydraulic state data, and dynamically adjusting the system's working state. The adjustment strategy includes controlling the high-low pressure decoupling valve, adjusting the main pressure regulating pilot solenoid valve, and engaging various components based on the working mode. The method also involves monitoring rotational speed data, oil pressure data, and oil temperature data to make real-time adjustments to the system. Overall, the patented system and method aim to optimize the performance and efficiency of the vehicle hydraulic control system through precise control and monitoring mechanisms.
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