Vehicle, transmission, hydraulic control device and control method
A technology for control devices and transmissions, applied in the fields of vehicles, transmissions, and hydraulic control devices, to achieve the effect of reducing energy consumption
Inactive Publication Date: 2021-04-16
SAIC MOTOR
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Problems solved by technology
[0005] However, in this technical solution, only the preset spring pressure value of the oil pump switching valve can be used as the standard for switching the oil pump switching valve in single and double pump modes, and it is difficult to control the oil pump switching valve in single and double mode under various working conditions. Switching between pump modes for active control
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[0030] Example embodiments will now be described more fully below with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical s...
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The embodiment of the invention provides a vehicle, a transmission, a hydraulic control device and a control method. The hydraulic control device comprises: an oil pump switching valve, communicated with a first oil pump and a second oil pump and used for switching and controlling the load state of the first oil pump or the second oil pump, wherein the load state includes a first load state and a second load state; and a switching control unit, communicated with the oil pump switching valve through a first oil way and used for controlling the oil pump switching valve to switch the load state of the first oil pump or the second oil pump by adjusting the oil way pressure of the first oil way so as to switch the oil pump switching valve between a single-pump mode and a double-pump mode. According to the technical scheme of the embodiment of the invention, the single-pump mode and the double-pump mode of the oil pump switching valve can be accurately and actively controlled under various working conditions, so that the flow required by a hydraulic system can be accurately controlled, and the energy consumption of the hydraulic system can be reduced.
Description
technical field [0001] The embodiments of the present application relate to the technical field of vehicle engineering, and in particular to a vehicle, a transmission, a hydraulic control device, and a hydraulic control method. Background technique [0002] With the increasing popularity of vehicles in people's work and life, transmissions such as CVT [0003] (Continuously Variable Transmission, continuously variable transmission) is also more and more widely used, how to reduce the energy consumption of the transmission hydraulic system has become the focus of attention. [0004] In one technical solution, when the engine is running at low speed or the flow demand of the hydraulic system is high, the dual pumps are used to work simultaneously to provide high pressure to the hydraulic system, that is, the oil pump switching valve works in the dual pump mode; When the flow demand of the system is low, the oil pump switching valve switches the flow of one of the double pumps...
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IPC IPC(8): F16H61/00
Inventor 陈志浩张涔涔孙光辉李晨张凤莲李炎王晓秋龚伟国陶海龙崔卫国仇杰方伟荣
Owner SAIC MOTOR