A Diagnosis and Control Method for Preventing Failure of Electronic Oil Pump
An electronic oil pump and feedback current technology, which is applied in the field of diagnosis and control to prevent electronic oil pump failure, can solve problems such as failure to establish oil pressure, electronic oil pump vacuum, pump stuck, etc., to avoid failure, solve failure, and improve reliability Effect
Active Publication Date: 2022-03-01
钦州绿传科技有限公司
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Problems solved by technology
As a result, when switching from non-working to working state, the electronic oil pump may experience failures such as vacuum suction, pump stagnation, and failure to establish oil pressure. For example, the target speed cannot be reached, the speed is normal but the oil pressure cannot be established, etc.
[0004] At present, although there is a detection device to detect the working parameters of the electronic oil pump, for example, the speed and voltage of the electronic oil pump can be detected, but this can only be used to obtain the working parameters of the electronic oil pump in real time when the electronic oil pump is working, and it is impossible to check the electronic oil pump in advance. failure diagnosis, and failure prevention
Method used
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Embodiment Construction
[0022] The core idea of the present invention is based on the following considerations: since the electronic oil pump itself is an auxiliary oil pump, it is in a non-working state for a relatively long time, which makes it difficult to detect whether it fails. Under normal circumstances, the electronic oil pump is periodically rotated at a specified speed in order to detect whether the electronic oil pump can work normally.
[0023] see figure 1 , which shows a schematic flowchart of an embodiment of the present invention. First, it is judged whether the electronic oil pump is in a non-working state, and when it is determined that the electronic oil pump is in a non-working state, it is further judged whether its power supply voltage is normal. If the power supply voltage is normal, then proceed to the next step of control, otherwise the electric pump is prohibited from entering the working state. Correspondingly, since it has been judged that the electronic oil pump canno...
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The invention relates to a diagnosis and control method for preventing the failure of an electronic oil pump. In the non-working state of the electronic oil pump, a specific command speed is periodically given to the electronic oil pump to prevent the electronic oil pump from being in a working state from a long-term non-working state. If it does not work for a long time, there will be stuck or vacuum, so as to avoid the failure of the electronic oil pump; at the same time, comprehensively judge the actual speed, voltage and current of the electronic oil pump, determine the type of failure of the electronic oil pump, and then control the electronic oil pump according to the fault, so that the electronic oil pump can recover Usually, this diagnosis is also applicable during the working process of the electronic oil pump.
Description
technical field [0001] The invention belongs to the field of transmissions, and in particular relates to a diagnosis and control method for preventing failure of an electronic oil pump. Background technique [0002] In a transmission, a mechanical oil pump and an electronic oil pump are generally installed at the same time, wherein the mechanical oil pump is used as the main oil pump, and the electronic oil pump is generally used as the auxiliary oil pump. The functions of the electronic oil pump include: ①. Provide the main oil pressure when the mechanical oil pump cannot provide the main oil pressure. When starting; ②, to provide the lubricating oil pressure or flow of the lubrication system, such as in the special working conditions of vehicle operation (low speed and high torque, etc.), when the mechanical oil pump cannot provide sufficient lubricating flow, the electronic oil pump Step in to work, providing additional lubrication flow. Of course, in the design of the ...
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IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 戴振坤吕永安吴潇潇
Owner 钦州绿传科技有限公司