An Optimum Control Method for Engine Rotation Mode
A technology for optimizing control and engine, applied in the direction of machine/engine, mechanical equipment, gas turbine device, etc., it can solve the problems of hydraulic motor wear, vacuum pumping, hydraulic motor oil supply pressure below 0, etc., and achieve the effect of reducing impact and wear
Active Publication Date: 2021-11-05
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
After the hydraulic station is started, the oil supply pressure is established, and the hydraulic motor is controlled through the proportional valve. The proportional valve used before is not continuously adjustable, and can only be adjusted according to different gears, which has a certain influence on the engine rotation process. Impact, when the gear is lowered during the engine stop process, it is easy to cause the oil supply pressure of the hydraulic motor to be lower than 0, and the phenomenon of vacuuming will occur, which will cause the wear of the hydraulic motor
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Embodiment Construction
[0017] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0018] The technical solution adopted by the present invention is: an optimal control method of the engine belt rotation mode, which is characterized in that it includes the following steps:
[0019] Step 1: Determine the size of the external DC voltage signal required by the proportional valve used in the hydraulic station control system;
[0020] The proportional valve is a proportional valve whose opening can be adjusted continuously.
[0021] Step 2: The PLC control output sets the DC voltage to control the opening of the proportional valve. The PLC control program flow chart is as follows figure 2 As shown in t0-t1, the proportional valve opening is opened to the maximum, and the hydraulic motor gradually achieves a stable rotation of the engine;
[0022] Step 3: Control the proportional valve to slowly close the hydraulic motor du...
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The invention provides an optimized control method for the engine belt rotation mode, and relates to the technical field of engine ground belt rotation oil seal and unsealing control. The invention aims at adjusting the opening degree of the traditional proportional valve through the gear position, and directly connects the proportional valve gear according to the time sequence Position control is easy to have a certain impact on the engine during the starting process, and it is easy to cause insufficient oil supply to the hydraulic motor during the engine stop process, and the vacuum will cause serious wear and tear of the hydraulic motor. The proportional valve opening can be continuously adjusted. The external PLC control system The output DC voltage is continuously adjusted, and the proportional valve control program is readjusted to reduce the impact and wear during the entire operation.
Description
technical field [0001] The invention relates to the technical field of engine ground belt rotation oil seal and unsealing control, in particular to an optimal control method for engine belt rotation mode. Background technique [0002] When the engine is driven to turn the oil seal on the ground or when the seal is unsealed, the hydraulic motor provides power to turn the engine, and the process of turning the engine by the hydraulic motor is realized by controlling the hydraulic oil in the hydraulic station. After the hydraulic station is started, the oil supply pressure is established, and the hydraulic motor is controlled through the proportional valve. The proportional valve used before is not continuously adjustable, and can only be adjusted according to different gears, which has a certain influence on the engine rotation process. Impact, when the gear is lowered during the engine stop process, it is easy to cause the oil supply pressure of the hydraulic motor to be lowe...
Claims
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IPC IPC(8): F02C7/27F02C9/00
CPCF02C7/27F02C9/00
Inventor 石丹吴帅高明
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION