Pressure storage type inner rotor oil pump
A technology of oil pump and inner rotor, which is used in lubrication pumps, mechanical equipment, engine components, etc., can solve the problems of large oil supply, loss of driving power, insufficient lubrication, etc., to prevent wear of parts, reduce driving power, and reduce driving. The effect of power loss
Inactive Publication Date: 2020-06-16
HANGZHOU DIANZI UNIV
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Problems solved by technology
[0006] These problems all lead to the excessive oil supply of the traditional inner rotor oil pump when the engine is working stably, a large loss of driving power, and insufficient lubrication during the start-up process.
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Embodiment Construction
[0020] The present invention will be further described below in conjunction with accompanying drawing.
[0021] like figure 1 As shown, a pressure accumulating inner rotor oil pump includes a sprocket 1, an oil pump housing 2, a drive shaft 3, an inner rotor 4, an outer rotor 5, an oil pump cover 6, a one-way valve 7, and a pressure accumulating chamber 8, Centrifugal switching valve 10, pressure limiting valve 11 and pipeline 9, said oil pump housing 2 is provided with an outer rotor 5, said outer rotor 5 is provided with an inner rotor 4 corresponding to the outer rotor 5, said inner rotor 4 is connected to The outer rotor 5 is arranged eccentrically and can mesh with each other. The drive shaft 3 passes through the oil pump casing 2 and is connected with the inner rotor 4. The inner rotor 4 rotates coaxially with the drive shaft 3. One part of the oil pump casing A sprocket 1 is arranged on the side, and the sprocket 1 is fixedly connected with the drive shaft 3 . The oth...
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The invention discloses a pressure storage type inner rotor oil pump, and belongs to the field of vehicle engine lubricating. The pressure storage type inner rotor oil pump comprises a chain wheel, anoil pump case, a drive shaft, an inner rotor, an outer rotor, an oil pump cover, a pressure storage cavity, a centrifugal on-off valve and a pressure limiting valve. The outer rotor is arranged in the oil pump case. The inner rotor is arranged in the outer rotor. The inner rotor and the outer rotor are arranged eccentrically and can be engaged with ach other. The drive shaft penetrates through the oil pump case and is connected with the inner rotor. The chain wheel is arranged on one side of the oil pump case and is fixedly connected with the drive shaft. The oil pump cover is arranged on theother side of the oil pump case. An oil inlet and an oil outlet are arranged on the oil pump cover. The oil outlet is connected with the pressure storage cavity. The pressure storage cavity is connected with the centrifugal on-off valve. The centrifugal on-off valve is connected with the pressure limiting valve. By means of the pressure storage type inner rotor oil pump, the displacement of an oil pump needed for an engine can be remarkably reduced, the drive power of the oil pump can be reduced, and the losses of the drive power of the engine can be reduced.
Description
technical field [0001] The invention relates to the field of vehicle engine lubrication, in particular to a pressure accumulating type inner rotor oil pump. Background technique [0002] The function of the oil pump is to deliver the oil to the various friction parts of the engine, so that the oil circulates in the lubrication circuit to ensure that all parts of the engine are well lubricated. The oil pump is driven by the engine crankshaft, and when the engine starts, the oil pump outputs lubricating oil. The current problems in the design of oil pumps mainly include: [0003] (1) After the engine is started, it takes 3-5 seconds for the oil pump to output lubricating oil, and it takes 20-30 seconds for the remote end of the lubricating oil circuit (such as cams, rocker arms, hydraulic tappets, etc.) to reach the specified lubrication conditions. Therefore, the engine is in a state of insufficient lubrication during the starting process, and the moving parts are severely ...
Claims
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IPC IPC(8): F16N13/20F01M1/02
CPCF01M1/02F01M2001/0238F16N13/20
Inventor 刘忠民步晨嘉李昊
Owner HANGZHOU DIANZI UNIV