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Rotor type oil pump capable of reducing oil supply pressure pulsation intensity and flowing noise

A rotor-type oil pump and pressure pulsation technology, which is applied to engine components, pressure lubricants, machines/engines, etc., can solve problems such as unstable oil supply pressure, high pulsation intensity, and large flow noise, so as to improve reliability, Effect of reducing pressure pulsation intensity and flow noise reduction

Inactive Publication Date: 2017-11-17
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the rotor type oil pump has disadvantages such as unstable oil supply pressure, high pulsation intensity, and large flow noise, especially in low speed and high oil supply pressure conditions

Method used

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  • Rotor type oil pump capable of reducing oil supply pressure pulsation intensity and flowing noise
  • Rotor type oil pump capable of reducing oil supply pressure pulsation intensity and flowing noise
  • Rotor type oil pump capable of reducing oil supply pressure pulsation intensity and flowing noise

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Embodiment Construction

[0015] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0016] like Figure 1~2 As shown, the present invention mainly includes an oil pump casing 1, and an inner rotor 2 and an outer rotor 3 which are engaged with each other are arranged inside the oil pump casing 1. On the end surface of the oil pump casing 1 facing the inner rotor 2 and the outer rotor 3, there are crescent grooves 4 in the oil outlet area and crescent grooves 5 in the oil inlet area, and an oil trapped cavity 6 is formed between the inner rotor 2 and the outer rotor 3 .

[0017] In order to reduce the oil pressure pulsation intensity and flow noise in the oil outlet area, the oil pump housing 1 is provided with a balance oil groove 7, the starting end face 8 of the balance oil groove 7 communicates with the big end of the crescent groove 4 in the oil outlet area, and the end face 9 of the balance oil groove 7 It extends from the big en...

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Abstract

The invention relates to a rotor type oil pump, in particular to a rotor type oil pump capable of reducing oil supply pressure pulsation intensity and flow noise, and belongs to the technical field of engine oil pumps. It includes the oil pump housing, on which there is a balance oil groove, the starting end face of the balance oil groove is connected with the big end of the crescent groove in the oil outlet area, and the end face of the balance oil groove is from the big end of the crescent groove in the oil outlet area to the crescent groove in the oil inlet area Big end extended. The present invention can greatly reduce the instantaneous maximum speed and instantaneous reverse flow rate of the engine oil backflow in the oil outlet area, thereby reducing the pressure impact caused by the backflow on the oil outlet area, and also reducing the pressure pulsation intensity in the oil outlet area, making the supply The oil pressure is more stable, which can better meet the needs of the lubrication system and improve the reliability, economy and durability of the engine; as the instantaneous maximum speed of oil backflow decreases, the flow noise also decreases.

Description

technical field [0001] The invention relates to a rotor type oil pump, in particular to a rotor type oil pump capable of reducing oil supply pressure pulsation intensity and flow noise, and belongs to the technical field of engine oil pumps. Background technique [0002] In the prior art, the rotor type oil pump has disadvantages such as unstable oil supply pressure, high pulsation intensity, and large flow noise, especially in low speed and high oil supply pressure working conditions. When the rotor pump is working, with the rotation of the rotor, when the trapped oil chamber communicates with the oil outlet area, the oil flows back from the high pressure oil outlet area to the low pressure trapped oil chamber, because the oil outlet area and the trapped oil chamber There is a large pressure difference, so the amount of oil backflow is large and the backflow speed is high, which forms an obvious negative pressure pulse in the oil outlet area. As the rotor continues to rotat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16N13/20F01M1/02
CPCF16N13/20F01M2001/0238
Inventor 张青巧
Owner CHINA FIRST AUTOMOBILE
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