CN107355664A - A kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise - Google Patents

A kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise Download PDF

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Publication number
CN107355664A
CN107355664A CN201710606752.6A CN201710606752A CN107355664A CN 107355664 A CN107355664 A CN 107355664A CN 201710606752 A CN201710606752 A CN 201710606752A CN 107355664 A CN107355664 A CN 107355664A
Authority
CN
China
Prior art keywords
oil
rotor
fuel
area
oil pump
Prior art date
Application number
CN201710606752.6A
Other languages
Chinese (zh)
Inventor
张青巧
Original Assignee
中国第汽车股份有限公司
中国第一汽车股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国第汽车股份有限公司, 中国第一汽车股份有限公司 filed Critical 中国第汽车股份有限公司
Priority to CN201710606752.6A priority Critical patent/CN107355664A/en
Publication of CN107355664A publication Critical patent/CN107355664A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N13/00Lubricating-pumps
    • F16N13/20Rotary pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • F01M2001/0207Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238Rotary pumps

Abstract

The present invention relates to a kind of rotor-type oil pump, specifically a kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise, belong to engine oil pump technical field.It includes oil pump case, and oil pump case is provided with balance oil groove, and the starting end face for balancing oil groove connects with the fuel-displaced big end of area's crescent, and the termination endface for balancing oil groove is extended from the fuel-displaced big end of area's crescent to the big end of oil-feed area crescent.The present invention can reduce the instantaneous maximum speed of fuel-displaced area's inner engine oil reflux and instantaneous reflux amount by a relatively large margin, so as to reduce reflux compression shock to caused by fuel-displaced area, also the pressure pulse strength in fuel-displaced area is just reduced, make charge oil pressure more steady, preferably meet the needs of lubricating system, improve reliability, economy and the durability of engine work;With the reduction of the instantaneous maximum speed of machine oil reflux, flow noise also decreases.

Description

A kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise

Technical field

The present invention relates to a kind of rotor-type oil pump, specifically one kind can reduce charge oil pressure fluctuation intensity and flowing The rotor-type oil pump of noise, belong to engine oil pump technical field.

Background technology

In the prior art, rotor-type oil pump has that charge oil pressure is unstable, fluctuation intensity is big, flow noise is big etc. and lacked Point, especially in the slow-speed of revolution, high charge oil pressure operating mode.Impeller pump at work, with the rotation of rotor, when pocketed oil chamber and fuel-displaced area The moment of connection, machine oil from the pocketed oil chamber of fuel-displaced area's reverse direction flow low-pressure of high pressure, because fuel-displaced area and pocketed oil chamber have it is larger Pressure differential, therefore the amount of machine oil reflux is larger and reflux speed is higher, and this just forms obvious underbalance pulse in fuel-displaced area, with Rotor to be rotated further, pocketed oil intracavitary machine oil is squeezed into fuel-displaced area, forms positive pressure pulse, this positive-negative voltage pulse in fuel-displaced area Be alternately produced the charge oil pressure pulsation for being formed fuel-displaced area, while the high speed reflux of machine oil can also produce flow noise.

The content of the invention

It is an object of the present invention to overcome the above deficiencies, so as to provide one kind can reduce charge oil pressure fluctuation intensity and The rotor-type oil pump of flow noise, the fluctuation intensity of charge oil pressure can be reduced so that charge oil pressure is more steady, flow noise It is smaller.

According to technical scheme provided by the invention, a kind of rotator type that can reduce charge oil pressure fluctuation intensity and flow noise Lubricating oil pump includes oil pump case, is provided with intermeshing internal rotor and outer rotor in oil pump case, and oil pump case is towards internal rotor Fuel-displaced area's crescent and oil-feed area crescent are provided with the end face of outer rotor, pocketed oil chamber is formed between internal rotor and outer rotor, It is characterized in that:Oil pump case is provided with balance oil groove, and the starting end face for balancing oil groove connects with the fuel-displaced big end of area's crescent, balances The termination endface of oil groove is extended from the fuel-displaced big end of area's crescent to the big end of oil-feed area crescent.

Further, it is circular arc oil groove to balance oil groove, and the center line for balancing oil groove is inner and outer Rotator in relevant position Path of action.

Further, the termination endface for balancing oil groove is arc surface or straight end face.

Further, the cross section for balancing oil groove is rectangle or trapezoidal.

Compared with the prior art the present invention has advantages below:

The present invention it is simple in construction, compact, reasonable, can reduce by a relatively large margin fuel-displaced area's inner engine oil reflux instantaneous maximum speed and Instantaneous reflux amount, so as to reduce reflux compression shock to caused by fuel-displaced area, also just reduces the pressure pulse strength in fuel-displaced area, Make charge oil pressure more steady, preferably meet the needs of lubricating system, improve the reliability of engine work, economy and durable Property;With the reduction of the instantaneous maximum speed of machine oil reflux, flow noise also decreases.

Brief description of the drawings

Fig. 1 is front view of the present invention.

Fig. 2 is balance oil groove front view.

Fig. 3 is the schematic diagram of working condition one of the present invention.

Fig. 4 is the schematic diagram of working condition two of the present invention.

Description of reference numerals:The fuel-displaced area's crescent of 1- oil pump cases, 2- internal rotors, 3- outer rotors, 4-, 5- oil-feeds area crescent moon Groove, 6- pocketed oils chamber, 7- balances oil groove, 8- startings end face, 9- termination endfaces.

Embodiment

The present invention will be further described with reference to the embodiment in accompanying drawing below:

As shown in Figure 1 and 2, the invention mainly comprises oil pump case 1, oil pump case 1 are interior provided with intermeshing internal rotor 2 and outer Rotor 3.Oil pump case 1 is provided with fuel-displaced area's crescent 4 and oil-feed area crescent 5 towards the end face of internal rotor 2 and outer rotor 3, Pocketed oil chamber 6 is formed between internal rotor 2 and outer rotor 3.

In order to reduce fuel-displaced area's engine oil pressure fluctuation intensity and flow noise, oil pump case 1 is provided with balance oil groove 7, put down The starting end face 8 of weighing apparatus oil groove 7 connects with fuel-displaced area's crescent 4 end greatly, balances the termination endface 9 of oil groove 7 by fuel-displaced area's crescent 4 It is big to hold to the end extension greatly of oil-feed area crescent 5.

The balance oil groove 7 is circular arc oil groove, and the center line for balancing oil groove 7 is inner and outer Rotator 2,3 in relevant position Path of action.

The termination endface of the balance oil groove 7 is arc surface or straight end face.

The cross section of the balance oil groove 7 is rectangle or trapezoidal.

Impeller pump at work, with the rotation of rotor, when going to position shown in Fig. 3, pocketed oil chamber also not with fuel-displaced area When connecting, but being connected with balance oil groove, machine oil enters the tired of low-pressure by balancing oil groove from fuel-displaced area's reflux of high pressure Oil pocket, because the width and depth dimensions that balance oil groove are smaller, reflux passage is controlled, the reflux amount of unit interval inner engine oil It is smaller, the negative pressure impact strength that fuel-displaced area is formed is weakened, as rotor is rotated further.When going to position shown in Fig. 4, pocketed oil When chamber connects with fuel-displaced area, the pressure difference between twoth area has declined, and now the secondary counter flow velocity degree of machine oil and reflux amount also obtain To reduce, when rotor is rotated further, pocketed oil intracavitary machine oil is squeezed into fuel-displaced area, and positive pressure pulse is formed in fuel-displaced area, completes pump Oil.The design that this patent balances oil groove by increasing extends the machine oil reflux time, reduces machine oil reflux speed and reflux amount, Reduce the underbalance pulse to caused by fuel-displaced area so that charge oil pressure fluctuation intensity weakens, and pressure is more steady, and flow noise is more It is small.Because balance oil groove communicates with fuel-displaced area, do not communicated with oil-feed area, therefore do not interfere with the performance of lubricating oil pump.

The design that the present invention balances oil groove by increasing extends the machine oil reflux time, reduces machine oil reflux speed and anti- Flow, reduce the underbalance pulse to caused by fuel-displaced area so that charge oil pressure fluctuation intensity weakens, and pressure is more steady, and flowing is made an uproar Sound is smaller.Because balance oil groove communicates with fuel-displaced area's crescent, do not communicated with oil-feed area crescent, therefore do not interfere with lubricating oil pump Performance.

Claims (4)

1. a kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise, including oil pump case(1), oil pump Housing(1)It is interior to be provided with intermeshing internal rotor(2)And outer rotor(3), oil pump case(1)Towards internal rotor(2)And outer rotor (3)End face be provided with fuel-displaced area's crescent(4)With oil-feed area crescent(5), internal rotor(2)And outer rotor(3)Between formed Pocketed oil chamber(6), it is characterized in that:Oil pump case(1)It is provided with balance oil groove(7), balance oil groove(7)Starting end face(8)With going out Oily area's crescent(4)Big end connection, balances oil groove(7)Termination endface(9)By fuel-displaced area's crescent(4)Hold to the oil-feed area moon greatly Alveolus(5)Big end extension.
2. a kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise as claimed in claim 1, its It is characterized in:The balance oil groove(7)For circular arc oil groove, oil groove is balanced(7)Center line be inner and outer Rotator(2、3)Corresponding The path of action of position.
3. a kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise as claimed in claim 1, its It is characterized in:The balance oil groove(7)Termination endface be arc surface or straight end face.
4. a kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise as claimed in claim 1, its It is characterized in:The balance oil groove(7)Cross section be rectangle or trapezoidal.
CN201710606752.6A 2017-07-24 2017-07-24 A kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise CN107355664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710606752.6A CN107355664A (en) 2017-07-24 2017-07-24 A kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710606752.6A CN107355664A (en) 2017-07-24 2017-07-24 A kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise

Publications (1)

Publication Number Publication Date
CN107355664A true CN107355664A (en) 2017-11-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710606752.6A CN107355664A (en) 2017-07-24 2017-07-24 A kind of rotor-type oil pump that can reduce charge oil pressure fluctuation intensity and flow noise

Country Status (1)

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CN (1) CN107355664A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201723266U (en) * 2010-06-18 2011-01-26 上海幸福摩托车有限公司 Oil pump for automobile engine
CN202868269U (en) * 2012-10-30 2013-04-10 重庆跃进机械厂有限公司 Low noise gear type oil pump
CN103742775A (en) * 2013-12-30 2014-04-23 东风汽车公司 Vane variable displacement oil pump
CN205155526U (en) * 2015-11-30 2016-04-13 长城汽车股份有限公司 Engine lubrication system and crescent gear pump thereof
CN205534993U (en) * 2016-04-08 2016-08-31 上海幸福摩托车有限公司 Gear formula variable pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201723266U (en) * 2010-06-18 2011-01-26 上海幸福摩托车有限公司 Oil pump for automobile engine
CN202868269U (en) * 2012-10-30 2013-04-10 重庆跃进机械厂有限公司 Low noise gear type oil pump
CN103742775A (en) * 2013-12-30 2014-04-23 东风汽车公司 Vane variable displacement oil pump
CN205155526U (en) * 2015-11-30 2016-04-13 长城汽车股份有限公司 Engine lubrication system and crescent gear pump thereof
CN205534993U (en) * 2016-04-08 2016-08-31 上海幸福摩托车有限公司 Gear formula variable pump

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Application publication date: 20171117