CN104728586A - Oil pump - Google Patents

Oil pump Download PDF

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Publication number
CN104728586A
CN104728586A CN201510140764.5A CN201510140764A CN104728586A CN 104728586 A CN104728586 A CN 104728586A CN 201510140764 A CN201510140764 A CN 201510140764A CN 104728586 A CN104728586 A CN 104728586A
Authority
CN
China
Prior art keywords
oil
transmission shaft
sprocket wheel
pump
rotor
Prior art date
Application number
CN201510140764.5A
Other languages
Chinese (zh)
Inventor
王锦艳
李龙超
朱东升
张良超
许涛
杜鹏
侯亦波
阮仁宇
路明
杨冰
刘芯娟
Original Assignee
安徽江淮汽车股份有限公司
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 安徽江淮汽车股份有限公司 filed Critical 安徽江淮汽车股份有限公司
Priority to CN201510140764.5A priority Critical patent/CN104728586A/en
Publication of CN104728586A publication Critical patent/CN104728586A/en

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Abstract

The invention discloses an oil pump. A chain wheel is driven by an engine crankshaft through chain transmission, an inner rotor is driven by the chain wheel through a transmission shaft, and an outer rotor is driven by the inner rotor, so that lubricating oil is sucked in from an oil suction port of a pump body. Only when the pressure of the lubricating oil sucked in reaches certain pressure, is a relief valve on an oil outlet ejected, and then the lubricating oil is extruded out of the oil outlet. After the relief valve is additionally mounted on the oil outlet of the pump body, only when a volume cavity formed by the inner rotor and the outer rotor reaches certain pressure, can the relief valve be ejected by the lubricating oil to generate backflow. Accordingly, the backflow quantity of the lubricating oil can be decreased to enable as much lubricating oil as possible to be used for lubricating components in an engine, and further the lubrication effect is significantly promoted and the service life of the engine is prolonged.

Description

Oil pump

Technical field

The invention belongs to vehicle motor field, particularly a kind of oil pump.

Background technique

Engine lubrication is in greasing, and the effect of oil pump is forced to be sent to the lubricating component needed in motor by the machine oil of certain pressure, thus reduce the friction between each parts, extends the working life of motor.

Along with the release of the new fuel economy regulation of country and the enhancing of energy-conserving and environment-protective consciousness, become displacement oil pump and be widely used.In change displacement oil pump working procedure, engine crankshaft drives internal rotor to rotate, and internal rotor drives external rotor, and form closed cavity between internal rotor and external rotor, when turning over from inlet port, lubricant oil is not inhaled into; When the cavity and oil outlet that suck lubricant oil are connected, the volume in chamber reduces, and oil pressure raises, and lubricant oil extrudes from oil outlet.Motor ceaselessly operates, and oil pump also ceaselessly operates, and forces lubricant oil by the path circulation of regulation.But lubricant oil, in cyclic process, as long as there is pressure to force outflow of lubrication oil in cavity, thus cause lubricant oil in inflow engine very few, and then it is poor to make the lubrication effect of component in coupled engines, reduce the working life of motor.

In addition, as shown in Figure 1, become displacement oil pump 101 be arranged on body lower end surface and immerse in oil sump 102.Oil sump 102 is component of motor bottommost, in design process, is subject to the impact of car load vehicle frame and ground Clearance, and the profile narrow limitation of oil sump 102 is larger.Like this, if change displacement oil pump 101 assembles the fuel filter 103 installed down just likely can exceed oil sump 102, cannot assemble.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of to engine lubrication better effects if, and can the oil pump of increasing service life of engine.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is:

A kind of oil pump comprises:

The pump housing;

External rotor, it is rotatably installed in the described pump housing;

Transmission shaft, its one end is set with internal rotor, and it is interior and coaxial with this external rotor that this internal rotor is installed on described external rotor, forms cavity volume between described external rotor and described internal rotor;

The other end of described transmission shaft is fixedly connected with sprocket wheel through end cap, and this sprocket wheel is concentric with described transmission shaft;

Described end cap buckle closure is on the described pump housing, and described external rotor and described internal rotor are placed between the described pump housing and described end cap;

The described pump housing offers at least one inlet port and oil outlet, described oil outlet is provided with Decompression valves.

Preferably, described Decompression valves is Spring-Loaded Pressure Relief Valve.

Preferably, connected by flat key between described internal rotor and described transmission shaft.

Preferably, interference fit between described internal rotor and described transmission shaft.

Preferably, connected by flat key between described sprocket wheel and described transmission shaft.

Preferably, interference fit between described sprocket wheel and described transmission shaft.

Preferably, described end cap is fixedly connected with the described pump housing by bolt.

Preferably, the outside buckle closure of described sprocket wheel has sprocket wheel guard shield, and this sprocket wheel guard shield is packed on described end cap.

Preferably, described sprocket wheel guard shield is fixedly connected with described end cap by bolt.

Preferably, described inlet port is two, these two described inlet ports are all positioned at the downside of the described pump housing, the opening direction of inlet port described in one of them and the parallel to an axis of described transmission shaft this transmission shaft dorsad, the axial vertical also described pump housing dorsad of the opening direction of inlet port described in another and described transmission shaft.

A kind of oil pump provided by the present invention, engine crankshaft is by Chain conveyer band movable sprocket, sprocket wheel drives internal rotor by transmission shaft, internal rotor drives external rotor, thus the inlet port of lubricant oil from the pump housing is sucked, after the oil pressure of the lubricant oil sucked reaches certain pressure, backed down by the Decompression valves on oil outlet just now, lubricant oil extrudes from oil outlet.After the oil outlet of the pump housing installs Decompression valves additional, after only having the cavity volume formed when internal rotor and external rotor to reach certain pressure, Decompression valves could back down by lubricant oil, thus backflow, thus, just can the capacity of reflux of less lubricant oil, make lubricant oil as much as possible be used to lubricate the component in motor, and then significantly can promote lubrication effect, extend the working life of motor.

Accompanying drawing explanation

Fig. 1 is existing oil pump using state figure;

The explosive view of the oil pump that Fig. 2 provides for the embodiment of the present invention;

First using state figure of the oil pump that Fig. 3 provides for the embodiment of the present invention;

Second using state figure of the oil pump that Fig. 4 provides for the embodiment of the present invention;

3rd using state figure of the oil pump that Fig. 5 provides for the embodiment of the present invention;

In Fig. 1, reference character is: 101 become displacement oil pump, 102 oil sumps, 103 oil sumps.

In Fig. 2 to Fig. 5, reference character is: 1 pump housing, 2 external rotors, 3 transmission shafts, 4 internal rotors, 5 end caps, 6 sprocket wheels, 7 Decompression valvess, 8 sprocket wheel guard shields, 9 fuel filters, 10 oil sumps, 11 inlet ports.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:

As shown in Figure 2, a kind of oil pump comprises the pump housing 1, external rotor 2, transmission shaft 3, internal rotor 4, end cap 5, sprocket wheel 6.Wherein, external rotor 2 is rotatably installed in the pump housing 1, and one end of transmission shaft 3 is set with internal rotor 4, is connected between internal rotor 4 and transmission shaft 3 by flat key.Flat key is used for connecting parts on shaft and playing circumferential fixation to them, to reach a kind of mechanical parts of transmitting torque, tighter key is adopted to connect in the present embodiment, interference fit between internal rotor 4 and transmission shaft 3 for this reason, thus ensure that the stable connection between internal rotor 4 and transmission shaft 3, also prevent from relatively rotating between internal rotor 4 and transmission shaft 3.It is interior and coaxial with this external rotor 2 that this internal rotor 4 is installed on external rotor 2, forms cavity volume between external rotor 2 and internal rotor 4.The other end of transmission shaft 3 is fixedly connected with sprocket wheel 6 through end cap 5, and the same reason, is connected by flat key between sprocket wheel 6 and transmission shaft 3, interference fit between sprocket wheel 6 and transmission shaft 3, and this sprocket wheel 6 is concentric with transmission shaft 3.Between internal rotor 4 and transmission shaft 3 and between sprocket wheel 6 and transmission shaft 3 except adopting flat key and connecting, also spline joint can be adopted.End cap 5 buckle closure is on the pump housing 1, and for the ease of dismounting, so end cap 5 is fixedly connected with the pump housing 1 by bolt, external rotor 2 and internal rotor 4 are placed between the pump housing 1 and end cap 5.In order to play a protective role to sprocket wheel 6, so the outside buckle closure of sprocket wheel 6 has sprocket wheel guard shield 8, this sprocket wheel guard shield 8 is packed on end cap 5.Also for ease of and be convenient to dismounting, sprocket wheel guard shield 8 is fixedly connected with end cap 5 by bolt.The pump housing 1 offers at least one inlet port 11 and oil outlet, oil outlet is provided with Decompression valves 7.

Engine crankshaft is by Chain conveyer band movable sprocket 6, sprocket wheel 6 drives internal rotor 4 by transmission shaft 3, internal rotor 4 drives external rotor 2, thus the inlet port 11 of lubricant oil from the pump housing 1 is sucked, after the oil pressure of the lubricant oil sucked reaches certain pressure, backed down by Decompression valves 7 on oil outlet just now, lubricant oil extrudes from oil outlet.After the oil outlet of the pump housing 1 installs Decompression valves 7 additional, after only having the cavity volume formed when internal rotor 4 and external rotor 2 to reach certain pressure, Decompression valves 7 could back down by lubricant oil, thus backflow, thus, just can the capacity of reflux of less lubricant oil, make lubricant oil as much as possible be used to lubricate the component in motor, and then significantly can promote lubrication effect, extend the working life of motor.As shown in Figure 2, Decompression valves 7 preferably Spring-Loaded Pressure Relief Valve in the present embodiment, Spring-Loaded Pressure Relief Valve structure is simple, is convenient to dismounting and action is very sensitive, also can select plunger type Decompression valves in addition.

In the present embodiment, as shown in Figure 3 and Figure 4, for the ease of the installation of fuel filter 9, inlet port 11 is two, and these two inlet ports 11 are all positioned at the downside of the pump housing 1, the opening direction of one of them inlet port 11 and the parallel to an axis of transmission shaft 3 this transmission shaft 3 dorsad, as shown in Figure 4 and Figure 5, fuel filter 9 is just arranged on this inlet port 11, thus, fuel filter 9, just for install, can be placed in oil sump 10 backwards.The opening direction of another inlet port 11 with the axial vertical of the transmission shaft 3 and dorsad pump housing 1, as shown in Figure 3, fuel filter 9 is for install down.Multiple inlet port 11 can match fuel filter 9 mounting point according to different automobile types is set, improves the convenience of installation.

In sum, content of the present invention is not limited in the above-described embodiments, and those skilled in the art can propose other mode of execution easily according to guiding theory of the present invention, and these mode of executions all comprise within the scope of the present invention.

Claims (10)

1. an oil pump, comprises the pump housing, it is characterized in that, this oil pump also comprises:
External rotor, it is rotatably installed in the described pump housing;
Transmission shaft, its one end is set with internal rotor, and it is interior and coaxial with this external rotor that this internal rotor is installed on described external rotor, forms cavity volume between described external rotor and described internal rotor;
The other end of described transmission shaft is fixedly connected with sprocket wheel through end cap, and this sprocket wheel is concentric with described transmission shaft;
Described end cap buckle closure is on the described pump housing, and described external rotor and described internal rotor are placed between the described pump housing and described end cap;
The described pump housing offers at least one inlet port and oil outlet, described oil outlet is provided with Decompression valves.
2. oil pump according to claim 1, is characterized in that: described Decompression valves is Spring-Loaded Pressure Relief Valve.
3. oil pump according to claim 1, is characterized in that: connected by flat key between described internal rotor and described transmission shaft.
4. oil pump according to claim 3, is characterized in that: interference fit between described internal rotor and described transmission shaft.
5. oil pump according to claim 1, is characterized in that: connected by flat key between described sprocket wheel and described transmission shaft.
6. oil pump according to claim 5, is characterized in that: interference fit between described sprocket wheel and described transmission shaft.
7. oil pump according to claim 1, is characterized in that: described end cap is fixedly connected with the described pump housing by bolt.
8. oil pump according to claim 1, is characterized in that: the outside buckle closure of described sprocket wheel has sprocket wheel guard shield, and this sprocket wheel guard shield is packed on described end cap.
9. oil pump according to claim 8, is characterized in that: described sprocket wheel guard shield is fixedly connected with described end cap by bolt.
10. oil pump according to claim 1, it is characterized in that: described inlet port is two, these two described inlet ports are all positioned at the downside of the described pump housing, the opening direction of inlet port described in one of them and the parallel to an axis of described transmission shaft this transmission shaft dorsad, the axial vertical also described pump housing dorsad of the opening direction of inlet port described in another and described transmission shaft.
CN201510140764.5A 2015-03-27 2015-03-27 Oil pump CN104728586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510140764.5A CN104728586A (en) 2015-03-27 2015-03-27 Oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510140764.5A CN104728586A (en) 2015-03-27 2015-03-27 Oil pump

Publications (1)

Publication Number Publication Date
CN104728586A true CN104728586A (en) 2015-06-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510140764.5A CN104728586A (en) 2015-03-27 2015-03-27 Oil pump

Country Status (1)

Country Link
CN (1) CN104728586A (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004183650A (en) * 2002-11-19 2004-07-02 Mitsubishi Materials Corp Inscribed oil pump rotor
JP2008157210A (en) * 2006-12-26 2008-07-10 Yamada Seisakusho Co Ltd Inner rotor of oil pump
CN201554566U (en) * 2009-11-03 2010-08-18 昆明云内动力股份有限公司 Engine cylinder body of integrated oil pump casing
CN102052120A (en) * 2010-11-27 2011-05-11 奇瑞汽车股份有限公司 Engine oil pump
CN102095069A (en) * 2010-11-13 2011-06-15 湖南机油泵股份有限公司 Oil pump with safety regulation integrated valve
CN202125717U (en) * 2011-06-21 2012-01-25 湖南机油泵股份有限公司 NSE type rotor oil pump
CN202510183U (en) * 2012-01-17 2012-10-31 北京福田康明斯发动机有限公司 Integrated oil pan, engine lubricating system, engine and vehicle
CN202992598U (en) * 2012-12-06 2013-06-12 湖南机油泵股份有限公司 Oil pump with built-in chain tightener mounting hole
CN103306799A (en) * 2013-06-26 2013-09-18 长城汽车股份有限公司 Pump in engine
CN203515724U (en) * 2013-09-24 2014-04-02 潍柴动力股份有限公司 Engine oil pump suction filter
CN203604007U (en) * 2013-09-16 2014-05-21 安徽华菱汽车有限公司 Heavy-duty vehicle and lubricating oil system thereof
CN203717063U (en) * 2014-03-13 2014-07-16 安徽江淮汽车股份有限公司 Engine oil pump

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004183650A (en) * 2002-11-19 2004-07-02 Mitsubishi Materials Corp Inscribed oil pump rotor
JP2008157210A (en) * 2006-12-26 2008-07-10 Yamada Seisakusho Co Ltd Inner rotor of oil pump
CN201554566U (en) * 2009-11-03 2010-08-18 昆明云内动力股份有限公司 Engine cylinder body of integrated oil pump casing
CN102095069A (en) * 2010-11-13 2011-06-15 湖南机油泵股份有限公司 Oil pump with safety regulation integrated valve
CN102052120A (en) * 2010-11-27 2011-05-11 奇瑞汽车股份有限公司 Engine oil pump
CN202125717U (en) * 2011-06-21 2012-01-25 湖南机油泵股份有限公司 NSE type rotor oil pump
CN202510183U (en) * 2012-01-17 2012-10-31 北京福田康明斯发动机有限公司 Integrated oil pan, engine lubricating system, engine and vehicle
CN202992598U (en) * 2012-12-06 2013-06-12 湖南机油泵股份有限公司 Oil pump with built-in chain tightener mounting hole
CN103306799A (en) * 2013-06-26 2013-09-18 长城汽车股份有限公司 Pump in engine
CN203604007U (en) * 2013-09-16 2014-05-21 安徽华菱汽车有限公司 Heavy-duty vehicle and lubricating oil system thereof
CN203515724U (en) * 2013-09-24 2014-04-02 潍柴动力股份有限公司 Engine oil pump suction filter
CN203717063U (en) * 2014-03-13 2014-07-16 安徽江淮汽车股份有限公司 Engine oil pump

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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669

Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd

Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669

Applicant before: Anhui Jianghuai Automotive Co., Ltd.

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Application publication date: 20150624

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