CN208184876U - A kind of oil return of oil injector device - Google Patents

Abstract

The utility model provides a kind of oil return of oil injector device, including the first communicating pipe for being connected to fuel injector, the second communicating pipe for oil return, for being connected to the third connecting pipe of injection pump, first connector and the second connector, first connector is three-way connection, and first connector be connected to respectively with corresponding first communicating pipe and two neighboring second communicating pipe, second connector is two-way joint, and second connector be connected to respectively with corresponding first communicating pipe and the second communicating pipe, set gradually for the first communicating pipe according to the flow direction of excess fuel, first connector or the second connector, second communicating pipe and third connecting pipe, in oil return of oil injector device provided by the utility model, stable connection between communicating pipe and between communicating pipe and connector, prevent the oil leakage phenomenon generated when relative displacement, and improve communicating pipe and connector Oil resistivity and corrosion resistance, prevent aging from aggravating, and improve service life.

Description

A kind of oil return of oil injector device

Technical field

The utility model belongs to auto parts field, more particularly to a kind of oil return of oil injector device.

Background technique

In the operational process of engine, the oil return pipe that excess fuel generally passes through engine fuel injector returns to injection pump Low pressure oil way, oil return pipe is generally adopted by plug-in type design, and oil return pipe generally uses nylon material, however nylon material phase To harder, be unfavorable for center away from adjusting, it is not only difficult to install, and be easy to cause the inclination of oil return pipe and connector, Jin Erjia The damage of acute joints wear and sealing ring.

The connector of plug-in type oil return pipe generally uses fiber nylon material injection molding, and intensity, which is difficult to meet design, to be wanted It asks, and as aging aggravates, the strength of joint of oil return pipe is further decreased, misoperation may occur during the installation process and lead The risk of fracture is caused, and assembly technology is complicated, personnel training period and cost are larger, the jump-ring slot of plug-in type oil returning pipe joint It is generally designed using rectangular configuration, firm locking relationship can not be formed, be easy to produce rotation or pull-off phenomenon, and then cause to fire The case where oil leaks.

Utility model content

In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of oil return of oil injector dresses It sets, for solving the problems, such as that oil return pipe in the prior art and connector are also easy to produce relative displacement and assembly technology is complicated.

In order to achieve the above objects and other related objects, the utility model provides a kind of oil return of oil injector device, is used for N cylinder In engine, and excess fuel is guided in injection pump by fuel injector, N >=2 and N are positive integer, the oil return of oil injector dress It sets including the first communicating pipe for being connected to fuel injector, the third company for the second communicating pipe of oil return, for being connected to injection pump Siphunculus, the first connector and the second connector, first connector is three-way connection, and the first connector connects with corresponding first respectively Siphunculus and the connection of two neighboring second communicating pipe, second connector are two-way joint, and the second connector is respectively with corresponding the A connecting pipe and the connection of the second communicating pipe set gradually the first communicating pipe, the first connector or the according to the flow direction of excess fuel Two connectors, the second communicating pipe and third connecting pipe；Wherein, the quantity of the first communicating pipe and the second communicating pipe are N number of, the first connector Quantity be that (N-1) is a, the quantity of the second connector is 1.

Optionally, the second communicating pipe close to the injection pump side is L shape.

Optionally, close to the injection pump side the second communicating pipe be equipped with first support for fixing, described second Communicating pipe is fixedly connected by the first support with engine.

Optionally, far from the injection pump side the second communicating pipe be equipped with second support for fixing, described second Communicating pipe is fixedly connected by the second support with engine.

Optionally, first communicating pipe is connect with the first connector or the second connector by clearance fit.

Optionally, second communicating pipe and the first connector or the second connector pass through welded connecting.

Optionally, the third connecting pipe is connect with the second communicating pipe by clearance fit.

Optionally, first communicating pipe and the third connecting pipe are made of hydrogenated nitrile-butadiene rubber.

Optionally, first connector and second connector are made of Q235AF.

Optionally, second communicating pipe is made of BHG2.

As described above, the oil return of oil injector device of the utility model, has the advantages that

1, the stable connection between communicating pipe and between communicating pipe and connector prevents the leakage generated when relative displacement Oily phenomenon；

2, can be fixed on the engine by the oil return of oil injector device, the spray for preventing engine luggine or disturbance from generating Oil return line relative displacement, and then prevent oil leak；

3, first communicating pipe and the third connecting pipe are made of hydrogenated nitrile-butadiene rubber, first connector and described Second connector is made of Q235AF, and second communicating pipe is made of BHG2, effectively increases the oil resistant of communicating pipe and connector Property and corrosion resistance, prevent aging from aggravating, improve service life.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of oil return of oil injector device in the utility model embodiment.

Fig. 2 is the assembling structure schematic diagram of oil return of oil injector device in the utility model embodiment.

Piece mark explanation

1 first communicating pipe

10 first connectors

11 fuel injectors

2 second communicating pipes

20 second connectors

21 close to injection pump side the second communicating pipe

22 injection pumps

3 third connecting pipes

31 first supports

32 second supports

4 engines

Specific embodiment

The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages and effect of the utility model easily.

Fig. 1 is please referred to Fig. 2.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to Cooperate the revealed content of specification, so that those skilled in the art understands and reads, is not intended to limit the utility model Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model Revealed technology contents obtain in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", " left side ", The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model Scope.

In order to describe the utility model in detail, firstly, next to a kind of oil return of oil injector of the utility model Device illustrates:

Fig. 1 and Fig. 2 are please referred to, the utility model provides a kind of oil return of oil injector device, is used in N Cylinder engine, and will Excess fuel is guided in injection pump 22 by fuel injector 11, and N >=2 and N are positive integer, and the oil return of oil injector device includes being used for It is connected to the first communicating pipe 1, the second communicating pipe 2 for oil return, the third connecting pipe for being connected to injection pump 22 of fuel injector 11 3, the first connector 10 and the second connector 20, first connector 10 be three-way connection, and the first connector 10 respectively with it is corresponding First communicating pipe 1 and the connection of two neighboring second communicating pipe 2, second connector 20 is two-way joint, and the second connector 20 divides Be not connected to corresponding first communicating pipe 1 and the second communicating pipe 2, according to the flow direction of excess fuel set gradually the first communicating pipe 1, First connector 10 or the second connector 20, the second communicating pipe 2 and third connecting pipe 3；Wherein, the first communicating pipe 1 was connected to second The quantity of pipe 2 be it is N number of, the quantity of the first connector 10 is N-1, and the quantity of the second connector 20 is 1, and the present embodiment is sent out with four cylinders For motivation for example, the quantity of the first communicating pipe 1 and the second communicating pipe 2 are 4, the quantity of the first connector 10 is 3, second The quantity of connector 20 is 1；Stable connection between oil return of oil injector device all parts provided by the utility model, not only effectively Oil leak is avoided, and structure is simple, convenient for assembly.

Preferably, the second communicating pipe 21 close to injection pump side is L shape, and the second connection close to injection pump side Pipe 21 is equipped with first support 31 for fixing, the second communicating pipe 21 passes through the first support 31 close to injection pump side It is fixedly connected with engine 4；The second communicating pipe 2 far from the injection pump side is equipped with second support 32 for fixing, institute It states and was fixedly connected by the second support 32 with engine 4 the second communicating pipe 2, pass through setting first support 31 and second support 32, oil return of oil injector device can be stabilized on engine 4, slow down in the operation of engine 4 vibration that generates and thus The relative displacement for causing oil return of oil injector device all parts to generate avoids oil return of oil injector device and generates oil leakage phenomenon.

Specifically, the first communicating pipe 1 was made of rubber, first communicating pipe 1 and the first connector 10 or the second connector 20 are connected by clearance fit, and more specifically, the diameter of the first communicating pipe 1 is less than the first connector 10 or the second connector 20 First communicating pipe 1 was inserted into the interface of the first connector 10 or the second connector 20 by interface diameter；

Second communicating pipe 2 was made of metal, and second communicating pipe 2 and the first connector 10 or the second connector 20 pass through weldering It connects in succession, more specifically, the diameter of the second communicating pipe 2 is less than the first connector 10 or the interface diameter of the second connector 20, first Second connecting tube 2 is inserted into the interface of the first connector 10 or the second connector 20, is then welded and fixed；

Third connecting pipe 3 is made of rubber, and the third connecting pipe 3 is connect with the second communicating pipe 2 by clearance fit, more Specifically, the diameter of third connecting pipe 3 is greater than the diameter of the second communicating pipe 2, the second communicating pipe 2 was inserted into third connecting pipe 3 In.

Detailed, first communicating pipe 1 and the third connecting pipe 3 are made of hydrogenated nitrile-butadiene rubber, and described first connects First 10 and second connector 20 be made of Q235AF, second communicating pipe 2 is made of BHG2, using this programme, Neng Gouyou Effect improves the oil resistivity and corrosion resistance of communicating pipe and connector, prevents aging from aggravating, improves service life.

The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.

Claims (10)

1. a kind of oil return of oil injector device is used in N Cylinder engine, and excess fuel is guided in injection pump by fuel injector, N >=2 and N is positive integer, it is characterised in that: the oil return of oil injector device includes for being connected to the first communicating pipe of fuel injector, using In the second communicating pipe of oil return, the third connecting pipe for being connected to injection pump, the first connector and the second connector, described first is connect Head is three-way connection, and the first connector is connected to corresponding first communicating pipe and two neighboring second communicating pipe respectively, described the Two connectors are two-way joint, and the second connector is connected to corresponding first communicating pipe and the second communicating pipe respectively, according to extra combustion The flow direction of oil sets gradually the first communicating pipe, the first connector or the second connector, the second communicating pipe and third connecting pipe；Wherein, The quantity of first communicating pipe and the second communicating pipe be it is N number of, the quantity of the first connector is N-1, and the quantity of the second connector is 1.

2. oil return of oil injector device according to claim 1, it is characterised in that: second close to the injection pump side connects Siphunculus is L shape.

3. oil return of oil injector device according to claim 2, it is characterised in that: second close to the injection pump side connects Siphunculus is equipped with first support for fixing, is fixedly connected by the first support with engine second communicating pipe.

4. oil return of oil injector device according to claim 1, it is characterised in that: second far from the injection pump side connects Siphunculus is equipped with second support for fixing, is fixedly connected by the second support with engine second communicating pipe.

5. oil return of oil injector device according to claim 1, it is characterised in that: first communicating pipe and the first connector or The second connector of person is connected by clearance fit.

6. oil return of oil injector device according to claim 1, it is characterised in that: second communicating pipe and the first connector or The second connector of person passes through welded connecting.

7. oil return of oil injector device according to claim 1, it is characterised in that: the third connecting pipe and the second communicating pipe It is connected by clearance fit.

8. oil return of oil injector device according to claim 1, it is characterised in that: first communicating pipe and the third connect Siphunculus is made of hydrogenated nitrile-butadiene rubber.

9. oil return of oil injector device according to claim 1, it is characterised in that: first connector and second connector It is made of Q235AF.

10. oil return of oil injector device according to claim 1, it is characterised in that: second communicating pipe is made of BHG2.