阅读说明：本技术 一种进油阀、高压油泵及发动机 (A kind of inlet valve, high-pressure oil pump and engine ) 是由 唐继响 顾坚 庄凤芝 苏晓东 王红磊 于 2019-08-06 设计创作，主要内容包括：本发明涉及发动机技术领域,公开了一种进油阀,包括阀体、下阀座和阀芯,阀体上设置有第一储油腔,下阀座上设置有进油油道,阀芯包括第一密封部,进油油道包括相连通的第一通道、第二通道、第三通道和第四通道。其中,第一通道为与油泵相连通；第二通道的第一端与第一通道相连通,第一密封部容置在第三通道内且能够沿第三通道的延伸方向移动以堵塞或远离第二通道的第二端；第四通道的第一端与第二通道相连通,其第二端与第一储油腔相连通。本发明提供的进油阀,通过在进油油道中增设第四通道,能够增加进油面积,减小阀芯所受到的作用力,延长阀芯使用寿命,且能够提高进油阀进油能力,满足较高的燃油输送流量的要求。(The present invention relates to technical field of engines, disclose a kind of inlet valve, including valve body, lower valve base and spool, the first shoe cream room is provided on valve body, oil inlet oil duct is provided on lower valve base, spool includes the first sealing, and oil inlet oil duct includes the first passage being connected, second channel, third channel and fourth lane.Wherein, first passage is to be connected with oil pump；The first end of second channel is connected with first passage, and the first sealing is accommodated in third channel and can be moved along the extending direction of third channel with blocking or far from the second end of second channel；The first end of fourth lane is connected with second channel, and second end is connected with the first shoe cream room.Inlet valve provided by the invention can increase oil inlet area, reduce active force suffered by spool, extend spool service life, and can be improved inlet valve oil inlet ability, meet the requirement of higher fuel delivery flow volume by adding fourth lane in oil inlet oil duct.)

1. a kind of inlet valve, the inlet valve includes valve body (1), lower valve base (2) and spool (3), is provided on the valve body (1) First shoe cream room (11), oil inlet oil duct is provided on the lower valve base (2), and the spool (3) includes the first sealing (31), institute Stating the first sealing (31) can block or far from the oil inlet oil duct to realize closing or opening for inlet valve, and feature exists In the oil inlet oil duct includes:

First passage (21), is configured as being connected with oil pump；

The second channel (22) and third channel (23) being connected, the first end of the second channel (22) and the first passage (21) it is connected, first sealing (31) is accommodated in the third channel (23) and can be along the third channel (23) Extending direction it is mobile to block or the second end far from the second channel (22)；

Fourth lane (24), first end are connected with the second channel (22), second end and first shoe cream room (11) it is connected.

2. inlet valve according to claim 1, which is characterized in that further include the first elastic component (4), the spool (3) is also Including core (32), described first elastic component (4) one end is abutted against with the core (32), the other end and first sealing Portion (31) abuts against so that first sealing (31) is mobile to block or far along the extending direction of the third channel (23) Second end from the second channel (22).

3. inlet valve according to claim 2, which is characterized in that it further include upper valve base (5), upper valve base (5) setting It on the valve body (1), is provided with the second shoe cream room (51) on the upper valve base (5), the spool (3) further includes the second sealing Portion (33), second sealing (33) is connected with the core (32) and is located in second shoe cream room (51), described Second sealing (33) can block or far from first shoe cream room (11) so that first shoe cream room (11) and described the Two shoe cream rooms (51) mutually obstruct or are connected.

4. inlet valve according to claim 3, which is characterized in that further include the second elastic component (6), second elastic component (6) in second shoe cream room (51), one end and the upper valve base (5) of second elastic component (6) are abutted against for setting, The other end and second sealing (33) abut against so that second sealing (33) blocking or separate first oil storage Chamber (11).

5. inlet valve according to claim 4, which is characterized in that second sealing (33) is with the core (32) Integrated formed structure, the core (32) are accommodated in first shoe cream room (11), and second sealing (33) can be with institute Valve body (1) is stated to abut against to block first shoe cream room (11).

6. inlet valve according to claim 1-5, which is characterized in that multiple fourth lanes (24) surround institute State the side setting of third channel (23).

7. inlet valve according to claim 1-5, which is characterized in that the extending direction of the fourth lane (24) It is parallel with the extending direction of the third channel (23), and the fourth lane (24) is connected with the third channel (23) It is logical.

8. a kind of high-pressure oil pump characterized by comprising

Plunger bushing (7) is provided with accommodating chamber (71) and oil inlet (72)；

Such as the described in any item inlet valves of claim 1-7, the inlet valve setting is in the accommodating chamber (71), the oil inlet The first passage (21) of valve is connected with the oil inlet (72).

9. high-pressure oil pump according to claim 8, which is characterized in that be provided with through-hole on the valve seat of the inlet valve (25), it is provided with plunger hole (73) on the plunger bushing (7), one end of the through-hole (25) and the first oil storage of the inlet valve Chamber (11) is connected, and the other end is connected with the plunger hole (73).

10. a kind of engine, which is characterized in that including high-pressure oil pump as claimed in claim 8 or 9.

Technical field

The present invention relates to technical field of engines more particularly to a kind of inlet valves, high-pressure oil pump and engine.

Background technique

The high-pressure oil pump of engine after fuel oil is pressurized to high pressure from low pressure for being transported in common rail pipe.High pressure oil at present The mode of plunger pump is widely used in pump.Plunger pump relies on reciprocating motion of the plunger in plunger bushing, makes the volume of pressurization working lumen Generating period changes to realize oil suction, pressure oil.Plunger pump high, compact-sized, high-efficient and flow adjusting side with rated pressure Just the advantages that.

Core component one of of the inlet valve as high-pressure oil pump, inlet valve includes spool and valve seat, passes through spool and valve seat Cooperation, under the action of plunger pump, the oil pressure in inlet valve can change, to keep spool mobile relative to valve seat To realize the opening and closing of inlet valve.Since spool is larger by the active force of oil pressure, when inlet valve is closed, the fortune of spool Dynamic momentum is larger, is easy to collide with valve seat to damage.In addition, current inlet valve limits the fuel feeding effect of high-pressure oil pump Rate is unable to satisfy the requirement of the higher fuel delivery flow volume of big-block engine.

It would therefore be highly desirable to need a kind of inlet valve to solve the above problems.

Summary of the invention

The first purpose of this invention is to provide a kind of inlet valve, reduces active force suffered by spool, extend spool Service life, and can be improved oil inlet ability, meet the requirement of higher fuel delivery flow volume.

Second object of the present invention is to provide a kind of high-pressure oil pump, by applying above-mentioned inlet valve, can be improved into Oily ability meets the requirement of higher fuel delivery flow volume.

Third object of the present invention is to provide a kind of engine, by applying above-mentioned high-pressure oil pump, can be improved into Oily ability meets the requirement of higher fuel delivery flow volume.

To achieve the above object, the following technical schemes are provided:

A kind of inlet valve, the inlet valve include valve body, lower valve base and spool, and the first oil storage is provided on the valve body Chamber, is provided with oil inlet oil duct on the lower valve base, and the spool includes the first sealing, first sealing can block or Far from the oil inlet oil duct to realize closing or opening for inlet valve, the oil inlet oil duct includes:

First passage is configured as being connected with oil pump；

The second channel and third channel being connected, the first end of the second channel are connected with the first passage, First sealing be accommodated in the third channel and can be moved along the extending direction of the third channel to block or Second end far from the second channel；

Fourth lane, first end are connected with the second channel, and second end is connected with first shoe cream room.

Further, further include the first elastic component, the spool further includes core, first elastic component one end with it is described Core abuts against, and the other end is abutted against with first sealing so that the first sealing prolonging along the third channel It is mobile to block or the second end far from the second channel to stretch direction.

It further, further include upper valve base, the upper valve base is arranged on the valve body, and the is provided on the upper valve base Two shoe cream rooms, the spool further include the second sealing, and second sealing is connected with the core and is located at described the In two shoe cream rooms, second sealing can block or far from first shoe cream room so that first shoe cream room with it is described Second shoe cream room mutually obstructs or is connected.

It further, further include the second elastic component, second elastic component is arranged in second shoe cream room, and described the One end of two elastic components is abutted against with the upper valve base, and the other end is abutted against with second sealing so that described second is close The blocking of envelope portion or separate first shoe cream room.

Further, second sealing is an integral molding structure with the core, and the core is accommodated in described One shoe cream room, second sealing can be abutted against with the valve body to block first shoe cream room.

Further, multiple fourth lanes are arranged around the side of the third channel.

Further, the extending direction of the fourth lane is parallel with the extending direction of the third channel, and described Fourth lane is connected with the third channel.

A kind of high-pressure oil pump, comprising:

Plunger bushing is provided with accommodating chamber and oil inlet；

Inlet valve as described above, the inlet valve are arranged in the accommodating chamber, the first passage of the inlet valve with The oil inlet is connected.

Further, it is provided with through-hole on the valve seat of the inlet valve, plunger hole is provided on the plunger bushing, it is described logical The one end in hole is connected with the first shoe cream room of the inlet valve, and the other end is connected with the plunger hole.

A kind of engine, including high-pressure oil pump as described above.

Compared with prior art, the invention has the benefit that

Inlet valve provided by the invention, including valve body, lower valve base and spool are provided with the first shoe cream room, lower valve on valve body Be provided with oil inlet oil duct on seat, spool includes the first sealing, oil inlet oil duct include the first passage being connected, second channel, Third channel and fourth lane, wherein first passage is to be connected with oil pump；The first end of second channel is connected with first passage Logical, the first sealing is accommodated in third channel and can be moved along the extending direction of third channel to block or lead to far from second The second end in road；The first end of fourth lane is connected with second channel, and second end is connected with the first shoe cream room.The present invention The inlet valve of offer, by adding fourth lane in oil inlet oil duct, the both ends of fourth lane respectively with second channel and first Shoe cream room is connected, and can increase oil inlet area, reduces active force suffered by spool, extends spool service life, and can Inlet valve oil inlet ability is improved, the requirement of higher fuel delivery flow volume is met.

High-pressure oil pump provided by the invention can be improved oil inlet ability, meet higher combustion by applying above-mentioned inlet valve The requirement of oily feed flow.

Engine provided by the invention can be improved oil inlet ability, meet higher combustion by applying above-mentioned high-pressure oil pump The requirement of oily feed flow.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without creative efforts, can also implement according to the present invention The content of example and these attached drawings obtain other attached drawings.

Fig. 1 is the cross-sectional view after valve body provided by the invention, lower valve base and spool assembly；

Fig. 2 is the structural schematic diagram of valve body provided by the invention；

Fig. 3 is the structural schematic diagram of lower valve base provided by the invention；

Fig. 4 is the cross-sectional view of lower valve base provided by the invention；

Fig. 5 is that inlet valve provided by the invention and plunger bushing assemble the cross-sectional view under the latter state；

Fig. 6 is the enlarged drawing in Fig. 5 at A；

Fig. 7 is the cross-sectional view in Fig. 5 at M-M；

Fig. 8 is inlet valve provided by the invention and the cross-sectional view under another state after plunger bushing assembly；

Fig. 9 is the enlarged drawing in Fig. 8 at B；

Figure 10 is the cross-sectional view in Fig. 8 at N-N.

Appended drawing reference:

1- valve body；The first shoe cream room of 11-；

2- lower valve base；21- first passage；22- second channel；23- third channel；24- fourth lane；25- through-hole；

3- spool；The first sealing of 31-；32- core；The second sealing of 33-；

The first elastic component of 4-；

5- upper valve base；The second shoe cream room of 51-；

The second elastic component of 6-；

7- plunger bushing；71- accommodating chamber；72- oil inlet；73- plunger hole；

8- plunger.

Specific embodiment

In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing and by specific Embodiment to further illustrate the technical scheme of the present invention.

In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", "horizontal", The orientation or positional relationship of the instructions such as "inner", "outside" be based on the orientation or positional relationship shown in the drawings or this product use When the orientation or positional relationship usually put, be merely for convenience of the description present invention, rather than the device of indication or suggestion meaning Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention. In addition, term " first ", " second " are used for description purposes only, or for distinguishing different structure or component, and should not be understood as Indication or suggestion relative importance.

As Figure 1-Figure 2, a kind of inlet valve, including valve body 1, lower valve base 2 and spool 3, valve body 1 are present embodiments provided On be provided with the first shoe cream room 11, be provided with oil inlet oil duct on lower valve base 2, spool 3 includes the first sealing 31, the first sealing 31 can block or far from oil inlet oil duct to realize closing or opening for inlet valve.

As Figure 3-Figure 4, further, oil inlet oil duct includes the first passage 21 being connected, second channel 22, third Channel 23 and fourth lane 24, wherein first passage 21 is to be connected with oil pump；The first end and first passage of second channel 22 21 are connected, and the first sealing 31 is accommodated in third channel 23 and can be moved along the extending direction of third channel 23 to block Or the second end far from second channel 22；The first end of fourth lane 24 is connected with second channel 22, second end and first Shoe cream room 11 is connected.Inlet valve provided in this embodiment, by adding fourth lane 24 in oil inlet oil duct, can increase into Pasta product, reduces active force suffered by the first sealing 31, extends 3 service life of spool, and can be improved inlet valve oil inlet Ability meets the requirement of higher fuel delivery flow volume.

Optionally, valve body 1 and lower valve base 2 are that split type structure, valve body 1 and lower valve base 2 pass through positioning pin connection.

Preferably, when the first sealing 31 is spherical, the cross-sectional shape of third channel 23 is circle, third channel 23 Diameter be merely able to the first sealing 31 slightly larger than the diameter of the first sealing 31 to limit to the first sealing 31 It is vertically moving.

Optionally, multiple fourth lanes 24 are arranged around the side of third channel 23, to improve the oil inlet ability of inlet valve, Reduce oil pressure to the impact force of the first sealing 31 simultaneously.Preferably, in the present embodiment, the quantity of fourth lane 24 is two A, two fourth lanes 24 are symmetricly set on the two sides of third channel 23.

Optionally, the extending direction of extending direction with third channel 23 of fourth lane 24 is parallel, and fourth lane 24 It is connected with third channel 23.Preferably, fourth lane 24 is connected to completely in a lateral direction with third channel 23.

Illustratively, the first sealing 31 is steel ball, and the shape of fourth lane 24 is half elliptic, fourth lane 24 it is short Diameter is less than the diameter of the first sealing 31, and third channel 23 is circle, and fourth lane 24 and third channel 23 are in transverse direction Upper connection completely, is on the one hand convenient for the processing of third channel 23 and fourth lane 24, on the other hand, improves oil in fourth lane 24 Interior flow velocity improves oil inlet ability.In other embodiments, the shape of fourth lane 24 can also be semicircle, rectangular, triangle Shape etc., as long as guaranteeing that the first sealing 31 is only capable of moving up and down in third channel 23.

Preferably, as shown in Figure 5-Figure 7, which further includes the first elastic component 4, and spool 3 further includes core 32, and first 4 one end of elastic component is abutted against with core 32, the other end and the first sealing 31 abuts against so that the first sealing 31 is along third The extending direction in channel 23 is mobile to block or the second end far from second channel 22.

Specifically, as shown in Figure 5-Figure 7, straight arrows indicate the dynamic direction of oil stream in figure, when first passage 21 and the When oil pressure in two channels 22 is greater than the oil pressure in the first shoe cream room 11, the first elastic component 4 of compression makes the first sealing 31 in oil Extending direction under the action of pressure along third channel 23 moves upwards, thus far from second channel 22, allows oil to enter the In one shoe cream room 11.When the oil pressure in first passage 21 and second channel 22 is less than oil pressure in the first shoe cream room 11, first Elastic component 4 resets and transports extending direction of first sealing 31 under the action of the first elastic component 4 along third channel 23 downwards It is dynamic, so that second channel 22 is blocked, so that oil can not enter in the first shoe cream room 11.

Optionally, the first sealing 31 is steel ball, and the second end of second channel 22 is bellmouth, when steel ball moves downward When, steel ball can block the bellmouth of second channel 22, and when steel ball moves upwards, the oil in second channel 22 is able to enter Triple channel 23 and fourth lane 24.In other embodiments, the first sealing 31 can also be hemispherical, taper, as long as can Closing and opening to second channel 22 are realized in second end cooperation with second channel 22, and this is not restricted.

Preferably, the guide channel that Open Side Down is provided on core 32, the first elastic component 4 is arranged in guide channel, It is abutted against at the top of one end of first elastic component 4 and guide channel, the other end is abutted against with the first sealing 31, is made first close The up and down motion in envelope portion 31 is more steady.

Optionally, the first sealing 31 and core 32 are an integral molding structure, specifically, core 32 be it is cylindric, the One sealing 31 is semi-spherical shape, and the lower end of core 32 is arranged in the first sealing 31.

Preferably, as Figure 8-Figure 10, which further includes upper valve base 5, and upper valve base 5 is arranged on valve body 1, upper valve Be provided with the second shoe cream room 51 on seat 5, spool 3 further includes the second sealing 33, the second sealing 33 be connected with core 32 and In the second shoe cream room 51, the second sealing 33 can be blocked or far from the first shoe cream room 11 so that the first shoe cream room 11 and the Two shoe cream rooms, 51 phase obstructs or is connected.Specifically, the second sealing 33 is far from valve when the second sealing 33 moves upwards Body 1, the first shoe cream room 11 is connected with the second shoe cream room 51 at this time；When the second sealing 33 moves downward, the second sealing 33 the first shoe cream rooms 11 of blocking, the first shoe cream room 11 are not connected to the second shoe cream room 51.

Further, which further includes the second elastic component 6, and the second elastic component 6 is arranged in the second shoe cream room 51, the One end of two elastic components 6 is abutted against with upper valve base 5, and the other end and the second sealing 33 abut against so that the second sealing 33 is stifled Plug or separate first shoe cream room 11.

Specifically, as Figure 8-Figure 10, straight arrows indicate the dynamic direction of oil stream in figure, when in the first shoe cream room 11 Oil pressure be greater than the second shoe cream room 51 in oil pressure when, compression the second elastic component 6 make the second sealing 33 under the action of oil pressure It moves upwards far from valve body 1, so that the oil in the first shoe cream room 11 be made to enter the second shoe cream room 51.When in the first shoe cream room 11 When oil pressure is less than oil pressure in the second shoe cream room 51, the reset of the second elastic component 6 makes the second sealing 33 in the work of the second elastic component 6 The first shoe cream room 11 of blocking is moved downward under, so that the first shoe cream room 11 be made mutually to obstruct with the second shoe cream room 51.

Preferably, the second sealing 33 is an integral molding structure with core 32, and core 32 is accommodated in the first shoe cream room 11, the Two sealings 33 can be abutted against with valve body 1 to block the first shoe cream room 11.

Further, the second sealing 33 includes sealed end for sealing the first shoe cream room 11 and for positioning the second bullet Property part 6 guide end, the diameter of sealed end is greater than the diameter of guide end, and the second elastic component 6 is set on guide end, and with sealing End abuts against.

Optionally, the sealed end of the second sealing 33 is cone, and the exit of the first shoe cream room 11 is bellmouth, second The cone sealed end of sealing 33 can be abutted against with the conical outlet of the first shoe cream room 11 to block the first shoe cream room 11.

Illustratively, the first elastic component 4 and the second elastic component 6 are spring.

The present embodiment additionally provides a kind of high-pressure oil pump, including plunger bushing 7 and above-mentioned inlet valve, is arranged on plunger bushing 7 There are accommodating chamber 71 and oil inlet 72；Inlet valve is arranged in accommodating chamber 71, and the first passage 21 of inlet valve is connected with oil inlet 72 It is logical.High-pressure oil pump provided in this embodiment can be improved oil inlet ability, meet higher fuel oil by applying above-mentioned inlet valve The requirement of feed flow.

Further, in order to improve the oil inlet ability of inlet valve, through-hole 25, plunger bushing 7 are provided on the valve seat of inlet valve On be provided with plunger hole 73, one end of through-hole 25 is connected with the first shoe cream room 11 of inlet valve, the other end and plunger hole 73 It is connected.

Specifically, the high-pressure oil pump further includes plunger 8, plunger 8 is arranged in plunger hole 73, as shown in fig. 7, working as plunger 8 when moving downward, and can generate negative pressure in the first shoe cream room 11, so that oil be enable rapidly to enter first from oil inlet 72 Channel 21 and second channel 22, when the oil pressure in first passage 21 and second channel 22 be greater than the first shoe cream room 11 in oil pressure, To which the first elastic component 4 of compression makes the first sealing 31 far from second channel 22, oil enters the first shoe cream room from fourth lane 24 11 until the oil pressure in the first shoe cream room 11 is greater than oil pressure in first passage 21 so that the first sealing 31 be made to block second channel 22, stop oil inlet；As shown in Figure 10, when plunger 8 moves upwards, the first shoe cream room 11 can be compressed, in the first shoe cream room 11 Oil pressure be greater than the oil pressure in the second shoe cream room 51, the second elastic component 6 of compression moves upwards the second sealing 33 far from first Shoe cream room 11, so that the oil in the first shoe cream room 11 enters the second shoe cream room 51, until the oil pressure in the second shoe cream room 51 is greater than Oil pressure in first shoe cream room 11, the reset of the second elastic component 6 transport the second sealing 33 downwards under the action of the second elastic component 6 The first shoe cream room 11 of dynamic blocking, stops oil inlet.

The present embodiment additionally provides a kind of engine, by applying above-mentioned high-pressure oil pump, can be improved oil inlet ability, meets The requirement of higher fuel delivery flow volume.

In order to facilitate understanding, inlet valve working principle and the course of work provided in this embodiment are as follows:

First shoe cream room, 11 oil inlet stroke: the through-hole 25 on valve seat is connected with plunger hole 73 so that when plunger 8 to Lower movement generates negative pressure in the first shoe cream room 11, and the oil pressure in first passage 21 and second channel 22 is greater than the first shoe cream room 11 Interior oil pressure and the elastic force for being greater than the first elastic component 4, the first sealing 31 move upwards under the action of oil pressure, so that oil is logical It crosses fourth lane 24 and enters the first shoe cream room 11；When plunger 8 starts to move upwards, the first shoe cream room 11, the first oil storage are compressed When oil pressure in chamber 11 is greater than the oil pressure in first passage 21 and second channel 22, the first sealing 31 is in the first elastic component 4 Blocking second channel 22 is moved downward under effect, oil inlet stops, and 11 oil inlet of the first shoe cream room is completed.

Second oil suction chamber oil inlet stroke: plunger 8 continues up the first shoe cream room 11 of compression, when in the first shoe cream room 11 Oil pressure be greater than the second shoe cream room 51 in oil pressure and be greater than the second elastic component 6 elastic force when, the second sealing 33 is in oil pressure It is moved upwards under effect, so that oil enters the second shoe cream room 51；Oil pressure when plunger 8 moves downward, in the first shoe cream room 11 When less than oil pressure in the second shoe cream room 51, the second sealing 33 moves downward blocking first under the action of the second elastic component 6 Shoe cream room 11, stops oil inlet, and 51 oil inlet of the second shoe cream room is completed.

It is an inlet valve oil inlet that first shoe cream room 11 and the second shoe cream room 51, which complete oil inlet,.

Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that The present invention is not limited to specific embodiments mentioned here, be able to carry out for a person skilled in the art it is various it is apparent variation, It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.