CN206874334U

CN206874334U - Camshaft bearing lubricating structure, cylinder head lubricating system and engine

Info

Publication number: CN206874334U
Application number: CN201720796375.2U
Authority: CN
Inventors: 牟松; 程仕杰; 孔令华; 陈艺方
Original assignee: Chongqing Longxin Engine Co Ltd
Current assignee: Chongqing Longxin Engine Co Ltd
Priority date: 2017-07-03
Filing date: 2017-07-03
Publication date: 2018-01-12
Anticipated expiration: 2027-07-03

Abstract

The utility model discloses a kind of camshaft bearing lubricating structure, cylinder head lubricating system and engine, including；Wherein camshaft bearing lubricating structure includes being installed on first rolling bearing of camshaft one end and is arranged at the bearing chamber that cylinder head is used to install first rolling bearing, the bearing chamber connects with being arranged at the cylinder head oil duct of cylinder head, the outside of first rolling bearing, which is opened wide, makes the lubricating oil in cylinder head oil duct enter in the first rolling bearing, and the dust cap for stopping lubricating oil outflow is provided with the inside of first rolling bearing；By the setting of the bearing chamber connected with cylinder head oil duct, the space being directly entered beneficial to lubricating oil on the outside of the first rolling bearing between the outer ring of the first rolling bearing and inner ring, and then rolling element and retainer are sufficiently lubricated, avoid with grease sealing lubrication belt come the drawbacks of, avoid the abrasion of camshaft bearing ball and bearing ablation, ensure engine normal use, and it is simple in construction, and cost is cheap.

Description

Camshaft bearing lubricating structure, cylinder head lubricating system and engine

Technical field

It the utility model is related to engine lubrication field, and in particular to a kind of camshaft bearing lubricating structure, cylinder head lubrication System and engine.

Background technology

At work, the cylinder head of engine is provided with effective control that valve actuating mechanism realizes inlet valve and exhaust valve to engine System, and the interphase interaction of each moving parts of valve actuating mechanism, are acted on another part with certain power, and are occurred at a high speed Relative motion, have relative motion, piece surface must produce friction, accelerated wear test.Therefore, in order to mitigate abrasion, subtract Small frictional resistance, increases the service life, and must all have lubrication system on the cylinder head of engine, especially be disposed in cylinder head Camshaft bearing.Existing camshaft bearing typically uses rolling bearing, and both sides sealing and it is middle lubricating grease is set, but by Cause lubricating grease rotten in long-term use or volatilization causes to lubricate insufficient, cause camshaft bearing ball to wear, cause to start Machine abnormal sound and bearing ablation.

Therefore, to solve problem above, it is necessary to a kind of camshaft bearing lubricating structure, cylinder head lubricating system and engine, Effective sufficient lubrication can be carried out to camshaft bearing, avoid the abrasion of camshaft bearing ball and bearing ablation, ensure engine Normal use, and it is simple in construction, and cost is cheap.

Utility model content

In view of this, the purpose of this utility model is the defects of overcoming in the prior art, there is provided camshaft bearing lubricates structure Make, cylinder head lubricating system and engine, effective sufficient lubrication can be carried out to camshaft bearing, avoid camshaft bearing ball from grinding Damage and bearing ablation, ensure engine normal use.

Camshaft bearing lubricating structure of the present utility model, including be installed on first rolling bearing of camshaft one end and set It is placed in the bearing chamber that cylinder head is used to install first rolling bearing, the bearing chamber and the cylinder head oil duct for being arranged at cylinder head Connection, the outside of first rolling bearing, which is opened wide, makes the lubricating oil in cylinder head oil duct enter in the first rolling bearing, and described the The dust cap for stopping lubricating oil outflow is provided with the inside of one rolling bearing；Effective sufficient lubrication is carried out to camshaft bearing, kept away Exempt from the abrasion of camshaft bearing ball and bearing ablation, ensure engine normal use, and it is simple in construction, and cost is cheap；It is described First rolling bearing and dust cap are prior art, be will not be repeated here.

Further, the bearing chamber also includes adjacent to the shoe cream room on the outside of the first rolling bearing, the shoe cream room and cylinder Hair oil road connects；It is soaked in beneficial to the first rolling bearing under without operating mode in lubricating oil, ensures filling for the first rolling bearing Share in the benefit cunning.

Further, the camshaft is axially disposed the camshaft oil gallery connected with shoe cream room, camshaft oil gallery connection It is provided with camshaft nozzle opening；Pressure release can be achieved and beneficial to the pressure for reducing bearing chamber, avoid leaking, while make the profit of bearing chamber Lubricating oil flows and then circularly purifying lubricating oil, avoids impurity from accumulating.

Further, the second rolling bearing close to the camshaft other end, second rolling bearing two are installed in addition to Side is opened wide and lubricated by way of lubricating oil splash；The other end end set of the camshaft has a drive gear, and gas Cylinder head forms the bearing block for installing the second rolling bearing, and the second rolling bearing both sides are opened wide and pass through splash lubrication Mode lubricate, ensure the second rolling bearing lubrication it is abundant, avoid bearing ablation or produce abnormal sound.

Further, in addition to cylinder head cover and the cylinder head cover oil duct connected with cylinder head oil duct are arranged at, are set on the cylinder head cover It is equipped with the cylinder head cover nozzle opening that the rolling bearing of splash lubrication second is connected and be used for cylinder head cover oil duct；Pass through cylinder head cover nozzle opening Setting, beneficial to the second rolling bearing formed splash injection, ensure the second rolling bearing high lubricating effect.

Further, the injection direction of the cylinder head cover nozzle opening points to air inlet door rod, is ejected from cylinder head cover nozzle opening Lubricating oil acts on the rolling bearing of splash lubrication second after air inlet door rod；The injection direction of the cylinder head cover nozzle opening points to air inlet The junction of door rod and respective rocker arm, effectively lubricating inlet valve rocker screw and inlet valve, and lubricate valve after splashing and shake Arm and the second rolling bearing.

Further, the camshaft nozzle opening being radially arranged and radially spray lubricating oil along camshaft；It is described Camshaft nozzle opening is two and is respectively arranged at two axially distributed cams；The fuel-displaced hole position of camshaft nozzle opening injection In the drive surface of cam, beneficial to lubrication cam, and pass through cam axle, the portion such as effectively lubricating rocking arm and the second rolling bearing Part.

The present embodiment also discloses a kind of cylinder head lubricating system, and the cylinder head lubricating system is provided with camshaft bearing lubrication Construction, the camshaft bearing lubricating structure are the camshaft bearing lubricating structure of said structure；The cylinder head lubricating system energy Camshaft bearing ablation or abnormal sound are enough avoided, ensures that cylinder head lubrication is abundant.

The present embodiment also discloses a kind of engine, and the cylinder head of the engine is provided with cylinder head lubricating system, the cylinder Head lubricating system is the cylinder head lubricating system of said structure；Engine cylinder head lubrication is abundant, avoids engine from abnormal sound occur, improves Service life of aeroengine.

The beneficial effects of the utility model are：A kind of camshaft bearing lubricating structure, cylinder head profit disclosed in the utility model Sliding system and engine, by the setting of the bearing chamber connected with cylinder head oil duct, beneficial to lubricating oil outside the first rolling bearing Side is directly entered the space between the outer ring of the first rolling bearing and inner ring, and then rolling element and retainer are sufficiently moistened It is sliding, avoid with grease sealing lubrication belt come the drawbacks of, effective sufficient lubrication is carried out to camshaft bearing, avoids camshaft bearing Ball wears and bearing ablation, ensures engine normal use, and simple in construction, and cost is cheap.

Brief description of the drawings

The utility model is further described with reference to the accompanying drawings and examples：

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the mounting structure schematic diagram of the second rolling bearing in the utility model；

Fig. 3 is the structural representation of cylinder head cover nozzle opening in the utility model.

Embodiment

Fig. 1 is structural representation of the present utility model, and Fig. 2 is that the mounting structure of the second rolling bearing in the utility model shows It is intended to, Fig. 3 is the structural representation of cylinder head cover nozzle opening in the utility model, as illustrated, the cam shaft in the present embodiment Lubricating structure is held, including is installed on first rolling bearing 2 of the one end of camshaft 1 and is arranged at cylinder head 3 and be used to installing described the The bearing chamber 4 of one rolling bearing 2, the bearing chamber 4 connect 5 with being arranged at the cylinder head oil duct of cylinder head 3, first axis of rolling The outside for holding 2 is opened wide and lubricating oil in cylinder head oil duct is entered in the first rolling bearing 2, the inner side of first rolling bearing 2 It is provided with the dust cap 6 for stopping lubricating oil outflow；The outside of first rolling bearing 2 represents the first rolling bearing 2 towards camshaft 1 Side, otherwise be inner side, the outside of the first rolling bearing 2, which is opened wide, to be represented not installing any sealing on the outside of the first rolling bearing 2 Circle or dust cap, beneficial to lubricating oil from the outside of the first rolling bearing 2 be directly entered the outer ring of the first rolling bearing 2 and inner ring it Between space, and then rolling element 7 and retainer are sufficiently lubricated, avoid with grease sealing lubrication belt come the drawbacks of, Effective sufficient lubrication is carried out to the bearing of camshaft 1, the abrasion of the bearing ball of camshaft 1 and bearing ablation is avoided, is ensureing engine just Often use, and it is simple in construction, and cost is cheap；First rolling bearing 2 and dust cap 6 are prior art, no longer superfluous herein State.

In the present embodiment, the bearing chamber 4 also includes the shoe cream room 8 adjacent to the outside of the first rolling bearing 2, the oil storage Chamber 8 connects 5 with cylinder head oil duct；By the setting of shoe cream room 8, profit is soaked under without operating mode beneficial to the first rolling bearing 2 In lubricating oil, ensure the sufficient lubrication of the first rolling bearing 2.

In the present embodiment, the camshaft 1 is axially disposed the camshaft oil gallery 9 connected with shoe cream room 8, cam shafting oil Road 9 is provided with and communicated with camshaft nozzle opening 10；By the setting of camshaft nozzle opening 10, pressure release can be achieved and beneficial to reduction bearing The pressure of room 4, avoid leaking, while make the lubricating oil flow of bearing chamber 4 and then circularly purifying lubricating oil, avoid impurity from accumulating.

In the present embodiment, in addition to the second rolling bearing 11 close to the other end of camshaft 1 is installed on, described second rolls The both sides of bearing 11 are opened wide and lubricated by way of lubricating oil splash；The other end end set of the camshaft 1 has driving Gear, and cylinder head forms the bearing block for installing the second rolling bearing 11, and the both sides of the second rolling bearing 11 are opened wide And lubricated by way of splash lubrication, ensure that the lubrication of the second rolling bearing 11 is abundant, avoid bearing ablation or produce abnormal sound.

In the present embodiment, in addition to it is arranged at cylinder head cover 12 and 5 cylinder head cover oil duct, the cylinder head is connected with cylinder head oil duct The cylinder head cover nozzle opening 13 that the second rolling bearing of splash lubrication 11 is connected and be used for cylinder head cover oil duct is provided with lid 12；Pass through The setting of cylinder head cover nozzle opening 13, injection of splashing is formed beneficial to the second rolling bearing 11, ensures the profit of the second rolling bearing 11 Sliding effect is good.

In the present embodiment, the injection direction of the cylinder head cover nozzle opening 13 points to air inlet door rod 14, from cylinder head cover nozzle opening 13 lubricating oil ejected act on the second rolling bearing of splash lubrication 11 after air inlet door rod 14；The cylinder head cover nozzle opening 13 Injection direction points to the junction of air inlet door rod 14 and respective rocker arm, effectively lubricating inlet valve rocker screw and inlet valve, and Valve rocker and the second rolling bearing 11 are lubricated after splashing again.

In the present embodiment, the camshaft nozzle opening 10 lubricates along being radially arranged and radially spraying for camshaft 1 Oil；The camshaft nozzle opening 10 is two and is respectively arranged at two axially distributed cams；Camshaft nozzle opening 10 sprays The oil outlet penetrated is located at the drive surface of cam, beneficial to lubrication cam, and is rotated by camshaft 1, effectively lubricating rocking arm and second The grade part of rolling bearing 11.

The present embodiment also discloses a kind of cylinder head lubricating system, and the cylinder head lubricating system is provided with the bearing of camshaft 1 profit Sliding construction, the bearing lubrication of camshaft 1 are configured to the bearing lubrication of camshaft 1 construction of said structure；The cylinder head lube system System can avoid the bearing ablation of camshaft 1 or abnormal sound, ensure that cylinder head lubrication is abundant.

Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent substitution, without departing from the objective and model of technical solutions of the utility model Enclose, it all should cover among right of the present utility model.

Claims

A kind of 1. camshaft bearing lubricating structure, it is characterised in that：Including be installed on camshaft one end the first rolling bearing and It is arranged at the bearing chamber that cylinder head is used to install first rolling bearing, the bearing chamber and the cylinder head oil for being arranged at cylinder head Road connects, and the outside of first rolling bearing, which is opened wide, makes the lubricating oil in cylinder head oil duct enter in the first rolling bearing, described The dust cap for stopping lubricating oil outflow is provided with the inside of first rolling bearing.
2. camshaft bearing lubricating structure according to claim 1, it is characterised in that：The bearing chamber also include adjacent to Shoe cream room on the outside of first rolling bearing, the shoe cream room connect with cylinder head oil duct.
3. camshaft bearing lubricating structure according to claim 2, it is characterised in that：The camshaft is axially disposed to be had The camshaft oil gallery connected with shoe cream room, camshaft oil gallery are provided with and communicated with camshaft nozzle opening.
4. camshaft bearing lubricating structure according to claim 1, it is characterised in that：Also include being installed on close to camshaft Second rolling bearing of the other end, the second rolling bearing both sides are opened wide and lubricated by way of lubricating oil splash.
5. camshaft bearing lubricating structure according to claim 4, it is characterised in that：Also include be arranged at cylinder head cover and with The cylinder head cover oil duct of cylinder head oil duct connection, is provided with the cylinder head cover and splash lubrication second is connected and be used for cylinder head cover oil duct The cylinder head cover nozzle opening of rolling bearing.
6. camshaft bearing lubricating structure according to claim 5, it is characterised in that：The injection of the cylinder head cover nozzle opening Air inlet door rod is pointed in direction, and splash lubrication second rolls after the lubricating oil ejected from cylinder head cover nozzle opening acts on air inlet door rod Bearing.
7. camshaft bearing lubricating structure according to claim 3, it is characterised in that：The camshaft nozzle opening is along cam Axle is radially arranged and radially sprays lubricating oil.
8. camshaft bearing lubricating structure according to claim 7, it is characterised in that：The camshaft nozzle opening is two And it is respectively arranged at two axially distributed cams.
9. a kind of cylinder head lubricating system, the cylinder head lubricating system is provided with camshaft bearing lubricating structure, it is characterised in that：Institute Camshaft bearing lubricating structure is stated as the camshaft bearing lubricating structure described in claim 1-8 any claims.
10. a kind of engine, the cylinder head of the engine is provided with cylinder head lubricating system, it is characterised in that：The cylinder head lubrication System is the cylinder head lubricating system described in claim 9.