CN219492362U - Engine cylinder head lubricating structure, engine and motorcycle - Google Patents

Abstract

The utility model relates to the technical field of engines and discloses an engine cylinder head lubricating structure, an engine and a motorcycle, which comprise a shell, wherein a cam shaft and a cam shaft support are arranged on the shell, a central oil passage and a radial oil passage which are communicated are arranged on the cam shaft, a valve oil seal, a valve rod and a valve guide pipe which are connected are arranged below the cam shaft support, an engine oil collecting device is arranged on the inner side wall of the cam shaft support, and an oil outlet is arranged on the engine oil collecting device corresponding to the valve oil seal. According to the utility model, the engine oil collecting device is arranged on the inner side wall of the camshaft support, and the oil outlet is arranged on the engine oil collecting device corresponding to the valve oil seal, so that engine oil thrown out to the inner side wall of the camshaft support is collected by the engine oil collecting device and collected to the upper side of the exhaust valve oil seal, flows through the opening of the valve oil seal, so that lubrication of the valve guide tube-valve rod kinematic pair is realized, collection of ineffective engine oil on the inner side wall of the camshaft support is realized, and abrasion of the valve guide tube is reduced.

Description

Engine cylinder head lubricating structure, engine and motorcycle

Technical Field

The utility model relates to the technical field of engines, in particular to an engine cylinder head lubricating structure, an engine and a motorcycle.

Background

Some kinematic pairs inside the engine all need lubricating oil for lubrication, wherein engine oil in a central oil passage 1 of a camshaft is thrown out through a radial oil passage 2 under the action of centrifugal force, and splashes lubricate a valve rocker mechanism (figure 1). The radial oil passage 2 of the camshaft rotates to be aligned with the inner side wall 3 of the camshaft support, engine oil is thrown out to the side wall of the camshaft support and randomly dispersedly flows down along the wall surface of the cylinder head (the flow path w is shown in fig. 2), no specific lubrication action exists, and the engine oil is wasted.

Disclosure of Invention

In order to solve the technical problems, the utility model provides an engine cylinder head lubricating structure, an engine and a motorcycle, and ineffective engine oil on the inner side wall of a camshaft support of the engine is collected to lubricate a valve guide pipe-valve stem kinematic pair, so that abrasion of the valve stem and the valve guide pipe is reduced, and energy is saved.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides an engine cylinder head lubricating structure, includes the casing, be equipped with camshaft and camshaft support on the casing, be equipped with central oil duct and the radial oil duct that is linked together on the camshaft, the below of camshaft support is equipped with valve oil blanket, valve stem and the valve pipe that is connected, the inside wall of camshaft support is equipped with engine oil collecting device, be equipped with the oil-out on the engine oil collecting device, the oil-out sets up valve oil blanket top, just the engine oil of oil-out whereabouts falls into on the valve oil blanket.

Preferably, the engine oil collecting device comprises two oil collecting ribs which are symmetrically arranged, the projection of a symmetrical axis of the oil collecting ribs coincides with the projection of the central line of the valve stem, the two oil collecting ribs are respectively a first oil collecting rib and a second oil collecting rib, and one end, close to the valve oil seal, of the first oil collecting rib and one end, close to the valve oil seal, of the second oil collecting rib encircle the oil outlet.

Preferably, the included angle between the surfaces of the two oil collecting ribs is a, and the value range of a is 150-170 degrees.

Preferably, the length of the oil collecting rib is L, and the width of the oil outlet is L, and l= (0.08-0.09) L.

Preferably, the engine oil collecting device is an oil collecting groove, the oil collecting groove comprises an oil collecting groove main body which is arranged in a V shape and an oil outlet groove which is arranged in the middle of the oil collecting groove main body, and a port of one end of the oil outlet groove, which is far away from the oil collecting groove main body, is the oil outlet.

Preferably, the oil collecting tank main body comprises two unit grooves which are symmetrically arranged, and the projection of the symmetry axis of the oil collecting tank main body coincides with the projection of the central line of the valve rod.

Preferably, the included angle between the two unit grooves is b, and the value range of b is 150-170 degrees.

Preferably, the length of the unit groove is S, the width of the oil outlet is S, and s= (0.08-0.09) S;

the width of the unit groove is H, and the depth of the oil collecting groove is H, wherein h= (0.35-0.45) H.

An engine comprises the engine cylinder head lubricating structure.

A motorcycle comprises the engine.

Compared with the prior art, the engine cylinder head lubricating structure, the engine and the motorcycle have the beneficial effects that: through set up engine oil collection device at the inside wall of camshaft support, correspond the valve oil blanket on engine oil collection device simultaneously and set up the oil-out, the radial oil duct of camshaft is rotatory to just right with the camshaft support inside wall, is thrown away to camshaft support inside wall engine oil and is collected by engine oil collection device, gathers exhaust valve oil seal upside, flows through the valve oil blanket oral area, realizes the lubrication to valve guide-valve stem kinematic pair, has not only realized the collection to the invalid engine oil of camshaft support inside wall, has practiced thrift the energy, has reduced the valve guide wearing and tearing moreover. The utility model has simple structure, good use effect and easy popularization and use.

Drawings

Fig. 1 is a schematic view of a cylinder head of a conventional engine.

Fig. 2 shows the flow path of oil thrown out of a cylinder head of a conventional engine along the wall surface of the cylinder head.

Fig. 3 is a schematic view of the engine cylinder head according to the first embodiment.

Fig. 4 is a cross-sectional view of fig. 3.

Fig. 5 is a partial enlarged view of a in fig. 3.

Fig. 6 is a schematic view of the engine cylinder head in the second embodiment.

Fig. 7 is a partial enlarged view of B in fig. 6.

Fig. 8 is a cross-sectional view of fig. 6.

Fig. 9 is a partial enlarged view of C in fig. 8.

Wherein: the engine oil collecting device comprises a 1-camshaft central oil passage, a 2-camshaft radial oil passage, a 3-camshaft support inner side wall, a 4-camshaft, a 5-camshaft support, a 6-valve oil seal, a 7-valve rod, an 8-engine oil collecting device, 81-oil collecting ribs, 82-unit grooves, 83-oil outlet grooves and 9-oil outlet.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

As shown in fig. 3-6, an engine cylinder head lubricating structure according to a preferred embodiment of the present utility model includes a housing, a camshaft 4 and a camshaft support 5 are disposed on the housing, a central oil passage and a radial oil passage which are communicated are disposed on the camshaft 4, a valve oil seal 6, a valve rod 7 and a valve guide pipe which are connected are disposed below the camshaft support 5, specifically, the valve oil seal 6 and the valve guide pipe are both sleeved on the valve rod 7, and the valve oil seal 6 is fixed at one end of the valve guide pipe close to the camshaft support 5. The inner side wall of the camshaft support 5 is provided with an engine oil collecting device 8, and an oil outlet 9 is arranged on the engine oil collecting device 8 corresponding to the valve oil seal 6.

According to the engine cylinder head lubricating structure based on the technical characteristics, the engine oil collecting device 8 is arranged on the inner side wall of the camshaft support 5, meanwhile, the oil outlet 9 is arranged on the engine oil collecting device 8 corresponding to the valve oil seal 6, the camshaft radial oil duct 2 rotates to be aligned with the inner side wall 3 of the camshaft support, engine oil which is thrown out to the inner side wall of the camshaft support is collected by the engine oil collecting device 8 and collected to the upper side of the exhaust valve oil seal 6, flows through the opening of the valve oil seal, lubrication of a valve guide-valve stem kinematic pair is achieved, collection of ineffective engine oil on the inner side wall 3 of the camshaft support is achieved, energy is saved, and abrasion of the valve guide is reduced. The utility model has simple structure, good use effect and easy popularization and use.

In this embodiment, the engine oil collecting device 8 has two preferable structures, specifically:

example 1

Referring to fig. 3-5, in this embodiment, the engine oil collecting device 8 includes two oil collecting ribs 81 symmetrically disposed, and the projection of the symmetry axis coincides with the projection of the center line of the valve stem 7, and the oil outlet 9 is disposed between the two oil collecting ribs 81, so that engine oil can be uniformly collected from two sides of the oil outlet 9. Meanwhile, an obtuse angle is formed between the surfaces of the two oil collecting ribs 81, one end, close to the oil outlet 9, is low, and one end, far away from the oil outlet 9, is high, so that engine oil can flow to the oil outlet 9 conveniently. Preferably, the included angle between the surfaces of the two oil collecting ribs 81 is a, and the value range of a is 150-170 degrees, such as 159 degrees, 162 degrees, 165 degrees, etc.

In addition, the size of the oil outlet 9 and the width of the oil collecting rib 81 have a certain proportional relationship, specifically, if the length of the oil collecting rib 81 is L and the width of the oil outlet 9 is L, the oil outlet 9 has the best use effect when l= (0.08-0.09) L. The specific width is determined according to practical situations, such as l=0.081L, L =0.083L, etc.

Example two

Referring to fig. 6-9, in this embodiment, the engine oil collecting device 8 is configured as an oil collecting tank, and is directly disposed on an inner side wall of the camshaft support 5, and includes an oil collecting tank main body disposed in a V-shape and an oil outlet tank 83 disposed in a middle portion of the oil collecting tank main body, and the oil outlet port 9 is disposed at one end of the oil outlet tank 83 away from the oil collecting tank main body. The oil collecting tank main body comprises two unit grooves 82 which are symmetrically arranged, and the projection of the symmetry axis of the oil collecting tank main body coincides with the projection of the central line of the valve rod 7. Meanwhile, in order to facilitate the engine oil to flow into the oil outlet groove 83 along the unit groove 82, the included angle between the two unit grooves 82 is b, and the value range of b is 150-170 degrees, such as 155 degrees, 160 degrees, 165 degrees, etc.

In addition, the unit groove 82, the oil outlet 9, and the oil sump satisfy the following relationship in the production process. If the length of the unit groove 82 is S and the width of the oil outlet is S, s= (0.08-0.09) S. If the width of the unit groove 82 is H and the depth of the oil collecting groove is H, the oil collecting groove has the best use effect when h= (0.35-0.45) H, so that the engine oil can be fully collected, the valve guide-valve stem kinematic pair can be well lubricated, and the abrasion of the valve guide is reduced.

An engine comprises the engine cylinder head lubricating structure, and the engine can collect ineffective engine oil on the inner side wall of an engine camshaft support to lubricate a valve guide pipe-valve stem kinematic pair, reduce abrasion of a valve stem and the valve guide pipe and save energy.

A motorcycle comprises the engine, wherein ineffective engine oil on the inner side wall of a camshaft support of the engine can be collected to lubricate a valve guide pipe-valve stem kinematic pair, so that abrasion of the valve stem and the valve guide pipe is reduced, and energy is saved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (10)

1. An engine cylinder head lubricating structure which characterized in that: the engine oil collecting device comprises a shell, a cam shaft and a cam shaft support are arranged on the shell, a central oil passage and a radial oil passage which are communicated are arranged on the cam shaft, an air valve oil seal, an air valve rod and an air valve guide pipe which are connected are arranged below the cam shaft support, an engine oil collecting device is arranged on the inner side wall of the cam shaft support, an oil outlet is arranged on the engine oil collecting device, the oil outlet is arranged above the air valve oil seal, and engine oil which drops from the oil outlet falls onto the air valve oil seal.

2. The engine cylinder head lubricating structure according to claim 1, characterized in that: the engine oil collecting device comprises two oil collecting ribs which are symmetrically arranged, the projection of a symmetrical axis of the oil collecting ribs coincides with the projection of the central line of the valve rod, the two oil collecting ribs are respectively a first oil collecting rib and a second oil collecting rib, and one end, close to the valve oil seal, of the first oil collecting rib and one end, close to the valve oil seal, of the second oil collecting rib encircle the oil outlet.

3. The engine cylinder head lubricating structure according to claim 2, characterized in that: the included angle between the surfaces of the two oil collecting ribs is a, and the value range of a is 150-170 degrees.

4. The engine cylinder head lubricating structure according to claim 2, characterized in that: the length of the oil collecting rib is L, and the width of the oil outlet is L, and l= (0.08-0.09) L.

5. The engine cylinder head lubricating structure according to claim 1, characterized in that: the engine oil collecting device is arranged to be an oil collecting groove, the oil collecting groove comprises an oil collecting groove main body which is arranged in a V shape and an oil outlet groove which is arranged in the middle of the oil collecting groove main body, and a port of one end of the oil outlet groove, which is far away from the oil collecting groove main body, is the oil outlet.

6. The engine cylinder head lubrication structure according to claim 5, wherein: the oil collecting tank main body comprises two unit grooves which are symmetrically arranged, and the projection of the symmetry axis of the oil collecting tank main body coincides with the projection of the central line of the valve rod.

7. The engine cylinder head lubrication structure according to claim 6, wherein: the included angle between the two unit grooves is b, and the value range of b is 150-170 degrees.

8. The engine cylinder head lubrication structure according to claim 6, wherein: the length of the unit groove is S, the width of the oil outlet is S, and s= (0.08-0.09) S;

the width of the unit groove is H, and the depth of the oil collecting groove is H, wherein h= (0.35-0.45) H.

9. An engine, characterized in that: comprising an engine cylinder head lubricating structure according to any one of claims 1 to 8.

10. A motorcycle, characterized in that: comprising the engine of claim 9.