CN211852011U - Engine and all-terrain vehicle - Google Patents

Abstract

The utility model discloses an engine and all terrain vehicle, the engine includes: the crankcase is internally provided with a main cavity, a communicating cavity and a separating cavity, the communicating cavity is arranged on one side of the main cavity, the separating cavity is communicated with the communicating cavity, and a separating structure is arranged in the separating cavity; the rotation axis, the rotation axis rotationally set up in main intracavity and axial one end stretch into the intercommunication intracavity, the rotation axis is provided with the intercommunication the main chamber with the first through-hole in intercommunication chamber. From this, on the basis of rotation axis, through setting up the separation chamber, can further carry out oil-gas separation, can promote the oil-gas separation effect of engine, need not to set up oil-gas separation device alone moreover, can reduce the cost of engine like this to and can make arranging of engine simple ization, the structure is more reliable.

Description

Engine and all-terrain vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to an engine and all terrain vehicle are related to.

Background

In the related art, when the engine is in operation, a part of unburned air-fuel mixture and burned exhaust gas in the cylinder may be introduced into the crankcase along the gap between the piston assembly and the cylinder wall. Among the exhaust gases which blow into the engine crankcase, the constituents of which are mainly HC and a small proportion of CO and Nox, these exhaust gases are harmful: 1. HC and engine oil are used as oil to enable the engine oil to be deteriorated to generate deposits, so that carbon deposits and deposits are formed on piston rings and the like; 2. causing the working surface of the engine oil to be rusted; 3. the crankcase pressure is raised and the lubricating oil is oozed out from the oil seal, the gasket, and the oil filler opening.

Therefore, the exhaust gas from the crankcase is introduced into the air filter and then combusted in the combustion chamber, and because the engine has many rotating parts such as gears and crankshafts, when the oil mist generated by splash lubrication in the crankcase and the high-temperature evaporated oil vapor are mixed with the blow-by gas in the cylinder, an ultra-fine aerosol with most of the particles less than 1 μm is formed, and the aerosol is an oil-gas mixture, the exhaust gas introduced from the crankcase into the air filter is separated from the oil-gas mixer, so that most of the oil is prevented from entering the combustion chamber to be combusted.

Therefore, the engine is generally provided with a crankcase oil-gas separation device, but the oil-gas separation device needs to be arranged independently, so that the arrangement of the engine is complex and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an engine, this engine can be with the oil-gas mixture oil-gas separation many times, simple structure moreover, with low costs.

The utility model discloses an all terrain vehicle is further provided.

According to the utility model discloses engine, include: the crankcase is internally provided with a main cavity, a communicating cavity and a separating cavity, the communicating cavity is arranged on one side of the main cavity, the separating cavity is communicated with the communicating cavity, and a separating structure is arranged in the separating cavity; the rotation axis, the rotation axis rotationally set up in main intracavity and axial one end stretch into the intercommunication intracavity, the rotation axis is provided with the intercommunication the main chamber with the first through-hole in intercommunication chamber.

From this, on the basis of rotation axis, through setting up the separation chamber, can further carry out oil-gas separation, can promote the oil-gas separation effect of engine, need not to set up oil-gas separation device alone moreover, can reduce the cost of engine like this to and can make arranging of engine simple ization, the structure is more reliable.

In some examples of the invention, the separation structure comprises: the baffle is arranged in the separation cavity and allows the two sides of the baffle to be communicated.

In some examples of the invention, a channel is left between the baffle and the side wall of the separation chamber; or the baffle is provided with a second communicating hole.

In some examples of the invention, the crankcase comprises: the box body and the box cover, have in the box the main cavity with the intercommunication chamber, the box cover set up in on the box and with the box prescribes a limit to jointly the separation chamber.

In some examples of the invention, the separation structure further comprises: the baffle is isolated between the box body and the box cover so as to divide the separation cavity into a first separation cavity and a second separation cavity, and the first separation cavity is communicated with the second separation cavity.

In some examples of the present invention, the partition plate has a third communication hole distributed thereon, and the third communication hole communicates the first separation chamber with the second separation chamber.

In some examples of the invention, the box with the case lid is still in the oil pocket is injectd to one side of disengagement chamber, the box with be provided with sealed the pad between the case lid, sealed the pad be located the periphery of oil pocket just sealed pad with the baffle is integrated into one piece.

In some examples of the present invention, the baffle includes a first baffle disposed in the first separation chamber and a second baffle disposed in the second separation chamber, the first baffle and the second baffle all abut against the partition.

In some examples of the present invention, the number of the first baffles is at least two, and at least two of the first baffles are spaced apart from each other in the first separation chamber; and/or the number of the second baffle plates is at least two, and the at least two second baffle plates are arranged in the second separation cavity at intervals.

In some examples of the present invention, a backflow hole is further provided in the box body, and the backflow hole communicates the separation chamber with the main chamber.

In some examples of the invention, the backflow hole is located at a lowest point of the separation chamber.

In some examples of the present invention, the case cover is provided with an outlet duct, and the outlet duct is communicated with the separation chamber.

In some examples of the invention, the rotating shaft is a balance shaft or a crankshaft.

In some examples of the invention, the first communication hole comprises: an axial bore and a radial bore, the radial bore communicating between the main chamber and the axial bore, the axial bore communicating between the radial bore and the communication chamber.

In some examples of the invention, the balance shaft comprises: the balance block is arranged on the shaft body, the shaft body and the balance block are arranged in the main cavity, the radial hole radially penetrates through the balance block, one axial end of the shaft body stretches into the communicating cavity, and the axial hole is formed in the shaft body and penetrates through one axial end of the shaft body.

According to the utility model discloses an all-terrain vehicle, include: the engine; an air filter in communication with the separation chamber.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an engine according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an engine according to an embodiment of the present invention, with a case body and a case cover in a separated state;

fig. 3 is an exploded schematic view of an engine at a crankcase according to an embodiment of the invention;

FIG. 4 is a schematic view of the cover;

fig. 5 is a cross-sectional view of an engine in a first position according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of an engine according to an embodiment of the present invention in a second position;

fig. 7 is a cross-sectional view of an engine according to an embodiment of the present invention in a third position;

fig. 8 is an enlarged view of the area a in fig. 7.

Reference numerals:

an engine 100;

a crankcase 10; a main chamber 11; a communication chamber 12; a separation chamber 13; a first separation chamber 131; a second separation chamber 132; a separation structure 14; a baffle 141; the first baffle 141 a; the second baffle 141 b; a channel 142; a partition 143; the third communication hole 144; a case 15; an upper case 151; a lower case 152; a case cover 16; an air outlet pipe 17; an oil chamber 18; a gasket 181; a return hole 19;

a balance shaft 20; a first communication hole 21; an axial bore 211; a radial hole 212; a shaft body 22; a counterweight 23.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

Referring now to fig. 1-8, an engine 100 according to an embodiment of the present invention is described, the engine 100 being applied to a vehicle, such as an all-terrain vehicle, having an air intake system including an air cleaner that provides fresh air to the engine.

As shown in fig. 1 to 3, an engine 100 according to an embodiment of the present invention may include: a crankcase 10 and a rotating shaft, wherein the rotating shaft can be rotatably arranged in the crankcase 10, a cylinder is arranged above the crankcase 10, and an air filter is communicated with an air inlet of the cylinder.

As shown in fig. 5 to 7, the crankcase 10 has a main cavity 11, a communicating cavity 12 and a separating cavity 13 therein, the main cavity 11 is used for accommodating various moving components, such as a rotating shaft, the rotating shaft can rotate in the main cavity 11, the communicating cavity 12 is disposed on one side of the main cavity 11, one axial end of the rotating shaft extends into the communicating cavity 12, and the rotating shaft is provided with a first communicating hole 21 communicating the main cavity 11 and the communicating cavity 12. That is, the main chamber 11 and the communication chamber 12 are not directly communicated with each other, but are connected by the first communication hole 21. It can be understood that the rotating shaft rotates in the main chamber 11, the oil-gas mixture in the main chamber 11 can throw off a part of the lubricating oil under the centrifugal force of the rotating shaft when passing through the first communication hole 21, and then the oil-gas mixture mixed with another part of the lubricating oil can enter the communication chamber 12 through the first communication hole 21. Wherein the rotation axis may be a balance axis 20.

As shown in fig. 8, the separation chamber 13 communicates with the communication chamber 12, and the separation chamber 13 is provided inside with a separation structure 14, and the air filter communicates with the separation chamber 13. It can be understood that the air-fuel mixture mixed with another part of the lubricating oil can enter the separation chamber 13 through the communication chamber 12, when the air-fuel mixture flows in the separation chamber 13, the separation structure 14 can further separate the lubricating oil from the exhaust gas, and the exhaust gas after the separation can enter the cylinder again through the air filter for combustion.

From this, on the basis of rotation axis, through setting up separation chamber 13, can further carry out oil-gas separation, can promote engine 100's oil-gas separation effect, need not to set up oil-gas separation device alone moreover, can reduce engine 100's cost like this to and can make engine 100 arrange the simplification, the structure is more reliable.

According to an alternative embodiment of the present invention, as shown in fig. 2-4, the separation structure 14 comprises: and a baffle 141, the baffle 141 being disposed in the separation chamber 13, and the baffle 141 allowing both sides of the baffle 141 to communicate. That is to say, baffle 141 can play the effect of stopping the separation in separation chamber 13, and in the gas-oil mixture flow process, some lubricating oil can be attached to the surface of baffle 141, and baffle 141 can effectively play the effect of oil-gas separation like this, can further promote especially separation effect. Moreover, since both sides of the baffle plate 141 are in a non-closed state, the flow of the exhaust gas in the separation chamber 13 can be ensured.

Further, as shown in fig. 2 to 4, at least two baffles 141 are provided, and at least two baffles 141 are spaced apart from each other in the separation chamber 13. At least two baffles 141 can set up along waste gas flow path interval in separation chamber 13, like this through setting up two at least baffles 141, can block oil-gas mixture in proper order, can play two at least oil-gas separation's effect, can further promote separation chamber 13 oil-gas separation effect. For example, there may be three baffles 141, and the three baffles 141 may be formed by inwardly extending ribs of the side walls of the separation chamber 13.

Alternatively, as shown in fig. 3 and 4, a channel 142 is left between the baffle 141 and the sidewall of the separation chamber 13, that is, one end of the baffle 141 is connected to the sidewall of the separation chamber 13 and the other end is not connected to the sidewall of the separation chamber 13, so that the channel 142 for the oil-gas mixture to flow is left between the baffle 141 and the sidewall of the separation chamber 13.

Alternatively, the baffle plate 141 is provided with a second communication hole (not shown). That is, both ends of the baffle plate 141 may be respectively connected to the side walls of the separation chamber 13, so that both sides of the baffle plate 141 may be partitioned into two sub-chambers, and the two sub-chambers are communicated with each other through the second communication hole provided in the baffle plate 141. The second communication hole may be plural, and the second communication hole may be a circular hole.

According to an embodiment of the present invention, as shown in fig. 3 and 4, the crankcase 10 includes: the box body 15 and the case lid 16, have main chamber 11 and intercommunication chamber 12 in the box body 15, and the case lid 16 sets up on the box body 15, and the case lid 16 limits separating chamber 13 with box body 15 together. That is, the crankcase 10 is mainly composed of a case body 15 and a case cover 16, the main chamber 11 and the communicating chamber 12 may be formed inside the case body 15, and the separating chamber 13 may be defined by the case body 15 and the case cover 16 together, so that the separating chamber 13 is located outside the case body 15 with respect to the main chamber 11, thereby facilitating the communication between the separating chamber 13 and the air filter, and making the whole arrangement of the engine 100 reasonable. Wherein, the box cover 16 is provided with an air outlet pipe 17, and the air outlet pipe 17 is communicated with an air filter.

Specifically, as shown in fig. 3, the case body 15 includes an upper case 151 and a lower case 152, the upper case 151 is mounted above the lower case 152, the upper case 151 and the lower case 152 collectively define the main chamber 11 and the communication chamber 12, and the lower case 152 and the case cover 16 collectively define the separation chamber 13. Therefore, the separation cavity 13 can reasonably utilize the space at the lower box body 152, and the distance between the lower box body 152 and the oil pan is short, so that subsequent oil return is facilitated.

Further, the separation structure 14 further includes: and a partition 143, the partition 143 being partitioned between the case body 15 and the cover 16 to divide the separation chamber 13 into the first separation chamber 131 and the second separation chamber 132, the first separation chamber 131 and the second separation chamber 132 being communicated with each other. It can be understood that the partition 143 can divide the separation chamber 13 into two parts, namely the first separation chamber 131 and the second separation chamber 132, so that the air-fuel mixture entering the first separation chamber 131 needs to pass through the partition 143 and then enter the second separation chamber 132 again, and then enter the air filter, so that the partition 143 can play a role of oil-gas separation again, and the effect of oil-gas separation can be further improved. Based on this, in the separation chamber 13, the oil-gas mixture needs to be subjected to oil-gas separation for many times, so that complete separation of oil and gas can be facilitated.

As shown in fig. 2 and 3, third communication holes 144 are distributed on the partition 143, and the third communication holes 144 communicate the first separation chamber 131 with the second separation chamber 132. By providing the third communication hole 144, the first separation chamber 131 and the second separation chamber 132 can be effectively communicated, and the exhaust gas in the first separation chamber 131 can be made to enter the second separation chamber 132 from different positions, so that the oil-gas separation can be further facilitated.

As shown in fig. 2, the case body 15 and the case cover 16 further define an oil chamber 18 on one side of the separation chamber 13, a gasket 181 is disposed between the case body 15 and the case cover 16, the gasket 181 is located on the periphery of the oil chamber 18, and the gasket 181 and the partition 143 are integrally formed. That is, an oil chamber 18 is defined between the case body 15 and the case cover 16, the oil chamber 18 is used for containing lubricating oil, the lubricating oil in the oil pan can be pumped into the oil chamber 18 through one oil pump, and the lubricating oil in the oil chamber 18 can be pumped to each kinematic pair through the other oil pump, so that each kinematic pair can be effectively lubricated. With the design of baffle 143 and sealed 181 integrated into one piece, can reduce the installation step, moreover because both set up between box 15 and case lid 16, can guarantee the installation reliability like this, can rationally utilize the space between box 15 and the case lid 16 moreover.

Specifically, as shown in conjunction with fig. 3 and 4, the baffle 141 includes a first baffle 141a disposed in the first separation chamber 131 and a second baffle 141b disposed in the second separation chamber 132. Therefore, the oil-gas mixture firstly enters the first separation chamber 131, after being blocked by the first baffle 141a in the first separation chamber 131, enters the second separation chamber 132 through the third communication hole 144, and after being blocked by the second baffle 141b in the second separation chamber 132, enters the air filter through the air outlet pipe 17, and finally enters the cylinder for combustion. On the basis of setting up baffle 143 like this, the first baffle 141a of first separation chamber 131 and the second baffle 141b of second separation chamber 132 can carry out oil-gas separation to the oil-gas mixture respectively, can be favorable to the complete separation of oil-gas, can promote oil-gas separation's effect.

As shown in fig. 7, the first baffle 141a and the second baffle 141b both abut against the partition 143. The first barrier 141a and the second barrier 141b thus provided can effectively support the partition 143 on both sides of the partition 143, and can prevent the partition 143 from being deformed.

At least two first baffles 141a and at least two second baffles 141b are provided, the at least two first baffles 141a are spaced apart in the first separation chamber 131, and the at least two second baffles 141b are spaced apart in the second separation chamber 132. Through the quantity that rationally sets up baffle 141, can further promote the stability of baffle 143, also can further promote oil-gas separation's effect.

Alternatively, as shown in fig. 3 and 4, the arrangement position of the baffle 141 in the first separation chamber 131 and the arrangement position in the second separation chamber 132 are the same. The baffle 141 that so sets up arranges simply, and baffle 141 in the first separation chamber 131 and baffle 141 in the second separation chamber 132 can effectively support baffle 143 in the both sides of baffle 143 moreover, can avoid baffle 143 to take place to warp to can further improve the reliability of separation chamber 13, and can guarantee the oil-gas separation effect of separation chamber 13.

As shown in fig. 2, 6 and 8, a return hole 19 is further provided in the case body 15, and the return hole 19 communicates the separation chamber 13 with the main chamber 11. That is, the lubricating oil separated in the separation chamber 13 can flow back to the main chamber 11 through the return hole 19, so that the loss of the lubricating oil can be reduced, and the oil-gas separation effect can be improved. Wherein the return hole 19 is located at the lowest point of the separation chamber 13. The return hole 19 is arranged to facilitate the lubricant in the separation chamber 13 to flow to the return hole 19 under the action of gravity, and further facilitate the lubricant to flow back to the main chamber 11.

According to a specific embodiment of the present invention, as shown in fig. 5 and 7, the first communication hole 21 includes: an axial hole 211 and a radial hole 212, the radial hole 212 communicating between the main chamber 11 and the axial hole 211, the axial hole 211 communicating between the radial hole 212 and the communication chamber 12. The radial holes 212 may facilitate oil slinging operations of the balance shaft 20 and may facilitate oil-gas separation of the balance shaft 20. And the axial hole 211 can facilitate the flow of the oil-gas mixture, so that the oil-gas mixture can smoothly enter the communication cavity 12.

Specifically, as shown in fig. 5, 7 and 8, the balance shaft 20 includes: the shaft body 22 and the balancing block 23, the balancing block 23 is arranged on the shaft body 22, the shaft body 22 and the balancing block 23 are arranged in the main cavity 11, the radial hole 212 radially penetrates through the balancing block 23, the axial end of the shaft body 22 extends into the communicating cavity 12, the axial hole 211 is axially arranged in the shaft body 22, and the axial hole 211 penetrates through the axial end of the shaft body 22. It can be understood that, by arranging the radial hole 212 on the balance block 23, the oil-gas mixture can enter the balance shaft 20 conveniently, and the length of the radial hole 212 can be prolonged, so that the lubricating oil can be thrown out of the balance shaft 20, and the axial holes 211 of the radial hole 212 can be communicated conveniently.

According to the utility model discloses full all terrain vehicle, including the engine 100 of the above-mentioned embodiment.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (16)

1. An engine, comprising:

the crankcase is internally provided with a main cavity, a communicating cavity and a separating cavity, the communicating cavity is arranged on one side of the main cavity, the separating cavity is communicated with the communicating cavity, and a separating structure is arranged in the separating cavity;

the rotation axis, the rotation axis rotationally set up in main intracavity and axial one end stretch into the intercommunication intracavity, the rotation axis is provided with the intercommunication the main chamber with the first through-hole in intercommunication chamber.

2. The engine of claim 1, wherein the separation structure comprises: the baffle is arranged in the separation cavity and allows the two sides of the baffle to be communicated.

3. The engine of claim 2, characterized in that a passage is left between the baffle and the side wall of the separation chamber; or the baffle is provided with a second communicating hole.

4. The engine of claim 2, wherein the crankcase comprises: the box body and the box cover, have in the box the main cavity with the intercommunication chamber, the box cover set up in on the box and with the box prescribes a limit to jointly the separation chamber.

5. The engine of claim 4, wherein the separation structure further comprises: the baffle is isolated between the box body and the box cover so as to divide the separation cavity into a first separation cavity and a second separation cavity, and the first separation cavity is communicated with the second separation cavity.

6. The engine according to claim 5, characterized in that third communication holes are distributed in the partition plate, and communicate the first separation chamber with the second separation chamber.

7. The engine of claim 5, wherein the case body and the case cover further define an oil chamber on one side of the separation chamber, and a gasket is disposed between the case body and the case cover, the gasket being located at a periphery of the oil chamber and the gasket being integrally formed with the partition.

8. The engine of claim 5, wherein the baffle comprises a first baffle disposed within the first separation chamber and a second baffle disposed within the second separation chamber, the first and second baffles each abutting the bulkhead.

9. The engine of claim 8, wherein said first baffles are at least two, at least two of said first baffles being spaced apart within said first separation chamber; and/or the number of the second baffle plates is at least two, and the at least two second baffle plates are arranged in the second separation cavity at intervals.

10. An engine according to claim 4, wherein a return vent is provided in the tank, the return vent communicating the separation chamber with the main chamber.

11. The engine of claim 10, wherein the return orifice is located at a lowest point of the separation chamber.

12. The engine of claim 4, wherein the cover is provided with an outlet duct, the outlet duct being in communication with the separation chamber.

13. The engine of any one of claims 1-12, characterized in that the rotating shaft is a balance shaft or a crankshaft.

14. The engine of claim 13, wherein the first communication hole comprises: an axial bore and a radial bore, the radial bore communicating between the main chamber and the axial bore, the axial bore communicating between the radial bore and the communication chamber.

15. The engine of claim 14, wherein the balance shaft comprises: the balance block is arranged on the shaft body, the shaft body and the balance block are arranged in the main cavity, the radial hole radially penetrates through the balance block, one axial end of the shaft body stretches into the communicating cavity, and the axial hole is formed in the shaft body and penetrates through one axial end of the shaft body.

16. An all-terrain vehicle, comprising:

the engine of any one of claims 1-15;

an air filter in communication with the separation chamber.

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